<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2023 Workiva-->
<!--r:e54a9141-e763-4fbe-81b7-097f15f382d4,g:38306571-426c-4abb-b822-86faeecbc85d-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.coned.com/role/CoverPage" xlink:type="simple" xlink:href="ed-20221231.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CoverPage" xlink:type="extended" id="i7fd64655654e4ef0a3995521a3d3e9b5_CoverPage">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_5d414887-b2e9-4bc6-a5ac-c9422f54d825" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentType_5d414887-b2e9-4bc6-a5ac-c9422f54d825" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport_b1976a40-d67c-4f81-b059-2c789f043d70" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentAnnualReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentAnnualReport_b1976a40-d67c-4f81-b059-2c789f043d70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_9a98475d-6ecf-4fe4-ab7b-6322b7c7ceef" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentPeriodEndDate_9a98475d-6ecf-4fe4-ab7b-6322b7c7ceef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_ada15605-3e20-42aa-b12a-7e4db1780a91" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentTransitionReport_ada15605-3e20-42aa-b12a-7e4db1780a91" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_dfaed1d4-7aca-411b-b2a0-6d19c3f01806" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityFileNumber_dfaed1d4-7aca-411b-b2a0-6d19c3f01806" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_4dc09391-5588-4ae9-a2ff-1dca237bd505" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityRegistrantName_4dc09391-5588-4ae9-a2ff-1dca237bd505" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_c617cc04-485f-4454-af46-d5f7993991c9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityIncorporationStateCountryCode_c617cc04-485f-4454-af46-d5f7993991c9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_7896a540-2600-4e47-b4e2-1e11044558d2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityTaxIdentificationNumber_7896a540-2600-4e47-b4e2-1e11044558d2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_8bc1cb0a-1212-430a-84cf-fecf6049a38b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityAddressAddressLine1_8bc1cb0a-1212-430a-84cf-fecf6049a38b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_3c093bcb-8d4d-4808-95aa-994f79802cbf" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityAddressCityOrTown_3c093bcb-8d4d-4808-95aa-994f79802cbf" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_e77ec72f-9ec9-4cba-9025-51a4a46a7558" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityAddressStateOrProvince_e77ec72f-9ec9-4cba-9025-51a4a46a7558" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_77b1defc-0b3f-4de0-966c-0ee03f27ae75" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityAddressPostalZipCode_77b1defc-0b3f-4de0-966c-0ee03f27ae75" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_67344cac-cb61-4126-9202-7b0d4098a738" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_CityAreaCode_67344cac-cb61-4126-9202-7b0d4098a738" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_5bee4f52-cccf-4a14-8d94-e5e2d5bc9547" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_LocalPhoneNumber_5bee4f52-cccf-4a14-8d94-e5e2d5bc9547" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_1d2a0ac8-5b07-4210-a7fb-15f21eed8f93" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_Security12bTitle_1d2a0ac8-5b07-4210-a7fb-15f21eed8f93" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_dd409dc9-be3a-4865-86ba-c15bfc7c93dd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_TradingSymbol_dd409dc9-be3a-4865-86ba-c15bfc7c93dd" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_2db29968-7b6b-491f-b9b6-1b7885900160" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_SecurityExchangeName_2db29968-7b6b-491f-b9b6-1b7885900160" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_9ed0fc00-5a47-4862-98f8-255342cbabb2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityWellKnownSeasonedIssuer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_9ed0fc00-5a47-4862-98f8-255342cbabb2" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers_561d2ef0-751d-404a-987e-b54a9e228f55" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityVoluntaryFilers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityVoluntaryFilers_561d2ef0-751d-404a-987e-b54a9e228f55" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_1137c757-93ad-498e-a2d1-4e6ee53174ba" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityCurrentReportingStatus_1137c757-93ad-498e-a2d1-4e6ee53174ba" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_19bb3348-ea0a-4958-9cec-81a5670254e0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityInteractiveDataCurrent_19bb3348-ea0a-4958-9cec-81a5670254e0" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_332c596f-56c9-404a-94d0-12379b718033" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityFilerCategory_332c596f-56c9-404a-94d0-12379b718033" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_25b91ce3-d8b8-4895-b9c2-b642c4350dda" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntitySmallBusiness_25b91ce3-d8b8-4895-b9c2-b642c4350dda" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_a332b85b-812d-4ce5-87a7-958d427607e3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityEmergingGrowthCompany_a332b85b-812d-4ce5-87a7-958d427607e3" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_IcfrAuditorAttestationFlag_73fa3a9d-640d-4011-90e0-8fa405240ab5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_IcfrAuditorAttestationFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_IcfrAuditorAttestationFlag_73fa3a9d-640d-4011-90e0-8fa405240ab5" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_00f1d546-ccbf-449b-81cd-674818e779c2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityShellCompany_00f1d546-ccbf-449b-81cd-674818e779c2" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityPublicFloat_da57f28d-8317-480e-8d39-5f1a9905f5e3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityPublicFloat"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityPublicFloat_da57f28d-8317-480e-8d39-5f1a9905f5e3" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_527aa46a-26fc-4c4a-9067-3c0610363432" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_527aa46a-26fc-4c4a-9067-3c0610363432" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentsIncorporatedByReferenceTextBlock_83f108fe-07d6-4629-b20b-ffd27be3323c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentsIncorporatedByReferenceTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentsIncorporatedByReferenceTextBlock_83f108fe-07d6-4629-b20b-ffd27be3323c" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_48b903f4-d6f3-4245-b610-79bfe91da949" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_AmendmentFlag_48b903f4-d6f3-4245-b610-79bfe91da949" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_26630ff3-9c1a-455b-9f35-e22c13f49638" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentFiscalYearFocus_26630ff3-9c1a-455b-9f35-e22c13f49638" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_97ba4b81-9e53-4ee6-b624-58f0837ebc3e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentFiscalPeriodFocus_97ba4b81-9e53-4ee6-b624-58f0837ebc3e" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_e23e3a0b-048d-4ede-b8d1-595ebba42445" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_EntityCentralIndexKey_e23e3a0b-048d-4ede-b8d1-595ebba42445" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_a5644e06-f971-400f-8d71-60a9193048c5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_CurrentFiscalYearEndDate_a5644e06-f971-400f-8d71-60a9193048c5" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_0d746164-4343-49b0-aeac-7aaa84f21929" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_bef1ca9b-8a7a-42d4-939f-0fe77d6ffaa7" xlink:to="loc_dei_DocumentInformationTable_0d746164-4343-49b0-aeac-7aaa84f21929" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d117dd4a-cd0b-40c3-8b3c-1ff1066c4971" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_0d746164-4343-49b0-aeac-7aaa84f21929" xlink:to="loc_dei_LegalEntityAxis_d117dd4a-cd0b-40c3-8b3c-1ff1066c4971" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d117dd4a-cd0b-40c3-8b3c-1ff1066c4971_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d117dd4a-cd0b-40c3-8b3c-1ff1066c4971" xlink:to="loc_dei_EntityDomain_d117dd4a-cd0b-40c3-8b3c-1ff1066c4971_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9e0cd6cf-8e1a-4907-921b-d064d530cdbc" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d117dd4a-cd0b-40c3-8b3c-1ff1066c4971" xlink:to="loc_dei_EntityDomain_9e0cd6cf-8e1a-4907-921b-d064d530cdbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_53bd4797-5bff-479f-9bbb-ea3af2b9f537" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9e0cd6cf-8e1a-4907-921b-d064d530cdbc" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_53bd4797-5bff-479f-9bbb-ea3af2b9f537" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedIncomeStatement" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedIncomeStatement"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedIncomeStatement" xlink:type="extended" id="ic631497c6f704eb4945736cb41de8128_ConsolidatedIncomeStatement">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_da85cd51-da0e-465b-a4f2-ff615f780639" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_RevenuesAbstract_da85cd51-da0e-465b-a4f2-ff615f780639" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_1031bb87-23c1-4594-a4a3-5ebc6be6394f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_da85cd51-da0e-465b-a4f2-ff615f780639" xlink:to="loc_us-gaap_Revenues_1031bb87-23c1-4594-a4a3-5ebc6be6394f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_3ea79f06-4c62-4f1f-88bd-4e8d56f3bdba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_OperatingExpensesAbstract_3ea79f06-4c62-4f1f-88bd-4e8d56f3bdba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_0be9c6f0-aa43-4374-84aa-fb837630e97d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_3ea79f06-4c62-4f1f-88bd-4e8d56f3bdba" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_0be9c6f0-aa43-4374-84aa-fb837630e97d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_5277488f-0efe-4e03-9bc7-4c2fd7d3b141" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_3ea79f06-4c62-4f1f-88bd-4e8d56f3bdba" xlink:to="loc_us-gaap_DepreciationAndAmortization_5277488f-0efe-4e03-9bc7-4c2fd7d3b141" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_4d92b225-9bf6-4bfd-a51a-a718ff51c44a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxesExcludingIncomeAndExciseTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_3ea79f06-4c62-4f1f-88bd-4e8d56f3bdba" xlink:to="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_4d92b225-9bf6-4bfd-a51a-a718ff51c44a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_f6354f6c-6211-4646-8def-305e31edecb8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_3ea79f06-4c62-4f1f-88bd-4e8d56f3bdba" xlink:to="loc_us-gaap_OperatingExpenses_f6354f6c-6211-4646-8def-305e31edecb8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_baf41f95-6315-4287-8214-c1ae5d55cc13" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_OperatingIncomeLoss_baf41f95-6315-4287-8214-c1ae5d55cc13" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNet_f6962cbf-8747-4cb3-8311-73178a5cfceb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:to="loc_us-gaap_InvestmentIncomeNet_f6962cbf-8747-4cb3-8311-73178a5cfceb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_e3f5fbbc-de86-45e4-9099-482c78fd01e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:to="loc_us-gaap_OtherIncome_e3f5fbbc-de86-45e4-9099-482c78fd01e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_9046292c-1c9c-41fc-8794-2dd5689f24b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_9046292c-1c9c-41fc-8794-2dd5689f24b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingExpense_39de673f-6235-4a5e-a994-22982c022834" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:to="loc_us-gaap_OtherNonoperatingExpense_39de673f-6235-4a5e-a994-22982c022834" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_8f219446-2b8d-47e9-b0b3-5a080f851aaa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_5f7709ac-7108-4df4-ad2e-ff376f832f32" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_8f219446-2b8d-47e9-b0b3-5a080f851aaa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncomeBeforeInterestIncomeInterestExpenseAndIncomeTaxes_ab3e3d3d-d6a6-4003-8f2f-e757d5eb8f70" xlink:href="ed-20221231.xsd#ed_IncomeBeforeInterestIncomeInterestExpenseAndIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_ed_IncomeBeforeInterestIncomeInterestExpenseAndIncomeTaxes_ab3e3d3d-d6a6-4003-8f2f-e757d5eb8f70" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseAbstract_01f676c0-0976-4112-ad3f-af8bcd63b868" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_InterestExpenseAbstract_01f676c0-0976-4112-ad3f-af8bcd63b868" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_ef162374-a49a-4c92-b0e1-4a45187171c9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_01f676c0-0976-4112-ad3f-af8bcd63b868" xlink:to="loc_us-gaap_InterestExpenseDebt_ef162374-a49a-4c92-b0e1-4a45187171c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_InterestExpenseIncomeOtherNet_fe56d8ea-594a-4d18-add1-c1c19f1c3772" xlink:href="ed-20221231.xsd#ed_InterestExpenseIncomeOtherNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_01f676c0-0976-4112-ad3f-af8bcd63b868" xlink:to="loc_ed_InterestExpenseIncomeOtherNet_fe56d8ea-594a-4d18-add1-c1c19f1c3772" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions_f28dfcd9-915d-4bc1-859d-7c187e4b91aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_01f676c0-0976-4112-ad3f-af8bcd63b868" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions_f28dfcd9-915d-4bc1-859d-7c187e4b91aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_e2f242cc-1205-4631-bcb7-3b2747c4af85" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InterestExpenseAbstract_01f676c0-0976-4112-ad3f-af8bcd63b868" xlink:to="loc_us-gaap_InterestExpense_e2f242cc-1205-4631-bcb7-3b2747c4af85" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_61b5d127-231b-430e-8055-2cc95764a272" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_61b5d127-231b-430e-8055-2cc95764a272" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_2ef82972-946a-4a60-b12c-39f5ac440ce3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_2ef82972-946a-4a60-b12c-39f5ac440ce3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_db34e78e-f8ee-4015-876e-819f4252d792" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_ProfitLoss_db34e78e-f8ee-4015-876e-819f4252d792" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_ba6f02f2-55ad-4fc4-ae82-792765a1ede4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_ba6f02f2-55ad-4fc4-ae82-792765a1ede4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_eabd25fd-f7c3-4064-a4b6-3151b747eca0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_NetIncomeLoss_eabd25fd-f7c3-4064-a4b6-3151b747eca0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_e6f5b2d2-804c-4af7-8b7c-9d92a8111b4b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_EarningsPerShareBasic_e6f5b2d2-804c-4af7-8b7c-9d92a8111b4b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_5b49a21e-b88b-4feb-b603-2326a0e5f380" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_EarningsPerShareDiluted_5b49a21e-b88b-4feb-b603-2326a0e5f380" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_76fd8514-a383-46e9-be53-26f29d6b7125" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_76fd8514-a383-46e9-be53-26f29d6b7125" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_c0fdfeb3-08ad-45d1-b569-9cef4f9c5cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_c0fdfeb3-08ad-45d1-b569-9cef4f9c5cc9" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_cc6a9ec9-ffc2-480e-ae26-b092d9348526" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_62291dcb-253b-4ca1-bbc7-97e40444f91e" xlink:to="loc_us-gaap_StatementTable_cc6a9ec9-ffc2-480e-ae26-b092d9348526" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_328bf483-886b-4413-85c1-a69618ef5896" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_cc6a9ec9-ffc2-480e-ae26-b092d9348526" xlink:to="loc_srt_ProductOrServiceAxis_328bf483-886b-4413-85c1-a69618ef5896" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_328bf483-886b-4413-85c1-a69618ef5896_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_328bf483-886b-4413-85c1-a69618ef5896" xlink:to="loc_srt_ProductsAndServicesDomain_328bf483-886b-4413-85c1-a69618ef5896_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_328bf483-886b-4413-85c1-a69618ef5896" xlink:to="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricityMember_e855bd15-78e0-4299-b506-2af1dc82b226" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_us-gaap_ElectricityMember_e855bd15-78e0-4299-b506-2af1dc82b226" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPurchasedMember_cbd91ddc-6f69-45c7-9c68-448d16fc5aad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OilAndGasPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_us-gaap_OilAndGasPurchasedMember_cbd91ddc-6f69-45c7-9c68-448d16fc5aad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SteamMember_b2ece38a-e27f-4a12-b2d3-d3f8935ddfc2" xlink:href="ed-20221231.xsd#ed_SteamMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_ed_SteamMember_b2ece38a-e27f-4a12-b2d3-d3f8935ddfc2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonUtilityProductsAndServicesMember_0549a81e-c79c-409a-ae5b-af59aacdc77d" xlink:href="ed-20221231.xsd#ed_NonUtilityProductsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_ed_NonUtilityProductsAndServicesMember_0549a81e-c79c-409a-ae5b-af59aacdc77d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricityPurchasedMember_4c17ccef-0893-48c8-8976-db74f28adb87" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricityPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_us-gaap_ElectricityPurchasedMember_4c17ccef-0893-48c8-8976-db74f28adb87" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FuelMember_fbfd4097-b32d-4cf8-94d7-fda3b8d3e490" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_FuelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_srt_FuelMember_fbfd4097-b32d-4cf8-94d7-fda3b8d3e490" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasOperationAndMaintenanceMember_3a485a3a-711d-4868-a18d-a0a72f288582" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OilAndGasOperationAndMaintenanceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_6eb1a463-2582-4238-b822-05d1c56d3140" xlink:to="loc_us-gaap_OilAndGasOperationAndMaintenanceMember_3a485a3a-711d-4868-a18d-a0a72f288582" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofCashFlows" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofCashFlows"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofCashFlows" xlink:type="extended" id="i75482b2c9b7643138fcbcd4dc1bf398a_ConsolidatedStatementofCashFlows">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_efda8afb-c7b4-430b-80de-de6ae0c8c023" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_efda8afb-c7b4-430b-80de-de6ae0c8c023" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_58cf04ad-db23-40ef-8f5f-d8c1e6a9233d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_efda8afb-c7b4-430b-80de-de6ae0c8c023" xlink:to="loc_us-gaap_ProfitLoss_58cf04ad-db23-40ef-8f5f-d8c1e6a9233d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_efda8afb-c7b4-430b-80de-de6ae0c8c023" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_9247f2cd-6897-4dc5-94db-f5bf3bcc6fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:to="loc_us-gaap_DepreciationAndAmortization_9247f2cd-6897-4dc5-94db-f5bf3bcc6fbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_0f5b0c81-e3ca-475f-9dcd-c791471e1fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:to="loc_us-gaap_AssetImpairmentCharges_0f5b0c81-e3ca-475f-9dcd-c791471e1fd2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_2c255ac5-9293-4c21-a9af-09b63d509146" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_2c255ac5-9293-4c21-a9af-09b63d509146" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfDerivatives_d2388c10-c28f-40fe-970c-5deff436fb3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnSaleOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:to="loc_us-gaap_GainLossOnSaleOfDerivatives_d2388c10-c28f-40fe-970c-5deff436fb3f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_b305c9b7-1c06-45fb-b79c-19c79bd624ba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_b305c9b7-1c06-45fb-b79c-19c79bd624ba" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_75fc19be-b538-43e7-a7dd-01424cd46e49" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_ec6e85ae-da91-4d33-92d4-24993e1221a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_ec6e85ae-da91-4d33-92d4-24993e1221a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ContractwithCustomerLiabilityUnbilledRevenueAccrualsAndDeferrals_e33cc05a-b75b-4183-b4d1-4cfe1d4d707f" xlink:href="ed-20221231.xsd#ed_ContractwithCustomerLiabilityUnbilledRevenueAccrualsAndDeferrals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_ed_ContractwithCustomerLiabilityUnbilledRevenueAccrualsAndDeferrals_e33cc05a-b75b-4183-b4d1-4cfe1d4d707f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_bff23a70-ee9e-4b3f-8c58-2e4113abcc25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_bff23a70-ee9e-4b3f-8c58-2e4113abcc25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_11f41ded-419a-4669-ac76-ca361f424915" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_11f41ded-419a-4669-ac76-ca361f424915" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherReceivables_26c32ca4-27f5-496f-a6ed-f29d07cd9478" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherReceivables_26c32ca4-27f5-496f-a6ed-f29d07cd9478" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_b7cfb5b9-cc49-4deb-a649-894f2d1ee3bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_b7cfb5b9-cc49-4deb-a649-894f2d1ee3bf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_6d4a645c-5d92-44d2-b7f2-b5143d4fbf71" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_6d4a645c-5d92-44d2-b7f2-b5143d4fbf71" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_933e2c8c-ab51-41b0-bc1a-8c7cec38baa1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionAndOtherPostretirementBenefitContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_933e2c8c-ab51-41b0-bc1a-8c7cec38baa1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable_ce8ef0a4-765c-4eb6-8b9d-cc639fcfdb3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable_ce8ef0a4-765c-4eb6-8b9d-cc639fcfdb3f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_8bf3d7de-8334-48ad-b217-f0f962a89b84" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_8bf3d7de-8334-48ad-b217-f0f962a89b84" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncreaseDecreaseinSystemBenefitChargeLiability_e78610c4-000c-4c0f-b9aa-d7e06257da4c" xlink:href="ed-20221231.xsd#ed_IncreaseDecreaseinSystemBenefitChargeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_ed_IncreaseDecreaseinSystemBenefitChargeLiability_e78610c4-000c-4c0f-b9aa-d7e06257da4c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredCharges_2fcece48-d4e5-4331-814e-17d1e1e559c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDeferredCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredCharges_2fcece48-d4e5-4331-814e-17d1e1e559c8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredLiabilities_8c125602-bae1-4de5-8d3f-ca9c7ca7d297" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDeferredLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredLiabilities_8c125602-bae1-4de5-8d3f-ca9c7ca7d297" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_b010953e-7044-4007-9547-3fe0d01730ee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_997bef7d-2c85-4815-a4bf-2b3637ebc8b7" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_b010953e-7044-4007-9547-3fe0d01730ee" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_fd12c15f-4605-4517-90b5-262b15ba0802" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_efda8afb-c7b4-430b-80de-de6ae0c8c023" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_fd12c15f-4605-4517-90b5-262b15ba0802" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForConstructionInProcess_c97e94e9-94ea-4e78-aa10-ff9293636d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForConstructionInProcess"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_PaymentsForConstructionInProcess_c97e94e9-94ea-4e78-aa10-ff9293636d4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromRemovalCosts_8da82051-bb0f-4777-a429-d90f70671db4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForProceedsFromRemovalCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_PaymentsForProceedsFromRemovalCosts_8da82051-bb0f-4777-a429-d90f70671db4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PaymentsNonUtilityConstructionExpenditures_b0c88ea7-014a-4887-bbdb-d76726b8ce63" xlink:href="ed-20221231.xsd#ed_PaymentsNonUtilityConstructionExpenditures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_ed_PaymentsNonUtilityConstructionExpenditures_b0c88ea7-014a-4887-bbdb-d76726b8ce63" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProjects_ee3e67e4-a958-47b3-bbda-600af0f7ef13" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireProjects"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_PaymentsToAcquireProjects_ee3e67e4-a958-47b3-bbda-600af0f7ef13" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_a4024026-afb4-424d-87dc-90c70a01a23a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_ProceedsFromSaleOfProductiveAssets_a4024026-afb4-424d-87dc-90c70a01a23a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_9c2c9579-614f-4b22-bab8-66bf97281cdd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_9c2c9579-614f-4b22-bab8-66bf97281cdd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_4975f22b-38cf-46fe-a1bc-524536d9b539" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_4975f22b-38cf-46fe-a1bc-524536d9b539" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_787a502c-d2b8-4cad-8df7-8e28700e6180" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_0bf1a0c4-9169-44e6-bdc6-b058707d2fac" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_787a502c-d2b8-4cad-8df7-8e28700e6180" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_0984ceeb-961c-4fce-920c-003d48917354" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_0984ceeb-961c-4fce-920c-003d48917354" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_6db2b11b-832f-4825-bc9a-10a5c4f67870" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_6db2b11b-832f-4825-bc9a-10a5c4f67870" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_a6d233f3-fa44-425c-8981-53d3609d0430" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_a6d233f3-fa44-425c-8981-53d3609d0430" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_7a784817-301b-492e-b858-8054f39e6e83" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_7a784817-301b-492e-b858-8054f39e6e83" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_63a3a3e2-b112-4285-bd87-14c5ee8761cc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_63a3a3e2-b112-4285-bd87-14c5ee8761cc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_49d7c157-6681-42a2-8b0c-e53cda9e38e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_49d7c157-6681-42a2-8b0c-e53cda9e38e2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_0e2bd561-f2d9-4332-a1cd-a65e30e5db5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_0e2bd561-f2d9-4332-a1cd-a65e30e5db5c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsMinorityInterest_d0bcdb6d-41a0-4655-9888-084ca258f1a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDividendsMinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_PaymentsOfDividendsMinorityInterest_d0bcdb6d-41a0-4655-9888-084ca258f1a6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromOtherEquity_069a8c21-cf26-4bbb-b23d-d2d18cd94f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromOtherEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_ProceedsFromOtherEquity_069a8c21-cf26-4bbb-b23d-d2d18cd94f1d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5d0d7f58-abf6-4a06-9d66-99c9870be8e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_becb0bf4-6f94-4f4b-905c-f719862529eb" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5d0d7f58-abf6-4a06-9d66-99c9870be8e3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_30421faf-3099-4248-8233-f342ad284545" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_30421faf-3099-4248-8233-f342ad284545" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d971f918-201f-4fac-b953-707bf6dc21a3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_30421faf-3099-4248-8233-f342ad284545" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_d971f918-201f-4fac-b953-707bf6dc21a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_5ac44533-2341-45b9-a04e-30f51eae7d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_30421faf-3099-4248-8233-f342ad284545" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_5ac44533-2341-45b9-a04e-30f51eae7d5f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_268cbc5f-654c-4260-9015-5e9cf5abef8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_08856938-d99c-46fd-b941-1f23d2174bd8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsHeldForSalePeriodIncreaseDecreaseIncludingExchangeRateEffect_375ae1ad-0a0b-4987-8ea5-572240fa3cc8" xlink:href="ed-20221231.xsd#ed_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsHeldForSalePeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_30421faf-3099-4248-8233-f342ad284545" xlink:to="loc_ed_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsHeldForSalePeriodIncreaseDecreaseIncludingExchangeRateEffect_375ae1ad-0a0b-4987-8ea5-572240fa3cc8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsExcludingCashHeldForSale_a586e7b8-0e2a-4029-89a7-a478184131fb" xlink:href="ed-20221231.xsd#ed_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsExcludingCashHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_30421faf-3099-4248-8233-f342ad284545" xlink:to="loc_ed_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsExcludingCashHeldForSale_a586e7b8-0e2a-4029-89a7-a478184131fb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_4f147717-63f3-4259-93a5-520f5b3ab766" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_4f147717-63f3-4259-93a5-520f5b3ab766" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_b0650681-c94b-43ed-868a-2579a12e1612" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_4f147717-63f3-4259-93a5-520f5b3ab766" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_b0650681-c94b-43ed-868a-2579a12e1612" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_6db42d07-6cab-4105-98a5-eb7da7a7cdd4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_b0650681-c94b-43ed-868a-2579a12e1612" xlink:to="loc_us-gaap_InterestPaidNet_6db42d07-6cab-4105-98a5-eb7da7a7cdd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_067c9612-6ae9-439a-b329-fff1b7d78916" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_b0650681-c94b-43ed-868a-2579a12e1612" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_067c9612-6ae9-439a-b329-fff1b7d78916" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_77f99c61-00af-4994-898c-9d855283dfb6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_77f99c61-00af-4994-898c-9d855283dfb6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_e23a7bf9-8608-45c1-8681-545acc634ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_77f99c61-00af-4994-898c-9d855283dfb6" xlink:to="loc_us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_e23a7bf9-8608-45c1-8681-545acc634ad8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_fbaa8079-644f-4aab-a6bb-bcddf259d2e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_77f99c61-00af-4994-898c-9d855283dfb6" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_fbaa8079-644f-4aab-a6bb-bcddf259d2e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_c375e884-709b-4f43-aa39-bf22f674ef27" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_77f99c61-00af-4994-898c-9d855283dfb6" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_c375e884-709b-4f43-aa39-bf22f674ef27" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_078755c7-a4e1-4840-9621-0bb662a0b51c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_77eb7cf6-379c-4aff-baa0-c4a5770632ed" xlink:to="loc_us-gaap_StatementTable_078755c7-a4e1-4840-9621-0bb662a0b51c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_173bb8b7-45ab-4b34-ba79-438aacfd25f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_078755c7-a4e1-4840-9621-0bb662a0b51c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_173bb8b7-45ab-4b34-ba79-438aacfd25f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_173bb8b7-45ab-4b34-ba79-438aacfd25f8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_173bb8b7-45ab-4b34-ba79-438aacfd25f8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_173bb8b7-45ab-4b34-ba79-438aacfd25f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_490bf1db-48ee-4bd2-b7d8-a94189c58ce9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_173bb8b7-45ab-4b34-ba79-438aacfd25f8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_490bf1db-48ee-4bd2-b7d8-a94189c58ce9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SoftwareLicensesMember_55c8f2d0-4de9-4817-98e0-351c8eee96a8" xlink:href="ed-20221231.xsd#ed_SoftwareLicensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_490bf1db-48ee-4bd2-b7d8-a94189c58ce9" xlink:to="loc_ed_SoftwareLicensesMember_55c8f2d0-4de9-4817-98e0-351c8eee96a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_9729d8d5-658e-4403-aac3-1515af61262b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_490bf1db-48ee-4bd2-b7d8-a94189c58ce9" xlink:to="loc_us-gaap_EquipmentMember_9729d8d5-658e-4403-aac3-1515af61262b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5377c72e-d4d0-48ac-9a9d-49767450c383" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_078755c7-a4e1-4840-9621-0bb662a0b51c" xlink:to="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5377c72e-d4d0-48ac-9a9d-49767450c383" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_5377c72e-d4d0-48ac-9a9d-49767450c383_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5377c72e-d4d0-48ac-9a9d-49767450c383" xlink:to="loc_us-gaap_ProjectMember_5377c72e-d4d0-48ac-9a9d-49767450c383_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_05c85f29-f5ea-4091-82bc-c3580c72e11d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_5377c72e-d4d0-48ac-9a9d-49767450c383" xlink:to="loc_us-gaap_ProjectMember_05c85f29-f5ea-4091-82bc-c3580c72e11d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricAndGasTransmissionProjectsMember_40fd85d6-a5e7-4d87-aa92-44af690a1cb0" xlink:href="ed-20221231.xsd#ed_ElectricAndGasTransmissionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_05c85f29-f5ea-4091-82bc-c3580c72e11d" xlink:to="loc_ed_ElectricAndGasTransmissionProjectsMember_40fd85d6-a5e7-4d87-aa92-44af690a1cb0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RenewableElectricProductionProjectsMember_6b978de6-d75a-4d20-9fdd-5a57d5d6f7a9" xlink:href="ed-20221231.xsd#ed_RenewableElectricProductionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_05c85f29-f5ea-4091-82bc-c3580c72e11d" xlink:to="loc_ed_RenewableElectricProductionProjectsMember_6b978de6-d75a-4d20-9fdd-5a57d5d6f7a9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedBalanceSheet" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedBalanceSheet"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedBalanceSheet" xlink:type="extended" id="i7f84bbb65e5644da84195a27907d5545_ConsolidatedBalanceSheet">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_3144fde1-4c1d-4192-a522-183e041d6d30" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_3144fde1-4c1d-4192-a522-183e041d6d30" xlink:to="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:to="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_b79cc174-3049-4655-a10a-a7541cc19e15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_b79cc174-3049-4655-a10a-a7541cc19e15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_b7166607-6d2d-4cee-881b-b48cb9dc0c59" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_b7166607-6d2d-4cee-881b-b48cb9dc0c59" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivables_8647ac69-c334-4b59-b4ca-0f47cc035198" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_OtherReceivables_8647ac69-c334-4b59-b4ca-0f47cc035198" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_927b0b32-d6ef-4839-9ec0-b04cdd826c39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_IncomeTaxesReceivable_927b0b32-d6ef-4839-9ec0-b04cdd826c39" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_b30bc975-41bc-4c20-9c08-f8c7965041e1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_b30bc975-41bc-4c20-9c08-f8c7965041e1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost_60ba7110-4305-4501-97d6-58883c88ddf7" xlink:href="ed-20221231.xsd#ed_EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_ed_EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost_60ba7110-4305-4501-97d6-58883c88ddf7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_3ad16ccc-b435-413f-8ebd-843768b32822" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_3ad16ccc-b435-413f-8ebd-843768b32822" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_8bcb8851-729a-4502-8c5e-d4d79934b135" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_8bcb8851-729a-4502-8c5e-d4d79934b135" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_706c3189-1b44-495c-8791-bffe724f750d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_706c3189-1b44-495c-8791-bffe724f750d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueDecouplingMechanismReceivable_3a81a7d9-4708-431d-a360-8e6ec3a678b3" xlink:href="ed-20221231.xsd#ed_RevenueDecouplingMechanismReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_ed_RevenueDecouplingMechanismReceivable_3a81a7d9-4708-431d-a360-8e6ec3a678b3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_83fad6b2-029c-4dff-8f9f-0c9bc7cbebdd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_83fad6b2-029c-4dff-8f9f-0c9bc7cbebdd" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_3d00165e-9914-4354-96a1-80c0cee3e029" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_3d00165e-9914-4354-96a1-80c0cee3e029" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_ae778378-c35f-4311-9c0d-319c9181760b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_OtherAssetsCurrent_ae778378-c35f-4311-9c0d-319c9181760b" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_5f614b97-b202-4590-b0e9-b96f5cbe3478" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_bab71aa2-7c02-4740-a695-9c815b68edd4" xlink:to="loc_us-gaap_AssetsCurrent_5f614b97-b202-4590-b0e9-b96f5cbe3478" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_bdd13318-9cf7-4f24-ac56-d332784f6784" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:to="loc_us-gaap_LongTermInvestments_bdd13318-9cf7-4f24-ac56-d332784f6784" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_c6d8e338-fdd1-4dd4-8ff5-09e579bd06a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_c6d8e338-fdd1-4dd4-8ff5-09e579bd06a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_0b1122f1-4150-4540-9924-1a8c193233d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_0b1122f1-4150-4540-9924-1a8c193233d2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_49be85ea-63e5-45c6-ac0f-9fb8db8ff46d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_49be85ea-63e5-45c6-ac0f-9fb8db8ff46d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_497db9d7-8720-4c10-8c4a-7037d9884f1e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_497db9d7-8720-4c10-8c4a-7037d9884f1e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NetUtilityPlant_a68e54d3-e43f-4915-b440-8a810c3fd2c8" xlink:href="ed-20221231.xsd#ed_NetUtilityPlant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_ed_NetUtilityPlant_a68e54d3-e43f-4915-b440-8a810c3fd2c8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_6be82546-50f6-43d5-b3c0-16b26e36c878" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_6be82546-50f6-43d5-b3c0-16b26e36c878" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_eee1bc21-302d-4060-b344-68e91a752bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_3fd38ca7-ac73-47e4-829d-fc0c31e4667e" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_eee1bc21-302d-4060-b344-68e91a752bc1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9f3e0bab-e33c-4b74-a41f-cee48f2441ef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9f3e0bab-e33c-4b74-a41f-cee48f2441ef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonUtilityPropertyNet_87a56732-a02d-455b-9c09-0b5ee129e94b" xlink:href="ed-20221231.xsd#ed_NonUtilityPropertyNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9f3e0bab-e33c-4b74-a41f-cee48f2441ef" xlink:to="loc_ed_NonUtilityPropertyNet_87a56732-a02d-455b-9c09-0b5ee129e94b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressGross_73c292e3-21a2-4827-b120-93ffc13a1aa2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConstructionInProgressGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9f3e0bab-e33c-4b74-a41f-cee48f2441ef" xlink:to="loc_us-gaap_ConstructionInProgressGross_73c292e3-21a2-4827-b120-93ffc13a1aa2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_353a65a1-fb0e-41bb-b26e-e7073e2a3a53" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_9f3e0bab-e33c-4b74-a41f-cee48f2441ef" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_353a65a1-fb0e-41bb-b26e-e7073e2a3a53" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:to="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_9d885046-d718-40cf-994a-b7916e99d106" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_Goodwill_9d885046-d718-40cf-994a-b7916e99d106" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_cd82dd78-8aad-4b8e-b42d-0301b9f74c3e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_cd82dd78-8aad-4b8e-b42d-0301b9f74c3e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_52fd737b-945b-4eba-a9e8-d7a2a3a79cf9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_52fd737b-945b-4eba-a9e8-d7a2a3a79cf9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_2f200f01-8ee2-46d5-847c-dd598714fb29" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_2f200f01-8ee2-46d5-847c-dd598714fb29" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7d23f0c2-9c3c-43cd-bffd-261c9458fd75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7d23f0c2-9c3c-43cd-bffd-261c9458fd75" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_6f804d39-3541-4469-bb38-47e0aa827f0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_6f804d39-3541-4469-bb38-47e0aa827f0c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_c5e1585e-9fc7-41d0-9ff9-beb4e5cc7816" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_c5e1585e-9fc7-41d0-9ff9-beb4e5cc7816" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_9f0f8d0f-0d4c-42c4-8b9d-89bf663725d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_0452ddb7-b388-4ecb-b324-1fef956f6ffc" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_9f0f8d0f-0d4c-42c4-8b9d-89bf663725d4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_783bea93-0472-4f19-85f0-2fc7c5c0ecee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_77d2c728-c430-4c79-85f0-929fd65f4e12" xlink:to="loc_us-gaap_Assets_783bea93-0472-4f19-85f0-2fc7c5c0ecee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_3144fde1-4c1d-4192-a522-183e041d6d30" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LongTermDebtCurrentMaturitiesExcludingHeldForSale_11b4fdf0-1ca0-4332-bcb0-8678c381d054" xlink:href="ed-20221231.xsd#ed_LongTermDebtCurrentMaturitiesExcludingHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_ed_LongTermDebtCurrentMaturitiesExcludingHeldForSale_11b4fdf0-1ca0-4332-bcb0-8678c381d054" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_9505db72-353c-4acf-a2b9-2329c8281f43" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_ShortTermBorrowings_9505db72-353c-4acf-a2b9-2329c8281f43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableCurrent_232b2734-1eed-4e28-8069-7fc7fa354549" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_NotesPayableCurrent_232b2734-1eed-4e28-8069-7fc7fa354549" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_69485d49-03da-4a9e-a13c-41fb573c9934" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_AccountsPayableCurrent_69485d49-03da-4a9e-a13c-41fb573c9934" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerRefundLiabilityCurrent_6a7912c7-0f74-4287-ada9-ad90f530ba6c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerRefundLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_ContractWithCustomerRefundLiabilityCurrent_6a7912c7-0f74-4287-ada9-ad90f530ba6c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrent_3aae2ceb-94d9-44c9-868a-03c3bf70ed58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_TaxesPayableCurrent_3aae2ceb-94d9-44c9-868a-03c3bf70ed58" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_0e1956fc-a10f-497a-b9da-b42fdd98a674" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_InterestPayableCurrent_0e1956fc-a10f-497a-b9da-b42fdd98a674" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_0577ae89-e6cb-468f-934c-9ea4ead60ee4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_0577ae89-e6cb-468f-934c-9ea4ead60ee4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_ac21d46b-eb7c-4d22-ba39-3dccd1ce8823" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_ac21d46b-eb7c-4d22-ba39-3dccd1ce8823" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_c767ca7a-b82a-410e-9c62-ef97b0ef6915" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_c767ca7a-b82a-410e-9c62-ef97b0ef6915" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SystemBenefitsChargeLiabilityCurrent_631c2a8c-f50e-4e6a-8d68-2fc3d68f2e78" xlink:href="ed-20221231.xsd#ed_SystemBenefitsChargeLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_ed_SystemBenefitsChargeLiabilityCurrent_631c2a8c-f50e-4e6a-8d68-2fc3d68f2e78" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_3c8b38b1-fdba-42eb-a171-3fad1fe3e4e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_3c8b38b1-fdba-42eb-a171-3fad1fe3e4e6" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_b2e4757b-652f-4a8c-9a23-63fd254dbd8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_b2e4757b-652f-4a8c-9a23-63fd254dbd8d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_45ed5d36-c8f6-4db4-b6a1-792af575532e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_45ed5d36-c8f6-4db4-b6a1-792af575532e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_f70cc8a9-bf0b-4b9b-8ae1-ed0665557d11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_c8fa1886-2f44-4c3e-925d-d1109203a234" xlink:to="loc_us-gaap_LiabilitiesCurrent_f70cc8a9-bf0b-4b9b-8ae1-ed0665557d11" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProvisionForInjuriesAndDamages_cd5accd1-4a03-4968-aba0-fa3ad09dc19b" xlink:href="ed-20221231.xsd#ed_ProvisionForInjuriesAndDamages"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_ed_ProvisionForInjuriesAndDamages_cd5accd1-4a03-4968-aba0-fa3ad09dc19b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_92a8f895-80b4-41f4-889b-d29e88660575" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_92a8f895-80b4-41f4-889b-d29e88660575" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_3b9d3f41-142e-4ce5-82c0-869cb8bdafea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_3b9d3f41-142e-4ce5-82c0-869cb8bdafea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_6c6e32d3-5193-4a6b-82de-df451eb13da8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_6c6e32d3-5193-4a6b-82de-df451eb13da8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_dce6b48a-92b1-4064-aa33-d4aa2ae9fdd1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_dce6b48a-92b1-4064-aa33-d4aa2ae9fdd1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit_1925faa4-52e2-47ab-a524-9e9b8770f66f" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_ed_DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit_1925faa4-52e2-47ab-a524-9e9b8770f66f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_6fbc6f45-474e-4d0f-9a85-789a2b8aea37" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_6fbc6f45-474e-4d0f-9a85-789a2b8aea37" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_c186636d-d047-4c15-9558-2b83e2989818" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_c186636d-d047-4c15-9558-2b83e2989818" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent_9378bdc3-bb9c-4525-8f62-848cf9daba8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent_9378bdc3-bb9c-4525-8f62-848cf9daba8d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_74ae78db-63bf-4642-ac32-d184dfbc2ac0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_76fb627e-9d04-494a-819d-f379a83e0a50" xlink:to="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_74ae78db-63bf-4642-ac32-d184dfbc2ac0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LongTermDebtExcludingHeldForSale_ad4a3380-5c0a-4111-b891-2f33ab1bf779" xlink:href="ed-20221231.xsd#ed_LongTermDebtExcludingHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:to="loc_ed_LongTermDebtExcludingHeldForSale_ad4a3380-5c0a-4111-b891-2f33ab1bf779" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_b0585aee-4201-46dc-aed4-efe9d320b313" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:to="loc_us-gaap_CommitmentsAndContingencies_b0585aee-4201-46dc-aed4-efe9d320b313" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_f4e93538-7524-403e-a578-533df0f5dc1c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_f4e93538-7524-403e-a578-533df0f5dc1c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_a2f0968b-a664-443c-b726-9819c145fa75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_f4e93538-7524-403e-a578-533df0f5dc1c" xlink:to="loc_us-gaap_StockholdersEquity_a2f0968b-a664-443c-b726-9819c145fa75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_02376fe6-7b0d-4943-a644-eeeceef685ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_f4e93538-7524-403e-a578-533df0f5dc1c" xlink:to="loc_us-gaap_MinorityInterest_02376fe6-7b0d-4943-a644-eeeceef685ce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_c94d43bd-1a10-4029-b7fc-7ed1a3e9160b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_f4e93538-7524-403e-a578-533df0f5dc1c" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_c94d43bd-1a10-4029-b7fc-7ed1a3e9160b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_37dbbf8b-8254-40d8-a054-881d26a4556c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d1bf33e7-1196-4ea8-937c-1a9aaff607e3" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_37dbbf8b-8254-40d8-a054-881d26a4556c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ed6dc934-29e0-4bde-a0b6-494125e2d21e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_3144fde1-4c1d-4192-a522-183e041d6d30" xlink:to="loc_us-gaap_StatementTable_ed6dc934-29e0-4bde-a0b6-494125e2d21e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_076560c7-2563-48f4-8db9-63444e75ba22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ed6dc934-29e0-4bde-a0b6-494125e2d21e" xlink:to="loc_us-gaap_PublicUtilityAxis_076560c7-2563-48f4-8db9-63444e75ba22" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_076560c7-2563-48f4-8db9-63444e75ba22_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_076560c7-2563-48f4-8db9-63444e75ba22" xlink:to="loc_us-gaap_UtilityPlantDomain_076560c7-2563-48f4-8db9-63444e75ba22_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_f87597c9-b735-4d44-a486-e36b97442ba4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_076560c7-2563-48f4-8db9-63444e75ba22" xlink:to="loc_us-gaap_UtilityPlantDomain_f87597c9-b735-4d44-a486-e36b97442ba4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_26c611c7-a1b7-4ccb-9625-c0f1ceabede6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_f87597c9-b735-4d44-a486-e36b97442ba4" xlink:to="loc_us-gaap_ElectricTransmissionMember_26c611c7-a1b7-4ccb-9625-c0f1ceabede6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_67df8ac8-a448-47e4-963c-1c4b977aa2d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_f87597c9-b735-4d44-a486-e36b97442ba4" xlink:to="loc_us-gaap_GasTransmissionMember_67df8ac8-a448-47e4-963c-1c4b977aa2d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_29080481-957d-42cf-a393-7b268723cd02" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_f87597c9-b735-4d44-a486-e36b97442ba4" xlink:to="loc_us-gaap_SteamPlantMember_29080481-957d-42cf-a393-7b268723cd02" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedBalanceSheetParenthetical" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedBalanceSheetParenthetical"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedBalanceSheetParenthetical" xlink:type="extended" id="i181a7a15a8d342f3b014106c0046a84f_ConsolidatedBalanceSheetParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_d10b537f-bddd-4b3e-9c5e-a8febe7a78ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_ffbd0acc-5d9d-4d69-a9e4-c60be9525cf2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d10b537f-bddd-4b3e-9c5e-a8febe7a78ce" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_ffbd0acc-5d9d-4d69-a9e4-c60be9525cf2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulOtherReceivablesCurrent_ad5cafa7-2429-4455-9e7a-dfdfb58805b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulOtherReceivablesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d10b537f-bddd-4b3e-9c5e-a8febe7a78ce" xlink:to="loc_us-gaap_AllowanceForDoubtfulOtherReceivablesCurrent_ad5cafa7-2429-4455-9e7a-dfdfb58805b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_24280923-230b-48fb-8c48-ea3c17e05c5d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d10b537f-bddd-4b3e-9c5e-a8febe7a78ce" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_24280923-230b-48fb-8c48-ea3c17e05c5d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_bf4e4380-11bb-4b5b-99ae-d7d04f809d71" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d10b537f-bddd-4b3e-9c5e-a8febe7a78ce" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_bf4e4380-11bb-4b5b-99ae-d7d04f809d71" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_eb734d01-9928-4d17-a0fa-307185d6224a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_d10b537f-bddd-4b3e-9c5e-a8febe7a78ce" xlink:to="loc_us-gaap_StatementTable_eb734d01-9928-4d17-a0fa-307185d6224a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7508cbb2-2c54-44d6-b4a8-fd1379ee74e6" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_eb734d01-9928-4d17-a0fa-307185d6224a" xlink:to="loc_dei_LegalEntityAxis_7508cbb2-2c54-44d6-b4a8-fd1379ee74e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7508cbb2-2c54-44d6-b4a8-fd1379ee74e6_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7508cbb2-2c54-44d6-b4a8-fd1379ee74e6" xlink:to="loc_dei_EntityDomain_7508cbb2-2c54-44d6-b4a8-fd1379ee74e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bb4f5455-c730-4bbc-88cd-3e29c2662f9c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7508cbb2-2c54-44d6-b4a8-fd1379ee74e6" xlink:to="loc_dei_EntityDomain_bb4f5455-c730-4bbc-88cd-3e29c2662f9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_744c9037-bfcc-47ec-8414-6f19f1aab21e" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_bb4f5455-c730-4bbc-88cd-3e29c2662f9c" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_744c9037-bfcc-47ec-8414-6f19f1aab21e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofEquity" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofEquity"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofEquity" xlink:type="extended" id="i8d9a460d128c47c0a8020b9707ded0cc_ConsolidatedStatementofEquity">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_492f2a7c-ea9d-4e36-8b21-891ef538f022" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_492f2a7c-ea9d-4e36-8b21-891ef538f022" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_84e5bf1d-6e11-405f-9a44-ae60fc39e006" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_84e5bf1d-6e11-405f-9a44-ae60fc39e006" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8825ec7c-6dd4-42f9-91df-9f714720d59d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8825ec7c-6dd4-42f9-91df-9f714720d59d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockShares_88eecd6e-e713-4592-9ca8-6585890c8c47" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_TreasuryStockShares_88eecd6e-e713-4592-9ca8-6585890c8c47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_eb598d62-b8ff-4e2e-b06b-48d772d3aad6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_ProfitLoss_eb598d62-b8ff-4e2e-b06b-48d772d3aad6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_31d5f9fb-02d1-41c7-92b6-b78d781e7981" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_DividendsCommonStock_31d5f9fb-02d1-41c7-92b6-b78d781e7981" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_b2ac62e8-b776-4662-9507-e8a067bcffe7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_b2ac62e8-b776-4662-9507-e8a067bcffe7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_73d227cf-7011-4688-9748-e2bccee488c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_73d227cf-7011-4688-9748-e2bccee488c8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_f17a2654-c594-477c-b4da-c1f11e4eff22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_f17a2654-c594-477c-b4da-c1f11e4eff22" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_32765094-d6e9-4e09-91c7-a19361e40339" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_32765094-d6e9-4e09-91c7-a19361e40339" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_c7349d88-5884-4147-bd78-c244d9fdfac0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_c7349d88-5884-4147-bd78-c244d9fdfac0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_9138e07b-4fd7-4d7d-a62b-024b36483a70" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_9138e07b-4fd7-4d7d-a62b-024b36483a70" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest_6cbd5565-0810-49e2-8cce-1d4335b64581" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b6a912cf-a7b7-4f1e-9536-dd9b1b663c75" xlink:to="loc_us-gaap_NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest_6cbd5565-0810-49e2-8cce-1d4335b64581" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_ea7813d0-bf90-4e84-8be2-72c8ecdd5b2c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_0ef2c3b5-ee72-45bb-bfdf-d10bf5794232" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockShares_2afd837a-322e-4a8b-a15a-72d552395cd1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockShares"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_c221da12-ca91-4ae0-97a3-6f315f5f6934" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_492f2a7c-ea9d-4e36-8b21-891ef538f022" xlink:to="loc_us-gaap_StatementTable_c221da12-ca91-4ae0-97a3-6f315f5f6934" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_9b449b59-a425-46a9-bdbf-b07961352187" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_c221da12-ca91-4ae0-97a3-6f315f5f6934" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_9b449b59-a425-46a9-bdbf-b07961352187" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_9b449b59-a425-46a9-bdbf-b07961352187_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_9b449b59-a425-46a9-bdbf-b07961352187" xlink:to="loc_us-gaap_EquityComponentDomain_9b449b59-a425-46a9-bdbf-b07961352187_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_9b449b59-a425-46a9-bdbf-b07961352187" xlink:to="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_e878bbf8-d678-46f9-9681-b6efc9f9e760" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_us-gaap_CommonStockMember_e878bbf8-d678-46f9-9681-b6efc9f9e760" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_c87dfc71-172a-4b7a-a7e7-36a1a8394927" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_c87dfc71-172a-4b7a-a7e7-36a1a8394927" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_02ea091a-1711-4699-be4d-37ceff4447ee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_us-gaap_RetainedEarningsMember_02ea091a-1711-4699-be4d-37ceff4447ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_63d9c622-3bdc-4d75-b054-1b50174f6fb5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_us-gaap_TreasuryStockCommonMember_63d9c622-3bdc-4d75-b054-1b50174f6fb5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherChangesStockholdersEquityMember_6e00febc-f2e9-4050-aa7c-5527ab4eb36d" xlink:href="ed-20221231.xsd#ed_OtherChangesStockholdersEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_ed_OtherChangesStockholdersEquityMember_6e00febc-f2e9-4050-aa7c-5527ab4eb36d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7491d633-3f3c-43c5-9a6b-08400fb3bb51" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7491d633-3f3c-43c5-9a6b-08400fb3bb51" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_b0a49768-0540-44a6-8392-41a10e17086b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_2df50ee4-147e-4090-a0e2-11172ebc2d0d" xlink:to="loc_us-gaap_NoncontrollingInterestMember_b0a49768-0540-44a6-8392-41a10e17086b" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofCapitalizationLongtermDebt" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofCapitalizationLongtermDebt"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofCapitalizationLongtermDebt" xlink:type="extended" id="icad244c45f38419084bdc0a13a064424_ConsolidatedStatementofCapitalizationLongtermDebt">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_a740cc07-458b-4444-9b5a-112873181d23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_a740cc07-458b-4444-9b5a-112873181d23" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_6f920d7b-bf78-4723-8493-1f83f123033c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_6f920d7b-bf78-4723-8493-1f83f123033c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermDebt_ee20cee9-a3e1-43ec-a9d0-1efa5a7164c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_OtherLongTermDebt_ee20cee9-a3e1-43ec-a9d0-1efa5a7164c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_04576801-48ea-458a-b4a7-03e010308a14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_04576801-48ea-458a-b4a7-03e010308a14" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_49884f57-b86e-4324-ae8d-22e17d721072" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_49884f57-b86e-4324-ae8d-22e17d721072" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_2a4c0539-b99e-43a5-a976-f57db607aff9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_LongTermDebt_2a4c0539-b99e-43a5-a976-f57db607aff9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_5e5f29ba-e4cd-439a-9800-906a30824d4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_LongTermDebtCurrent_5e5f29ba-e4cd-439a-9800-906a30824d4a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_34029003-06cc-411d-8c5b-ee1530626346" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_34029003-06cc-411d-8c5b-ee1530626346" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LongTermDebtHeldForSale_f175076a-5f21-4a05-a0a3-e3b0ebf73afd" xlink:href="ed-20221231.xsd#ed_LongTermDebtHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_ed_LongTermDebtHeldForSale_f175076a-5f21-4a05-a0a3-e3b0ebf73afd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LongTermDebtExcludingHeldForSale_65fbabee-da53-4495-8582-98aafe78d2d2" xlink:href="ed-20221231.xsd#ed_LongTermDebtExcludingHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_ed_LongTermDebtExcludingHeldForSale_65fbabee-da53-4495-8582-98aafe78d2d2" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizationLongtermDebtAndEquity_001e9678-d676-4754-a538-f2ce30ed0994" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CapitalizationLongtermDebtAndEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_CapitalizationLongtermDebtAndEquity_001e9678-d676-4754-a538-f2ce30ed0994" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtTable_bf88f0ea-2454-4902-b001-6d9565e3ce33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCapitalizationLongtermDebtTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtLineItems_936b053c-64b2-4899-a06c-f045f29db2ce" xlink:to="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtTable_bf88f0ea-2454-4902-b001-6d9565e3ce33" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_d9dc7225-0821-4970-ae43-3ae27b878542" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtTable_bf88f0ea-2454-4902-b001-6d9565e3ce33" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_d9dc7225-0821-4970-ae43-3ae27b878542" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d9dc7225-0821-4970-ae43-3ae27b878542_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d9dc7225-0821-4970-ae43-3ae27b878542" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d9dc7225-0821-4970-ae43-3ae27b878542_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_7950bb89-3bb7-4392-8194-ff147c9b857b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d9dc7225-0821-4970-ae43-3ae27b878542" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_7950bb89-3bb7-4392-8194-ff147c9b857b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebenturesMember_04e821a4-bc92-4aea-b2db-7ef8b1d5ab97" xlink:href="ed-20221231.xsd#ed_DebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_7950bb89-3bb7-4392-8194-ff147c9b857b" xlink:to="loc_ed_DebenturesMember_04e821a4-bc92-4aea-b2db-7ef8b1d5ab97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtMember_73030a97-9c14-40e4-a7a7-825ce7819f58" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_7950bb89-3bb7-4392-8194-ff147c9b857b" xlink:to="loc_ed_TaxExemptDebtMember_73030a97-9c14-40e4-a7a7-825ce7819f58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_9c9e9745-bd46-495a-91b4-b154c57da6a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtTable_bf88f0ea-2454-4902-b001-6d9565e3ce33" xlink:to="loc_us-gaap_DebtInstrumentAxis_9c9e9745-bd46-495a-91b4-b154c57da6a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9c9e9745-bd46-495a-91b4-b154c57da6a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_9c9e9745-bd46-495a-91b4-b154c57da6a2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9c9e9745-bd46-495a-91b4-b154c57da6a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_9c9e9745-bd46-495a-91b4-b154c57da6a2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020A065PercentDue2023Member_95d1d79a-368b-4d4f-9ebd-d8fe43cc3f0b" xlink:href="ed-20221231.xsd#ed_Debenture2020A065PercentDue2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2020A065PercentDue2023Member_95d1d79a-368b-4d4f-9ebd-d8fe43cc3f0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2014B3.30PercentDue2024Member_04267684-33ea-4197-8507-e84fc7206e93" xlink:href="ed-20221231.xsd#ed_Debenture2014B3.30PercentDue2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2014B3.30PercentDue2024Member_04267684-33ea-4197-8507-e84fc7206e93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2016B2.90Due2026Member_4a28bc38-93ff-4b6c-a853-7286245b6d05" xlink:href="ed-20221231.xsd#ed_DebentureSeries2016B2.90Due2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2016B2.90Due2026Member_4a28bc38-93ff-4b6c-a853-7286245b6d05" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesOneThousandNineHundredAndNinetySevenfSixPointFiveZeroPercentDueTwoThousandTwentySevenMember_a4e8e311-c91e-44d1-b18f-3ea3e433ba47" xlink:href="ed-20221231.xsd#ed_DebentureSeriesOneThousandNineHundredAndNinetySevenfSixPointFiveZeroPercentDueTwoThousandTwentySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesOneThousandNineHundredAndNinetySevenfSixPointFiveZeroPercentDueTwoThousandTwentySevenMember_a4e8e311-c91e-44d1-b18f-3ea3e433ba47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSeventeenBThreePointOneTwoFivePercentDueTwoThousandTwentySevenMember_fd601d66-c206-46c3-9b17-972d47c66806" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSeventeenBThreePointOneTwoFivePercentDueTwoThousandTwentySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSeventeenBThreePointOneTwoFivePercentDueTwoThousandTwentySevenMember_fd601d66-c206-46c3-9b17-972d47c66806" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018A3.800Due2028Member_8249b0c5-0035-4775-a292-015a116f6d00" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018A3.800Due2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2018A3.800Due2028Member_8249b0c5-0035-4775-a292-015a116f6d00" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018D4.000Due2028Member_945f9067-0cb0-44a8-ae77-7a647eebd0cc" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018D4.000Due2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2018D4.000Due2028Member_945f9067-0cb0-44a8-ae77-7a647eebd0cc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019B2.94PercentDue2029Member_d5f97db0-5d47-450b-9742-61bf391ff329" xlink:href="ed-20221231.xsd#ed_Debenture2019B2.94PercentDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2019B2.94PercentDue2029Member_d5f97db0-5d47-450b-9742-61bf391ff329" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020A335PercentDue2030Member_f68a0871-ad6a-497d-9fac-934fc3989f63" xlink:href="ed-20221231.xsd#ed_Debenture2020A335PercentDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2020A335PercentDue2030Member_f68a0871-ad6a-497d-9fac-934fc3989f63" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020A202PercentDue2030Member_446ec3b2-f708-4584-bc70-658fce5544a0" xlink:href="ed-20221231.xsd#ed_Debenture2020A202PercentDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2020A202PercentDue2030Member_446ec3b2-f708-4584-bc70-658fce5544a0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021A240PercentDue2031Member_154139a7-fbf2-4323-8add-70debd9cc48d" xlink:href="ed-20221231.xsd#ed_Debenture2021A240PercentDue2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2021A240PercentDue2031Member_154139a7-fbf2-4323-8add-70debd9cc48d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021A231PercentDue2031Member_ee6db259-5448-4f10-ae20-83081a965f9b" xlink:href="ed-20221231.xsd#ed_Debenture2021A231PercentDue2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2021A231PercentDue2031Member_ee6db259-5448-4f10-ae20-83081a965f9b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2022A570PercentDue2032Member_e8c582dc-5bc7-4c2a-8c65-9fed20f0e6cc" xlink:href="ed-20221231.xsd#ed_Debenture2022A570PercentDue2032Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2022A570PercentDue2032Member_e8c582dc-5bc7-4c2a-8c65-9fed20f0e6cc" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandThreeaFivePointEightSevenFivePercentDueTwoThousandThirtyThreeMember_8e466641-dbe0-4cbf-b4a3-c6d31bf0d7f7" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandThreeaFivePointEightSevenFivePercentDueTwoThousandThirtyThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandThreeaFivePointEightSevenFivePercentDueTwoThousandThirtyThreeMember_8e466641-dbe0-4cbf-b4a3-c6d31bf0d7f7" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandThreeCFivePointOneZeroPercentDueTwoThousandThirtyThreeMember_478c6584-1b96-4432-9090-1ac5cb385521" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandThreeCFivePointOneZeroPercentDueTwoThousandThirtyThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandThreeCFivePointOneZeroPercentDueTwoThousandThirtyThreeMember_478c6584-1b96-4432-9090-1ac5cb385521" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandFourBFivePointSevenZeroPercentDueTwoThousandThirtyFourMember_9ab9b5c6-47e6-4fb9-8d4d-f27f5c81b824" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandFourBFivePointSevenZeroPercentDueTwoThousandThirtyFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandFourBFivePointSevenZeroPercentDueTwoThousandThirtyFourMember_9ab9b5c6-47e6-4fb9-8d4d-f27f5c81b824" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandFiveaFivePointThreeZeroPercentDueTwoThousandThirtyFiveMember_ecb989a7-9eb5-4613-af5e-b15549fe5547" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandFiveaFivePointThreeZeroPercentDueTwoThousandThirtyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandFiveaFivePointThreeZeroPercentDueTwoThousandThirtyFiveMember_ecb989a7-9eb5-4613-af5e-b15549fe5547" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandFiveBFivePointTwoFivePercentDueTwoThousandThirtyFiveMember_7bb64b27-30f0-415f-a411-5f1493eda2b3" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandFiveBFivePointTwoFivePercentDueTwoThousandThirtyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandFiveBFivePointTwoFivePercentDueTwoThousandThirtyFiveMember_7bb64b27-30f0-415f-a411-5f1493eda2b3" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSixaFivePointEightFivePercentDueTwoThousandThirtySixMember_3f842d03-2c0d-431a-beef-42eee196ae28" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSixaFivePointEightFivePercentDueTwoThousandThirtySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSixaFivePointEightFivePercentDueTwoThousandThirtySixMember_3f842d03-2c0d-431a-beef-42eee196ae28" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSixBSixPointTwoZeroPercentDueTwoThousandThirtySixMember_3b3439fc-5afe-4bc3-96e1-9787cb28ce94" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSixBSixPointTwoZeroPercentDueTwoThousandThirtySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSixBSixPointTwoZeroPercentDueTwoThousandThirtySixMember_3b3439fc-5afe-4bc3-96e1-9787cb28ce94" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSixEFivePointSevenZeroPercentDueTwoThousandThirtySixMember_69b11863-dd8d-4b33-a0e6-0699808918ec" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSixEFivePointSevenZeroPercentDueTwoThousandThirtySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSixEFivePointSevenZeroPercentDueTwoThousandThirtySixMember_69b11863-dd8d-4b33-a0e6-0699808918ec" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSevenaSixPointThreeZeroPercentDueTwoThousandThirtySevenMember_7986611f-05ea-4472-af89-9a4fb730486a" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSevenaSixPointThreeZeroPercentDueTwoThousandThirtySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSevenaSixPointThreeZeroPercentDueTwoThousandThirtySevenMember_7986611f-05ea-4472-af89-9a4fb730486a" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2008B6.75PercentDue2038Member_3e9af7a9-2221-4909-b045-e9b77a87e5f6" xlink:href="ed-20221231.xsd#ed_Debenture2008B6.75PercentDue2038Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2008B6.75PercentDue2038Member_3e9af7a9-2221-4909-b045-e9b77a87e5f6" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2009B6.00PercentDue2039Member_b553ff8d-0f0c-4a63-b5db-aa9d3b449808" xlink:href="ed-20221231.xsd#ed_Debenture2009B6.00PercentDue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2009B6.00PercentDue2039Member_b553ff8d-0f0c-4a63-b5db-aa9d3b449808" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2009C5.50PercentDue2039Member_8d6131ab-f97b-40f5-9da4-d86b61712fb0" xlink:href="ed-20221231.xsd#ed_Debenture2009C5.50PercentDue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2009C5.50PercentDue2039Member_8d6131ab-f97b-40f5-9da4-d86b61712fb0" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019C3.46PercentDue2039Member_f17a73da-2e6c-47fa-adc5-97c3a1696e25" xlink:href="ed-20221231.xsd#ed_Debenture2019C3.46PercentDue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2019C3.46PercentDue2039Member_f17a73da-2e6c-47fa-adc5-97c3a1696e25" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2010B5.70PercentDue2040Member_f745e3b9-5f30-458d-b9c9-ee48d89c5ab4" xlink:href="ed-20221231.xsd#ed_Debenture2010B5.70PercentDue2040Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2010B5.70PercentDue2040Member_f745e3b9-5f30-458d-b9c9-ee48d89c5ab4" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2010B5.50PercentDue2040Member_a4ec96a8-3d27-42f6-9d58-7e77bc112b47" xlink:href="ed-20221231.xsd#ed_Debenture2010B5.50PercentDue2040Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2010B5.50PercentDue2040Member_a4ec96a8-3d27-42f6-9d58-7e77bc112b47" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2012A4.20PercentDue2042Member_8fe9f0f3-e3ce-4b78-b825-28c91cb90a68" xlink:href="ed-20221231.xsd#ed_Debenture2012A4.20PercentDue2042Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2012A4.20PercentDue2042Member_8fe9f0f3-e3ce-4b78-b825-28c91cb90a68" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2013A3.95PercentDue2043Member_4fe723ed-dc62-4c8b-9ea8-53bf4b622b97" xlink:href="ed-20221231.xsd#ed_Debenture2013A3.95PercentDue2043Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2013A3.95PercentDue2043Member_4fe723ed-dc62-4c8b-9ea8-53bf4b622b97" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2014A4.45PercentDue2044Member_6cab8425-dc93-4ff7-944e-38c54834cbfc" xlink:href="ed-20221231.xsd#ed_Debenture2014A4.45PercentDue2044Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2014A4.45PercentDue2044Member_6cab8425-dc93-4ff7-944e-38c54834cbfc" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2015A4.50PercentDue2045Member_68346bdc-2612-49f0-bef2-c4720ea42ae1" xlink:href="ed-20221231.xsd#ed_Debenture2015A4.50PercentDue2045Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2015A4.50PercentDue2045Member_68346bdc-2612-49f0-bef2-c4720ea42ae1" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2015A4.95PercentDue2045Member_e696c4b5-7b12-4ef7-98d1-f65b3393fef1" xlink:href="ed-20221231.xsd#ed_Debenture2015A4.95PercentDue2045Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2015A4.95PercentDue2045Member_e696c4b5-7b12-4ef7-98d1-f65b3393fef1" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2015B4.69due2045Member_59b12826-2bf1-47ee-af56-2e6958151cd3" xlink:href="ed-20221231.xsd#ed_DebentureSeries2015B4.69due2045Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2015B4.69due2045Member_59b12826-2bf1-47ee-af56-2e6958151cd3" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2016A3.85PercentDue2046Member_f7d1bf28-748e-4e05-ac74-738e9cfa91d8" xlink:href="ed-20221231.xsd#ed_Debenture2016A3.85PercentDue2046Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2016A3.85PercentDue2046Member_f7d1bf28-748e-4e05-ac74-738e9cfa91d8" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2016A.3.88Due2046Member_6599a567-7fb9-484c-ae20-ecbad903867f" xlink:href="ed-20221231.xsd#ed_DebentureSeries2016A.3.88Due2046Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2016A.3.88Due2046Member_6599a567-7fb9-484c-ae20-ecbad903867f" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSeventeenAThreePointEightSevenFivePercentDueTwoThousandFortySevenMember_eb9f08ca-7b66-4105-8857-40a76e4e0164" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSeventeenAThreePointEightSevenFivePercentDueTwoThousandFortySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSeventeenAThreePointEightSevenFivePercentDueTwoThousandFortySevenMember_eb9f08ca-7b66-4105-8857-40a76e4e0164" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018E4.650Due2048Member_570eba01-d7c5-425c-a3b7-14c8e0ae1f9b" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018E4.650Due2048Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2018E4.650Due2048Member_570eba01-d7c5-425c-a3b7-14c8e0ae1f9b" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018A4.350Due2048Member_0205835c-b3d0-4f79-8799-2dab6bd0d2ad" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018A4.350Due2048Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2018A4.350Due2048Member_0205835c-b3d0-4f79-8799-2dab6bd0d2ad" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018B4.350Due2048Member_50743ddb-8a7e-4b8b-b877-334792a54ea4" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018B4.350Due2048Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2018B4.350Due2048Member_50743ddb-8a7e-4b8b-b877-334792a54ea4" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019A4.125PercentDue2049Member_a4551a17-4442-4fd8-9819-93455aa6dc70" xlink:href="ed-20221231.xsd#ed_Debenture2019A4.125PercentDue2049Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2019A4.125PercentDue2049Member_a4551a17-4442-4fd8-9819-93455aa6dc70" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019A3.73PercentDue2049Member_53d90c99-705b-42ab-af0b-dc90bf314f7d" xlink:href="ed-20221231.xsd#ed_Debenture2019A3.73PercentDue2049Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2019A3.73PercentDue2049Member_53d90c99-705b-42ab-af0b-dc90bf314f7d" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020B395PercentDue2050Member_730eb6fe-5de5-4b62-841a-e3e1c251dc67" xlink:href="ed-20221231.xsd#ed_Debenture2020B395PercentDue2050Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2020B395PercentDue2050Member_730eb6fe-5de5-4b62-841a-e3e1c251dc67" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020B324PercentDue2050Member_aa0f9a67-f978-4588-86d1-99c1aff189ae" xlink:href="ed-20221231.xsd#ed_Debenture2020B324PercentDue2050Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2020B324PercentDue2050Member_aa0f9a67-f978-4588-86d1-99c1aff189ae" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021B3170PercentDue2051Member_54d557f1-19a9-49fc-8e8e-8e8b7bcc7379" xlink:href="ed-20221231.xsd#ed_Debenture2021B3170PercentDue2051Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2021B3170PercentDue2051Member_54d557f1-19a9-49fc-8e8e-8e8b7bcc7379" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021C320PercentDue2051Member_ee134b9d-8be4-49f4-907e-d6e3e26ed064" xlink:href="ed-20221231.xsd#ed_Debenture2021C320PercentDue2051Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2021C320PercentDue2051Member_ee134b9d-8be4-49f4-907e-d6e3e26ed064" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2022A615PercentDue2052Member_45c595bf-10a8-4b47-b327-db53cf20ab6b" xlink:href="ed-20221231.xsd#ed_Debenture2022A615PercentDue2052Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2022A615PercentDue2052Member_45c595bf-10a8-4b47-b327-db53cf20ab6b" xlink:type="arc" order="46"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2014C4625Due2054Member_2b78147b-34c7-48f0-b842-401a720d4c91" xlink:href="ed-20221231.xsd#ed_Debenture2014C4625Due2054Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2014C4625Due2054Member_2b78147b-34c7-48f0-b842-401a720d4c91" xlink:type="arc" order="47"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2016C4.30Due2056Member_739588e0-3b6e-4382-9bf1-2c63a9122ada" xlink:href="ed-20221231.xsd#ed_DebentureSeries2016C4.30Due2056Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2016C4.30Due2056Member_739588e0-3b6e-4382-9bf1-2c63a9122ada" xlink:type="arc" order="48"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSeventeenCFourPointZeroZeroPercentDueTwoThousandFiftySevenMember_7df9544a-f3bb-4c06-891d-9e4f642a5d97" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSeventeenCFourPointZeroZeroPercentDueTwoThousandFiftySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeriesTwoThousandSeventeenCFourPointZeroZeroPercentDueTwoThousandFiftySevenMember_7df9544a-f3bb-4c06-891d-9e4f642a5d97" xlink:type="arc" order="49"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018B4.500Due2058Member_61ec6917-4943-4f82-b865-41f401143c1a" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018B4.500Due2058Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_DebentureSeries2018B4.500Due2058Member_61ec6917-4943-4f82-b865-41f401143c1a" xlink:type="arc" order="50"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019B3.70PercentDue2059Member_07ebb996-5201-41fc-acae-8bbc0fc0007b" xlink:href="ed-20221231.xsd#ed_Debenture2019B3.70PercentDue2059Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2019B3.70PercentDue2059Member_07ebb996-5201-41fc-acae-8bbc0fc0007b" xlink:type="arc" order="51"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020C300PercentDue2060Member_11da50ff-f892-4262-85b4-4d4ab7280b11" xlink:href="ed-20221231.xsd#ed_Debenture2020C300PercentDue2060Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2020C300PercentDue2060Member_11da50ff-f892-4262-85b4-4d4ab7280b11" xlink:type="arc" order="52"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021B360PercentDue2061Member_c11f54de-dc65-4d69-825c-436a69ebb8cc" xlink:href="ed-20221231.xsd#ed_Debenture2021B360PercentDue2061Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_Debenture2021B360PercentDue2061Member_c11f54de-dc65-4d69-825c-436a69ebb8cc" xlink:type="arc" order="53"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtSeries2010ADue2036Member_5d5b2010-f367-434a-b25a-4d845cc9e542" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtSeries2010ADue2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_TaxExemptDebtSeries2010ADue2036Member_5d5b2010-f367-434a-b25a-4d845cc9e542" xlink:type="arc" order="54"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtSeries2004CDue2039Member_529049ff-be6f-4491-a198-4d3bf054589a" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtSeries2004CDue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_TaxExemptDebtSeries2004CDue2039Member_529049ff-be6f-4491-a198-4d3bf054589a" xlink:type="arc" order="55"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtSeries2005ADue2039Member_300bd183-6a34-4c44-b43e-d7bd5c653e0f" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtSeries2005ADue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0e92f70-d594-408c-bf4d-5ce067d7ff87" xlink:to="loc_ed_TaxExemptDebtSeries2005ADue2039Member_300bd183-6a34-4c44-b43e-d7bd5c653e0f" xlink:type="arc" order="56"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_34f41bd0-133d-457b-90db-bced216a179e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtTable_bf88f0ea-2454-4902-b001-6d9565e3ce33" xlink:to="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_34f41bd0-133d-457b-90db-bced216a179e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_34f41bd0-133d-457b-90db-bced216a179e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_34f41bd0-133d-457b-90db-bced216a179e" xlink:to="loc_us-gaap_ProjectMember_34f41bd0-133d-457b-90db-bced216a179e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_34f41bd0-133d-457b-90db-bced216a179e" xlink:to="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CopperMountainSolar2Member_b08c4f75-5073-4251-80c2-264418c9aa1e" xlink:href="ed-20221231.xsd#ed_CopperMountainSolar2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CopperMountainSolar2Member_b08c4f75-5073-4251-80c2-264418c9aa1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CopperMountainSolar3Member_9973ff49-2cf8-40d4-9c3f-3dcb4f7dcd99" xlink:href="ed-20221231.xsd#ed_CopperMountainSolar3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CopperMountainSolar3Member_9973ff49-2cf8-40d4-9c3f-3dcb4f7dcd99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDSouthwestMember_8438fe7c-0008-4c69-88b0-3a4437c0755e" xlink:href="ed-20221231.xsd#ed_CEDSouthwestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CEDSouthwestMember_8438fe7c-0008-4c69-88b0-3a4437c0755e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WindHoldingsMember_ce9e44e3-a185-445a-9a3f-0ce66219fcd8" xlink:href="ed-20221231.xsd#ed_WindHoldingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_WindHoldingsMember_ce9e44e3-a185-445a-9a3f-0ce66219fcd8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CopperMountainSolar1Member_3d074a44-9ce7-4636-84ca-85984cfea33d" xlink:href="ed-20221231.xsd#ed_CopperMountainSolar1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CopperMountainSolar1Member_3d074a44-9ce7-4636-84ca-85984cfea33d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDCaliforniaTexasMember_adcf57f7-3264-4ab7-aa00-70418c683f51" xlink:href="ed-20221231.xsd#ed_CEDCaliforniaTexasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CEDCaliforniaTexasMember_adcf57f7-3264-4ab7-aa00-70418c683f51" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MesquiteSolar1Member_ed0fa8ea-8654-404a-a9cc-4a0c59efcbe2" xlink:href="ed-20221231.xsd#ed_MesquiteSolar1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_MesquiteSolar1Member_ed0fa8ea-8654-404a-a9cc-4a0c59efcbe2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TexasSolar4Member_1eb2d638-823b-4112-9427-aa2b097d3c88" xlink:href="ed-20221231.xsd#ed_TexasSolar4Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_TexasSolar4Member_1eb2d638-823b-4112-9427-aa2b097d3c88" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CaliforniaSolar2Member_a1c72d84-f260-4ed5-8572-2d2793c61983" xlink:href="ed-20221231.xsd#ed_CaliforniaSolar2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CaliforniaSolar2Member_a1c72d84-f260-4ed5-8572-2d2793c61983" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CaliforniaSolar3Member_ccd1ca60-ca37-4265-963b-edd57e0f4209" xlink:href="ed-20221231.xsd#ed_CaliforniaSolar3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CaliforniaSolar3Member_ccd1ca60-ca37-4265-963b-edd57e0f4209" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CaliforniaSolarMember_3574921c-2982-48d8-a662-0b5dcabd33f2" xlink:href="ed-20221231.xsd#ed_CaliforniaSolarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CaliforniaSolarMember_3574921c-2982-48d8-a662-0b5dcabd33f2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CaliforniaSolar4Member_2c7a2c27-e1a3-43c7-a58d-ebb2459cc5f6" xlink:href="ed-20221231.xsd#ed_CaliforniaSolar4Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CaliforniaSolar4Member_2c7a2c27-e1a3-43c7-a58d-ebb2459cc5f6" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BrokenBowIIMember_bb78ff4a-6747-4ed0-a4c8-649c2e9cbbe4" xlink:href="ed-20221231.xsd#ed_BrokenBowIIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_BrokenBowIIMember_bb78ff4a-6747-4ed0-a4c8-649c2e9cbbe4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TexasSolar5Member_aa1b6f6f-81d6-482b-9d21-385ef65ce3eb" xlink:href="ed-20221231.xsd#ed_TexasSolar5Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_TexasSolar5Member_aa1b6f6f-81d6-482b-9d21-385ef65ce3eb" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TexasSolar7Member_9551ca96-94e5-4a51-bd65-2f9f52319023" xlink:href="ed-20221231.xsd#ed_TexasSolar7Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_TexasSolar7Member_9551ca96-94e5-4a51-bd65-2f9f52319023" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UptonCountrySolarMember_4a84ca34-db35-4aee-beee-f5975d8acc0f" xlink:href="ed-20221231.xsd#ed_UptonCountrySolarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_UptonCountrySolarMember_4a84ca34-db35-4aee-beee-f5975d8acc0f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDNevadaVirginiaMember_1756bb0a-bddd-41c4-aac1-0eb2a296fa43" xlink:href="ed-20221231.xsd#ed_CEDNevadaVirginiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_CEDNevadaVirginiaMember_1756bb0a-bddd-41c4-aac1-0eb2a296fa43" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherProjectMember_765956ac-aed1-4d81-ac62-b3a3f136d57e" xlink:href="ed-20221231.xsd#ed_OtherProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_OtherProjectMember_765956ac-aed1-4d81-ac62-b3a3f136d57e" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AllProjectsMember_ad68e954-e3da-4f38-87cb-31cc948c584d" xlink:href="ed-20221231.xsd#ed_AllProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_58980689-a356-488c-b20c-8b5eca203c7a" xlink:to="loc_ed_AllProjectsMember_ad68e954-e3da-4f38-87cb-31cc948c584d" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_7326efb5-a8b1-4618-ab6f-7c7ae2f6c6a3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLongtermDebtTable_bf88f0ea-2454-4902-b001-6d9565e3ce33" xlink:to="loc_srt_RangeAxis_7326efb5-a8b1-4618-ab6f-7c7ae2f6c6a3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7326efb5-a8b1-4618-ab6f-7c7ae2f6c6a3_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_7326efb5-a8b1-4618-ab6f-7c7ae2f6c6a3" xlink:to="loc_srt_RangeMember_7326efb5-a8b1-4618-ab6f-7c7ae2f6c6a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c5aad846-f1c3-42da-9ad7-3f2707934db5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_7326efb5-a8b1-4618-ab6f-7c7ae2f6c6a3" xlink:to="loc_srt_RangeMember_c5aad846-f1c3-42da-9ad7-3f2707934db5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_c6017cc4-3d7e-4266-ae0d-08a74c78fe92" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c5aad846-f1c3-42da-9ad7-3f2707934db5" xlink:to="loc_srt_MinimumMember_c6017cc4-3d7e-4266-ae0d-08a74c78fe92" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d93f6590-fe71-4a48-adfa-65276b17c57f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c5aad846-f1c3-42da-9ad7-3f2707934db5" xlink:to="loc_srt_MaximumMember_d93f6590-fe71-4a48-adfa-65276b17c57f" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedIncomeStatementCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedIncomeStatementCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedIncomeStatementCECONY" xlink:type="extended" id="iab0bdfc41c334c3f982081031d73e31d_ConsolidatedIncomeStatementCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_79da801e-9770-4146-a9bb-7c2dfebc4b96" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_Revenues_79da801e-9770-4146-a9bb-7c2dfebc4b96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_5f3a77aa-d6bd-4ddf-b257-a9f18be842a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_5f3a77aa-d6bd-4ddf-b257-a9f18be842a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_e4bc4469-8246-448f-be66-88cdeeb3c95c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_DepreciationAndAmortization_e4bc4469-8246-448f-be66-88cdeeb3c95c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_fe1f5102-6f48-44f0-bc78-49c4faa3feeb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxesExcludingIncomeAndExciseTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_fe1f5102-6f48-44f0-bc78-49c4faa3feeb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_45f0c56e-1541-414f-8f8d-1d265acf7ccc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_OperatingExpenses_45f0c56e-1541-414f-8f8d-1d265acf7ccc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_652e124d-8866-4910-858c-2f89b0d29734" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_OperatingIncomeLoss_652e124d-8866-4910-858c-2f89b0d29734" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNet_9f5b8474-027d-4ac8-a1b6-08cb9434aa4e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_InvestmentIncomeNet_9f5b8474-027d-4ac8-a1b6-08cb9434aa4e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_6b0c0ec2-8d85-49f7-bf45-26202ad50d85" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity_6b0c0ec2-8d85-49f7-bf45-26202ad50d85" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingExpense_d27be4c9-b45a-4979-afa9-f0e939d85118" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_OtherNonoperatingExpense_d27be4c9-b45a-4979-afa9-f0e939d85118" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_289c04d9-f67b-4dad-aa6e-4500806c11a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_289c04d9-f67b-4dad-aa6e-4500806c11a6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncomeBeforeInterestIncomeInterestExpenseAndIncomeTaxes_e7879fdc-9132-43f1-94da-63bb74b761e4" xlink:href="ed-20221231.xsd#ed_IncomeBeforeInterestIncomeInterestExpenseAndIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_ed_IncomeBeforeInterestIncomeInterestExpenseAndIncomeTaxes_e7879fdc-9132-43f1-94da-63bb74b761e4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_6397c9a5-4234-4886-8b51-9050196e16d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_InterestExpenseDebt_6397c9a5-4234-4886-8b51-9050196e16d6" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_InterestExpenseIncomeOtherNet_d63f1bb0-1e35-4510-b67b-2ec16d4a40da" xlink:href="ed-20221231.xsd#ed_InterestExpenseIncomeOtherNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_ed_InterestExpenseIncomeOtherNet_d63f1bb0-1e35-4510-b67b-2ec16d4a40da" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions_df638c6a-e508-40c1-9a33-1edcd798b1e1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions_df638c6a-e508-40c1-9a33-1edcd798b1e1" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_dc72fb27-2071-4e58-a066-17815dbbf88b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_InterestExpense_dc72fb27-2071-4e58-a066-17815dbbf88b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f158844d-8e78-4905-a581-0b6d73484bd9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f158844d-8e78-4905-a581-0b6d73484bd9" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_e6a0adfe-de1d-4ac7-9ad4-6e0fd9e1e47a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_e6a0adfe-de1d-4ac7-9ad4-6e0fd9e1e47a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_09857e89-7e06-46df-be08-06f60d30e1d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_NetIncomeLoss_09857e89-7e06-46df-be08-06f60d30e1d3" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_a5b0fd84-1d42-4baa-863c-7df1f702d6c9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_9e02bc65-19db-4f00-8473-d8493677dd71" xlink:to="loc_us-gaap_StatementTable_a5b0fd84-1d42-4baa-863c-7df1f702d6c9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_979f69a0-3c5a-41c0-98fa-c7086b9772f6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_a5b0fd84-1d42-4baa-863c-7df1f702d6c9" xlink:to="loc_srt_ProductOrServiceAxis_979f69a0-3c5a-41c0-98fa-c7086b9772f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_979f69a0-3c5a-41c0-98fa-c7086b9772f6_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_979f69a0-3c5a-41c0-98fa-c7086b9772f6" xlink:to="loc_srt_ProductsAndServicesDomain_979f69a0-3c5a-41c0-98fa-c7086b9772f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_979f69a0-3c5a-41c0-98fa-c7086b9772f6" xlink:to="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricityMember_2161c85a-c61e-4e30-8599-1f6be18ce1d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_us-gaap_ElectricityMember_2161c85a-c61e-4e30-8599-1f6be18ce1d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPurchasedMember_f2b1be3c-75b0-4c1d-872f-e9f34729553d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OilAndGasPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_us-gaap_OilAndGasPurchasedMember_f2b1be3c-75b0-4c1d-872f-e9f34729553d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SteamMember_dd442c67-3466-480b-bdb5-17d1ca926d87" xlink:href="ed-20221231.xsd#ed_SteamMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_ed_SteamMember_dd442c67-3466-480b-bdb5-17d1ca926d87" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricityPurchasedMember_b898fd23-1096-4db6-a469-a9d9074fb0f9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricityPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_us-gaap_ElectricityPurchasedMember_b898fd23-1096-4db6-a469-a9d9074fb0f9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FuelMember_736fd53a-36db-433d-ab7f-d7a9ff4a590b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_FuelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_srt_FuelMember_736fd53a-36db-433d-ab7f-d7a9ff4a590b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasOperationAndMaintenanceMember_32fe296f-ace8-4256-9df6-c8cd16e0d5b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OilAndGasOperationAndMaintenanceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_us-gaap_OilAndGasOperationAndMaintenanceMember_32fe296f-ace8-4256-9df6-c8cd16e0d5b8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonUtilityProductsAndServicesMember_42c63d14-04c7-4f93-8a2e-84abb13b6a95" xlink:href="ed-20221231.xsd#ed_NonUtilityProductsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_29df91ab-b13a-46ca-bedd-80d4d941d895" xlink:to="loc_ed_NonUtilityProductsAndServicesMember_42c63d14-04c7-4f93-8a2e-84abb13b6a95" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ca60e525-caa5-4968-a3d1-8cb02b49caf4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_a5b0fd84-1d42-4baa-863c-7df1f702d6c9" xlink:to="loc_dei_LegalEntityAxis_ca60e525-caa5-4968-a3d1-8cb02b49caf4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ca60e525-caa5-4968-a3d1-8cb02b49caf4_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ca60e525-caa5-4968-a3d1-8cb02b49caf4" xlink:to="loc_dei_EntityDomain_ca60e525-caa5-4968-a3d1-8cb02b49caf4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ab957704-a71e-4fe4-b474-5ab79d19f159" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ca60e525-caa5-4968-a3d1-8cb02b49caf4" xlink:to="loc_dei_EntityDomain_ab957704-a71e-4fe4-b474-5ab79d19f159" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_36b4c9be-4360-4588-8546-722b17a0a27a" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ab957704-a71e-4fe4-b474-5ab79d19f159" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_36b4c9be-4360-4588-8546-722b17a0a27a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofComprehensiveIncomeCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofComprehensiveIncomeCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofComprehensiveIncomeCECONY" xlink:type="extended" id="i63ffe0827586470d8d2d8c4e315b0cb9_ConsolidatedStatementofComprehensiveIncomeCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_cae64325-6ea4-41b3-8e89-7e9c49cd4383" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:to="loc_us-gaap_NetIncomeLoss_cae64325-6ea4-41b3-8e89-7e9c49cd4383" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_c7a1d447-8620-4490-8a53-68876d85dbce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_c7a1d447-8620-4490-8a53-68876d85dbce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherComprehensiveIncomeLossOtherIncomeAfterTax_94c72a7c-5f27-4f7e-827a-2dd820c8887c" xlink:href="ed-20221231.xsd#ed_OtherComprehensiveIncomeLossOtherIncomeAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:to="loc_ed_OtherComprehensiveIncomeLossOtherIncomeAfterTax_94c72a7c-5f27-4f7e-827a-2dd820c8887c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_54f3ce52-f1b9-4f4b-898b-3521489a2f7d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_54f3ce52-f1b9-4f4b-898b-3521489a2f7d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_88477403-b6f0-40c4-8158-70b2a49e198d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_88477403-b6f0-40c4-8158-70b2a49e198d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_106762da-e784-4f65-a322-cf46dfba586d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_091bdf6d-6363-4706-b8c8-c84448159c55" xlink:to="loc_us-gaap_StatementTable_106762da-e784-4f65-a322-cf46dfba586d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_70ea8f78-cfd1-45b3-a093-6be3d68fbbdd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_106762da-e784-4f65-a322-cf46dfba586d" xlink:to="loc_dei_LegalEntityAxis_70ea8f78-cfd1-45b3-a093-6be3d68fbbdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_70ea8f78-cfd1-45b3-a093-6be3d68fbbdd_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_70ea8f78-cfd1-45b3-a093-6be3d68fbbdd" xlink:to="loc_dei_EntityDomain_70ea8f78-cfd1-45b3-a093-6be3d68fbbdd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_60f7ef9c-f86c-4221-b87d-f87198ac8d36" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_70ea8f78-cfd1-45b3-a093-6be3d68fbbdd" xlink:to="loc_dei_EntityDomain_60f7ef9c-f86c-4221-b87d-f87198ac8d36" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_550cfb8a-327c-4bc3-a181-cbd4930d02e0" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_60f7ef9c-f86c-4221-b87d-f87198ac8d36" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_550cfb8a-327c-4bc3-a181-cbd4930d02e0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofCashFlowsCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofCashFlowsCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofCashFlowsCECONY" xlink:type="extended" id="ibb7f6cd8d5e04a87b95055c4624bc78b_ConsolidatedStatementofCashFlowsCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_ef2a6f7c-75a2-4a40-9cf5-2dc5e5b9efcb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_ef2a6f7c-75a2-4a40-9cf5-2dc5e5b9efcb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_79eeafcc-38c5-46c4-ae0a-097dd070fb92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_ef2a6f7c-75a2-4a40-9cf5-2dc5e5b9efcb" xlink:to="loc_us-gaap_NetIncomeLoss_79eeafcc-38c5-46c4-ae0a-097dd070fb92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_fc0192a4-e7de-45de-b286-cecef8675e28" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_ef2a6f7c-75a2-4a40-9cf5-2dc5e5b9efcb" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_fc0192a4-e7de-45de-b286-cecef8675e28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_cd38e907-667b-4598-8db9-d3a751f6bfd2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_fc0192a4-e7de-45de-b286-cecef8675e28" xlink:to="loc_us-gaap_DepreciationAndAmortization_cd38e907-667b-4598-8db9-d3a751f6bfd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_aeb26521-7154-4e97-a9af-79652147c865" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_fc0192a4-e7de-45de-b286-cecef8675e28" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_aeb26521-7154-4e97-a9af-79652147c865" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_d6ccafee-289b-4256-8f57-b14693729a9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_fc0192a4-e7de-45de-b286-cecef8675e28" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_d6ccafee-289b-4256-8f57-b14693729a9f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_fc0192a4-e7de-45de-b286-cecef8675e28" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_244cb5ee-1220-43c1-bc0e-5335a20cc71f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_244cb5ee-1220-43c1-bc0e-5335a20cc71f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_72840573-f46f-4bda-9751-d4a679d3701c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_72840573-f46f-4bda-9751-d4a679d3701c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherReceivables_29303477-1e79-44a6-a213-b67f04508c15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherReceivables_29303477-1e79-44a6-a213-b67f04508c15" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_614942f9-ff98-4bf1-b7f9-37edbec04f34" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_614942f9-ff98-4bf1-b7f9-37edbec04f34" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_81f640ef-eb4e-4031-97d1-453d8e7e3a7d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_81f640ef-eb4e-4031-97d1-453d8e7e3a7d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueToAffiliates_a7a7e2ff-4c7a-4cd4-b9eb-89559e865d44" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDueToAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInDueToAffiliates_a7a7e2ff-4c7a-4cd4-b9eb-89559e865d44" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_ec177764-a694-4327-a7d4-c50c914b146f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_ec177764-a694-4327-a7d4-c50c914b146f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_16593bf4-75e8-419a-8c4c-79d687b707e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionAndOtherPostretirementBenefitContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_16593bf4-75e8-419a-8c4c-79d687b707e2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable_152fcf4d-4aa3-47f2-bc66-eb0a70adafb4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable_152fcf4d-4aa3-47f2-bc66-eb0a70adafb4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncreaseDecreaseInCurrentPortionOfIntercompanyTaxPayable_ffb6de32-972b-4cb0-9280-c7540fbc9a66" xlink:href="ed-20221231.xsd#ed_IncreaseDecreaseInCurrentPortionOfIntercompanyTaxPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_ed_IncreaseDecreaseInCurrentPortionOfIntercompanyTaxPayable_ffb6de32-972b-4cb0-9280-c7540fbc9a66" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncreaseDecreaseinSystemBenefitChargeLiability_cbdf16cb-cacb-471e-9ddb-08d857ec4b26" xlink:href="ed-20221231.xsd#ed_IncreaseDecreaseinSystemBenefitChargeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_ed_IncreaseDecreaseinSystemBenefitChargeLiability_cbdf16cb-cacb-471e-9ddb-08d857ec4b26" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredCharges_f917e91d-3836-4442-bebe-a2663459b1f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDeferredCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredCharges_f917e91d-3836-4442-bebe-a2663459b1f0" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredLiabilities_f284581a-36a1-4f1d-a147-a12087c0d740" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDeferredLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredLiabilities_f284581a-36a1-4f1d-a147-a12087c0d740" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_d0294ab4-73bf-47ab-b40b-d73c4c6b8ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_49d52aa7-476f-41e1-be77-ddfb0be8b318" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_d0294ab4-73bf-47ab-b40b-d73c4c6b8ce5" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_dba6bdad-2707-4779-a097-b225ca18297a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_ef2a6f7c-75a2-4a40-9cf5-2dc5e5b9efcb" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_dba6bdad-2707-4779-a097-b225ca18297a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_50d6f630-f9b8-4b8d-a81e-884e74fa4eb7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_50d6f630-f9b8-4b8d-a81e-884e74fa4eb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForConstructionInProcess_6e5a1c97-e179-40ae-96e8-c06dd7be1624" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForConstructionInProcess"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_50d6f630-f9b8-4b8d-a81e-884e74fa4eb7" xlink:to="loc_us-gaap_PaymentsForConstructionInProcess_6e5a1c97-e179-40ae-96e8-c06dd7be1624" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromRemovalCosts_9b74588e-f45c-45bb-83a3-7a77ab9098da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForProceedsFromRemovalCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_50d6f630-f9b8-4b8d-a81e-884e74fa4eb7" xlink:to="loc_us-gaap_PaymentsForProceedsFromRemovalCosts_9b74588e-f45c-45bb-83a3-7a77ab9098da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a3ccc82a-b8df-41a4-abd2-2109f718226d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_50d6f630-f9b8-4b8d-a81e-884e74fa4eb7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a3ccc82a-b8df-41a4-abd2-2109f718226d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_2b45e6bb-e31b-42dd-84a3-5926b5fcbe77" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_2b45e6bb-e31b-42dd-84a3-5926b5fcbe77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_d55e8367-1b29-497c-8f9d-43b6b583d018" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_d55e8367-1b29-497c-8f9d-43b6b583d018" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_4c77192f-ab2b-4479-8ff1-3c3e74b1f525" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_4c77192f-ab2b-4479-8ff1-3c3e74b1f525" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_f80107e5-0d74-4931-9d75-55d8c8e1822c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_f80107e5-0d74-4931-9d75-55d8c8e1822c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromContributionsFromParent_ac269b04-1b2c-425a-a75b-a71c882b03dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromContributionsFromParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_ProceedsFromContributionsFromParent_ac269b04-1b2c-425a-a75b-a71c882b03dd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfOrdinaryDividends_e21e4f11-4abd-4a95-aa6a-39f7c6b9fe18" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfOrdinaryDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_PaymentsOfOrdinaryDividends_e21e4f11-4abd-4a95-aa6a-39f7c6b9fe18" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_93a346d1-dba2-4494-900f-e03896645a78" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_eed5808e-e436-45bd-a976-634c8439e12d" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_93a346d1-dba2-4494-900f-e03896645a78" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_6a83220e-8fe8-44a4-bc30-876272bbd1e8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_6a83220e-8fe8-44a4-bc30-876272bbd1e8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_27039c5a-f115-43c2-b2fb-c61bface3812" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_6a83220e-8fe8-44a4-bc30-876272bbd1e8" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_27039c5a-f115-43c2-b2fb-c61bface3812" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1406bcaa-43d4-4d9e-9857-cca7fe51c179" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract_6a83220e-8fe8-44a4-bc30-876272bbd1e8" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1406bcaa-43d4-4d9e-9857-cca7fe51c179" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_61b1ecd4-25cd-4cea-a816-cb5ab9aa608a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_576584b3-4aeb-45e1-9dce-f62f15cae3f9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_576584b3-4aeb-45e1-9dce-f62f15cae3f9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_a11c9983-433a-4973-8dd2-86b5513d4283" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdditionalCashFlowElementsAndSupplementalCashFlowInformationAbstract_576584b3-4aeb-45e1-9dce-f62f15cae3f9" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_a11c9983-433a-4973-8dd2-86b5513d4283" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_9f742147-e8ca-4c81-aa7c-deb3d6b5d7a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_a11c9983-433a-4973-8dd2-86b5513d4283" xlink:to="loc_us-gaap_InterestPaidNet_9f742147-e8ca-4c81-aa7c-deb3d6b5d7a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_bb664dfd-d8c9-4ef1-86c0-1e83e093033a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_a11c9983-433a-4973-8dd2-86b5513d4283" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_bb664dfd-d8c9-4ef1-86c0-1e83e093033a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_43cc2b77-10dc-4ba3-af60-887c25871309" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_43cc2b77-10dc-4ba3-af60-887c25871309" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_b54bf299-4836-4399-8cbc-04d8d25280f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_43cc2b77-10dc-4ba3-af60-887c25871309" xlink:to="loc_us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_b54bf299-4836-4399-8cbc-04d8d25280f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_867f3fdd-3f47-4fe5-bc3a-b08f7924427a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_43cc2b77-10dc-4ba3-af60-887c25871309" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_867f3fdd-3f47-4fe5-bc3a-b08f7924427a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_9d5d4e24-cf0a-4317-a90b-7b4580108eca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_beb21658-f7fb-4988-bfa5-618828f62eac" xlink:to="loc_us-gaap_StatementTable_9d5d4e24-cf0a-4317-a90b-7b4580108eca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_817af093-6d9e-4e29-89b9-7a55c699f79f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_9d5d4e24-cf0a-4317-a90b-7b4580108eca" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_817af093-6d9e-4e29-89b9-7a55c699f79f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_817af093-6d9e-4e29-89b9-7a55c699f79f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_817af093-6d9e-4e29-89b9-7a55c699f79f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_817af093-6d9e-4e29-89b9-7a55c699f79f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20acaf27-3d56-440c-bd35-fead73991802" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_817af093-6d9e-4e29-89b9-7a55c699f79f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20acaf27-3d56-440c-bd35-fead73991802" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SoftwareLicensesMember_c3f228cc-ad09-4cb3-87e2-f7ca8cef7779" xlink:href="ed-20221231.xsd#ed_SoftwareLicensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20acaf27-3d56-440c-bd35-fead73991802" xlink:to="loc_ed_SoftwareLicensesMember_c3f228cc-ad09-4cb3-87e2-f7ca8cef7779" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_301dc569-5081-4720-a94d-7ad6f9e9f57c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20acaf27-3d56-440c-bd35-fead73991802" xlink:to="loc_us-gaap_EquipmentMember_301dc569-5081-4720-a94d-7ad6f9e9f57c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3d6a73c9-25f7-4f0a-9376-811ab5fe00bc" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_9d5d4e24-cf0a-4317-a90b-7b4580108eca" xlink:to="loc_dei_LegalEntityAxis_3d6a73c9-25f7-4f0a-9376-811ab5fe00bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3d6a73c9-25f7-4f0a-9376-811ab5fe00bc_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3d6a73c9-25f7-4f0a-9376-811ab5fe00bc" xlink:to="loc_dei_EntityDomain_3d6a73c9-25f7-4f0a-9376-811ab5fe00bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d873f1a4-9d03-4019-a5f2-ca0ac0218894" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3d6a73c9-25f7-4f0a-9376-811ab5fe00bc" xlink:to="loc_dei_EntityDomain_d873f1a4-9d03-4019-a5f2-ca0ac0218894" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c65cff35-5d04-4be8-9a04-449a23552835" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d873f1a4-9d03-4019-a5f2-ca0ac0218894" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c65cff35-5d04-4be8-9a04-449a23552835" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedBalanceSheetCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedBalanceSheetCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedBalanceSheetCECONY" xlink:type="extended" id="i6752562479ad49908bc7945c0c81ddaf_ConsolidatedBalanceSheetCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_71cfe564-8ab6-4069-aa7e-3dd392c20ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_71cfe564-8ab6-4069-aa7e-3dd392c20ce6" xlink:to="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:to="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6c3bd8bb-ea3d-4334-8bce-a33da2cf3360" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6c3bd8bb-ea3d-4334-8bce-a33da2cf3360" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_afea8d87-e32a-4249-82e6-0e17c83f0189" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_afea8d87-e32a-4249-82e6-0e17c83f0189" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivables_d927c430-3cca-4d16-a0e2-19750b14255e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_OtherReceivables_d927c430-3cca-4d16-a0e2-19750b14255e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_bcacb98b-3bec-4d82-bb2d-5260947dadca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_IncomeTaxesReceivable_bcacb98b-3bec-4d82-bb2d-5260947dadca" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_69512559-187e-4b48-8f38-15287d3902a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_69512559-187e-4b48-8f38-15287d3902a4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueFromAffiliateCurrent_9886f87d-16af-4719-903e-0a8786a4f205" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueFromAffiliateCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_DueFromAffiliateCurrent_9886f87d-16af-4719-903e-0a8786a4f205" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost_28cbb4a9-35f3-4298-92b8-0e8e31320519" xlink:href="ed-20221231.xsd#ed_EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_ed_EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost_28cbb4a9-35f3-4298-92b8-0e8e31320519" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_910c9d77-0be2-41e0-a90b-23ef553e4c62" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_910c9d77-0be2-41e0-a90b-23ef553e4c62" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_7070439c-6795-477d-918c-e7efe4f44df3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_7070439c-6795-477d-918c-e7efe4f44df3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueDecouplingMechanismReceivable_f75aa790-2499-428f-9ad3-15e883b8d19e" xlink:href="ed-20221231.xsd#ed_RevenueDecouplingMechanismReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_ed_RevenueDecouplingMechanismReceivable_f75aa790-2499-428f-9ad3-15e883b8d19e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_0d2f6e26-ec4e-4c1b-bb20-ddc361220874" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_0d2f6e26-ec4e-4c1b-bb20-ddc361220874" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_d9ec37f4-0195-4842-8629-40b5638707a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_OtherAssetsCurrent_d9ec37f4-0195-4842-8629-40b5638707a4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_59f1b963-f94e-49af-b981-c0e30436ab79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a51164b5-8694-43fc-a019-58d5b081e86e" xlink:to="loc_us-gaap_AssetsCurrent_59f1b963-f94e-49af-b981-c0e30436ab79" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_d52d650c-7769-4267-9172-7d0855c3a19f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:to="loc_us-gaap_LongTermInvestments_d52d650c-7769-4267-9172-7d0855c3a19f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_06b49336-c077-4842-b07f-fe85de125b75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution_06b49336-c077-4842-b07f-fe85de125b75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_37039c45-8366-4d59-96b8-b7379dfbc6b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_37039c45-8366-4d59-96b8-b7379dfbc6b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_05c1749a-455f-4f2f-9e71-47abf1588a49" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService_05c1749a-455f-4f2f-9e71-47abf1588a49" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_a6cefb94-c042-489a-b4cf-93df2f83153e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation_a6cefb94-c042-489a-b4cf-93df2f83153e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NetUtilityPlant_19383aaa-4200-4a00-b672-28917212129a" xlink:href="ed-20221231.xsd#ed_NetUtilityPlant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_ed_NetUtilityPlant_19383aaa-4200-4a00-b672-28917212129a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_86382358-cb55-4914-9f65-400c62a5b8c6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_86382358-cb55-4914-9f65-400c62a5b8c6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_eb1e23e2-cdd3-4b33-9d33-0f3db6378662" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract_b54f5702-bc27-4378-b1b9-5ac633e8bf1c" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_eb1e23e2-cdd3-4b33-9d33-0f3db6378662" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_ed03da0d-c50d-4217-91e1-572de8930aff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_ed03da0d-c50d-4217-91e1-572de8930aff" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonUtilityPropertyNet_0fdab332-c22b-4dbf-aafa-b9e231cd927b" xlink:href="ed-20221231.xsd#ed_NonUtilityPropertyNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_ed03da0d-c50d-4217-91e1-572de8930aff" xlink:to="loc_ed_NonUtilityPropertyNet_0fdab332-c22b-4dbf-aafa-b9e231cd927b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_7023fa05-7561-4c6c-a5cc-1a873e59a76e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_ed03da0d-c50d-4217-91e1-572de8930aff" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_7023fa05-7561-4c6c-a5cc-1a873e59a76e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:to="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_f7d2f4ed-921b-49d9-a8b4-61024d1b44f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_f7d2f4ed-921b-49d9-a8b4-61024d1b44f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_1c97b100-432d-46ec-a543-7ae858fa6bbf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_1c97b100-432d-46ec-a543-7ae858fa6bbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4d87a78e-9267-494d-bed0-b09ccf40550c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4d87a78e-9267-494d-bed0-b09ccf40550c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_a8f6833b-dbad-4790-b59e-841425449095" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_a8f6833b-dbad-4790-b59e-841425449095" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_68afa497-aedf-4309-8ba9-4079ecb30747" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_68afa497-aedf-4309-8ba9-4079ecb30747" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_c613928a-6e45-4bb3-8473-89e82c173ab9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_65f0e902-81b1-4f3b-94bc-28b6db6c71bf" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_c613928a-6e45-4bb3-8473-89e82c173ab9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_d239df6b-f89e-4764-8888-66e7479fc070" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_b4de0e84-4e0f-4d4a-813d-209e4da453d4" xlink:to="loc_us-gaap_Assets_d239df6b-f89e-4764-8888-66e7479fc070" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_71cfe564-8ab6-4069-aa7e-3dd392c20ce6" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableCurrent_0e6c3ba6-435a-46b5-bbc5-042f2d73e3b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_NotesPayableCurrent_0e6c3ba6-435a-46b5-bbc5-042f2d73e3b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_c85b7927-2047-4541-95b2-c0a0b8f4a267" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_AccountsPayableCurrent_c85b7927-2047-4541-95b2-c0a0b8f4a267" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueToAffiliateCurrent_d9f59697-317b-4853-a7ab-01a3cf87c8d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueToAffiliateCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_DueToAffiliateCurrent_d9f59697-317b-4853-a7ab-01a3cf87c8d7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerRefundLiabilityCurrent_84d399ae-c634-4b39-9399-b89608cdecab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerRefundLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_ContractWithCustomerRefundLiabilityCurrent_84d399ae-c634-4b39-9399-b89608cdecab" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrent_b52716a9-9eaf-44b9-b0f2-43efecf8bad4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_TaxesPayableCurrent_b52716a9-9eaf-44b9-b0f2-43efecf8bad4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxesPayableRelatedPartiesCurrent_7ed5a13b-ac75-423a-a660-e9684be45340" xlink:href="ed-20221231.xsd#ed_TaxesPayableRelatedPartiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_ed_TaxesPayableRelatedPartiesCurrent_7ed5a13b-ac75-423a-a660-e9684be45340" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_8019edb1-5952-4a13-8be4-a41f6ae1d584" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_InterestPayableCurrent_8019edb1-5952-4a13-8be4-a41f6ae1d584" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_26357120-1d74-4a9a-8222-685a21cbeee7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_26357120-1d74-4a9a-8222-685a21cbeee7" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_c21b1354-62f9-4951-9861-f12a678e469f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_c21b1354-62f9-4951-9861-f12a678e469f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_e46f0a67-630d-4c0c-a4df-3fce350824ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_e46f0a67-630d-4c0c-a4df-3fce350824ec" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SystemBenefitsChargeLiabilityCurrent_8981edd2-be54-4a9c-92f3-e810d5765dfc" xlink:href="ed-20221231.xsd#ed_SystemBenefitsChargeLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_ed_SystemBenefitsChargeLiabilityCurrent_8981edd2-be54-4a9c-92f3-e810d5765dfc" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_d403b0c4-b12e-49c9-abc0-8ad04714ba7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_d403b0c4-b12e-49c9-abc0-8ad04714ba7b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_a48e39b0-cf42-437d-8db8-abb21584ec9e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_a48e39b0-cf42-437d-8db8-abb21584ec9e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_cb237b63-081e-4882-8852-57446f4c21de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0d35adba-e2f7-4fdc-aed1-e5b8fda07551" xlink:to="loc_us-gaap_LiabilitiesCurrent_cb237b63-081e-4882-8852-57446f4c21de" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProvisionForInjuriesAndDamages_885ab27c-1957-4284-a392-66446e515bf9" xlink:href="ed-20221231.xsd#ed_ProvisionForInjuriesAndDamages"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_ed_ProvisionForInjuriesAndDamages_885ab27c-1957-4284-a392-66446e515bf9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_ea7e0c70-9e11-470e-93ac-a409c2abfad1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_ea7e0c70-9e11-470e-93ac-a409c2abfad1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_a05d5e48-de3d-426e-8743-38fb562dc170" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_a05d5e48-de3d-426e-8743-38fb562dc170" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_8d66d2ad-c40d-41ac-b189-df52549b70d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_8d66d2ad-c40d-41ac-b189-df52549b70d3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_951dcecd-a78d-4dc6-9870-b85b275af289" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_951dcecd-a78d-4dc6-9870-b85b275af289" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit_6d1ffcf4-d533-4275-be98-3d2490e890e9" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_ed_DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit_6d1ffcf4-d533-4275-be98-3d2490e890e9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_60af04b5-6533-4716-a328-75048b2fed65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_60af04b5-6533-4716-a328-75048b2fed65" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_27a541bd-ec46-4160-83af-adfdb25334cb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_27a541bd-ec46-4160-83af-adfdb25334cb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent_61339448-91cd-4b06-a456-2a4acdc37918" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_DeferredCreditsAndOtherLiabilitiesNoncurrent_61339448-91cd-4b06-a456-2a4acdc37918" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_c66a4a19-2d2e-4e1f-932f-532b33fd421f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_df243b7d-4df2-43d3-a6e5-ee239088d409" xlink:to="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent_c66a4a19-2d2e-4e1f-932f-532b33fd421f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_f004aade-11b0-48b2-af6c-b0bd57a8fcda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_f004aade-11b0-48b2-af6c-b0bd57a8fcda" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_f3a42d2d-2538-461e-bc13-561c6e889a1b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:to="loc_us-gaap_CommitmentsAndContingencies_f3a42d2d-2538-461e-bc13-561c6e889a1b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_64f11564-7d54-4f45-b15b-790d324d3665" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_64f11564-7d54-4f45-b15b-790d324d3665" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_9e658ed2-bad4-4602-b1b0-9dcba76db393" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_64f11564-7d54-4f45-b15b-790d324d3665" xlink:to="loc_us-gaap_StockholdersEquity_9e658ed2-bad4-4602-b1b0-9dcba76db393" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_2145f2e6-52ed-4cdc-8340-dabd2a353017" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1eb6de8b-532e-4022-a6bf-ebb598629d55" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_2145f2e6-52ed-4cdc-8340-dabd2a353017" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_2e75b150-bd3a-4a79-9b2c-1c01698f99a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_71cfe564-8ab6-4069-aa7e-3dd392c20ce6" xlink:to="loc_us-gaap_StatementTable_2e75b150-bd3a-4a79-9b2c-1c01698f99a5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1149c908-7d40-4923-8d76-af2a3d27d6fb" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_2e75b150-bd3a-4a79-9b2c-1c01698f99a5" xlink:to="loc_dei_LegalEntityAxis_1149c908-7d40-4923-8d76-af2a3d27d6fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1149c908-7d40-4923-8d76-af2a3d27d6fb_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1149c908-7d40-4923-8d76-af2a3d27d6fb" xlink:to="loc_dei_EntityDomain_1149c908-7d40-4923-8d76-af2a3d27d6fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1698fa3a-ab4a-439b-bd3d-febfced59603" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1149c908-7d40-4923-8d76-af2a3d27d6fb" xlink:to="loc_dei_EntityDomain_1698fa3a-ab4a-439b-bd3d-febfced59603" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7c851afc-732d-4161-805b-24bec667a594" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1698fa3a-ab4a-439b-bd3d-febfced59603" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7c851afc-732d-4161-805b-24bec667a594" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_021087c8-3c4b-4c81-a254-8ee8cf644efc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_2e75b150-bd3a-4a79-9b2c-1c01698f99a5" xlink:to="loc_us-gaap_PublicUtilityAxis_021087c8-3c4b-4c81-a254-8ee8cf644efc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_021087c8-3c4b-4c81-a254-8ee8cf644efc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_021087c8-3c4b-4c81-a254-8ee8cf644efc" xlink:to="loc_us-gaap_UtilityPlantDomain_021087c8-3c4b-4c81-a254-8ee8cf644efc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_5dcd342d-191d-4b79-ada7-709c3b85b931" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_021087c8-3c4b-4c81-a254-8ee8cf644efc" xlink:to="loc_us-gaap_UtilityPlantDomain_5dcd342d-191d-4b79-ada7-709c3b85b931" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_3d56462d-61e8-4c13-b7f3-a07ff50425fb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5dcd342d-191d-4b79-ada7-709c3b85b931" xlink:to="loc_us-gaap_ElectricTransmissionMember_3d56462d-61e8-4c13-b7f3-a07ff50425fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_5f330710-a887-4c7d-9926-9a3b5ea4ccd3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5dcd342d-191d-4b79-ada7-709c3b85b931" xlink:to="loc_us-gaap_GasTransmissionMember_5f330710-a887-4c7d-9926-9a3b5ea4ccd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_705e2c7c-0f29-4cc6-a049-e47cfc4a6312" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5dcd342d-191d-4b79-ada7-709c3b85b931" xlink:to="loc_us-gaap_SteamPlantMember_705e2c7c-0f29-4cc6-a049-e47cfc4a6312" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedBalanceSheetCECONYParenthetical" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedBalanceSheetCECONYParenthetical"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedBalanceSheetCECONYParenthetical" xlink:type="extended" id="i0b31c99a22cc4052964392acf023480d_ConsolidatedBalanceSheetCECONYParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_8268cdcc-aa5f-4d93-9dd9-299422aa6f79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_f4339395-892e-4ece-a3f2-0adff72e3e32" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_8268cdcc-aa5f-4d93-9dd9-299422aa6f79" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_f4339395-892e-4ece-a3f2-0adff72e3e32" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulOtherReceivablesCurrent_0aefa125-9f60-4bd8-b404-0841091e4ee3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulOtherReceivablesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_8268cdcc-aa5f-4d93-9dd9-299422aa6f79" xlink:to="loc_us-gaap_AllowanceForDoubtfulOtherReceivablesCurrent_0aefa125-9f60-4bd8-b404-0841091e4ee3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_d22820ca-694a-4483-9312-c70f279e03e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_8268cdcc-aa5f-4d93-9dd9-299422aa6f79" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_d22820ca-694a-4483-9312-c70f279e03e7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_150bf731-0683-42e7-9fdb-cecd7e54db87" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_8268cdcc-aa5f-4d93-9dd9-299422aa6f79" xlink:to="loc_us-gaap_StatementTable_150bf731-0683-42e7-9fdb-cecd7e54db87" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d2ed67a8-070b-4d55-bb46-924cf8a0e168" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_150bf731-0683-42e7-9fdb-cecd7e54db87" xlink:to="loc_dei_LegalEntityAxis_d2ed67a8-070b-4d55-bb46-924cf8a0e168" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d2ed67a8-070b-4d55-bb46-924cf8a0e168_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d2ed67a8-070b-4d55-bb46-924cf8a0e168" xlink:to="loc_dei_EntityDomain_d2ed67a8-070b-4d55-bb46-924cf8a0e168_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a46e21c1-c4a0-48d9-a240-1db83a190c43" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d2ed67a8-070b-4d55-bb46-924cf8a0e168" xlink:to="loc_dei_EntityDomain_a46e21c1-c4a0-48d9-a240-1db83a190c43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_eb4c4543-0a2a-4adb-8b66-ac7118274306" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a46e21c1-c4a0-48d9-a240-1db83a190c43" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_eb4c4543-0a2a-4adb-8b66-ac7118274306" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofShareholdersEquityCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofShareholdersEquityCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofShareholdersEquityCECONY" xlink:type="extended" id="i02915392818f46d08d04f2b26a1d5c63_ConsolidatedStatementofShareholdersEquityCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_a1e7da22-8c21-482f-bcf4-8887d7844b32" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a1e7da22-8c21-482f-bcf4-8887d7844b32" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_7614a7a0-bfc3-49aa-b721-8c58f7c5d338" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_7614a7a0-bfc3-49aa-b721-8c58f7c5d338" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_0a11e0d8-e715-46fc-b58a-592ad942b150" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:to="loc_us-gaap_StockholdersEquity_0a11e0d8-e715-46fc-b58a-592ad942b150" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_ca4c7ba9-a3e3-4e21-8deb-6b578dc90c90" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:to="loc_us-gaap_NetIncomeLoss_ca4c7ba9-a3e3-4e21-8deb-6b578dc90c90" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_6de38d7d-8af2-48df-95c9-fdd1e67b7b5b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:to="loc_us-gaap_DividendsCommonStock_6de38d7d-8af2-48df-95c9-fdd1e67b7b5b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AdjustmentstoAdditionalPaidinCapitalContributionsbyParent_1961a64e-b405-4633-867f-af7628401353" xlink:href="ed-20221231.xsd#ed_AdjustmentstoAdditionalPaidinCapitalContributionsbyParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:to="loc_ed_AdjustmentstoAdditionalPaidinCapitalContributionsbyParent_1961a64e-b405-4633-867f-af7628401353" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_19a6ae28-bb2c-4a36-9a8c-2b1967abd3d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c6bb905d-feec-4088-98b0-76cd6ec6dd8d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_19a6ae28-bb2c-4a36-9a8c-2b1967abd3d6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_f401c9fb-2f32-40b8-97f7-7ab3c514b8a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_f176ce72-495d-4352-92d2-2ef7a469c9ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_d2977046-a546-4049-8d62-07dc9df0ba0d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_a1e7da22-8c21-482f-bcf4-8887d7844b32" xlink:to="loc_us-gaap_StatementTable_d2977046-a546-4049-8d62-07dc9df0ba0d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_3120ee27-b4a8-45d0-918a-e3d5a8c77361" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d2977046-a546-4049-8d62-07dc9df0ba0d" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_3120ee27-b4a8-45d0-918a-e3d5a8c77361" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_3120ee27-b4a8-45d0-918a-e3d5a8c77361_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_3120ee27-b4a8-45d0-918a-e3d5a8c77361" xlink:to="loc_us-gaap_EquityComponentDomain_3120ee27-b4a8-45d0-918a-e3d5a8c77361_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_3120ee27-b4a8-45d0-918a-e3d5a8c77361" xlink:to="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_fd0df7e0-eaf6-4a0e-8a26-e4494b438b1b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:to="loc_us-gaap_CommonStockMember_fd0df7e0-eaf6-4a0e-8a26-e4494b438b1b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_f1e24fd2-27bd-4bc4-94f6-cc385109de86" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_f1e24fd2-27bd-4bc4-94f6-cc385109de86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_61cacdf7-3dd8-47ec-bab9-815180bb0707" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:to="loc_us-gaap_RetainedEarningsMember_61cacdf7-3dd8-47ec-bab9-815180bb0707" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RepurchasedConEdisonStockMember_24f8bc8f-32a0-4a03-bddf-e8ececd6ea00" xlink:href="ed-20221231.xsd#ed_RepurchasedConEdisonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:to="loc_ed_RepurchasedConEdisonStockMember_24f8bc8f-32a0-4a03-bddf-e8ececd6ea00" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherChangesStockholdersEquityMember_a20e0989-6814-4a79-9635-1d29bd485f94" xlink:href="ed-20221231.xsd#ed_OtherChangesStockholdersEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:to="loc_ed_OtherChangesStockholdersEquityMember_a20e0989-6814-4a79-9635-1d29bd485f94" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_fe299768-574b-4b0c-9cc6-0ac692bc88c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_98bcf968-3c91-4e85-85fd-7d28a6955824" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_fe299768-574b-4b0c-9cc6-0ac692bc88c2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5f7aad7a-5e7b-4f34-b598-7ce535b3f66c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d2977046-a546-4049-8d62-07dc9df0ba0d" xlink:to="loc_dei_LegalEntityAxis_5f7aad7a-5e7b-4f34-b598-7ce535b3f66c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5f7aad7a-5e7b-4f34-b598-7ce535b3f66c_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5f7aad7a-5e7b-4f34-b598-7ce535b3f66c" xlink:to="loc_dei_EntityDomain_5f7aad7a-5e7b-4f34-b598-7ce535b3f66c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e2485fff-293a-4389-b2fb-f639f0cadc31" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5f7aad7a-5e7b-4f34-b598-7ce535b3f66c" xlink:to="loc_dei_EntityDomain_e2485fff-293a-4389-b2fb-f639f0cadc31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_2d579a21-b413-48b2-b23a-0bcee2b420c4" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e2485fff-293a-4389-b2fb-f639f0cadc31" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_2d579a21-b413-48b2-b23a-0bcee2b420c4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofCapitalizationCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofCapitalizationCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofCapitalizationCECONY" xlink:type="extended" id="icaa634941abb4a269a39b04dc0428fb2_ConsolidatedStatementofCapitalizationCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonStockEquityShares_6bef445d-3569-4840-9495-f757dfda0c2c" xlink:href="ed-20221231.xsd#ed_CommonStockEquityShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_ed_CommonStockEquityShares_6bef445d-3569-4840-9495-f757dfda0c2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonStockEquityBeforeAccumulatedComprehensiveIncomeLoss_02f2f974-a136-4140-afe4-972a40014dff" xlink:href="ed-20221231.xsd#ed_CommonStockEquityBeforeAccumulatedComprehensiveIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_ed_CommonStockEquityBeforeAccumulatedComprehensiveIncomeLoss_02f2f974-a136-4140-afe4-972a40014dff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_e4ca5860-5869-4cbf-b7de-86e4e331bf52" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_e4ca5860-5869-4cbf-b7de-86e4e331bf52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxAndReclassificationAdjustment_3c560159-0b43-4116-889c-f37db9e57561" xlink:href="ed-20221231.xsd#ed_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxAndReclassificationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_ed_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxAndReclassificationAdjustment_3c560159-0b43-4116-889c-f37db9e57561" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0ff654e9-3019-4313-8cbd-7acccacfaac6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0ff654e9-3019-4313-8cbd-7acccacfaac6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonStockEquity_fd210411-2241-4166-b86a-928e57976d2e" xlink:href="ed-20221231.xsd#ed_CommonStockEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_ed_CommonStockEquity_fd210411-2241-4166-b86a-928e57976d2e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_e552d311-69e0-4549-8330-d28e23797fbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_aaa71411-a251-4899-8ac4-d9d0c1570bc1" xlink:to="loc_us-gaap_StatementTable_e552d311-69e0-4549-8330-d28e23797fbb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e275197a-6ae2-4322-8936-2b1b80b58913" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_e552d311-69e0-4549-8330-d28e23797fbb" xlink:to="loc_dei_LegalEntityAxis_e275197a-6ae2-4322-8936-2b1b80b58913" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e275197a-6ae2-4322-8936-2b1b80b58913_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e275197a-6ae2-4322-8936-2b1b80b58913" xlink:to="loc_dei_EntityDomain_e275197a-6ae2-4322-8936-2b1b80b58913_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4509afa9-399f-45b7-8399-3eac614685fb" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e275197a-6ae2-4322-8936-2b1b80b58913" xlink:to="loc_dei_EntityDomain_4509afa9-399f-45b7-8399-3eac614685fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_790a637b-430b-4edb-b6c0-71cd011433fd" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4509afa9-399f-45b7-8399-3eac614685fb" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_790a637b-430b-4edb-b6c0-71cd011433fd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ConsolidatedStatementofCapitalizationLongTermDebtCECONY" xlink:type="simple" xlink:href="ed-20221231.xsd#ConsolidatedStatementofCapitalizationLongTermDebtCECONY"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ConsolidatedStatementofCapitalizationLongTermDebtCECONY" xlink:type="extended" id="i05cb38abd701473b902b7dff7bf9d95e_ConsolidatedStatementofCapitalizationLongTermDebtCECONY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_200b2ca9-91d3-4e9a-acf4-fae1f27addd4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_200b2ca9-91d3-4e9a-acf4-fae1f27addd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_448ac4e2-4559-4c96-bce7-9f75df285040" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_LongTermDebt_448ac4e2-4559-4c96-bce7-9f75df285040" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_2662fc94-ecf3-4b5e-9eeb-1b9bc2f9fce8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_2662fc94-ecf3-4b5e-9eeb-1b9bc2f9fce8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_f4fa1ef4-6b90-471a-9b52-43c32c544cc0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_f4fa1ef4-6b90-471a-9b52-43c32c544cc0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_ab561149-dd33-4a71-a874-1028edf6f89d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_ab561149-dd33-4a71-a874-1028edf6f89d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizationLongtermDebtAndEquity_fde94d80-db09-456d-a9b7-2d0c5a343397" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CapitalizationLongtermDebtAndEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_CapitalizationLongtermDebtAndEquity_fde94d80-db09-456d-a9b7-2d0c5a343397" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_de2c16f5-fc44-4dc8-a5ea-34a7b3de12b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_e04e1dcb-2aac-4514-9367-01391c36c285" xlink:to="loc_us-gaap_StatementTable_de2c16f5-fc44-4dc8-a5ea-34a7b3de12b9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_2f912a21-a52a-476e-a0ce-5b128b0e25a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_de2c16f5-fc44-4dc8-a5ea-34a7b3de12b9" xlink:to="loc_us-gaap_DebtInstrumentAxis_2f912a21-a52a-476e-a0ce-5b128b0e25a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2f912a21-a52a-476e-a0ce-5b128b0e25a8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_2f912a21-a52a-476e-a0ce-5b128b0e25a8" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2f912a21-a52a-476e-a0ce-5b128b0e25a8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_2f912a21-a52a-476e-a0ce-5b128b0e25a8" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2014B3.30PercentDue2024Member_5c4435e1-a66c-4d98-9777-46a79345d98e" xlink:href="ed-20221231.xsd#ed_Debenture2014B3.30PercentDue2024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2014B3.30PercentDue2024Member_5c4435e1-a66c-4d98-9777-46a79345d98e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2016B2.90Due2026Member_a8a19e22-369a-4d95-b333-7050a985c488" xlink:href="ed-20221231.xsd#ed_DebentureSeries2016B2.90Due2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeries2016B2.90Due2026Member_a8a19e22-369a-4d95-b333-7050a985c488" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSeventeenBThreePointOneTwoFivePercentDueTwoThousandTwentySevenMember_cc125c75-7ed7-4d92-871c-2adeb76e1a46" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSeventeenBThreePointOneTwoFivePercentDueTwoThousandTwentySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSeventeenBThreePointOneTwoFivePercentDueTwoThousandTwentySevenMember_cc125c75-7ed7-4d92-871c-2adeb76e1a46" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018A3.800Due2028Member_27d557bc-e90b-414a-8f7f-8afaa8279c8a" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018A3.800Due2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeries2018A3.800Due2028Member_27d557bc-e90b-414a-8f7f-8afaa8279c8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018D4.000Due2028Member_8ef1882e-b9f9-4c18-a09e-ae36806fdf89" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018D4.000Due2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeries2018D4.000Due2028Member_8ef1882e-b9f9-4c18-a09e-ae36806fdf89" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020A335PercentDue2030Member_dd238f91-acf3-49ee-90e3-bcf7985ee70d" xlink:href="ed-20221231.xsd#ed_Debenture2020A335PercentDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2020A335PercentDue2030Member_dd238f91-acf3-49ee-90e3-bcf7985ee70d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021A240PercentDue2031Member_dac38e2e-a9f4-4b1d-ab2e-3cd6c4f391cf" xlink:href="ed-20221231.xsd#ed_Debenture2021A240PercentDue2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2021A240PercentDue2031Member_dac38e2e-a9f4-4b1d-ab2e-3cd6c4f391cf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandThreeaFivePointEightSevenFivePercentDueTwoThousandThirtyThreeMember_2e05433e-6150-4d35-a8ab-daead4402468" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandThreeaFivePointEightSevenFivePercentDueTwoThousandThirtyThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandThreeaFivePointEightSevenFivePercentDueTwoThousandThirtyThreeMember_2e05433e-6150-4d35-a8ab-daead4402468" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandThreeCFivePointOneZeroPercentDueTwoThousandThirtyThreeMember_d25a9d7e-81e2-498a-9589-7f5bb0e7d373" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandThreeCFivePointOneZeroPercentDueTwoThousandThirtyThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandThreeCFivePointOneZeroPercentDueTwoThousandThirtyThreeMember_d25a9d7e-81e2-498a-9589-7f5bb0e7d373" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandFourBFivePointSevenZeroPercentDueTwoThousandThirtyFourMember_b1606290-09b3-469c-86c7-015092de38c5" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandFourBFivePointSevenZeroPercentDueTwoThousandThirtyFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandFourBFivePointSevenZeroPercentDueTwoThousandThirtyFourMember_b1606290-09b3-469c-86c7-015092de38c5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandFiveaFivePointThreeZeroPercentDueTwoThousandThirtyFiveMember_c6fefb51-6e70-4c29-be15-d18a452a5e43" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandFiveaFivePointThreeZeroPercentDueTwoThousandThirtyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandFiveaFivePointThreeZeroPercentDueTwoThousandThirtyFiveMember_c6fefb51-6e70-4c29-be15-d18a452a5e43" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandFiveBFivePointTwoFivePercentDueTwoThousandThirtyFiveMember_c5e991be-36c8-4887-850e-4e68b372de3d" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandFiveBFivePointTwoFivePercentDueTwoThousandThirtyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandFiveBFivePointTwoFivePercentDueTwoThousandThirtyFiveMember_c5e991be-36c8-4887-850e-4e68b372de3d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSixaFivePointEightFivePercentDueTwoThousandThirtySixMember_67633a18-6759-45ff-ab95-a6c175593705" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSixaFivePointEightFivePercentDueTwoThousandThirtySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSixaFivePointEightFivePercentDueTwoThousandThirtySixMember_67633a18-6759-45ff-ab95-a6c175593705" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSixBSixPointTwoZeroPercentDueTwoThousandThirtySixMember_b1094fec-9196-40e4-88c3-29d1062ea8b3" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSixBSixPointTwoZeroPercentDueTwoThousandThirtySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSixBSixPointTwoZeroPercentDueTwoThousandThirtySixMember_b1094fec-9196-40e4-88c3-29d1062ea8b3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSixEFivePointSevenZeroPercentDueTwoThousandThirtySixMember_0d182105-20f0-45c0-9f80-67751a3203f9" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSixEFivePointSevenZeroPercentDueTwoThousandThirtySixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSixEFivePointSevenZeroPercentDueTwoThousandThirtySixMember_0d182105-20f0-45c0-9f80-67751a3203f9" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSevenaSixPointThreeZeroPercentDueTwoThousandThirtySevenMember_60f3b1c4-4a68-473f-8e17-5c3d17ed604f" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSevenaSixPointThreeZeroPercentDueTwoThousandThirtySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSevenaSixPointThreeZeroPercentDueTwoThousandThirtySevenMember_60f3b1c4-4a68-473f-8e17-5c3d17ed604f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2008B6.75PercentDue2038Member_f5f034cf-1d3a-4a21-a046-0257d17846df" xlink:href="ed-20221231.xsd#ed_Debenture2008B6.75PercentDue2038Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2008B6.75PercentDue2038Member_f5f034cf-1d3a-4a21-a046-0257d17846df" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2009C5.50PercentDue2039Member_d30c6378-e9a8-4cd1-99e2-06892f413ba4" xlink:href="ed-20221231.xsd#ed_Debenture2009C5.50PercentDue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2009C5.50PercentDue2039Member_d30c6378-e9a8-4cd1-99e2-06892f413ba4" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2010B5.70PercentDue2040Member_789e6bdb-47fb-49d5-a13f-f431a0ef3468" xlink:href="ed-20221231.xsd#ed_Debenture2010B5.70PercentDue2040Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2010B5.70PercentDue2040Member_789e6bdb-47fb-49d5-a13f-f431a0ef3468" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2012A4.20PercentDue2042Member_e38c88d1-47cd-4d95-89c2-b21018cff4e3" xlink:href="ed-20221231.xsd#ed_Debenture2012A4.20PercentDue2042Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2012A4.20PercentDue2042Member_e38c88d1-47cd-4d95-89c2-b21018cff4e3" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2013A3.95PercentDue2043Member_d57554b6-5a34-4379-a102-fbf54d7c0a43" xlink:href="ed-20221231.xsd#ed_Debenture2013A3.95PercentDue2043Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2013A3.95PercentDue2043Member_d57554b6-5a34-4379-a102-fbf54d7c0a43" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2014A4.45PercentDue2044Member_38ee922f-c190-4142-b903-aaf9dbf98ecb" xlink:href="ed-20221231.xsd#ed_Debenture2014A4.45PercentDue2044Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2014A4.45PercentDue2044Member_38ee922f-c190-4142-b903-aaf9dbf98ecb" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2015A4.50PercentDue2045Member_e896f7e9-b67a-48a4-b397-bda493c66d99" xlink:href="ed-20221231.xsd#ed_Debenture2015A4.50PercentDue2045Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2015A4.50PercentDue2045Member_e896f7e9-b67a-48a4-b397-bda493c66d99" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2016A3.85PercentDue2046Member_ac844d28-6142-4faf-869c-af864b2ca76b" xlink:href="ed-20221231.xsd#ed_Debenture2016A3.85PercentDue2046Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2016A3.85PercentDue2046Member_ac844d28-6142-4faf-869c-af864b2ca76b" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSeventeenAThreePointEightSevenFivePercentDueTwoThousandFortySevenMember_73647d63-715c-468c-8a8f-51b49f20290d" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSeventeenAThreePointEightSevenFivePercentDueTwoThousandFortySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSeventeenAThreePointEightSevenFivePercentDueTwoThousandFortySevenMember_73647d63-715c-468c-8a8f-51b49f20290d" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018E4.650Due2048Member_bf71a053-dd2b-4e54-a6ef-0345e628fe16" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018E4.650Due2048Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeries2018E4.650Due2048Member_bf71a053-dd2b-4e54-a6ef-0345e628fe16" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019A4.125PercentDue2049Member_33eb4959-f384-4278-899f-b290ea84baa2" xlink:href="ed-20221231.xsd#ed_Debenture2019A4.125PercentDue2049Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2019A4.125PercentDue2049Member_33eb4959-f384-4278-899f-b290ea84baa2" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020B395PercentDue2050Member_93281612-c45a-47e0-afbd-3711e77c9307" xlink:href="ed-20221231.xsd#ed_Debenture2020B395PercentDue2050Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2020B395PercentDue2050Member_93281612-c45a-47e0-afbd-3711e77c9307" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021C3200PercentDue2051Member_934341f2-79f9-4413-a8cd-28feec5f7fb8" xlink:href="ed-20221231.xsd#ed_Debenture2021C3200PercentDue2051Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2021C3200PercentDue2051Member_934341f2-79f9-4413-a8cd-28feec5f7fb8" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2022A615PercentDue2052Member_4b96e0e0-8edb-4f9c-882c-c00172d5cac6" xlink:href="ed-20221231.xsd#ed_Debenture2022A615PercentDue2052Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2022A615PercentDue2052Member_4b96e0e0-8edb-4f9c-882c-c00172d5cac6" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2014C4625Due2054Member_d1f87c6a-00c7-4c95-a556-dc6f908327b8" xlink:href="ed-20221231.xsd#ed_Debenture2014C4625Due2054Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2014C4625Due2054Member_d1f87c6a-00c7-4c95-a556-dc6f908327b8" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2016C4.30Due2056Member_bdba6fde-117a-487d-923c-3f191bcde1f2" xlink:href="ed-20221231.xsd#ed_DebentureSeries2016C4.30Due2056Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeries2016C4.30Due2056Member_bdba6fde-117a-487d-923c-3f191bcde1f2" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeriesTwoThousandSeventeenCFourPointZeroZeroPercentDueTwoThousandFiftySevenMember_b684e69f-fb12-4d80-856a-63ad47c29435" xlink:href="ed-20221231.xsd#ed_DebentureSeriesTwoThousandSeventeenCFourPointZeroZeroPercentDueTwoThousandFiftySevenMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeriesTwoThousandSeventeenCFourPointZeroZeroPercentDueTwoThousandFiftySevenMember_b684e69f-fb12-4d80-856a-63ad47c29435" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebentureSeries2018B4.500Due2058Member_915ce0a6-1b34-4bad-8242-adaf65de3d8e" xlink:href="ed-20221231.xsd#ed_DebentureSeries2018B4.500Due2058Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_DebentureSeries2018B4.500Due2058Member_915ce0a6-1b34-4bad-8242-adaf65de3d8e" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2019B3.70PercentDue2059Member_7e54f6ed-88a2-4cd7-a7e6-8cd965ea8acd" xlink:href="ed-20221231.xsd#ed_Debenture2019B3.70PercentDue2059Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2019B3.70PercentDue2059Member_7e54f6ed-88a2-4cd7-a7e6-8cd965ea8acd" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2020C300PercentDue2060Member_0f40ca2f-f6e9-480e-a26c-ed80a7ddf187" xlink:href="ed-20221231.xsd#ed_Debenture2020C300PercentDue2060Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2020C300PercentDue2060Member_0f40ca2f-f6e9-480e-a26c-ed80a7ddf187" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Debenture2021B360PercentDue2061Member_222f15e1-bc97-42fd-9c9c-a103366cf64a" xlink:href="ed-20221231.xsd#ed_Debenture2021B360PercentDue2061Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_Debenture2021B360PercentDue2061Member_222f15e1-bc97-42fd-9c9c-a103366cf64a" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtSeries2010ADue2036Member_f725d225-11b8-4bcb-a67e-bacc2c10e60e" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtSeries2010ADue2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_TaxExemptDebtSeries2010ADue2036Member_f725d225-11b8-4bcb-a67e-bacc2c10e60e" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtSeries2004CDue2039Member_80f6d521-a157-4590-bd3e-c01a041044ee" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtSeries2004CDue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_TaxExemptDebtSeries2004CDue2039Member_80f6d521-a157-4590-bd3e-c01a041044ee" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtSeries2005ADue2039Member_a9aa8806-7820-4118-bc3c-74b3006a420c" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtSeries2005ADue2039Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_c523ada9-0f10-4f9b-a4d9-4b32b2b73f31" xlink:to="loc_ed_TaxExemptDebtSeries2005ADue2039Member_a9aa8806-7820-4118-bc3c-74b3006a420c" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_b4e18782-a753-439a-ab95-ece83dc86290" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_de2c16f5-fc44-4dc8-a5ea-34a7b3de12b9" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_b4e18782-a753-439a-ab95-ece83dc86290" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_b4e18782-a753-439a-ab95-ece83dc86290_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_b4e18782-a753-439a-ab95-ece83dc86290" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_b4e18782-a753-439a-ab95-ece83dc86290_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2e45b278-de74-42b6-97e4-9819bf34d276" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_b4e18782-a753-439a-ab95-ece83dc86290" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2e45b278-de74-42b6-97e4-9819bf34d276" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebenturesMember_0af47b19-6373-402a-a9c2-88a14d5cb263" xlink:href="ed-20221231.xsd#ed_DebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2e45b278-de74-42b6-97e4-9819bf34d276" xlink:to="loc_ed_DebenturesMember_0af47b19-6373-402a-a9c2-88a14d5cb263" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtMember_01b83252-a268-4e16-b634-32a32a3f1d0c" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2e45b278-de74-42b6-97e4-9819bf34d276" xlink:to="loc_ed_TaxExemptDebtMember_01b83252-a268-4e16-b634-32a32a3f1d0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_33c0485a-c973-4162-9f69-2d3601754ba9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_de2c16f5-fc44-4dc8-a5ea-34a7b3de12b9" xlink:to="loc_dei_LegalEntityAxis_33c0485a-c973-4162-9f69-2d3601754ba9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_33c0485a-c973-4162-9f69-2d3601754ba9_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_33c0485a-c973-4162-9f69-2d3601754ba9" xlink:to="loc_dei_EntityDomain_33c0485a-c973-4162-9f69-2d3601754ba9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_56a28b8f-0d4f-4c87-ac22-a503a9c17997" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_33c0485a-c973-4162-9f69-2d3601754ba9" xlink:to="loc_dei_EntityDomain_56a28b8f-0d4f-4c87-ac22-a503a9c17997" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_0b7fc6d2-053e-40e1-80dc-c6e61a9c8968" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_56a28b8f-0d4f-4c87-ac22-a503a9c17997" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_0b7fc6d2-053e-40e1-80dc-c6e61a9c8968" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersRevenuesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersRevenuesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersRevenuesDetails" xlink:type="extended" id="i8df8f362aaa54945bf15a199d88e2d4e_SummaryofSignificantAccountingPoliciesandOtherMattersRevenuesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_612a0c9d-f662-48fe-aaae-50d3252c576b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExciseTaxesCollected_9b90a0da-5493-4a25-8bac-d1636ffa030b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ExciseTaxesCollected"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_612a0c9d-f662-48fe-aaae-50d3252c576b" xlink:to="loc_us-gaap_ExciseTaxesCollected_9b90a0da-5493-4a25-8bac-d1636ffa030b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8038d8d-6965-42df-8b2f-d66532e1b568" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_612a0c9d-f662-48fe-aaae-50d3252c576b" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8038d8d-6965-42df-8b2f-d66532e1b568" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ac9102c0-55aa-4c17-8b49-f67c9112941f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8038d8d-6965-42df-8b2f-d66532e1b568" xlink:to="loc_dei_LegalEntityAxis_ac9102c0-55aa-4c17-8b49-f67c9112941f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ac9102c0-55aa-4c17-8b49-f67c9112941f_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ac9102c0-55aa-4c17-8b49-f67c9112941f" xlink:to="loc_dei_EntityDomain_ac9102c0-55aa-4c17-8b49-f67c9112941f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f70ea51d-d793-4da0-8919-9024db9350b0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ac9102c0-55aa-4c17-8b49-f67c9112941f" xlink:to="loc_dei_EntityDomain_f70ea51d-d793-4da0-8919-9024db9350b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c1ae27af-995f-4753-8b5e-4a2bfc616ecd" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f70ea51d-d793-4da0-8919-9024db9350b0" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c1ae27af-995f-4753-8b5e-4a2bfc616ecd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersPlantandDepreciationNarrativeDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersPlantandDepreciationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersPlantandDepreciationNarrativeDetails" xlink:type="extended" id="ia4f5cc82fe864427a0ed5f2da8e0887c_SummaryofSignificantAccountingPoliciesandOtherMattersPlantandDepreciationNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate_3283e7cf-4316-4c48-86f1-670f37961eaf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate_3283e7cf-4316-4c48-86f1-670f37961eaf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService_3f9dbb02-a3af-467c-9645-38ddebb07763" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService_3f9dbb02-a3af-467c-9645-38ddebb07763" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_15428f04-ebfd-42ff-91a1-2e4130bbbf94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_15428f04-ebfd-42ff-91a1-2e4130bbbf94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_ba5ae165-60fb-4e41-8af8-99e7a6613e60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_ba5ae165-60fb-4e41-8af8-99e7a6613e60" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FiniteLivedIntangibleAssetsAnnualAmortizationExpense_94f77b26-556a-41c7-ae91-7c9ca8628413" xlink:href="ed-20221231.xsd#ed_FiniteLivedIntangibleAssetsAnnualAmortizationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_ed_FiniteLivedIntangibleAssetsAnnualAmortizationExpense_94f77b26-556a-41c7-ae91-7c9ca8628413" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_599da311-2413-4912-bfec-692b19f331ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_599da311-2413-4912-bfec-692b19f331ae" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesDepreciationAllowanceCurrentRatePlans_211ec18a-2e40-44cb-b3dd-53e67f2cb0f9" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesDepreciationAllowanceCurrentRatePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_ed_PublicUtilitiesDepreciationAllowanceCurrentRatePlans_211ec18a-2e40-44cb-b3dd-53e67f2cb0f9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_a8ff88a4-15a5-48f5-9f34-dff856a77c94" xlink:to="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f5e54463-95fe-4381-9752-ea3650bf5f92" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:to="loc_dei_LegalEntityAxis_f5e54463-95fe-4381-9752-ea3650bf5f92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f5e54463-95fe-4381-9752-ea3650bf5f92_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f5e54463-95fe-4381-9752-ea3650bf5f92" xlink:to="loc_dei_EntityDomain_f5e54463-95fe-4381-9752-ea3650bf5f92_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f83cbd7a-6219-4b53-926b-c6f83dce6cdb" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f5e54463-95fe-4381-9752-ea3650bf5f92" xlink:to="loc_dei_EntityDomain_f83cbd7a-6219-4b53-926b-c6f83dce6cdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_9168eeb8-3bdb-45b6-a285-c3fd57f8cf25" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f83cbd7a-6219-4b53-926b-c6f83dce6cdb" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_9168eeb8-3bdb-45b6-a285-c3fd57f8cf25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_c245486f-5951-4609-bc71-37937b179dcb" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f83cbd7a-6219-4b53-926b-c6f83dce6cdb" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_c245486f-5951-4609-bc71-37937b179dcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_2c7801c2-6908-4340-b4ab-8f5a1ca8779e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:to="loc_us-gaap_PublicUtilityAxis_2c7801c2-6908-4340-b4ab-8f5a1ca8779e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_2c7801c2-6908-4340-b4ab-8f5a1ca8779e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_2c7801c2-6908-4340-b4ab-8f5a1ca8779e" xlink:to="loc_us-gaap_UtilityPlantDomain_2c7801c2-6908-4340-b4ab-8f5a1ca8779e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_2c7801c2-6908-4340-b4ab-8f5a1ca8779e" xlink:to="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricityGenerationPlantNonNuclearMember_84e6b587-c800-4fb8-b293-697334b39866" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricityGenerationPlantNonNuclearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:to="loc_us-gaap_ElectricityGenerationPlantNonNuclearMember_84e6b587-c800-4fb8-b293-697334b39866" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_ec2dc349-d1fa-4e0b-b1cc-5d5b97ad3e39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:to="loc_us-gaap_GasTransmissionMember_ec2dc349-d1fa-4e0b-b1cc-5d5b97ad3e39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_8c403b7b-3925-44f2-b7d5-ee6833b8e9e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:to="loc_us-gaap_SteamPlantMember_8c403b7b-3925-44f2-b7d5-ee6833b8e9e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GeneralUtilityMember_a71c3312-c685-4dd4-b49a-655ab8e1cd33" xlink:href="ed-20221231.xsd#ed_GeneralUtilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:to="loc_ed_GeneralUtilityMember_a71c3312-c685-4dd4-b49a-655ab8e1cd33" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonUtilityPlantMember_d98c7290-90b6-4c43-baa5-29207e0db355" xlink:href="ed-20221231.xsd#ed_NonUtilityPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_6528dbcf-5b7b-4e46-a01e-098102e3c898" xlink:to="loc_ed_NonUtilityPlantMember_d98c7290-90b6-4c43-baa5-29207e0db355" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2a477a51-b420-4f02-8b17-acfec9638d5a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:to="loc_srt_RangeAxis_2a477a51-b420-4f02-8b17-acfec9638d5a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2a477a51-b420-4f02-8b17-acfec9638d5a_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2a477a51-b420-4f02-8b17-acfec9638d5a" xlink:to="loc_srt_RangeMember_2a477a51-b420-4f02-8b17-acfec9638d5a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_0aaa87b4-810f-4c74-9da5-e3f4aec281ff" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2a477a51-b420-4f02-8b17-acfec9638d5a" xlink:to="loc_srt_RangeMember_0aaa87b4-810f-4c74-9da5-e3f4aec281ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_5ffe2410-4e3b-4f7a-9ec5-a67af368ae1a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_0aaa87b4-810f-4c74-9da5-e3f4aec281ff" xlink:to="loc_srt_MinimumMember_5ffe2410-4e3b-4f7a-9ec5-a67af368ae1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f2760282-6e15-4278-a860-e418a6a17cfd" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_0aaa87b4-810f-4c74-9da5-e3f4aec281ff" xlink:to="loc_srt_MaximumMember_f2760282-6e15-4278-a860-e418a6a17cfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_41b9e776-ce3f-4fc0-b4fd-1524a4911fac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_41b9e776-ce3f-4fc0-b4fd-1524a4911fac" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_41b9e776-ce3f-4fc0-b4fd-1524a4911fac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_41b9e776-ce3f-4fc0-b4fd-1524a4911fac" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_41b9e776-ce3f-4fc0-b4fd-1524a4911fac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_85736428-3064-4001-9dbc-03a91c2d0e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_41b9e776-ce3f-4fc0-b4fd-1524a4911fac" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_85736428-3064-4001-9dbc-03a91c2d0e5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_7b89f09d-6453-418b-ae5c-c4db9d12bae3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_85736428-3064-4001-9dbc-03a91c2d0e5c" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_7b89f09d-6453-418b-ae5c-c4db9d12bae3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a3445c4c-1dff-4e1a-8948-b0a27e9f51d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_e46077b8-b513-4028-83f4-fb33ada8ad23" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a3445c4c-1dff-4e1a-8948-b0a27e9f51d2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a3445c4c-1dff-4e1a-8948-b0a27e9f51d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a3445c4c-1dff-4e1a-8948-b0a27e9f51d2" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a3445c4c-1dff-4e1a-8948-b0a27e9f51d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_29546a11-352c-4fe9-926f-0b88f4219e70" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a3445c4c-1dff-4e1a-8948-b0a27e9f51d2" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_29546a11-352c-4fe9-926f-0b88f4219e70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WindPowerGeneratingAssetsMember_3d9e6123-0c41-4bab-8295-56b8852ba3d9" xlink:href="ed-20221231.xsd#ed_WindPowerGeneratingAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_29546a11-352c-4fe9-926f-0b88f4219e70" xlink:to="loc_ed_WindPowerGeneratingAssetsMember_3d9e6123-0c41-4bab-8295-56b8852ba3d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LandAndConduitMember_d4e38f33-f5fb-4be9-a3d1-fbe7a0b294b1" xlink:href="ed-20221231.xsd#ed_LandAndConduitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_29546a11-352c-4fe9-926f-0b88f4219e70" xlink:to="loc_ed_LandAndConduitMember_d4e38f33-f5fb-4be9-a3d1-fbe7a0b294b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SolarPoweredGeneratingAssetsMember_87d6858e-9e70-4207-8d78-eb5a47bc563e" xlink:href="ed-20221231.xsd#ed_SolarPoweredGeneratingAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_29546a11-352c-4fe9-926f-0b88f4219e70" xlink:to="loc_ed_SolarPoweredGeneratingAssetsMember_87d6858e-9e70-4207-8d78-eb5a47bc563e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersCapitalizedCostofUtilityPlantDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersCapitalizedCostofUtilityPlantDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersCapitalizedCostofUtilityPlantDetails" xlink:type="extended" id="i0829d14a066747b2ab27f902c64641c3_SummaryofSignificantAccountingPoliciesandOtherMattersCapitalizedCostofUtilityPlantDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing_3a3832f5-a88e-400b-8354-179f8848d811" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing_3a3832f5-a88e-400b-8354-179f8848d811" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmission_bf99a53e-264e-42a2-968c-7042821a2e34" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmission"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmission_bf99a53e-264e-42a2-968c-7042821a2e34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDistribution_c28439cd-aef6-4681-803a-20bf89fdccbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDistribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDistribution_c28439cd-aef6-4681-803a-20bf89fdccbb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantandEquipmentGeneral_038613d3-c973-42cf-9b61-08ac99cf3f0a" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantandEquipmentGeneral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_ed_PublicUtilitiesPropertyPlantandEquipmentGeneral_038613d3-c973-42cf-9b61-08ac99cf3f0a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentFuel_89a512b3-6777-42d7-abfc-974dc0d029dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentFuel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentFuel_89a512b3-6777-42d7-abfc-974dc0d029dc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentSteam_0b3c6426-0eac-42f4-a8d4-973190b1acd2" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantAndEquipmentSteam"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentSteam_0b3c6426-0eac-42f4-a8d4-973190b1acd2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_1ec36f61-f3d1-4c10-a4b5-7e8acb10aaab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentCommon_1ec36f61-f3d1-4c10-a4b5-7e8acb10aaab" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlantHeldForFutureUseAmount_35c47003-e9cc-4a94-8880-dfb46a827658" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlantHeldForFutureUseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PlantHeldForFutureUseAmount_35c47003-e9cc-4a94-8880-dfb46a827658" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_82cb95a0-51e1-4119-83c5-5ff8c94ae6d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress_82cb95a0-51e1-4119-83c5-5ff8c94ae6d0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_0c334bed-6354-405c-859d-8e2c371fe812" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_0c334bed-6354-405c-859d-8e2c371fe812" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_28025be3-8d6c-4504-b80e-3222800ef273" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_5c49ec8a-a5c1-4acf-9986-b0aa5408d996" xlink:to="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_28025be3-8d6c-4504-b80e-3222800ef273" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_fe6bb47c-8a0a-493f-967e-69154f14ff8a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_28025be3-8d6c-4504-b80e-3222800ef273" xlink:to="loc_dei_LegalEntityAxis_fe6bb47c-8a0a-493f-967e-69154f14ff8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fe6bb47c-8a0a-493f-967e-69154f14ff8a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_fe6bb47c-8a0a-493f-967e-69154f14ff8a" xlink:to="loc_dei_EntityDomain_fe6bb47c-8a0a-493f-967e-69154f14ff8a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_781a6963-5f01-44e4-89a6-6ac781418ed1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_fe6bb47c-8a0a-493f-967e-69154f14ff8a" xlink:to="loc_dei_EntityDomain_781a6963-5f01-44e4-89a6-6ac781418ed1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d558b5a3-4a91-434c-950d-51b4339e01bc" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_781a6963-5f01-44e4-89a6-6ac781418ed1" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d558b5a3-4a91-434c-950d-51b4339e01bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_5dfd7a15-3727-4184-aeaa-30c19913ef22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_28025be3-8d6c-4504-b80e-3222800ef273" xlink:to="loc_us-gaap_PublicUtilityAxis_5dfd7a15-3727-4184-aeaa-30c19913ef22" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_5dfd7a15-3727-4184-aeaa-30c19913ef22_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_5dfd7a15-3727-4184-aeaa-30c19913ef22" xlink:to="loc_us-gaap_UtilityPlantDomain_5dfd7a15-3727-4184-aeaa-30c19913ef22_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_5dfd7a15-3727-4184-aeaa-30c19913ef22" xlink:to="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricityGenerationPlantNonNuclearMember_cb7d2dd4-578d-4423-b7c2-7e14bdb019cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricityGenerationPlantNonNuclearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_us-gaap_ElectricityGenerationPlantNonNuclearMember_cb7d2dd4-578d-4423-b7c2-7e14bdb019cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_d3ba4ad3-eeb8-4959-a703-164f0e62b210" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_us-gaap_ElectricTransmissionMember_d3ba4ad3-eeb8-4959-a703-164f0e62b210" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricDistributionMember_9a73c3f8-7cff-4fa2-8603-70ab6a6a68d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricDistributionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_us-gaap_ElectricDistributionMember_9a73c3f8-7cff-4fa2-8603-70ab6a6a68d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricGeneralMember_d01773b5-b802-4b90-a0dc-a36d7d26223c" xlink:href="ed-20221231.xsd#ed_ElectricGeneralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_ed_ElectricGeneralMember_d01773b5-b802-4b90-a0dc-a36d7d26223c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_e7e5335b-cd0c-4cdc-953e-6c4ee4cf8806" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_us-gaap_GasTransmissionMember_e7e5335b-cd0c-4cdc-953e-6c4ee4cf8806" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_74741ea3-ae6d-4f59-a070-81427d3020d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_us-gaap_SteamPlantMember_74741ea3-ae6d-4f59-a070-81427d3020d1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GeneralUtilityMember_22a832b5-e90b-48df-84c5-1624130416ff" xlink:href="ed-20221231.xsd#ed_GeneralUtilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_3e418314-ffc9-4080-ab0b-bc1866bbabbb" xlink:to="loc_ed_GeneralUtilityMember_22a832b5-e90b-48df-84c5-1624130416ff" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersOtherDeferredChargesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersOtherDeferredChargesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersOtherDeferredChargesDetails" xlink:type="extended" id="if568c422c78d4c9cb2cb2c4686b127bb_SummaryofSignificantAccountingPoliciesandOtherMattersOtherDeferredChargesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_0bada175-3dd3-4eb6-a980-0d72c064e6d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_969d164e-edfa-4352-a53d-ab0f361e83a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_0bada175-3dd3-4eb6-a980-0d72c064e6d0" xlink:to="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_969d164e-edfa-4352-a53d-ab0f361e83a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherDeferredChargesAndNoncurrentAssets_7bd311af-5c04-4523-a184-390a04b5c773" xlink:href="ed-20221231.xsd#ed_OtherDeferredChargesAndNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_0bada175-3dd3-4eb6-a980-0d72c064e6d0" xlink:to="loc_ed_OtherDeferredChargesAndNoncurrentAssets_7bd311af-5c04-4523-a184-390a04b5c773" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DepreciationExpenseOtherDeferredChargesAndNoncurrentAssetsAndPrepayments_63e693ed-9a39-494e-9a59-c9a850c8d776" xlink:href="ed-20221231.xsd#ed_DepreciationExpenseOtherDeferredChargesAndNoncurrentAssetsAndPrepayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_0bada175-3dd3-4eb6-a980-0d72c064e6d0" xlink:to="loc_ed_DepreciationExpenseOtherDeferredChargesAndNoncurrentAssetsAndPrepayments_63e693ed-9a39-494e-9a59-c9a850c8d776" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AccumulatedDepreciationOtherDeferredChargesAndNoncurrentAssetsAndPrepayments_70e47915-cd9b-4028-acfe-2d936a4f1d8a" xlink:href="ed-20221231.xsd#ed_AccumulatedDepreciationOtherDeferredChargesAndNoncurrentAssetsAndPrepayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_0bada175-3dd3-4eb6-a980-0d72c064e6d0" xlink:to="loc_ed_AccumulatedDepreciationOtherDeferredChargesAndNoncurrentAssetsAndPrepayments_70e47915-cd9b-4028-acfe-2d936a4f1d8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_f76e6363-08d1-4d7f-b318-f52d5eb840d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems_0bada175-3dd3-4eb6-a980-0d72c064e6d0" xlink:to="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_f76e6363-08d1-4d7f-b318-f52d5eb840d1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_80167d64-6c0e-47fd-91bf-495e8060dc75" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilityPropertyPlantAndEquipmentTable_f76e6363-08d1-4d7f-b318-f52d5eb840d1" xlink:to="loc_dei_LegalEntityAxis_80167d64-6c0e-47fd-91bf-495e8060dc75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_80167d64-6c0e-47fd-91bf-495e8060dc75_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_80167d64-6c0e-47fd-91bf-495e8060dc75" xlink:to="loc_dei_EntityDomain_80167d64-6c0e-47fd-91bf-495e8060dc75_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_19413d18-5d74-4363-8add-3eaad0378e9e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_80167d64-6c0e-47fd-91bf-495e8060dc75" xlink:to="loc_dei_EntityDomain_19413d18-5d74-4363-8add-3eaad0378e9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c073cbbd-e380-4f39-8700-775150ecd43c" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_19413d18-5d74-4363-8add-3eaad0378e9e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c073cbbd-e380-4f39-8700-775150ecd43c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersLongLivedandIntangibleAssetsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersLongLivedandIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersLongLivedandIntangibleAssetsDetails" xlink:type="extended" id="ib6d7b5fe20774f0a8a53f060eab4ffb0_SummaryofSignificantAccountingPoliciesandOtherMattersLongLivedandIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_90dceebd-b3c4-48b8-a083-556d385ade57" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_90dceebd-b3c4-48b8-a083-556d385ade57" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_d47f1a0c-bd18-457e-b40c-c73cb17a3546" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_d47f1a0c-bd18-457e-b40c-c73cb17a3546" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_656cd150-51aa-4070-b9f8-8be5e1f66450" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_656cd150-51aa-4070-b9f8-8be5e1f66450" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_b7b22b67-5b33-4e88-8a32-127723988034" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_b7b22b67-5b33-4e88-8a32-127723988034" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8728014f-daab-4644-9f31-3ffbb1c61922" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8728014f-daab-4644-9f31-3ffbb1c61922" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ab15f2e1-fd3b-46d0-9638-f09c2f2b80ea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_ab15f2e1-fd3b-46d0-9638-f09c2f2b80ea" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_160b298f-cdfd-40f4-a2e4-a1948003ae8b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_160b298f-cdfd-40f4-a2e4-a1948003ae8b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4f356cca-9d75-49b6-b766-090300274751" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4f356cca-9d75-49b6-b766-090300274751" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_17be1e25-404e-49d9-9ea4-72ce8b9d9898" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_17be1e25-404e-49d9-9ea4-72ce8b9d9898" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_919a662d-01a8-41eb-9822-5f0998eefc35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_a9fb1da9-6faf-4ded-84d4-f7036f51b8e5" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_919a662d-01a8-41eb-9822-5f0998eefc35" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_690ba76a-2361-4c55-a209-f7a6ba008237" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_919a662d-01a8-41eb-9822-5f0998eefc35" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_690ba76a-2361-4c55-a209-f7a6ba008237" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_690ba76a-2361-4c55-a209-f7a6ba008237_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_690ba76a-2361-4c55-a209-f7a6ba008237" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_690ba76a-2361-4c55-a209-f7a6ba008237_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e362d2d7-1801-4f68-9525-ee087f64c2b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_690ba76a-2361-4c55-a209-f7a6ba008237" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e362d2d7-1801-4f68-9525-ee087f64c2b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PowerPurchaseAgreementsMember_ba63f306-0d9b-4104-8706-ca7796cc47cb" xlink:href="ed-20221231.xsd#ed_PowerPurchaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e362d2d7-1801-4f68-9525-ee087f64c2b1" xlink:to="loc_ed_PowerPurchaseAgreementsMember_ba63f306-0d9b-4104-8706-ca7796cc47cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_bb75dc16-6679-4f57-80b1-9455e9055d61" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_e362d2d7-1801-4f68-9525-ee087f64c2b1" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_bb75dc16-6679-4f57-80b1-9455e9055d61" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersRecoverableEnergyCostsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersRecoverableEnergyCostsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersRecoverableEnergyCostsDetails" xlink:type="extended" id="i9484370493cd4c8688b550874c890354_SummaryofSignificantAccountingPoliciesandOtherMattersRecoverableEnergyCostsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_6b3d4cc4-d052-4f81-9c56-2af77728dd89" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryCostsDeferralPeriodOne_1f54220f-d891-47b3-afa6-c295f25d1b95" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryCostsDeferralPeriodOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_6b3d4cc4-d052-4f81-9c56-2af77728dd89" xlink:to="loc_ed_PublicUtilitiesRecoveryCostsDeferralPeriodOne_1f54220f-d891-47b3-afa6-c295f25d1b95" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ca0bb15a-3823-4bb1-9da8-d62473ebbb9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_6b3d4cc4-d052-4f81-9c56-2af77728dd89" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ca0bb15a-3823-4bb1-9da8-d62473ebbb9f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_da76e2da-5288-466f-80c5-fdce114e5e65" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ca0bb15a-3823-4bb1-9da8-d62473ebbb9f" xlink:to="loc_srt_RangeAxis_da76e2da-5288-466f-80c5-fdce114e5e65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_da76e2da-5288-466f-80c5-fdce114e5e65_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_da76e2da-5288-466f-80c5-fdce114e5e65" xlink:to="loc_srt_RangeMember_da76e2da-5288-466f-80c5-fdce114e5e65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7f6af9de-7ecf-4d89-a346-ed10abc1c76b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_da76e2da-5288-466f-80c5-fdce114e5e65" xlink:to="loc_srt_RangeMember_7f6af9de-7ecf-4d89-a346-ed10abc1c76b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_0109aa3f-6178-4ce4-8949-5e076a9741a3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7f6af9de-7ecf-4d89-a346-ed10abc1c76b" xlink:to="loc_srt_MinimumMember_0109aa3f-6178-4ce4-8949-5e076a9741a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_1fea195f-8fd1-4d84-9380-cc1a731f5c0f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7f6af9de-7ecf-4d89-a346-ed10abc1c76b" xlink:to="loc_srt_MaximumMember_1fea195f-8fd1-4d84-9380-cc1a731f5c0f" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersInvestmentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersInvestmentsDetails" xlink:type="extended" id="ic8b530d4152c4fd5805611cccfcb7873_SummaryofSignificantAccountingPoliciesandOtherMattersInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_d38f9c86-ecd0-4edd-b44d-06d7d1cac083" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_d38f9c86-ecd0-4edd-b44d-06d7d1cac083" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_7dc6a7a4-b3fc-40bd-b044-d8cc6adcba39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_7dc6a7a4-b3fc-40bd-b044-d8cc6adcba39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_9fe84cd6-c22a-4ff9-9eea-7de85fe8281b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment_9fe84cd6-c22a-4ff9-9eea-7de85fe8281b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EquityMethodInvestmentRealizedGainLossOnDisposalBeforeTax_883f69ad-ea58-4072-9810-9b9a582f8619" xlink:href="ed-20221231.xsd#ed_EquityMethodInvestmentRealizedGainLossOnDisposalBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_EquityMethodInvestmentRealizedGainLossOnDisposalBeforeTax_883f69ad-ea58-4072-9810-9b9a582f8619" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_8a14146e-8969-42ea-85d2-e9fd59305fcb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_8a14146e-8969-42ea-85d2-e9fd59305fcb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_4a0a06c2-7996-4073-a150-464826063ae9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_EquityMethodInvestments_4a0a06c2-7996-4073-a150-464826063ae9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NumberOfMilesInPipelineConstruction_2202f1a7-e8d8-41a0-aaba-2db5b17f389b" xlink:href="ed-20221231.xsd#ed_NumberOfMilesInPipelineConstruction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_NumberOfMilesInPipelineConstruction_2202f1a7-e8d8-41a0-aaba-2db5b17f389b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EquityMethodInvestmentOwnershipPercentageExpectedIncreaseDecrease_7992582c-fb15-4151-b6f0-d807f92a75a1" xlink:href="ed-20221231.xsd#ed_EquityMethodInvestmentOwnershipPercentageExpectedIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_EquityMethodInvestmentOwnershipPercentageExpectedIncreaseDecrease_7992582c-fb15-4151-b6f0-d807f92a75a1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EquityMethodInvestmentProjectPercentCompletion_41a718fd-cabe-43a6-bf67-9f22495de685" xlink:href="ed-20221231.xsd#ed_EquityMethodInvestmentProjectPercentCompletion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_EquityMethodInvestmentProjectPercentCompletion_41a718fd-cabe-43a6-bf67-9f22495de685" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LongTermFirmTransportationContractPeriod_b8a824e5-7b3c-483a-9679-1481d91ea518" xlink:href="ed-20221231.xsd#ed_LongTermFirmTransportationContractPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_LongTermFirmTransportationContractPeriod_b8a824e5-7b3c-483a-9679-1481d91ea518" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CashFlowsDiscountRate_faaab008-fef7-4e5d-9160-8ea216bd2ebd" xlink:href="ed-20221231.xsd#ed_CashFlowsDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_CashFlowsDiscountRate_faaab008-fef7-4e5d-9160-8ea216bd2ebd" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EquityMethodInvestmentOtherThanTemporaryImpairmentNetOfTax_136bf966-d1d8-442c-ba74-e86b39f7d91e" xlink:href="ed-20221231.xsd#ed_EquityMethodInvestmentOtherThanTemporaryImpairmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_EquityMethodInvestmentOtherThanTemporaryImpairmentNetOfTax_136bf966-d1d8-442c-ba74-e86b39f7d91e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_b9c6b15b-3326-4964-872c-2e7f2e2e82ba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_b9c6b15b-3326-4964-872c-2e7f2e2e82ba" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_c759e629-3a4a-4c5b-b7ac-629eeff1c02d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_c759e629-3a4a-4c5b-b7ac-629eeff1c02d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncreaseDecreaseInDeferredTaxAssets_4e7a3b75-3b1b-4074-b796-f539199eee31" xlink:href="ed-20221231.xsd#ed_IncreaseDecreaseInDeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_ed_IncreaseDecreaseInDeferredTaxAssets_4e7a3b75-3b1b-4074-b796-f539199eee31" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_8492a7ef-9e93-4f8a-a9f4-6a16b61059f7" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f69e5c05-1586-4761-8102-003d00a58efe" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:to="loc_dei_LegalEntityAxis_f69e5c05-1586-4761-8102-003d00a58efe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f69e5c05-1586-4761-8102-003d00a58efe_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f69e5c05-1586-4761-8102-003d00a58efe" xlink:to="loc_dei_EntityDomain_f69e5c05-1586-4761-8102-003d00a58efe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8eec8d73-2889-40df-bf01-cb1d745ec16c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f69e5c05-1586-4761-8102-003d00a58efe" xlink:to="loc_dei_EntityDomain_8eec8d73-2889-40df-bf01-cb1d745ec16c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_5c205755-b8bc-4685-ba1c-43e24c767c85" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8eec8d73-2889-40df-bf01-cb1d745ec16c" xlink:to="loc_ed_ConEdisonTransmissionMember_5c205755-b8bc-4685-ba1c-43e24c767c85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonGasPipelineandStorageLLCMember_3603fdb6-decc-4e97-af33-e1a68935a155" xlink:href="ed-20221231.xsd#ed_ConEdisonGasPipelineandStorageLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8eec8d73-2889-40df-bf01-cb1d745ec16c" xlink:to="loc_ed_ConEdisonGasPipelineandStorageLLCMember_3603fdb6-decc-4e97-af33-e1a68935a155" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_8eff59ef-e82a-4698-894c-7ab775b18aa4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_8eff59ef-e82a-4698-894c-7ab775b18aa4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_8eff59ef-e82a-4698-894c-7ab775b18aa4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8eff59ef-e82a-4698-894c-7ab775b18aa4" xlink:to="loc_us-gaap_SegmentDomain_8eff59ef-e82a-4698-894c-7ab775b18aa4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_44c72d46-f056-4672-8115-60838b38496e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8eff59ef-e82a-4698-894c-7ab775b18aa4" xlink:to="loc_us-gaap_SegmentDomain_44c72d46-f056-4672-8115-60838b38496e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_9e82e2de-2fd2-41f0-84d9-976a8004f83f" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_44c72d46-f056-4672-8115-60838b38496e" xlink:to="loc_ed_ConEdisonTransmissionMember_9e82e2de-2fd2-41f0-84d9-976a8004f83f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_f1fabf82-67db-4ab3-898f-6a58ad6aae25" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_f1fabf82-67db-4ab3-898f-6a58ad6aae25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_f1fabf82-67db-4ab3-898f-6a58ad6aae25_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_f1fabf82-67db-4ab3-898f-6a58ad6aae25" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_f1fabf82-67db-4ab3-898f-6a58ad6aae25_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_6dd0a2e6-b64d-4078-9fc6-8c75013ff1c2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_f1fabf82-67db-4ab3-898f-6a58ad6aae25" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_6dd0a2e6-b64d-4078-9fc6-8c75013ff1c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_StagecoachGasServicesLLCMember_3fbc4aec-94c2-4814-a75a-611490107ec7" xlink:href="ed-20221231.xsd#ed_StagecoachGasServicesLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_6dd0a2e6-b64d-4078-9fc6-8c75013ff1c2" xlink:to="loc_ed_StagecoachGasServicesLLCMember_3fbc4aec-94c2-4814-a75a-611490107ec7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MountainValleyPipelineLLCMember_5005b236-101d-4e64-be62-b997d928013b" xlink:href="ed-20221231.xsd#ed_MountainValleyPipelineLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_6dd0a2e6-b64d-4078-9fc6-8c75013ff1c2" xlink:to="loc_ed_MountainValleyPipelineLLCMember_5005b236-101d-4e64-be62-b997d928013b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_fe6b1bbc-6da2-4fab-9e12-6f899e32d95a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:to="loc_srt_OwnershipAxis_fe6b1bbc-6da2-4fab-9e12-6f899e32d95a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_fe6b1bbc-6da2-4fab-9e12-6f899e32d95a_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_fe6b1bbc-6da2-4fab-9e12-6f899e32d95a" xlink:to="loc_srt_OwnershipDomain_fe6b1bbc-6da2-4fab-9e12-6f899e32d95a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_000dafe2-4820-4b49-9cd5-14811c76f730" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_fe6b1bbc-6da2-4fab-9e12-6f899e32d95a" xlink:to="loc_srt_OwnershipDomain_000dafe2-4820-4b49-9cd5-14811c76f730" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_StagecoachGasServicesLLCMember_23e5e2e1-1c97-46da-b603-4dc618ab7403" xlink:href="ed-20221231.xsd#ed_StagecoachGasServicesLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_000dafe2-4820-4b49-9cd5-14811c76f730" xlink:to="loc_ed_StagecoachGasServicesLLCMember_23e5e2e1-1c97-46da-b603-4dc618ab7403" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MountainValleyPipelineLLCMember_c2ad45f5-42ff-472d-b3f2-ef593f4f3e2e" xlink:href="ed-20221231.xsd#ed_MountainValleyPipelineLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_000dafe2-4820-4b49-9cd5-14811c76f730" xlink:to="loc_ed_MountainValleyPipelineLLCMember_c2ad45f5-42ff-472d-b3f2-ef593f4f3e2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_35f6f03f-8481-4179-8949-72e65cc8aa7a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d2881a82-fead-4c16-adba-f97cbfac2c23" xlink:to="loc_srt_ConsolidatedEntitiesAxis_35f6f03f-8481-4179-8949-72e65cc8aa7a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_35f6f03f-8481-4179-8949-72e65cc8aa7a_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_35f6f03f-8481-4179-8949-72e65cc8aa7a" xlink:to="loc_srt_ConsolidatedEntitiesDomain_35f6f03f-8481-4179-8949-72e65cc8aa7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_b70e8a17-77e0-4f1e-a3a9-46c32019d27e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_35f6f03f-8481-4179-8949-72e65cc8aa7a" xlink:to="loc_srt_ConsolidatedEntitiesDomain_b70e8a17-77e0-4f1e-a3a9-46c32019d27e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_dfd28c0a-465f-495f-9a8a-daedc229c07e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_b70e8a17-77e0-4f1e-a3a9-46c32019d27e" xlink:to="loc_srt_SubsidiariesMember_dfd28c0a-465f-495f-9a8a-daedc229c07e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersScheduleofInvestmentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersScheduleofInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersScheduleofInvestmentsDetails" xlink:type="extended" id="if0c9eae71df44a3e8ab4c71d08fee5c2_SummaryofSignificantAccountingPoliciesandOtherMattersScheduleofInvestmentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_84fc7fe1-c256-42e6-97c8-5d7c37bd9cbf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_us-gaap_EquityMethodInvestments_84fc7fe1-c256-42e6-97c8-5d7c37bd9cbf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SupplementalRetirementIncomePlanAssets_8345953f-1c56-4c98-9fb5-e8ca4bc337a2" xlink:href="ed-20221231.xsd#ed_SupplementalRetirementIncomePlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_ed_SupplementalRetirementIncomePlanAssets_8345953f-1c56-4c98-9fb5-e8ca4bc337a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationPlanAssets_982252ee-b2c0-4ec4-9bc0-66156f47800c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCompensationPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_us-gaap_DeferredCompensationPlanAssets_982252ee-b2c0-4ec4-9bc0-66156f47800c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermInvestments_2ca34d23-8d5c-433c-8f10-165277aa3a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_us-gaap_OtherLongTermInvestments_2ca34d23-8d5c-433c-8f10-165277aa3a4b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_973b58bb-2101-433b-accb-ef92305a0d83" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_us-gaap_LongTermInvestments_973b58bb-2101-433b-accb-ef92305a0d83" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AggregateProjectCost_50dd9a9f-6c04-4b14-b136-fb5f45fbf24b" xlink:href="ed-20221231.xsd#ed_AggregateProjectCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_ed_AggregateProjectCost_50dd9a9f-6c04-4b14-b136-fb5f45fbf24b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_17d38b9a-949f-4a1c-bf03-885db58b50a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_17d38b9a-949f-4a1c-bf03-885db58b50a6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_3ca3dec2-bfa8-44e4-a969-f85287ada1a0" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_57f74ab8-952c-44ec-9f84-4bb583270ea9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_57f74ab8-952c-44ec-9f84-4bb583270ea9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_57f74ab8-952c-44ec-9f84-4bb583270ea9_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_57f74ab8-952c-44ec-9f84-4bb583270ea9" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_57f74ab8-952c-44ec-9f84-4bb583270ea9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_851cd9fb-67e1-4ee6-8515-bcbb444a464e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_57f74ab8-952c-44ec-9f84-4bb583270ea9" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_851cd9fb-67e1-4ee6-8515-bcbb444a464e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MountainValleyPipelineLLCMember_4d9587b0-4529-436c-a21f-f686e2126645" xlink:href="ed-20221231.xsd#ed_MountainValleyPipelineLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_851cd9fb-67e1-4ee6-8515-bcbb444a464e" xlink:to="loc_ed_MountainValleyPipelineLLCMember_4d9587b0-4529-436c-a21f-f686e2126645" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkTranscoLLCMember_dd15cc46-f38f-48d3-90a8-655d6cd30284" xlink:href="ed-20221231.xsd#ed_NewYorkTranscoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_851cd9fb-67e1-4ee6-8515-bcbb444a464e" xlink:to="loc_ed_NewYorkTranscoLLCMember_dd15cc46-f38f-48d3-90a8-655d6cd30284" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_3af33f46-5c35-48df-a72b-4f6237021e46" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_3af33f46-5c35-48df-a72b-4f6237021e46" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_3af33f46-5c35-48df-a72b-4f6237021e46_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3af33f46-5c35-48df-a72b-4f6237021e46" xlink:to="loc_us-gaap_SegmentDomain_3af33f46-5c35-48df-a72b-4f6237021e46_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_0a33aeb4-1338-4a6b-8173-80ff9095e49f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3af33f46-5c35-48df-a72b-4f6237021e46" xlink:to="loc_us-gaap_SegmentDomain_0a33aeb4-1338-4a6b-8173-80ff9095e49f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_8d8b594b-0c40-4b66-87f6-704d25486768" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0a33aeb4-1338-4a6b-8173-80ff9095e49f" xlink:to="loc_ed_ConEdisonTransmissionMember_8d8b594b-0c40-4b66-87f6-704d25486768" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d299c8fe-565b-4982-a4db-8aa1ee05d4a9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:to="loc_dei_LegalEntityAxis_d299c8fe-565b-4982-a4db-8aa1ee05d4a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d299c8fe-565b-4982-a4db-8aa1ee05d4a9_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d299c8fe-565b-4982-a4db-8aa1ee05d4a9" xlink:to="loc_dei_EntityDomain_d299c8fe-565b-4982-a4db-8aa1ee05d4a9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6f131a1e-a2b6-42f0-9b8a-9c00aaf6c4ed" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d299c8fe-565b-4982-a4db-8aa1ee05d4a9" xlink:to="loc_dei_EntityDomain_6f131a1e-a2b6-42f0-9b8a-9c00aaf6c4ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_24bda686-8c6a-4476-b667-a7e2cdc21007" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6f131a1e-a2b6-42f0-9b8a-9c00aaf6c4ed" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_24bda686-8c6a-4476-b667-a7e2cdc21007" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonGasPipelineandStorageLLCMember_62fb00f2-bfb9-4b09-9118-5faf917dc054" xlink:href="ed-20221231.xsd#ed_ConEdisonGasPipelineandStorageLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6f131a1e-a2b6-42f0-9b8a-9c00aaf6c4ed" xlink:to="loc_ed_ConEdisonGasPipelineandStorageLLCMember_62fb00f2-bfb9-4b09-9118-5faf917dc054" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_0be77f4a-dede-4079-9651-c25adee6fb15" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:to="loc_srt_OwnershipAxis_0be77f4a-dede-4079-9651-c25adee6fb15" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_0be77f4a-dede-4079-9651-c25adee6fb15_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_0be77f4a-dede-4079-9651-c25adee6fb15" xlink:to="loc_srt_OwnershipDomain_0be77f4a-dede-4079-9651-c25adee6fb15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_109d834a-edfb-4799-8ff5-64d0941fc7ae" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_0be77f4a-dede-4079-9651-c25adee6fb15" xlink:to="loc_srt_OwnershipDomain_109d834a-edfb-4799-8ff5-64d0941fc7ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkTranscoLLCMember_9d3f2036-fcfa-4f4b-8761-f9b61b7a4dbc" xlink:href="ed-20221231.xsd#ed_NewYorkTranscoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_109d834a-edfb-4799-8ff5-64d0941fc7ae" xlink:to="loc_ed_NewYorkTranscoLLCMember_9d3f2036-fcfa-4f4b-8761-f9b61b7a4dbc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NYTranscoMember_f5556782-ba48-42a5-9ec6-e92ff9a674fd" xlink:href="ed-20221231.xsd#ed_NYTranscoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_109d834a-edfb-4799-8ff5-64d0941fc7ae" xlink:to="loc_ed_NYTranscoMember_f5556782-ba48-42a5-9ec6-e92ff9a674fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_c9f5defb-4a07-4fcc-838b-cb7d0579011c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_3881ea73-c031-4c58-96d5-95014fb517b9" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_c9f5defb-4a07-4fcc-838b-cb7d0579011c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_c9f5defb-4a07-4fcc-838b-cb7d0579011c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_c9f5defb-4a07-4fcc-838b-cb7d0579011c" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_c9f5defb-4a07-4fcc-838b-cb7d0579011c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_a8fd64cb-066b-416f-a01d-3cae73078d06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_c9f5defb-4a07-4fcc-838b-cb7d0579011c" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_a8fd64cb-066b-416f-a01d-3cae73078d06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PaymentGuaranteebyCETElectricofContributionstoNewYorkTranscoLLCMember_ff411ea6-4baa-4f41-a548-455de9f73a0a" xlink:href="ed-20221231.xsd#ed_PaymentGuaranteebyCETElectricofContributionstoNewYorkTranscoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_a8fd64cb-066b-416f-a01d-3cae73078d06" xlink:to="loc_ed_PaymentGuaranteebyCETElectricofContributionstoNewYorkTranscoLLCMember_ff411ea6-4baa-4f41-a548-455de9f73a0a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersResearchandDevelopmentCostsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersResearchandDevelopmentCostsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersResearchandDevelopmentCostsDetails" xlink:type="extended" id="i7550768f462f4552bf510f4740b2a108_SummaryofSignificantAccountingPoliciesandOtherMattersResearchandDevelopmentCostsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_ed_ResearchAndDevelopmentExpensesLineItems_399325f8-8ae2-41b5-a0a5-06ffbb4a0e7c" xlink:href="ed-20221231.xsd#ed_ResearchAndDevelopmentExpensesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_ca1c26fe-3397-4028-8dfb-c86cc77baf2e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_ResearchAndDevelopmentExpensesLineItems_399325f8-8ae2-41b5-a0a5-06ffbb4a0e7c" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_ca1c26fe-3397-4028-8dfb-c86cc77baf2e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ResearchAndDevelopmentExpensesTable_45da5bc8-3bcc-427f-b54f-f64b61be6394" xlink:href="ed-20221231.xsd#ed_ResearchAndDevelopmentExpensesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ed_ResearchAndDevelopmentExpensesLineItems_399325f8-8ae2-41b5-a0a5-06ffbb4a0e7c" xlink:to="loc_ed_ResearchAndDevelopmentExpensesTable_45da5bc8-3bcc-427f-b54f-f64b61be6394" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8427e6bd-29f3-4f2e-b91e-5f0467f9d3c2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ed_ResearchAndDevelopmentExpensesTable_45da5bc8-3bcc-427f-b54f-f64b61be6394" xlink:to="loc_dei_LegalEntityAxis_8427e6bd-29f3-4f2e-b91e-5f0467f9d3c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8427e6bd-29f3-4f2e-b91e-5f0467f9d3c2_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8427e6bd-29f3-4f2e-b91e-5f0467f9d3c2" xlink:to="loc_dei_EntityDomain_8427e6bd-29f3-4f2e-b91e-5f0467f9d3c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b4df45a1-f4b5-4ab4-a58f-0ec5c405043b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8427e6bd-29f3-4f2e-b91e-5f0467f9d3c2" xlink:to="loc_dei_EntityDomain_b4df45a1-f4b5-4ab4-a58f-0ec5c405043b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ff03b070-126c-46bb-8d5c-469878a9fc4b" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b4df45a1-f4b5-4ab4-a58f-0ec5c405043b" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ff03b070-126c-46bb-8d5c-469878a9fc4b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersChangesinAccumulatedOtherComprehensiveIncomeLossbyComponentDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersChangesinAccumulatedOtherComprehensiveIncomeLossbyComponentDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersChangesinAccumulatedOtherComprehensiveIncomeLossbyComponentDetails" xlink:type="extended" id="i2e6fcf40d9aa4251afe168087e2f3cb1_SummaryofSignificantAccountingPoliciesandOtherMattersChangesinAccumulatedOtherComprehensiveIncomeLossbyComponentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_476e15ac-fa22-44a0-905d-d92158643ee0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_476e15ac-fa22-44a0-905d-d92158643ee0" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_677439ac-e763-4309-a57b-31503102ad1b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_677439ac-e763-4309-a57b-31503102ad1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_ece48ef5-747e-4daa-9bfd-2f24855158b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:to="loc_us-gaap_StockholdersEquity_ece48ef5-747e-4daa-9bfd-2f24855158b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_34ee7925-bbe7-4313-a2d0-be4720a6a135" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_34ee7925-bbe7-4313-a2d0-be4720a6a135" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_682d68a4-75c4-46ec-b9a8-9faa2be369e4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_682d68a4-75c4-46ec-b9a8-9faa2be369e4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_41a465a5-770b-4939-83e0-3996021fb531" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_98ba8bbd-b0ed-4cff-a5fa-15509a515862" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_41a465a5-770b-4939-83e0-3996021fb531" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_102e4914-f330-4f3b-8c66-e8f0368fec35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_8dcca665-e783-4bb1-920e-f5a4f10e28dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_b97f6126-fbdd-4042-beb7-db8f5cf6bb35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_476e15ac-fa22-44a0-905d-d92158643ee0" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_b97f6126-fbdd-4042-beb7-db8f5cf6bb35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_1fd30b65-73f5-431d-bedc-d9d42f18f0b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_476e15ac-fa22-44a0-905d-d92158643ee0" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_1fd30b65-73f5-431d-bedc-d9d42f18f0b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d8cb6b27-6b27-4c46-9d65-795f28e64552" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_476e15ac-fa22-44a0-905d-d92158643ee0" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d8cb6b27-6b27-4c46-9d65-795f28e64552" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1b768830-ee58-4716-a70a-2c4e1f538207" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d8cb6b27-6b27-4c46-9d65-795f28e64552" xlink:to="loc_dei_LegalEntityAxis_1b768830-ee58-4716-a70a-2c4e1f538207" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1b768830-ee58-4716-a70a-2c4e1f538207_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1b768830-ee58-4716-a70a-2c4e1f538207" xlink:to="loc_dei_EntityDomain_1b768830-ee58-4716-a70a-2c4e1f538207_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9a1e99b5-58c7-46e7-b6c0-6a37184b902b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1b768830-ee58-4716-a70a-2c4e1f538207" xlink:to="loc_dei_EntityDomain_9a1e99b5-58c7-46e7-b6c0-6a37184b902b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_85d1846d-b3c4-4215-9d8a-b38c1a713e36" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9a1e99b5-58c7-46e7-b6c0-6a37184b902b" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_85d1846d-b3c4-4215-9d8a-b38c1a713e36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_73afb962-e1b1-4414-a2b4-7c4c38c0df81" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_d8cb6b27-6b27-4c46-9d65-795f28e64552" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_73afb962-e1b1-4414-a2b4-7c4c38c0df81" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_73afb962-e1b1-4414-a2b4-7c4c38c0df81_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_73afb962-e1b1-4414-a2b4-7c4c38c0df81" xlink:to="loc_us-gaap_EquityComponentDomain_73afb962-e1b1-4414-a2b4-7c4c38c0df81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_285c73a6-f44b-43a5-9459-aa46c4d3e1e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_73afb962-e1b1-4414-a2b4-7c4c38c0df81" xlink:to="loc_us-gaap_EquityComponentDomain_285c73a6-f44b-43a5-9459-aa46c4d3e1e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_b8737ca5-d41e-4f53-86d3-9bed4ae95fee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_285c73a6-f44b-43a5-9459-aa46c4d3e1e7" xlink:to="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_b8737ca5-d41e-4f53-86d3-9bed4ae95fee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_3ffff35b-94a7-4ec7-b058-c3f672068398" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_285c73a6-f44b-43a5-9459-aa46c4d3e1e7" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember_3ffff35b-94a7-4ec7-b058-c3f672068398" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_07586c2f-a125-4771-97fb-b3a80fba57bd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_285c73a6-f44b-43a5-9459-aa46c4d3e1e7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_07586c2f-a125-4771-97fb-b3a80fba57bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_d6137a51-32d7-47bc-9a7d-de170a06eba3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_285c73a6-f44b-43a5-9459-aa46c4d3e1e7" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_d6137a51-32d7-47bc-9a7d-de170a06eba3" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersReconciliationofCashTemporaryInvestmentsandRestrictedCashDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#SummaryofSignificantAccountingPoliciesandOtherMattersReconciliationofCashTemporaryInvestmentsandRestrictedCashDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/SummaryofSignificantAccountingPoliciesandOtherMattersReconciliationofCashTemporaryInvestmentsandRestrictedCashDetails" xlink:type="extended" id="i96eaaf96c0984e07a1973470cc6960f0_SummaryofSignificantAccountingPoliciesandOtherMattersReconciliationofCashTemporaryInvestmentsandRestrictedCashDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_d5e73c8c-2dc0-4631-98f8-a6d23a17ed01" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_ea0300ac-a6bf-4af8-b359-e3282a14d138" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_d5e73c8c-2dc0-4631-98f8-a6d23a17ed01" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_ea0300ac-a6bf-4af8-b359-e3282a14d138" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_3951afd3-e334-45f2-bafb-81aaa91ab1ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_d5e73c8c-2dc0-4631-98f8-a6d23a17ed01" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_3951afd3-e334-45f2-bafb-81aaa91ab1ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CashCashEquivalentsRestrictedCashExcludingHeldForSale_5409253d-135d-4ed1-815c-d7e6d786d570" xlink:href="ed-20221231.xsd#ed_CashCashEquivalentsRestrictedCashExcludingHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_d5e73c8c-2dc0-4631-98f8-a6d23a17ed01" xlink:to="loc_ed_CashCashEquivalentsRestrictedCashExcludingHeldForSale_5409253d-135d-4ed1-815c-d7e6d786d570" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_8b7ea29b-cad5-4c44-ae2f-452cf07fb8c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_d5e73c8c-2dc0-4631-98f8-a6d23a17ed01" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_8b7ea29b-cad5-4c44-ae2f-452cf07fb8c8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3a50a8f8-a675-4aa4-b374-29f404bab2d7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_8b7ea29b-cad5-4c44-ae2f-452cf07fb8c8" xlink:to="loc_dei_LegalEntityAxis_3a50a8f8-a675-4aa4-b374-29f404bab2d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3a50a8f8-a675-4aa4-b374-29f404bab2d7_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3a50a8f8-a675-4aa4-b374-29f404bab2d7" xlink:to="loc_dei_EntityDomain_3a50a8f8-a675-4aa4-b374-29f404bab2d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0f46c4eb-07a7-4f77-a0d5-08d15ff934ec" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3a50a8f8-a675-4aa4-b374-29f404bab2d7" xlink:to="loc_dei_EntityDomain_0f46c4eb-07a7-4f77-a0d5-08d15ff934ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f60cf8f7-cc0b-4a14-ba99-14dac86bfbc8" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0f46c4eb-07a7-4f77-a0d5-08d15ff934ec" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f60cf8f7-cc0b-4a14-ba99-14dac86bfbc8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralAxis_321028cc-73fa-4b1e-b48f-ec1f2cf171a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CollateralAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_8b7ea29b-cad5-4c44-ae2f-452cf07fb8c8" xlink:to="loc_us-gaap_CollateralAxis_321028cc-73fa-4b1e-b48f-ec1f2cf171a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralDomain_321028cc-73fa-4b1e-b48f-ec1f2cf171a7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CollateralDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CollateralAxis_321028cc-73fa-4b1e-b48f-ec1f2cf171a7" xlink:to="loc_us-gaap_CollateralDomain_321028cc-73fa-4b1e-b48f-ec1f2cf171a7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralDomain_c7f80510-97f1-4d2c-9b61-2b8c60f55416" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CollateralDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CollateralAxis_321028cc-73fa-4b1e-b48f-ec1f2cf171a7" xlink:to="loc_us-gaap_CollateralDomain_c7f80510-97f1-4d2c-9b61-2b8c60f55416" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CashCollateralHeldForProjectFinanceAgreementsMember_58fbaf6d-6e6f-4b92-ae5b-12c858a3aace" xlink:href="ed-20221231.xsd#ed_CashCollateralHeldForProjectFinanceAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CollateralDomain_c7f80510-97f1-4d2c-9b61-2b8c60f55416" xlink:to="loc_ed_CashCollateralHeldForProjectFinanceAgreementsMember_58fbaf6d-6e6f-4b92-ae5b-12c858a3aace" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_79f71342-e610-435f-81df-8e5533049042" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_8b7ea29b-cad5-4c44-ae2f-452cf07fb8c8" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_79f71342-e610-435f-81df-8e5533049042" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_79f71342-e610-435f-81df-8e5533049042_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_79f71342-e610-435f-81df-8e5533049042" xlink:to="loc_us-gaap_SegmentDomain_79f71342-e610-435f-81df-8e5533049042_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_4f06dada-8684-4266-8638-f4357d7e016c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_79f71342-e610-435f-81df-8e5533049042" xlink:to="loc_us-gaap_SegmentDomain_4f06dada-8684-4266-8638-f4357d7e016c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_0f654395-c1c3-48f9-ba57-22a0cf95c0d4" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_4f06dada-8684-4266-8638-f4357d7e016c" xlink:to="loc_ed_CleanEnergyBusinessesMember_0f654395-c1c3-48f9-ba57-22a0cf95c0d4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersUtilityRateNarrativeDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersUtilityRateNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersUtilityRateNarrativeDetails" xlink:type="extended" id="i4eb5c25de1614a17b7cec83c68a020aa_RegulatoryMattersUtilityRateNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilityRatePlanTerm_a836ca31-89a8-4e75-8a7b-a33198a2241e" xlink:href="ed-20221231.xsd#ed_PublicUtilityRatePlanTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_PublicUtilityRatePlanTerm_a836ca31-89a8-4e75-8a7b-a33198a2241e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_bf633ae7-0e5d-4940-b01b-868e9f5f8541" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_bf633ae7-0e5d-4940-b01b-868e9f5f8541" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage_dc1566d1-a27c-4748-bff2-dc14ddd017dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage_dc1566d1-a27c-4748-bff2-dc14ddd017dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_4c834f64-9931-4845-98cd-f8a367bba5b2" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_CommonEquityRatioPercentage_4c834f64-9931-4845-98cd-f8a367bba5b2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesDeviationOfActualInflationRateFromAssumedRevenueRequirementPercentage_a33d8ad6-18a6-4a5f-a4e0-169071819829" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesDeviationOfActualInflationRateFromAssumedRevenueRequirementPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_PublicUtilitiesDeviationOfActualInflationRateFromAssumedRevenueRequirementPercentage_a33d8ad6-18a6-4a5f-a4e0-169071819829" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesTotalRequestedAmount_4d4b858a-a568-4748-911f-e3c38fae82de" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesTotalRequestedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_PublicUtilitiesTotalRequestedAmount_4d4b858a-a568-4748-911f-e3c38fae82de" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NumberOfSubstations_98bf8166-1098-484a-846d-9e0b87ca3800" xlink:href="ed-20221231.xsd#ed_NumberOfSubstations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_NumberOfSubstations_98bf8166-1098-484a-846d-9e0b87ca3800" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAdditions_987fbe18-3109-4f66-87ee-101f68c74d2b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAdditions_987fbe18-3109-4f66-87ee-101f68c74d2b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MinimumNumberOfDaysAfterAdoptionOfJointProposalToPetition_588b4152-9620-4bc4-b315-7b009d7a058e" xlink:href="ed-20221231.xsd#ed_MinimumNumberOfDaysAfterAdoptionOfJointProposalToPetition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_MinimumNumberOfDaysAfterAdoptionOfJointProposalToPetition_588b4152-9620-4bc4-b315-7b009d7a058e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesInfrastructureInvestmentPlan_ab36411a-6ac7-4d5b-8d46-cd5409878657" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesInfrastructureInvestmentPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_PublicUtilitiesInfrastructureInvestmentPlan_ab36411a-6ac7-4d5b-8d46-cd5409878657" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesInfrastructureInvestmentPlanPeriod_c79b828b-b02f-4198-afea-942e44e8d7eb" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesInfrastructureInvestmentPlanPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_ed_PublicUtilitiesInfrastructureInvestmentPlanPeriod_c79b828b-b02f-4198-afea-942e44e8d7eb" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_47835f37-d9df-4717-b803-de253f9e884a" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_7c6065b8-af88-458d-8054-6f84569921fa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_7c6065b8-af88-458d-8054-6f84569921fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_7c6065b8-af88-458d-8054-6f84569921fa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_7c6065b8-af88-458d-8054-6f84569921fa" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_7c6065b8-af88-458d-8054-6f84569921fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_1576b61a-253f-4b12-a551-47f9a91fd5f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_7c6065b8-af88-458d-8054-6f84569921fa" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_1576b61a-253f-4b12-a551-47f9a91fd5f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_8de42672-08c8-47eb-a360-2153b70c97fb" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_1576b61a-253f-4b12-a551-47f9a91fd5f3" xlink:to="loc_ed_RatePlanforYear1Member_8de42672-08c8-47eb-a360-2153b70c97fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_aeec7dcc-779e-4d91-bc07-fc36dd471897" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_1576b61a-253f-4b12-a551-47f9a91fd5f3" xlink:to="loc_ed_RatePlanforYear2Member_aeec7dcc-779e-4d91-bc07-fc36dd471897" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear3Member_07ed5cb1-aef8-426d-8e07-3a3319a18320" xlink:href="ed-20221231.xsd#ed_RatePlanforYear3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_1576b61a-253f-4b12-a551-47f9a91fd5f3" xlink:to="loc_ed_RatePlanforYear3Member_07ed5cb1-aef8-426d-8e07-3a3319a18320" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_73fb6bcd-c38d-425d-acbd-58d015d951e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_us-gaap_PublicUtilityAxis_73fb6bcd-c38d-425d-acbd-58d015d951e7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_73fb6bcd-c38d-425d-acbd-58d015d951e7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_73fb6bcd-c38d-425d-acbd-58d015d951e7" xlink:to="loc_us-gaap_UtilityPlantDomain_73fb6bcd-c38d-425d-acbd-58d015d951e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_4a74d0cc-f109-44c3-b8fb-d3e6bf59fac7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_73fb6bcd-c38d-425d-acbd-58d015d951e7" xlink:to="loc_us-gaap_UtilityPlantDomain_4a74d0cc-f109-44c3-b8fb-d3e6bf59fac7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_b5c2859e-01f7-4dc7-a6c1-bdd837b51840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_4a74d0cc-f109-44c3-b8fb-d3e6bf59fac7" xlink:to="loc_us-gaap_ElectricTransmissionMember_b5c2859e-01f7-4dc7-a6c1-bdd837b51840" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SteamMember_e231ca18-34c1-4b69-a539-aa7408719ab1" xlink:href="ed-20221231.xsd#ed_SteamMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_4a74d0cc-f109-44c3-b8fb-d3e6bf59fac7" xlink:to="loc_ed_SteamMember_e231ca18-34c1-4b69-a539-aa7408719ab1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricAndGasTransmissionProjectsMember_ccc37a44-595a-413a-8f8d-35a3e42e3897" xlink:href="ed-20221231.xsd#ed_ElectricAndGasTransmissionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_4a74d0cc-f109-44c3-b8fb-d3e6bf59fac7" xlink:to="loc_ed_ElectricAndGasTransmissionProjectsMember_ccc37a44-595a-413a-8f8d-35a3e42e3897" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8baa1011-7a43-4efa-ab98-65b0c3a2aae5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_dei_LegalEntityAxis_8baa1011-7a43-4efa-ab98-65b0c3a2aae5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8baa1011-7a43-4efa-ab98-65b0c3a2aae5_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8baa1011-7a43-4efa-ab98-65b0c3a2aae5" xlink:to="loc_dei_EntityDomain_8baa1011-7a43-4efa-ab98-65b0c3a2aae5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4acf63e8-7a75-4caa-897f-cdda95881119" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8baa1011-7a43-4efa-ab98-65b0c3a2aae5" xlink:to="loc_dei_EntityDomain_4acf63e8-7a75-4caa-897f-cdda95881119" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_de828b73-3180-4c2b-b86d-318198e1696d" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4acf63e8-7a75-4caa-897f-cdda95881119" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_de828b73-3180-4c2b-b86d-318198e1696d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RocklandElectricCompanyMember_00cbd587-1782-48ae-b38a-cf8c3d686fab" xlink:href="ed-20221231.xsd#ed_RocklandElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4acf63e8-7a75-4caa-897f-cdda95881119" xlink:to="loc_ed_RocklandElectricCompanyMember_00cbd587-1782-48ae-b38a-cf8c3d686fab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_b8048adc-f554-4a72-9543-a91b25469ece" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4acf63e8-7a75-4caa-897f-cdda95881119" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_b8048adc-f554-4a72-9543-a91b25469ece" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_5edc9d7e-16cf-4929-ae80-9a653320c7f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_5edc9d7e-16cf-4929-ae80-9a653320c7f1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_5edc9d7e-16cf-4929-ae80-9a653320c7f1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_5edc9d7e-16cf-4929-ae80-9a653320c7f1" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_5edc9d7e-16cf-4929-ae80-9a653320c7f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_281f7d4f-83de-4b2e-99ce-0cbd4283db4d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_5edc9d7e-16cf-4929-ae80-9a653320c7f1" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_281f7d4f-83de-4b2e-99ce-0cbd4283db4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewJerseyBoardOfPublicUtilitiesMember_213aa852-5ad2-40b1-ae94-56b018371cba" xlink:href="ed-20221231.xsd#ed_NewJerseyBoardOfPublicUtilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_281f7d4f-83de-4b2e-99ce-0cbd4283db4d" xlink:to="loc_ed_NewJerseyBoardOfPublicUtilitiesMember_213aa852-5ad2-40b1-ae94-56b018371cba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_4a575af3-c694-4fab-9715-465cdf4c49e2" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_281f7d4f-83de-4b2e-99ce-0cbd4283db4d" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_4a575af3-c694-4fab-9715-465cdf4c49e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_a8dacca4-e9ea-462f-b648-c2e7f251687c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_srt_ConsolidatedEntitiesAxis_a8dacca4-e9ea-462f-b648-c2e7f251687c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_a8dacca4-e9ea-462f-b648-c2e7f251687c_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a8dacca4-e9ea-462f-b648-c2e7f251687c" xlink:to="loc_srt_ConsolidatedEntitiesDomain_a8dacca4-e9ea-462f-b648-c2e7f251687c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_f408a720-b146-4e3f-ae2c-c4b36165d7a2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a8dacca4-e9ea-462f-b648-c2e7f251687c" xlink:to="loc_srt_ConsolidatedEntitiesDomain_f408a720-b146-4e3f-ae2c-c4b36165d7a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_eb018c9c-8191-4fd4-ba56-1fd672d10a81" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_f408a720-b146-4e3f-ae2c-c4b36165d7a2" xlink:to="loc_srt_SubsidiariesMember_eb018c9c-8191-4fd4-ba56-1fd672d10a81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_752dd5b7-a3d9-41b5-a4f2-5ac38151a7d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_752dd5b7-a3d9-41b5-a4f2-5ac38151a7d7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_752dd5b7-a3d9-41b5-a4f2-5ac38151a7d7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_752dd5b7-a3d9-41b5-a4f2-5ac38151a7d7" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_752dd5b7-a3d9-41b5-a4f2-5ac38151a7d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_515079e0-74f7-4954-bf69-1d5e39733ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_752dd5b7-a3d9-41b5-a4f2-5ac38151a7d7" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_515079e0-74f7-4954-bf69-1d5e39733ff5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_205a377b-2f0b-40f8-a12e-cc495f83953c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_515079e0-74f7-4954-bf69-1d5e39733ff5" xlink:to="loc_us-gaap_SubsequentEventMember_205a377b-2f0b-40f8-a12e-cc495f83953c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_7a1c4366-74cc-4539-b77a-ebe62d897abe" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_srt_StatementScenarioAxis_7a1c4366-74cc-4539-b77a-ebe62d897abe" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_7a1c4366-74cc-4539-b77a-ebe62d897abe_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_7a1c4366-74cc-4539-b77a-ebe62d897abe" xlink:to="loc_srt_ScenarioUnspecifiedDomain_7a1c4366-74cc-4539-b77a-ebe62d897abe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_4daa4fe8-922d-4fee-ad85-2cc90ec0acb7" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_7a1c4366-74cc-4539-b77a-ebe62d897abe" xlink:to="loc_srt_ScenarioUnspecifiedDomain_4daa4fe8-922d-4fee-ad85-2cc90ec0acb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_334d5704-7836-4ac8-baa9-65b84247a83b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_4daa4fe8-922d-4fee-ad85-2cc90ec0acb7" xlink:to="loc_srt_ScenarioForecastMember_334d5704-7836-4ac8-baa9-65b84247a83b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_82337d4b-d9af-49db-ae7d-d7f65098a7b3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_82337d4b-d9af-49db-ae7d-d7f65098a7b3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_82337d4b-d9af-49db-ae7d-d7f65098a7b3_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_82337d4b-d9af-49db-ae7d-d7f65098a7b3" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_82337d4b-d9af-49db-ae7d-d7f65098a7b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_f5777c65-634a-4224-8be1-db6232185474" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_82337d4b-d9af-49db-ae7d-d7f65098a7b3" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_f5777c65-634a-4224-8be1-db6232185474" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EasternQueensReliabilityProjectMember_05a4b7d0-b529-442e-81ed-4917fdffdcf9" xlink:href="ed-20221231.xsd#ed_EasternQueensReliabilityProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_f5777c65-634a-4224-8be1-db6232185474" xlink:to="loc_ed_EasternQueensReliabilityProjectMember_05a4b7d0-b529-442e-81ed-4917fdffdcf9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_d97cd0ee-8b28-4a17-9548-88d6e98f54ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_309d604f-58b6-49a6-9f0a-9085f83ed215" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_d97cd0ee-8b28-4a17-9548-88d6e98f54ed" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d97cd0ee-8b28-4a17-9548-88d6e98f54ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_d97cd0ee-8b28-4a17-9548-88d6e98f54ed" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d97cd0ee-8b28-4a17-9548-88d6e98f54ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_469ced81-078e-4269-b537-3236cc8dcab4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_d97cd0ee-8b28-4a17-9548-88d6e98f54ed" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_469ced81-078e-4269-b537-3236cc8dcab4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SubstationMember_5d994271-08f5-4172-9d2f-aff394302929" xlink:href="ed-20221231.xsd#ed_SubstationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_469ced81-078e-4269-b537-3236cc8dcab4" xlink:to="loc_ed_SubstationMember_5d994271-08f5-4172-9d2f-aff394302929" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansCECONYElectricDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersSummaryofUtilitiesRatePlansCECONYElectricDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansCECONYElectricDetails" xlink:type="extended" id="id89f3943f93844e4b5bf4037f5116f6f_RegulatoryMattersSummaryofUtilitiesRatePlansCECONYElectricDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantandEquipmentRateBaseAdjustments_eeff093f-795d-46fd-9c21-a12c09574548" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantandEquipmentRateBaseAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesPropertyPlantandEquipmentRateBaseAdjustments_eeff093f-795d-46fd-9c21-a12c09574548" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_6191020a-ebcf-4722-ba1e-1716ba038108" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_6191020a-ebcf-4722-ba1e-1716ba038108" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RetentionOfAnnualTransmissionCongestionRevenues_e7978232-f8bc-4dc5-8a7f-3c312b03c277" xlink:href="ed-20221231.xsd#ed_RetentionOfAnnualTransmissionCongestionRevenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_RetentionOfAnnualTransmissionCongestionRevenues_e7978232-f8bc-4dc5-8a7f-3c312b03c277" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_7c8c410b-9210-4215-ad1d-18a9fba375a9" xlink:href="ed-20221231.xsd#ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_7c8c410b-9210-4215-ad1d-18a9fba375a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismIncentiveRevenue_174a4a6f-0734-4a05-9186-f0e5a0382b9f" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_EarningsAdjustmentMechanismIncentiveRevenue_174a4a6f-0734-4a05-9186-f0e5a0382b9f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_c38193e0-ba94-4fb2-b948-807d9d4b3aaf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_ContractWithCustomerLiability_c38193e0-ba94-4fb2-b948-807d9d4b3aaf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialPenaltyExpense_fc4abcd8-d277-41ea-8468-f72dcd28abd7" xlink:href="ed-20221231.xsd#ed_PotentialPenaltyExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PotentialPenaltyExpense_fc4abcd8-d277-41ea-8468-f72dcd28abd7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_ef7f2067-e475-4e4e-947f-5415ddc8d6ed" xlink:href="ed-20221231.xsd#ed_ImpactOnEarningsHadLagPeriodBeenAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_ef7f2067-e475-4e4e-947f-5415ddc8d6ed" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_6d6092c0-6e36-4e0e-ba6b-c731da664a4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_6d6092c0-6e36-4e0e-ba6b-c731da664a4a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AverageNetUtilityPlantRates_7a5c7d3c-b9fb-4e54-b7e4-b7bd1c0db729" xlink:href="ed-20221231.xsd#ed_AverageNetUtilityPlantRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_AverageNetUtilityPlantRates_7a5c7d3c-b9fb-4e54-b7e4-b7bd1c0db729" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredRegulatoryAssetLiability_18840a0f-883d-4a09-913e-44425bc14941" xlink:href="ed-20221231.xsd#ed_DeferredRegulatoryAssetLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_DeferredRegulatoryAssetLiability_18840a0f-883d-4a09-913e-44425bc14941" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryMattersAverageBaseRate_e34be537-d32a-4433-9b21-4a48a2147a87" xlink:href="ed-20221231.xsd#ed_RegulatoryMattersAverageBaseRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_RegulatoryMattersAverageBaseRate_e34be537-d32a-4433-9b21-4a48a2147a87" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageCostOfCapital_c30db6d4-4df1-4dec-9054-42c309997117" xlink:href="ed-20221231.xsd#ed_WeightedAverageCostOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_WeightedAverageCostOfCapital_c30db6d4-4df1-4dec-9054-42c309997117" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_d22b4fcd-3aa1-4a9f-b1ca-da56d21f47a3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_d22b4fcd-3aa1-4a9f-b1ca-da56d21f47a3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesReturnonEquityPercentage_5888f529-c471-49ea-ac54-8d224eb3ea7f" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesReturnonEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesReturnonEquityPercentage_5888f529-c471-49ea-ac54-8d224eb3ea7f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueRequirementEarningsPercentage_06146ac1-8e96-4229-b4e0-6892c69c661f" xlink:href="ed-20221231.xsd#ed_RevenueRequirementEarningsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_RevenueRequirementEarningsPercentage_06146ac1-8e96-4229-b4e0-6892c69c661f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingThresholdLimit_b2198ff6-a57f-4018-a465-c80210186f4a" xlink:href="ed-20221231.xsd#ed_RevenueSharingThresholdLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_RevenueSharingThresholdLimit_b2198ff6-a57f-4018-a465-c80210186f4a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingAdjustment_13e8a78b-fd20-4ead-b6b3-263b0cbd414e" xlink:href="ed-20221231.xsd#ed_RevenueSharingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_RevenueSharingAdjustment_13e8a78b-fd20-4ead-b6b3-263b0cbd414e" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_cba398b4-50cc-45bc-98c8-1d9dff9554fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtPercentageBearingVariableInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_cba398b4-50cc-45bc-98c8-1d9dff9554fe" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_4356daee-dc66-4feb-833c-57d0ef653c32" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_CommonEquityRatioPercentage_4356daee-dc66-4feb-833c-57d0ef653c32" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_968107d4-486d-402d-a7cd-c013e40496ae" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_968107d4-486d-402d-a7cd-c013e40496ae" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforDebtCapitalStructurePercentage_7986ba45-c51e-4685-a053-ace20339e45a" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforDebtCapitalStructurePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforDebtCapitalStructurePercentage_7986ba45-c51e-4685-a053-ace20339e45a" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesEnergyandEfficiencySavingsProgramRecoveryCosts_45647d4c-1f7a-48d6-855f-8c2f513a634e" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesEnergyandEfficiencySavingsProgramRecoveryCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesEnergyandEfficiencySavingsProgramRecoveryCosts_45647d4c-1f7a-48d6-855f-8c2f513a634e" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryCostsDeferralPeriodTwo_e6d35f63-7671-45cf-8245-4cc722f3db6e" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryCostsDeferralPeriodTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesRecoveryCostsDeferralPeriodTwo_e6d35f63-7671-45cf-8245-4cc722f3db6e" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017IncomeTaxCredit_1537ec9e-e07e-4854-a6d0-fab1854bf89e" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017IncomeTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_TaxCutsAndJobsActOf2017IncomeTaxCredit_1537ec9e-e07e-4854-a6d0-fab1854bf89e" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit_9983943d-b39e-46d2-94af-594ba790a92a" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit_9983943d-b39e-46d2-94af-594ba790a92a" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefitAmortizationPeriod_761645e4-fa66-4944-ade2-9ee7fdce7394" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefitAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefitAmortizationPeriod_761645e4-fa66-4944-ade2-9ee7fdce7394" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRate_a24467c6-f0fe-457a-94e3-3748aaf3a047" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRate_a24467c6-f0fe-457a-94e3-3748aaf3a047" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_78daed42-08b9-4fa1-a04b-08bd4357b170" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_78daed42-08b9-4fa1-a04b-08bd4357b170" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryDeferralPercentage_f63de710-bd6b-4130-b84b-1292bd56a146" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryDeferralPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesRecoveryDeferralPercentage_f63de710-bd6b-4130-b84b-1292bd56a146" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesMaximumDeferralPercentage_72c2244a-0881-4adf-9e60-409ff65af017" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesMaximumDeferralPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesMaximumDeferralPercentage_72c2244a-0881-4adf-9e60-409ff65af017" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_3b4b332d-6b19-4655-8f38-44bb88c507c3" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_3b4b332d-6b19-4655-8f38-44bb88c507c3" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_3f23b6c5-0652-49d1-a458-9ee22cfb89eb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_3f23b6c5-0652-49d1-a458-9ee22cfb89eb" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_c4ec3d2c-0d12-4f2c-bd88-dffe85bbed5a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_Revenues_c4ec3d2c-0d12-4f2c-bd88-dffe85bbed5a" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_acd14ff8-8979-4d17-90aa-4e8327d0f77a" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_b1c9a1bf-30dd-4702-be79-95ec67faeb44" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_b1c9a1bf-30dd-4702-be79-95ec67faeb44" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_b1c9a1bf-30dd-4702-be79-95ec67faeb44_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_b1c9a1bf-30dd-4702-be79-95ec67faeb44" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_b1c9a1bf-30dd-4702-be79-95ec67faeb44_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_454a080b-45c6-4e72-8cf0-78de0d00f523" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_b1c9a1bf-30dd-4702-be79-95ec67faeb44" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_454a080b-45c6-4e72-8cf0-78de0d00f523" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProtectedPortionMember_3d92a6f3-1567-4e15-9f56-21f53f980779" xlink:href="ed-20221231.xsd#ed_ProtectedPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_454a080b-45c6-4e72-8cf0-78de0d00f523" xlink:to="loc_ed_ProtectedPortionMember_3d92a6f3-1567-4e15-9f56-21f53f980779" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnprotectedPortionMember_7fdfead7-1983-47a5-8a16-d10cc251cc5c" xlink:href="ed-20221231.xsd#ed_UnprotectedPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_454a080b-45c6-4e72-8cf0-78de0d00f523" xlink:to="loc_ed_UnprotectedPortionMember_7fdfead7-1983-47a5-8a16-d10cc251cc5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodAxis_751cdd76-8d36-4738-91fe-a5e81016cf23" xlink:href="ed-20221231.xsd#ed_PeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_ed_PeriodAxis_751cdd76-8d36-4738-91fe-a5e81016cf23" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodDomain_751cdd76-8d36-4738-91fe-a5e81016cf23_default" xlink:href="ed-20221231.xsd#ed_PeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_PeriodAxis_751cdd76-8d36-4738-91fe-a5e81016cf23" xlink:to="loc_ed_PeriodDomain_751cdd76-8d36-4738-91fe-a5e81016cf23_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:href="ed-20221231.xsd#ed_PeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_PeriodAxis_751cdd76-8d36-4738-91fe-a5e81016cf23" xlink:to="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AnnuallyMember_aa10a240-9d56-469d-9341-3df6d82da235" xlink:href="ed-20221231.xsd#ed_AnnuallyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:to="loc_ed_AnnuallyMember_aa10a240-9d56-469d-9341-3df6d82da235" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverFiveYearsMember_604bca47-3faa-4120-afa3-b3a70f81351a" xlink:href="ed-20221231.xsd#ed_OverFiveYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:to="loc_ed_OverFiveYearsMember_604bca47-3faa-4120-afa3-b3a70f81351a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverThreeYearsMember_d9b58097-58fc-4e46-a3b2-3747523a6cd4" xlink:href="ed-20221231.xsd#ed_OverThreeYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:to="loc_ed_OverThreeYearsMember_d9b58097-58fc-4e46-a3b2-3747523a6cd4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverTwoYearsMember_b3a538b5-2916-4cca-8f23-422acaf14133" xlink:href="ed-20221231.xsd#ed_OverTwoYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:to="loc_ed_OverTwoYearsMember_b3a538b5-2916-4cca-8f23-422acaf14133" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SevenToFifteenYearsMember_e0445902-dca5-43de-bd53-afc15fa90ef3" xlink:href="ed-20221231.xsd#ed_SevenToFifteenYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_352af8f9-e25b-44f2-b0ca-273fc787a191" xlink:to="loc_ed_SevenToFifteenYearsMember_e0445902-dca5-43de-bd53-afc15fa90ef3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0cc17610-121d-4b8e-9d00-8efb3e64def6" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_dei_LegalEntityAxis_0cc17610-121d-4b8e-9d00-8efb3e64def6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0cc17610-121d-4b8e-9d00-8efb3e64def6_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0cc17610-121d-4b8e-9d00-8efb3e64def6" xlink:to="loc_dei_EntityDomain_0cc17610-121d-4b8e-9d00-8efb3e64def6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5b985520-d93c-46b6-a2c9-fc89b9e20f4e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0cc17610-121d-4b8e-9d00-8efb3e64def6" xlink:to="loc_dei_EntityDomain_5b985520-d93c-46b6-a2c9-fc89b9e20f4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f5178407-0e0f-46d6-aa19-9a6e9f2d9207" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5b985520-d93c-46b6-a2c9-fc89b9e20f4e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f5178407-0e0f-46d6-aa19-9a6e9f2d9207" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_669bbf36-9ec4-490a-8f73-a2337f1d4cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_us-gaap_PublicUtilityAxis_669bbf36-9ec4-490a-8f73-a2337f1d4cd7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_669bbf36-9ec4-490a-8f73-a2337f1d4cd7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_669bbf36-9ec4-490a-8f73-a2337f1d4cd7" xlink:to="loc_us-gaap_UtilityPlantDomain_669bbf36-9ec4-490a-8f73-a2337f1d4cd7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_fc707c14-a4db-45a5-8bf5-a2d9d7a5a168" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_669bbf36-9ec4-490a-8f73-a2337f1d4cd7" xlink:to="loc_us-gaap_UtilityPlantDomain_fc707c14-a4db-45a5-8bf5-a2d9d7a5a168" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_4a55b26a-33b4-4645-9fce-ba1a3b3fc473" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_fc707c14-a4db-45a5-8bf5-a2d9d7a5a168" xlink:to="loc_us-gaap_ElectricTransmissionMember_4a55b26a-33b4-4645-9fce-ba1a3b3fc473" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_eae08402-0d13-4c61-8800-3c30e270c875" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_eae08402-0d13-4c61-8800-3c30e270c875" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_eae08402-0d13-4c61-8800-3c30e270c875_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_eae08402-0d13-4c61-8800-3c30e270c875" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_eae08402-0d13-4c61-8800-3c30e270c875_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_90d173cf-3cdb-45ab-8f33-412f50cf06a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_eae08402-0d13-4c61-8800-3c30e270c875" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_90d173cf-3cdb-45ab-8f33-412f50cf06a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_68b1fd43-c8cf-4e83-93ea-d53c3687a66d" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_90d173cf-3cdb-45ab-8f33-412f50cf06a9" xlink:to="loc_ed_RatePlanforYear1Member_68b1fd43-c8cf-4e83-93ea-d53c3687a66d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_7866510f-5438-4b48-a596-7c9d0b38eb54" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_90d173cf-3cdb-45ab-8f33-412f50cf06a9" xlink:to="loc_ed_RatePlanforYear2Member_7866510f-5438-4b48-a596-7c9d0b38eb54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear3Member_86a0ff80-7f83-4420-8151-5f53a0fb3b47" xlink:href="ed-20221231.xsd#ed_RatePlanforYear3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_90d173cf-3cdb-45ab-8f33-412f50cf06a9" xlink:to="loc_ed_RatePlanforYear3Member_86a0ff80-7f83-4420-8151-5f53a0fb3b47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_cc17b259-5420-4f30-9ea6-75c204f7a77e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_us-gaap_RegulatoryAssetAxis_cc17b259-5420-4f30-9ea6-75c204f7a77e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_cc17b259-5420-4f30-9ea6-75c204f7a77e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_cc17b259-5420-4f30-9ea6-75c204f7a77e" xlink:to="loc_us-gaap_RegulatoryAssetDomain_cc17b259-5420-4f30-9ea6-75c204f7a77e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_2ff6621c-2896-4a2d-a674-4ba9ef8500a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_cc17b259-5420-4f30-9ea6-75c204f7a77e" xlink:to="loc_us-gaap_RegulatoryAssetDomain_2ff6621c-2896-4a2d-a674-4ba9ef8500a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredProjectCostsMember_590e4c30-d9d8-41aa-839e-7470958fae9b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredProjectCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_2ff6621c-2896-4a2d-a674-4ba9ef8500a9" xlink:to="loc_us-gaap_DeferredProjectCostsMember_590e4c30-d9d8-41aa-839e-7470958fae9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricExcludingAMIMember_cf43704e-593f-4d25-a646-73c56c700f3c" xlink:href="ed-20221231.xsd#ed_ElectricExcludingAMIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_2ff6621c-2896-4a2d-a674-4ba9ef8500a9" xlink:to="loc_ed_ElectricExcludingAMIMember_cf43704e-593f-4d25-a646-73c56c700f3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_3a08d327-a872-4343-9162-fa614e0c6a69" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvancedMeteringInfrastructureCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_2ff6621c-2896-4a2d-a674-4ba9ef8500a9" xlink:to="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_3a08d327-a872-4343-9162-fa614e0c6a69" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CustomerServiceSystemsCSSMember_a74fbc60-dee0-448c-9e40-622797055865" xlink:href="ed-20221231.xsd#ed_CustomerServiceSystemsCSSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_2ff6621c-2896-4a2d-a674-4ba9ef8500a9" xlink:to="loc_ed_CustomerServiceSystemsCSSMember_a74fbc60-dee0-448c-9e40-622797055865" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_545f540b-606a-4c5c-9361-35d04353a25f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_545f540b-606a-4c5c-9361-35d04353a25f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_545f540b-606a-4c5c-9361-35d04353a25f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_545f540b-606a-4c5c-9361-35d04353a25f" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_545f540b-606a-4c5c-9361-35d04353a25f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_83fdcc13-a1eb-4105-b3ce-fa4c033bbe3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_545f540b-606a-4c5c-9361-35d04353a25f" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_83fdcc13-a1eb-4105-b3ce-fa4c033bbe3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_abb5a44f-bde0-431a-88e1-595e66067432" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_83fdcc13-a1eb-4105-b3ce-fa4c033bbe3b" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_abb5a44f-bde0-431a-88e1-595e66067432" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_816e1a67-7753-4745-9aa6-c964700b62da" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_srt_StatementScenarioAxis_816e1a67-7753-4745-9aa6-c964700b62da" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_816e1a67-7753-4745-9aa6-c964700b62da_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_816e1a67-7753-4745-9aa6-c964700b62da" xlink:to="loc_srt_ScenarioUnspecifiedDomain_816e1a67-7753-4745-9aa6-c964700b62da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_facb6df8-e149-4ae5-9eee-4a2348550480" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_816e1a67-7753-4745-9aa6-c964700b62da" xlink:to="loc_srt_ScenarioUnspecifiedDomain_facb6df8-e149-4ae5-9eee-4a2348550480" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_b4abec3a-49e3-46f4-88fd-dbaffdf99afa" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_facb6df8-e149-4ae5-9eee-4a2348550480" xlink:to="loc_srt_ScenarioForecastMember_b4abec3a-49e3-46f4-88fd-dbaffdf99afa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_27d19658-21f7-4e22-865b-9a2a788771f6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_srt_RangeAxis_27d19658-21f7-4e22-865b-9a2a788771f6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_27d19658-21f7-4e22-865b-9a2a788771f6_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_27d19658-21f7-4e22-865b-9a2a788771f6" xlink:to="loc_srt_RangeMember_27d19658-21f7-4e22-865b-9a2a788771f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_aa0ec8cb-8440-4b0b-931f-238c821be596" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_27d19658-21f7-4e22-865b-9a2a788771f6" xlink:to="loc_srt_RangeMember_aa0ec8cb-8440-4b0b-931f-238c821be596" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_2aa050e6-89d4-4676-845d-29b3f1c57f60" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_aa0ec8cb-8440-4b0b-931f-238c821be596" xlink:to="loc_srt_MaximumMember_2aa050e6-89d4-4676-845d-29b3f1c57f60" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_15b349e6-be5e-4e2d-9a3c-c2c81f297d5c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_4c493a61-264e-4d9d-b2ce-2595ef8709ce" xlink:to="loc_srt_ProductOrServiceAxis_15b349e6-be5e-4e2d-9a3c-c2c81f297d5c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_15b349e6-be5e-4e2d-9a3c-c2c81f297d5c_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_15b349e6-be5e-4e2d-9a3c-c2c81f297d5c" xlink:to="loc_srt_ProductsAndServicesDomain_15b349e6-be5e-4e2d-9a3c-c2c81f297d5c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_83d5036e-e74d-4069-be76-3a8cbe16fcd0" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_15b349e6-be5e-4e2d-9a3c-c2c81f297d5c" xlink:to="loc_srt_ProductsAndServicesDomain_83d5036e-e74d-4069-be76-3a8cbe16fcd0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LeaksAndServiceTerminationsMember_68d06271-510b-41e9-a732-e23d81a93b88" xlink:href="ed-20221231.xsd#ed_LeaksAndServiceTerminationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_83d5036e-e74d-4069-be76-3a8cbe16fcd0" xlink:to="loc_ed_LeaksAndServiceTerminationsMember_68d06271-510b-41e9-a732-e23d81a93b88" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansCECONYGasDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersSummaryofUtilitiesRatePlansCECONYGasDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansCECONYGasDetails" xlink:type="extended" id="i10b8939bbdf146d79f01c06f05b03f37_RegulatoryMattersSummaryofUtilitiesRatePlansCECONYGasDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BaseRateIncreaseDecrease_9753d513-2f69-4bf3-a3b2-ec693d943d28" xlink:href="ed-20221231.xsd#ed_BaseRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_BaseRateIncreaseDecrease_9753d513-2f69-4bf3-a3b2-ec693d943d28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_b50c5790-21a5-4d0a-a4f2-f740fddcc67c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_b50c5790-21a5-4d0a-a4f2-f740fddcc67c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAppropriated_ed6f68c4-65ab-47b9-b1d6-f37a9599f8eb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAppropriated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_RetainedEarningsAppropriated_ed6f68c4-65ab-47b9-b1d6-f37a9599f8eb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PercentageofRevenueReserve_cdcd6877-a79e-4596-89c3-8492cb4d5a11" xlink:href="ed-20221231.xsd#ed_PercentageofRevenueReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PercentageofRevenueReserve_cdcd6877-a79e-4596-89c3-8492cb4d5a11" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_165d09cb-f3fe-4ae6-afda-594cec575428" xlink:href="ed-20221231.xsd#ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_165d09cb-f3fe-4ae6-afda-594cec575428" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherIncentiveRevenue_4a0b5d0b-d75f-4389-b7e0-a99485cdcfc5" xlink:href="ed-20221231.xsd#ed_OtherIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_OtherIncentiveRevenue_4a0b5d0b-d75f-4389-b7e0-a99485cdcfc5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_6239fbe6-5781-4223-88e6-5e13362a3509" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_Revenues_6239fbe6-5781-4223-88e6-5e13362a3509" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismIncentiveRevenueReversed_bc4dc9f1-23f9-4c34-ad3a-3403353f9f88" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismIncentiveRevenueReversed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_EarningsAdjustmentMechanismIncentiveRevenueReversed_bc4dc9f1-23f9-4c34-ad3a-3403353f9f88" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_72b2b350-ae7b-43fb-9de2-fbc0759c4dd2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_ContractWithCustomerLiability_72b2b350-ae7b-43fb-9de2-fbc0759c4dd2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialPenaltyExpense_28c828e8-327c-4c18-8232-65322a2ef2a8" xlink:href="ed-20221231.xsd#ed_PotentialPenaltyExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PotentialPenaltyExpense_28c828e8-327c-4c18-8232-65322a2ef2a8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_bb26611e-8386-4438-9a69-f7385e13555d" xlink:href="ed-20221231.xsd#ed_ImpactOnEarningsHadLagPeriodBeenAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_bb26611e-8386-4438-9a69-f7385e13555d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_f2e85e2b-d273-45d6-8077-379323763e12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_f2e85e2b-d273-45d6-8077-379323763e12" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AverageNetUtilityPlantRates_7de74c11-ff8c-49dd-96fd-b6d7c05a75d1" xlink:href="ed-20221231.xsd#ed_AverageNetUtilityPlantRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_AverageNetUtilityPlantRates_7de74c11-ff8c-49dd-96fd-b6d7c05a75d1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredRegulatoryAssetLiability_6693ba59-e207-41d2-ad52-d4db9b0ea20d" xlink:href="ed-20221231.xsd#ed_DeferredRegulatoryAssetLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_DeferredRegulatoryAssetLiability_6693ba59-e207-41d2-ad52-d4db9b0ea20d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryMattersAverageBaseRate_8c2d98e7-0647-4036-90fb-0df1deae9c46" xlink:href="ed-20221231.xsd#ed_RegulatoryMattersAverageBaseRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_RegulatoryMattersAverageBaseRate_8c2d98e7-0647-4036-90fb-0df1deae9c46" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageCostOfCapital_8dd2f9a8-8012-4db0-a899-e41031122b52" xlink:href="ed-20221231.xsd#ed_WeightedAverageCostOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_WeightedAverageCostOfCapital_8dd2f9a8-8012-4db0-a899-e41031122b52" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_6b4f11e9-3052-4094-9f76-dd841f9d616d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_6b4f11e9-3052-4094-9f76-dd841f9d616d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesReturnonEquityPercentage_a4af2c0b-c9cd-47c0-a672-7d6901ce9203" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesReturnonEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PublicUtilitiesReturnonEquityPercentage_a4af2c0b-c9cd-47c0-a672-7d6901ce9203" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueRequirementEarningsPercentage_55607e33-510e-4870-a9dd-cd27d841d58c" xlink:href="ed-20221231.xsd#ed_RevenueRequirementEarningsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_RevenueRequirementEarningsPercentage_55607e33-510e-4870-a9dd-cd27d841d58c" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingThresholdLimit_b22d335a-b88f-4efc-b53c-b28669b7e5d3" xlink:href="ed-20221231.xsd#ed_RevenueSharingThresholdLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_RevenueSharingThresholdLimit_b22d335a-b88f-4efc-b53c-b28669b7e5d3" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_c80e6f27-6a5a-4177-b8bc-e33b202f8f5b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtPercentageBearingVariableInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_c80e6f27-6a5a-4177-b8bc-e33b202f8f5b" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_3a8c6b9f-dc2b-4aad-8814-e29d46aa9806" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_CommonEquityRatioPercentage_3a8c6b9f-dc2b-4aad-8814-e29d46aa9806" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_8dff2adf-e7c2-426c-9af6-acde63de4da1" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_8dff2adf-e7c2-426c-9af6-acde63de4da1" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforDebtCapitalStructurePercentage_9da89d3c-4333-46a9-a5f2-def78a43e1cf" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforDebtCapitalStructurePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforDebtCapitalStructurePercentage_9da89d3c-4333-46a9-a5f2-def78a43e1cf" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_7c4c5d04-e14a-4a3e-a71e-fa56d1ed543f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_7c4c5d04-e14a-4a3e-a71e-fa56d1ed543f" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_69a4b06e-cd51-47da-9d69-66f9f053b12b" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_69a4b06e-cd51-47da-9d69-66f9f053b12b" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017IncomeTaxCredit_17a7d04c-219e-46db-9c21-30264bedcdc7" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017IncomeTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_TaxCutsAndJobsActOf2017IncomeTaxCredit_17a7d04c-219e-46db-9c21-30264bedcdc7" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit_3f320570-1ed5-42c7-9daa-f3303a745dfa" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit_3f320570-1ed5-42c7-9daa-f3303a745dfa" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_df226efa-ad7b-4301-89b3-31c755d27f41" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_3020f46e-48ef-4b3f-a766-3ce53989655e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_3020f46e-48ef-4b3f-a766-3ce53989655e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_3020f46e-48ef-4b3f-a766-3ce53989655e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_3020f46e-48ef-4b3f-a766-3ce53989655e" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_3020f46e-48ef-4b3f-a766-3ce53989655e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_70fd15cf-2341-420d-a5b3-3bbf9b1bf9a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_3020f46e-48ef-4b3f-a766-3ce53989655e" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_70fd15cf-2341-420d-a5b3-3bbf9b1bf9a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProtectedPortionMember_30e13da3-0a3c-4ea5-a49a-f6f1469d2af9" xlink:href="ed-20221231.xsd#ed_ProtectedPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_70fd15cf-2341-420d-a5b3-3bbf9b1bf9a1" xlink:to="loc_ed_ProtectedPortionMember_30e13da3-0a3c-4ea5-a49a-f6f1469d2af9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnprotectedPortionMember_89ff1852-8645-4fd6-9a66-0c80d1327f2c" xlink:href="ed-20221231.xsd#ed_UnprotectedPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_70fd15cf-2341-420d-a5b3-3bbf9b1bf9a1" xlink:to="loc_ed_UnprotectedPortionMember_89ff1852-8645-4fd6-9a66-0c80d1327f2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodAxis_96a8d928-b419-482c-8732-a2a1d4be3331" xlink:href="ed-20221231.xsd#ed_PeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_ed_PeriodAxis_96a8d928-b419-482c-8732-a2a1d4be3331" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodDomain_96a8d928-b419-482c-8732-a2a1d4be3331_default" xlink:href="ed-20221231.xsd#ed_PeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_PeriodAxis_96a8d928-b419-482c-8732-a2a1d4be3331" xlink:to="loc_ed_PeriodDomain_96a8d928-b419-482c-8732-a2a1d4be3331_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:href="ed-20221231.xsd#ed_PeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_PeriodAxis_96a8d928-b419-482c-8732-a2a1d4be3331" xlink:to="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AnnuallyMember_783c0aea-54b5-434f-a90e-347a95ede883" xlink:href="ed-20221231.xsd#ed_AnnuallyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:to="loc_ed_AnnuallyMember_783c0aea-54b5-434f-a90e-347a95ede883" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverTenYearsMember_8b40f0c2-2c70-43b9-9f00-7742fc837b0b" xlink:href="ed-20221231.xsd#ed_OverTenYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:to="loc_ed_OverTenYearsMember_8b40f0c2-2c70-43b9-9f00-7742fc837b0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverTwoYearsMember_9bc18436-ba93-474f-a18c-e999d2551ed9" xlink:href="ed-20221231.xsd#ed_OverTwoYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:to="loc_ed_OverTwoYearsMember_9bc18436-ba93-474f-a18c-e999d2551ed9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverFiveYearsMember_d8c9b4dd-a143-4705-a29b-a87702b53705" xlink:href="ed-20221231.xsd#ed_OverFiveYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:to="loc_ed_OverFiveYearsMember_d8c9b4dd-a143-4705-a29b-a87702b53705" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OverFifteenYearsMember_51059832-e635-4739-8a79-c97c0f83280a" xlink:href="ed-20221231.xsd#ed_OverFifteenYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PeriodDomain_4963cede-e3b1-4d61-9b6a-1685d4619fc7" xlink:to="loc_ed_OverFifteenYearsMember_51059832-e635-4739-8a79-c97c0f83280a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_453ffaaf-01de-4dfb-a3e7-351bf967f59d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_453ffaaf-01de-4dfb-a3e7-351bf967f59d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_453ffaaf-01de-4dfb-a3e7-351bf967f59d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_453ffaaf-01de-4dfb-a3e7-351bf967f59d" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_453ffaaf-01de-4dfb-a3e7-351bf967f59d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_1063ec89-d465-47f9-83d2-e582291e31f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_453ffaaf-01de-4dfb-a3e7-351bf967f59d" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_1063ec89-d465-47f9-83d2-e582291e31f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_3bc1c954-9c50-4059-8cd2-07ff15b743f9" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_1063ec89-d465-47f9-83d2-e582291e31f0" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_3bc1c954-9c50-4059-8cd2-07ff15b743f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f9dbb0fe-f90b-42d9-b010-065c4b4acb6a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_dei_LegalEntityAxis_f9dbb0fe-f90b-42d9-b010-065c4b4acb6a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f9dbb0fe-f90b-42d9-b010-065c4b4acb6a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f9dbb0fe-f90b-42d9-b010-065c4b4acb6a" xlink:to="loc_dei_EntityDomain_f9dbb0fe-f90b-42d9-b010-065c4b4acb6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a9c298d4-062e-406f-8af3-ac6c96a0b588" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f9dbb0fe-f90b-42d9-b010-065c4b4acb6a" xlink:to="loc_dei_EntityDomain_a9c298d4-062e-406f-8af3-ac6c96a0b588" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f52b3fec-9217-4961-888f-6d99876e6a47" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a9c298d4-062e-406f-8af3-ac6c96a0b588" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f52b3fec-9217-4961-888f-6d99876e6a47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_f5a99d9f-5909-4e74-9394-2aa490ad3b47" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_us-gaap_PublicUtilityAxis_f5a99d9f-5909-4e74-9394-2aa490ad3b47" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_f5a99d9f-5909-4e74-9394-2aa490ad3b47_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_f5a99d9f-5909-4e74-9394-2aa490ad3b47" xlink:to="loc_us-gaap_UtilityPlantDomain_f5a99d9f-5909-4e74-9394-2aa490ad3b47_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_13a7af79-3576-40ba-a10a-c7c9fe84cb5d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_f5a99d9f-5909-4e74-9394-2aa490ad3b47" xlink:to="loc_us-gaap_UtilityPlantDomain_13a7af79-3576-40ba-a10a-c7c9fe84cb5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_4bf6e9f1-0783-448d-9c7b-7306caa92c9c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_13a7af79-3576-40ba-a10a-c7c9fe84cb5d" xlink:to="loc_us-gaap_GasTransmissionMember_4bf6e9f1-0783-448d-9c7b-7306caa92c9c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_8a5ce971-f434-4843-ba1c-ff3ed34bc145" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_8a5ce971-f434-4843-ba1c-ff3ed34bc145" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_8a5ce971-f434-4843-ba1c-ff3ed34bc145_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_8a5ce971-f434-4843-ba1c-ff3ed34bc145" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_8a5ce971-f434-4843-ba1c-ff3ed34bc145_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_71dcb904-f71e-4d67-912b-bc0a7a079e98" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_8a5ce971-f434-4843-ba1c-ff3ed34bc145" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_71dcb904-f71e-4d67-912b-bc0a7a079e98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_0188b2a9-49a3-42e8-99a0-0b1659c9696f" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_71dcb904-f71e-4d67-912b-bc0a7a079e98" xlink:to="loc_ed_RatePlanforYear1Member_0188b2a9-49a3-42e8-99a0-0b1659c9696f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_ab960c6a-5c31-4925-b066-5cfc5c4a18db" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_71dcb904-f71e-4d67-912b-bc0a7a079e98" xlink:to="loc_ed_RatePlanforYear2Member_ab960c6a-5c31-4925-b066-5cfc5c4a18db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear3Member_f52c3d09-53e9-421d-b831-9d8915514cf7" xlink:href="ed-20221231.xsd#ed_RatePlanforYear3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_71dcb904-f71e-4d67-912b-bc0a7a079e98" xlink:to="loc_ed_RatePlanforYear3Member_f52c3d09-53e9-421d-b831-9d8915514cf7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_73959109-5eb0-4ea6-95bd-b7474fdcb773" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_srt_ProductOrServiceAxis_73959109-5eb0-4ea6-95bd-b7474fdcb773" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_73959109-5eb0-4ea6-95bd-b7474fdcb773_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_73959109-5eb0-4ea6-95bd-b7474fdcb773" xlink:to="loc_srt_ProductsAndServicesDomain_73959109-5eb0-4ea6-95bd-b7474fdcb773_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_cef4faf3-3751-4fb6-b402-fa6d0a9929dc" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_73959109-5eb0-4ea6-95bd-b7474fdcb773" xlink:to="loc_srt_ProductsAndServicesDomain_cef4faf3-3751-4fb6-b402-fa6d0a9929dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LeaksAndServiceTerminationsMember_5c822d01-9cb2-4773-b95e-019824d69a51" xlink:href="ed-20221231.xsd#ed_LeaksAndServiceTerminationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_cef4faf3-3751-4fb6-b402-fa6d0a9929dc" xlink:to="loc_ed_LeaksAndServiceTerminationsMember_5c822d01-9cb2-4773-b95e-019824d69a51" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ServiceTerminationMember_bf8b134d-9785-4d1b-846d-d07ae197d585" xlink:href="ed-20221231.xsd#ed_ServiceTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_cef4faf3-3751-4fb6-b402-fa6d0a9929dc" xlink:to="loc_ed_ServiceTerminationMember_bf8b134d-9785-4d1b-846d-d07ae197d585" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_b8462b47-8b6f-491b-a637-8c3b3c70ce97" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_us-gaap_RegulatoryAssetAxis_b8462b47-8b6f-491b-a637-8c3b3c70ce97" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_b8462b47-8b6f-491b-a637-8c3b3c70ce97_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_b8462b47-8b6f-491b-a637-8c3b3c70ce97" xlink:to="loc_us-gaap_RegulatoryAssetDomain_b8462b47-8b6f-491b-a637-8c3b3c70ce97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_8b4bf2a2-2906-4344-8d1f-21a0d7a42347" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_b8462b47-8b6f-491b-a637-8c3b3c70ce97" xlink:to="loc_us-gaap_RegulatoryAssetDomain_8b4bf2a2-2906-4344-8d1f-21a0d7a42347" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasExcludingAMIMember_0544b4ad-db34-441a-8208-52d8a53f5c71" xlink:href="ed-20221231.xsd#ed_GasExcludingAMIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_8b4bf2a2-2906-4344-8d1f-21a0d7a42347" xlink:to="loc_ed_GasExcludingAMIMember_0544b4ad-db34-441a-8208-52d8a53f5c71" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_bcb236b0-129f-4a79-8000-36bb21d4efd9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvancedMeteringInfrastructureCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_8b4bf2a2-2906-4344-8d1f-21a0d7a42347" xlink:to="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_bcb236b0-129f-4a79-8000-36bb21d4efd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CustomerServiceSystemsCSSMember_ac3262ba-fe9d-4528-b99f-a93fc9910d56" xlink:href="ed-20221231.xsd#ed_CustomerServiceSystemsCSSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_8b4bf2a2-2906-4344-8d1f-21a0d7a42347" xlink:to="loc_ed_CustomerServiceSystemsCSSMember_ac3262ba-fe9d-4528-b99f-a93fc9910d56" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_a07a1faa-4aac-4c56-8d6f-5b78843cf675" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_srt_RangeAxis_a07a1faa-4aac-4c56-8d6f-5b78843cf675" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a07a1faa-4aac-4c56-8d6f-5b78843cf675_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_a07a1faa-4aac-4c56-8d6f-5b78843cf675" xlink:to="loc_srt_RangeMember_a07a1faa-4aac-4c56-8d6f-5b78843cf675_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_05c13a07-4685-4055-b935-48d8847d98af" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_a07a1faa-4aac-4c56-8d6f-5b78843cf675" xlink:to="loc_srt_RangeMember_05c13a07-4685-4055-b935-48d8847d98af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c6028f43-d7e1-41c1-8a81-8e1727d7e689" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_05c13a07-4685-4055-b935-48d8847d98af" xlink:to="loc_srt_MaximumMember_c6028f43-d7e1-41c1-8a81-8e1727d7e689" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_75f3725e-83df-4735-ad32-7c5ffc8624f8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_a1c9e85b-1dd1-4dae-aba9-c18de4793253" xlink:to="loc_srt_StatementScenarioAxis_75f3725e-83df-4735-ad32-7c5ffc8624f8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_75f3725e-83df-4735-ad32-7c5ffc8624f8_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_75f3725e-83df-4735-ad32-7c5ffc8624f8" xlink:to="loc_srt_ScenarioUnspecifiedDomain_75f3725e-83df-4735-ad32-7c5ffc8624f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_9ccfe591-e039-473e-a395-05af92961520" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_75f3725e-83df-4735-ad32-7c5ffc8624f8" xlink:to="loc_srt_ScenarioUnspecifiedDomain_9ccfe591-e039-473e-a395-05af92961520" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_d92596e2-1419-4d9a-b396-d1b0e88eac26" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_9ccfe591-e039-473e-a395-05af92961520" xlink:to="loc_srt_ScenarioForecastMember_d92596e2-1419-4d9a-b396-d1b0e88eac26" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansCECONYSteamDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersSummaryofUtilitiesRatePlansCECONYSteamDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansCECONYSteamDetails" xlink:type="extended" id="ifd347ffa0ac7484dabfffd6b51af84e0_RegulatoryMattersSummaryofUtilitiesRatePlansCECONYSteamDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BaseRateIncreaseDecrease_aad290d3-3571-4ca2-9a52-be797785f076" xlink:href="ed-20221231.xsd#ed_BaseRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_BaseRateIncreaseDecrease_aad290d3-3571-4ca2-9a52-be797785f076" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_2fa16cf7-1f2a-41d8-ad33-cbe7e670a30b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_2fa16cf7-1f2a-41d8-ad33-cbe7e670a30b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAmortizationPeriod_ba42a2c5-334b-4862-a481-c0a84f60d3b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_RegulatoryLiabilityAmortizationPeriod_ba42a2c5-334b-4862-a481-c0a84f60d3b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialPenaltyExpense_45343efe-d6e7-4df1-b5f2-2f04f0aa5141" xlink:href="ed-20221231.xsd#ed_PotentialPenaltyExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_PotentialPenaltyExpense_45343efe-d6e7-4df1-b5f2-2f04f0aa5141" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_020ee15c-f1e4-4ffb-b9ac-9f29b1a3f78b" xlink:href="ed-20221231.xsd#ed_ImpactOnEarningsHadLagPeriodBeenAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_020ee15c-f1e4-4ffb-b9ac-9f29b1a3f78b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_9ddd183f-569a-46d7-981e-3bd54daf4401" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_9ddd183f-569a-46d7-981e-3bd54daf4401" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities_ac74a910-2b59-4586-934b-9ac07e09a2a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities_ac74a910-2b59-4586-934b-9ac07e09a2a6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AverageNetUtilityPlantRates_2b80f6a0-0a66-4c41-ab90-bea7a925a00e" xlink:href="ed-20221231.xsd#ed_AverageNetUtilityPlantRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_AverageNetUtilityPlantRates_2b80f6a0-0a66-4c41-ab90-bea7a925a00e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryLiabilities_f1b0efaa-da7e-4a13-9246-46817189f542" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInRegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryLiabilities_f1b0efaa-da7e-4a13-9246-46817189f542" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryMattersAverageBaseRate_82c5a7a8-d7fa-4345-94ff-a7beea85ddc7" xlink:href="ed-20221231.xsd#ed_RegulatoryMattersAverageBaseRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_RegulatoryMattersAverageBaseRate_82c5a7a8-d7fa-4345-94ff-a7beea85ddc7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageCostOfCapital_f27a2c42-0eee-4ab7-9a4d-154727fdd6db" xlink:href="ed-20221231.xsd#ed_WeightedAverageCostOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_WeightedAverageCostOfCapital_f27a2c42-0eee-4ab7-9a4d-154727fdd6db" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_ae3ff285-2e69-4d55-a326-d59b85a4dbef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_ae3ff285-2e69-4d55-a326-d59b85a4dbef" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesReturnonEquityPercentage_149c8e03-e910-4e4b-ad41-9006947fd70d" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesReturnonEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_PublicUtilitiesReturnonEquityPercentage_149c8e03-e910-4e4b-ad41-9006947fd70d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueRequirementEarningsPercentage_be65ef4d-28ad-4212-9085-bf11e13d2f9f" xlink:href="ed-20221231.xsd#ed_RevenueRequirementEarningsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_RevenueRequirementEarningsPercentage_be65ef4d-28ad-4212-9085-bf11e13d2f9f" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingThresholdLimit_4b619e5f-193d-44e3-a436-46a514abfdc2" xlink:href="ed-20221231.xsd#ed_RevenueSharingThresholdLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_RevenueSharingThresholdLimit_4b619e5f-193d-44e3-a436-46a514abfdc2" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingAdjustment_52bdd167-7d5f-4ada-8bc1-9ebe66680b9d" xlink:href="ed-20221231.xsd#ed_RevenueSharingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_RevenueSharingAdjustment_52bdd167-7d5f-4ada-8bc1-9ebe66680b9d" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingAdditionalAdjustment_01498d7b-5501-4855-a431-44bf8f69c3a0" xlink:href="ed-20221231.xsd#ed_RevenueSharingAdditionalAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_RevenueSharingAdditionalAdjustment_01498d7b-5501-4855-a431-44bf8f69c3a0" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_a41b8bf2-e304-4ac9-9701-3a6f9aa304d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtPercentageBearingVariableInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_a41b8bf2-e304-4ac9-9701-3a6f9aa304d0" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_edc35e40-786b-4382-9d08-f302cccb62f9" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_CommonEquityRatioPercentage_edc35e40-786b-4382-9d08-f302cccb62f9" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherRegulatoryLiabilities_ebd239ea-a16e-4a62-b4e5-3ce44e3b4ff9" xlink:href="ed-20221231.xsd#ed_OtherRegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_OtherRegulatoryLiabilities_ebd239ea-a16e-4a62-b4e5-3ce44e3b4ff9" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsRateDifference_9a1d5cd5-16be-4350-b656-22689cb7aaec" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsRateDifference"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_PropertyTaxDeferralsRateDifference_9a1d5cd5-16be-4350-b656-22689cb7aaec" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_65b5e404-2273-41e6-b52b-e1acc2703b81" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_65b5e404-2273-41e6-b52b-e1acc2703b81" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e4e6bf7e-e2d6-4f09-a738-88517adef990" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7e5d049f-6061-447e-8484-9f4371bf9db8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:to="loc_dei_LegalEntityAxis_7e5d049f-6061-447e-8484-9f4371bf9db8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7e5d049f-6061-447e-8484-9f4371bf9db8_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7e5d049f-6061-447e-8484-9f4371bf9db8" xlink:to="loc_dei_EntityDomain_7e5d049f-6061-447e-8484-9f4371bf9db8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2745e956-c3f3-4793-a216-9e8d1e1ebf1e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7e5d049f-6061-447e-8484-9f4371bf9db8" xlink:to="loc_dei_EntityDomain_2745e956-c3f3-4793-a216-9e8d1e1ebf1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_883b2b37-263f-473b-806d-b4457bb12a0b" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2745e956-c3f3-4793-a216-9e8d1e1ebf1e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_883b2b37-263f-473b-806d-b4457bb12a0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_375a865a-5c90-410d-9488-d36d24d55379" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:to="loc_us-gaap_PublicUtilityAxis_375a865a-5c90-410d-9488-d36d24d55379" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_375a865a-5c90-410d-9488-d36d24d55379_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_375a865a-5c90-410d-9488-d36d24d55379" xlink:to="loc_us-gaap_UtilityPlantDomain_375a865a-5c90-410d-9488-d36d24d55379_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_1cb9cb74-2f20-49e0-86a2-f01df76a8210" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_375a865a-5c90-410d-9488-d36d24d55379" xlink:to="loc_us-gaap_UtilityPlantDomain_1cb9cb74-2f20-49e0-86a2-f01df76a8210" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_789e5203-b517-4bea-b08c-9105083fddf8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_1cb9cb74-2f20-49e0-86a2-f01df76a8210" xlink:to="loc_us-gaap_SteamPlantMember_789e5203-b517-4bea-b08c-9105083fddf8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_60764a0e-612e-4d5d-9802-76864b8c6c06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_60764a0e-612e-4d5d-9802-76864b8c6c06" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_60764a0e-612e-4d5d-9802-76864b8c6c06_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_60764a0e-612e-4d5d-9802-76864b8c6c06" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_60764a0e-612e-4d5d-9802-76864b8c6c06_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_60764a0e-612e-4d5d-9802-76864b8c6c06" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_3301f812-8943-48e2-b396-b7308bc55020" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanforYear1Member_3301f812-8943-48e2-b396-b7308bc55020" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_3cba9894-0d9d-4ea4-af74-059b90582423" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanforYear2Member_3cba9894-0d9d-4ea4-af74-059b90582423" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear3Member_a7751dae-9694-4444-88d2-7a0654013351" xlink:href="ed-20221231.xsd#ed_RatePlanforYear3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanforYear3Member_a7751dae-9694-4444-88d2-7a0654013351" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear4Member_69612ae3-7957-4f12-bfa2-343177adbd76" xlink:href="ed-20221231.xsd#ed_RatePlanforYear4Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanforYear4Member_69612ae3-7957-4f12-bfa2-343177adbd76" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear5Member_4392dd7c-c955-4d4a-8669-4ce0c29ac6c6" xlink:href="ed-20221231.xsd#ed_RatePlanforYear5Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanforYear5Member_4392dd7c-c955-4d4a-8669-4ce0c29ac6c6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanForYear6Member_ff73eb19-e3a5-41ab-b20b-0b89c829e459" xlink:href="ed-20221231.xsd#ed_RatePlanForYear6Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanForYear6Member_ff73eb19-e3a5-41ab-b20b-0b89c829e459" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanForYear7Member_62d100c9-7b92-4303-8e07-39a2f36a4162" xlink:href="ed-20221231.xsd#ed_RatePlanForYear7Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanForYear7Member_62d100c9-7b92-4303-8e07-39a2f36a4162" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanForYear8Member_764fdf29-8a2e-4b6d-91e4-976bc55e082d" xlink:href="ed-20221231.xsd#ed_RatePlanForYear8Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanForYear8Member_764fdf29-8a2e-4b6d-91e4-976bc55e082d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanForYear9Member_c46de8d8-0a7e-4f29-97f7-f5d8a4528776" xlink:href="ed-20221231.xsd#ed_RatePlanForYear9Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_f5cadcf6-6d29-4611-9e13-5e26ae441265" xlink:to="loc_ed_RatePlanForYear9Member_c46de8d8-0a7e-4f29-97f7-f5d8a4528776" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_8a3925c1-b68d-4ea8-b84e-9e1e8586cb9e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:to="loc_srt_RangeAxis_8a3925c1-b68d-4ea8-b84e-9e1e8586cb9e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8a3925c1-b68d-4ea8-b84e-9e1e8586cb9e_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_8a3925c1-b68d-4ea8-b84e-9e1e8586cb9e" xlink:to="loc_srt_RangeMember_8a3925c1-b68d-4ea8-b84e-9e1e8586cb9e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c18b6247-2ff6-469a-8ad5-aaf911dfe51a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_8a3925c1-b68d-4ea8-b84e-9e1e8586cb9e" xlink:to="loc_srt_RangeMember_c18b6247-2ff6-469a-8ad5-aaf911dfe51a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d5ccf50a-4b9b-4f90-955a-94a3706b20d8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c18b6247-2ff6-469a-8ad5-aaf911dfe51a" xlink:to="loc_srt_MaximumMember_d5ccf50a-4b9b-4f90-955a-94a3706b20d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_c41c889f-8256-4858-a484-e5daa3b680bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_c42059c3-955c-4a3c-8cbc-ec867db9d0f0" xlink:to="loc_us-gaap_RegulatoryAssetAxis_c41c889f-8256-4858-a484-e5daa3b680bc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_c41c889f-8256-4858-a484-e5daa3b680bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_c41c889f-8256-4858-a484-e5daa3b680bc" xlink:to="loc_us-gaap_RegulatoryAssetDomain_c41c889f-8256-4858-a484-e5daa3b680bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_a637efc0-be0f-4427-a591-79e55bf95913" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_c41c889f-8256-4858-a484-e5daa3b680bc" xlink:to="loc_us-gaap_RegulatoryAssetDomain_a637efc0-be0f-4427-a591-79e55bf95913" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProductionMember_b5691b33-35e5-4540-ab96-c63bb1e8dad7" xlink:href="ed-20221231.xsd#ed_ProductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_a637efc0-be0f-4427-a591-79e55bf95913" xlink:to="loc_ed_ProductionMember_b5691b33-35e5-4540-ab96-c63bb1e8dad7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DistributionMember_d15ff1a1-884b-4aaf-854e-b4f1d4cefc3d" xlink:href="ed-20221231.xsd#ed_DistributionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_a637efc0-be0f-4427-a591-79e55bf95913" xlink:to="loc_ed_DistributionMember_d15ff1a1-884b-4aaf-854e-b4f1d4cefc3d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkElectricDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkElectricDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkElectricDetails" xlink:type="extended" id="i81827883ec024f81bc042e1a717be10c_RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkElectricDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BaseRateIncreaseDecrease_65a1979c-e412-407e-a122-c9375efde889" xlink:href="ed-20221231.xsd#ed_BaseRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_BaseRateIncreaseDecrease_65a1979c-e412-407e-a122-c9375efde889" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfRegulatoryAsset_caa053f8-b1a4-4a64-8261-63d61292f0a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfRegulatoryAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_AmortizationOfRegulatoryAsset_caa053f8-b1a4-4a64-8261-63d61292f0a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_a242f0ee-4274-45d8-86f6-78cca5d382d9" xlink:href="ed-20221231.xsd#ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_a242f0ee-4274-45d8-86f6-78cca5d382d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPotentialIncentiveRelatedToServiceTermination_4cae59c1-7ca8-4784-a9b1-717b5ae4aada" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPotentialIncentiveRelatedToServiceTermination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilitiesPotentialIncentiveRelatedToServiceTermination_4cae59c1-7ca8-4784-a9b1-717b5ae4aada" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismIncentiveRevenue_2f46d2a9-58c6-4410-b9af-79a0ddc2ca7e" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_EarningsAdjustmentMechanismIncentiveRevenue_2f46d2a9-58c6-4410-b9af-79a0ddc2ca7e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismIncentiveRevenueReversed_f3b93dce-1afa-4ba4-aab7-387cd4cef836" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismIncentiveRevenueReversed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_EarningsAdjustmentMechanismIncentiveRevenueReversed_f3b93dce-1afa-4ba4-aab7-387cd4cef836" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_ef0f038e-0103-4087-bd92-7b519f2457a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_ef0f038e-0103-4087-bd92-7b519f2457a4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_4ba2cd71-fb89-45ae-aeb9-85c0ddbcd5fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_ContractWithCustomerLiability_4ba2cd71-fb89-45ae-aeb9-85c0ddbcd5fe" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialPenaltyExpense_79b617b4-29ca-4916-81a4-43c954bb5e21" xlink:href="ed-20221231.xsd#ed_PotentialPenaltyExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PotentialPenaltyExpense_79b617b4-29ca-4916-81a4-43c954bb5e21" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_fbe72004-def1-497d-8532-5f00150f9c4e" xlink:href="ed-20221231.xsd#ed_ImpactOnEarningsHadLagPeriodBeenAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_fbe72004-def1-497d-8532-5f00150f9c4e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredExpenseRecognized_65a49874-0884-496f-b5c0-a5720038dff8" xlink:href="ed-20221231.xsd#ed_DeferredExpenseRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_DeferredExpenseRecognized_65a49874-0884-496f-b5c0-a5720038dff8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AverageNetUtilityPlantRates_3755ed33-33cd-4796-afb6-b4ffbcc12384" xlink:href="ed-20221231.xsd#ed_AverageNetUtilityPlantRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_AverageNetUtilityPlantRates_3755ed33-33cd-4796-afb6-b4ffbcc12384" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredRegulatoryAssetLiability_cfe2d2c7-c00b-4705-8f33-725a05757115" xlink:href="ed-20221231.xsd#ed_DeferredRegulatoryAssetLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_DeferredRegulatoryAssetLiability_cfe2d2c7-c00b-4705-8f33-725a05757115" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryMattersAverageBaseRate_4c8e168f-5c71-4e80-b203-dbf24471d4ca" xlink:href="ed-20221231.xsd#ed_RegulatoryMattersAverageBaseRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_RegulatoryMattersAverageBaseRate_4c8e168f-5c71-4e80-b203-dbf24471d4ca" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageCostOfCapital_241b92f0-de5e-4ade-851b-3dcc1db503d7" xlink:href="ed-20221231.xsd#ed_WeightedAverageCostOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_WeightedAverageCostOfCapital_241b92f0-de5e-4ade-851b-3dcc1db503d7" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_3df68a23-3e6f-4d55-af71-60d26a186e9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_3df68a23-3e6f-4d55-af71-60d26a186e9f" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesReturnonEquityPercentage_52dca9ab-3ee9-4d23-aee2-2a322b725739" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesReturnonEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilitiesReturnonEquityPercentage_52dca9ab-3ee9-4d23-aee2-2a322b725739" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueRequirementEarningsPercentage_a058b72d-ceef-4ac9-bd2e-3b97798d9fe3" xlink:href="ed-20221231.xsd#ed_RevenueRequirementEarningsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_RevenueRequirementEarningsPercentage_a058b72d-ceef-4ac9-bd2e-3b97798d9fe3" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PercentageOfDebtSecuritiesAmortizedCostBased_1471c483-e794-4c71-b7f4-45e7498cbbca" xlink:href="ed-20221231.xsd#ed_PercentageOfDebtSecuritiesAmortizedCostBased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PercentageOfDebtSecuritiesAmortizedCostBased_1471c483-e794-4c71-b7f4-45e7498cbbca" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_764cee70-6d61-4aaa-a90e-b716174f1455" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_CommonEquityRatioPercentage_764cee70-6d61-4aaa-a90e-b716174f1455" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAmortizationPeriod_e6d4dbea-1735-4483-ad91-57a5ef5914fb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_RegulatoryAssetAmortizationPeriod_e6d4dbea-1735-4483-ad91-57a5ef5914fb" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilityRecoveryOfLatePaymentChargesPeriod_9c9282c2-a4dc-4a4c-92c4-39e63692c5a1" xlink:href="ed-20221231.xsd#ed_PublicUtilityRecoveryOfLatePaymentChargesPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilityRecoveryOfLatePaymentChargesPeriod_9c9282c2-a4dc-4a4c-92c4-39e63692c5a1" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesAmount_218771f4-7e75-4919-b746-de3ff8ff17fb" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryOfLatePaymentChargesAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesAmount_218771f4-7e75-4919-b746-de3ff8ff17fb" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesReturnOnEquityThresholdRate_15320431-9b7a-4f4c-b3d7-bc4adac3d3df" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryOfLatePaymentChargesReturnOnEquityThresholdRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesReturnOnEquityThresholdRate_15320431-9b7a-4f4c-b3d7-bc4adac3d3df" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_47a187ea-86a1-45db-a2cc-b99db0cac3df" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_47a187ea-86a1-45db-a2cc-b99db0cac3df" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentageOfDebtToTotalConsolidatedDebt_f043483b-f169-419c-b230-fe4993f02dae" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentageOfDebtToTotalConsolidatedDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentageOfDebtToTotalConsolidatedDebt_f043483b-f169-419c-b230-fe4993f02dae" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_740c2400-b766-4f6a-b893-0ce38cf24ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_740c2400-b766-4f6a-b893-0ce38cf24ebd" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRate_805e6642-4c9a-4fab-b8a4-789957e614f3" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRate_805e6642-4c9a-4fab-b8a4-789957e614f3" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_e3c09d6a-6c54-4b70-b677-3013415dab70" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_e3c09d6a-6c54-4b70-b677-3013415dab70" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_2697b16f-2148-4b21-80ae-fc07c607dfca" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_fb4e3fdf-477e-42fb-b831-418723de2334" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_srt_ProductOrServiceAxis_fb4e3fdf-477e-42fb-b831-418723de2334" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_fb4e3fdf-477e-42fb-b831-418723de2334_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_fb4e3fdf-477e-42fb-b831-418723de2334" xlink:to="loc_srt_ProductsAndServicesDomain_fb4e3fdf-477e-42fb-b831-418723de2334_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d83623da-87b1-4f71-b87b-4b6c7ffbc14a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_fb4e3fdf-477e-42fb-b831-418723de2334" xlink:to="loc_srt_ProductsAndServicesDomain_d83623da-87b1-4f71-b87b-4b6c7ffbc14a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EnergyEfficiencyMember_0c02e3e6-d509-46e2-9173-892d40a2ed88" xlink:href="ed-20221231.xsd#ed_EnergyEfficiencyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_d83623da-87b1-4f71-b87b-4b6c7ffbc14a" xlink:to="loc_ed_EnergyEfficiencyMember_0c02e3e6-d509-46e2-9173-892d40a2ed88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ServiceTerminationMember_48c5756a-b7cb-4c03-b84d-14d3bd90094b" xlink:href="ed-20221231.xsd#ed_ServiceTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_d83623da-87b1-4f71-b87b-4b6c7ffbc14a" xlink:to="loc_ed_ServiceTerminationMember_48c5756a-b7cb-4c03-b84d-14d3bd90094b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_43af3966-30f1-4340-8045-ede3966ced40" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_dei_LegalEntityAxis_43af3966-30f1-4340-8045-ede3966ced40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_43af3966-30f1-4340-8045-ede3966ced40_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_43af3966-30f1-4340-8045-ede3966ced40" xlink:to="loc_dei_EntityDomain_43af3966-30f1-4340-8045-ede3966ced40_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1bb91815-386d-495f-b736-b99d328dc1dd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_43af3966-30f1-4340-8045-ede3966ced40" xlink:to="loc_dei_EntityDomain_1bb91815-386d-495f-b736-b99d328dc1dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_de2efb30-add7-452c-9ecb-84873bc846c2" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1bb91815-386d-495f-b736-b99d328dc1dd" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_de2efb30-add7-452c-9ecb-84873bc846c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_fccdf0b5-9a82-481a-86fb-37ba31d8f16e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_us-gaap_PublicUtilityAxis_fccdf0b5-9a82-481a-86fb-37ba31d8f16e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_fccdf0b5-9a82-481a-86fb-37ba31d8f16e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_fccdf0b5-9a82-481a-86fb-37ba31d8f16e" xlink:to="loc_us-gaap_UtilityPlantDomain_fccdf0b5-9a82-481a-86fb-37ba31d8f16e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_b4cf360c-66e1-498c-8392-94ba98ed78b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_fccdf0b5-9a82-481a-86fb-37ba31d8f16e" xlink:to="loc_us-gaap_UtilityPlantDomain_b4cf360c-66e1-498c-8392-94ba98ed78b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_4b15aec9-6b96-4ea6-a4d3-ae287f439490" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_b4cf360c-66e1-498c-8392-94ba98ed78b0" xlink:to="loc_us-gaap_ElectricTransmissionMember_4b15aec9-6b96-4ea6-a4d3-ae287f439490" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_f5f78dc5-8c68-4a9d-9226-ec6e72057d43" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_srt_StatementScenarioAxis_f5f78dc5-8c68-4a9d-9226-ec6e72057d43" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_f5f78dc5-8c68-4a9d-9226-ec6e72057d43_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_f5f78dc5-8c68-4a9d-9226-ec6e72057d43" xlink:to="loc_srt_ScenarioUnspecifiedDomain_f5f78dc5-8c68-4a9d-9226-ec6e72057d43_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_44c3c0a1-4866-4d71-a0e5-27e337108db1" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_f5f78dc5-8c68-4a9d-9226-ec6e72057d43" xlink:to="loc_srt_ScenarioUnspecifiedDomain_44c3c0a1-4866-4d71-a0e5-27e337108db1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_b579514a-dba9-4814-ac6f-c6eee1d6e3cf" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_44c3c0a1-4866-4d71-a0e5-27e337108db1" xlink:to="loc_srt_ScenarioForecastMember_b579514a-dba9-4814-ac6f-c6eee1d6e3cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_2fb71135-f8ab-4171-87d6-a8c15cbdf99b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_2fb71135-f8ab-4171-87d6-a8c15cbdf99b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_2fb71135-f8ab-4171-87d6-a8c15cbdf99b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_2fb71135-f8ab-4171-87d6-a8c15cbdf99b" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_2fb71135-f8ab-4171-87d6-a8c15cbdf99b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_dd1bf731-db1f-48af-9387-5a011feb88bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_2fb71135-f8ab-4171-87d6-a8c15cbdf99b" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_dd1bf731-db1f-48af-9387-5a011feb88bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_3c9bf4d0-0247-4054-898e-a748f44564ed" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_dd1bf731-db1f-48af-9387-5a011feb88bc" xlink:to="loc_ed_RatePlanforYear1Member_3c9bf4d0-0247-4054-898e-a748f44564ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_32996e05-9d3c-48ac-8c5e-c84aadaab42e" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_dd1bf731-db1f-48af-9387-5a011feb88bc" xlink:to="loc_ed_RatePlanforYear2Member_32996e05-9d3c-48ac-8c5e-c84aadaab42e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear3Member_216249bf-cb73-43c4-a6df-7dc5f907ea00" xlink:href="ed-20221231.xsd#ed_RatePlanforYear3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_dd1bf731-db1f-48af-9387-5a011feb88bc" xlink:to="loc_ed_RatePlanforYear3Member_216249bf-cb73-43c4-a6df-7dc5f907ea00" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_5c24795b-177f-4a04-83cd-20b1e43edd2c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_srt_RangeAxis_5c24795b-177f-4a04-83cd-20b1e43edd2c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5c24795b-177f-4a04-83cd-20b1e43edd2c_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_5c24795b-177f-4a04-83cd-20b1e43edd2c" xlink:to="loc_srt_RangeMember_5c24795b-177f-4a04-83cd-20b1e43edd2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d0f69a31-90ae-4ecc-8166-8970410be8bf" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_5c24795b-177f-4a04-83cd-20b1e43edd2c" xlink:to="loc_srt_RangeMember_d0f69a31-90ae-4ecc-8166-8970410be8bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c4a44681-6f19-4c07-b8a6-0e86f7965930" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_d0f69a31-90ae-4ecc-8166-8970410be8bf" xlink:to="loc_srt_MaximumMember_c4a44681-6f19-4c07-b8a6-0e86f7965930" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_d114aaea-27ad-467f-a68d-bd6ccd2f76d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_us-gaap_RegulatoryAssetAxis_d114aaea-27ad-467f-a68d-bd6ccd2f76d7" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_d114aaea-27ad-467f-a68d-bd6ccd2f76d7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_d114aaea-27ad-467f-a68d-bd6ccd2f76d7" xlink:to="loc_us-gaap_RegulatoryAssetDomain_d114aaea-27ad-467f-a68d-bd6ccd2f76d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_8d48d742-9e39-40ce-b812-5e0385f03d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_d114aaea-27ad-467f-a68d-bd6ccd2f76d7" xlink:to="loc_us-gaap_RegulatoryAssetDomain_8d48d742-9e39-40ce-b812-5e0385f03d0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricExcludingAMIMember_15b172bc-3ace-4609-b820-18670b9ceb2f" xlink:href="ed-20221231.xsd#ed_ElectricExcludingAMIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_8d48d742-9e39-40ce-b812-5e0385f03d0c" xlink:to="loc_ed_ElectricExcludingAMIMember_15b172bc-3ace-4609-b820-18670b9ceb2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_c889e8c4-2559-47fe-bb22-86339934acc3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvancedMeteringInfrastructureCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_8d48d742-9e39-40ce-b812-5e0385f03d0c" xlink:to="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_c889e8c4-2559-47fe-bb22-86339934acc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_c37c8eaf-1560-461d-bd7c-a334c9453d6b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_e9262bfe-2e0a-4ccd-b92a-66a380d7a45d" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_c37c8eaf-1560-461d-bd7c-a334c9453d6b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_c37c8eaf-1560-461d-bd7c-a334c9453d6b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_c37c8eaf-1560-461d-bd7c-a334c9453d6b" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_c37c8eaf-1560-461d-bd7c-a334c9453d6b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_b1ca872b-a82d-4b4a-97f6-a1c513da9bf3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_c37c8eaf-1560-461d-bd7c-a334c9453d6b" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_b1ca872b-a82d-4b4a-97f6-a1c513da9bf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_f794a10e-4ca8-4767-a95d-98239b30f5ee" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_b1ca872b-a82d-4b4a-97f6-a1c513da9bf3" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_f794a10e-4ca8-4767-a95d-98239b30f5ee" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkGasDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkGasDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkGasDetails" xlink:type="extended" id="ib906a5abba3b4ff4be3fd5f78f5b5f73_RegulatoryMattersSummaryofUtilitiesRatePlansORNewYorkGasDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BaseRateIncreaseDecrease_c03b13db-325b-4ce8-b2c5-696f524170dd" xlink:href="ed-20221231.xsd#ed_BaseRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_BaseRateIncreaseDecrease_c03b13db-325b-4ce8-b2c5-696f524170dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfRegulatoryAsset_9abe1b00-8783-47c5-85d4-28b8905f2a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfRegulatoryAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_AmortizationOfRegulatoryAsset_9abe1b00-8783-47c5-85d4-28b8905f2a3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAppropriated_3796822a-a336-4895-a551-f09a2fc795a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAppropriated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_RetainedEarningsAppropriated_3796822a-a336-4895-a551-f09a2fc795a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRetentionOfAnnualRevenuesShareInVariancePercentage_2c17203e-0dcf-4b58-9e50-86e2ff462697" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRetentionOfAnnualRevenuesShareInVariancePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilitiesRetentionOfAnnualRevenuesShareInVariancePercentage_2c17203e-0dcf-4b58-9e50-86e2ff462697" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_d3cfcb82-686d-4af5-9fd2-da913faaa2b8" xlink:href="ed-20221231.xsd#ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PotentialEarningsAdjustmentMechanismIncentiveRevenue_d3cfcb82-686d-4af5-9fd2-da913faaa2b8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialPositiveRateAdjustmentGasSafetyAndPerformanceRevenue_08c32c44-f94b-4832-93d7-ffd0c43f7717" xlink:href="ed-20221231.xsd#ed_PotentialPositiveRateAdjustmentGasSafetyAndPerformanceRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PotentialPositiveRateAdjustmentGasSafetyAndPerformanceRevenue_08c32c44-f94b-4832-93d7-ffd0c43f7717" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismIncentiveRevenue_8f6360d7-5831-4eb2-a5c1-e402e4ed40d4" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismIncentiveRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_EarningsAdjustmentMechanismIncentiveRevenue_8f6360d7-5831-4eb2-a5c1-e402e4ed40d4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismIncentiveRevenueReversed_8bf4c9e6-69e5-49a2-b3c3-88f554d1c24e" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismIncentiveRevenueReversed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_EarningsAdjustmentMechanismIncentiveRevenueReversed_8bf4c9e6-69e5-49a2-b3c3-88f554d1c24e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_a40d893c-d9a7-48df-b9dd-800d1a67d17e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_a40d893c-d9a7-48df-b9dd-800d1a67d17e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialPenaltyExpense_5ac4a76e-8fe5-43fc-b8a2-998f4dc21051" xlink:href="ed-20221231.xsd#ed_PotentialPenaltyExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PotentialPenaltyExpense_5ac4a76e-8fe5-43fc-b8a2-998f4dc21051" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_70fb35e3-c194-44e7-a7a6-eb88bd83c128" xlink:href="ed-20221231.xsd#ed_ImpactOnEarningsHadLagPeriodBeenAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_ImpactOnEarningsHadLagPeriodBeenAdjusted_70fb35e3-c194-44e7-a7a6-eb88bd83c128" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_d7797748-b018-42d4-88ae-25d97526395c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities_d7797748-b018-42d4-88ae-25d97526395c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities_ef7f2934-28d9-4352-8735-6be629815847" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities_ef7f2934-28d9-4352-8735-6be629815847" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AverageNetUtilityPlantRates_b6268803-736b-4423-b231-57118da711df" xlink:href="ed-20221231.xsd#ed_AverageNetUtilityPlantRates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_AverageNetUtilityPlantRates_b6268803-736b-4423-b231-57118da711df" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryMattersAverageBaseRate_22d55c40-bbd3-47bd-b5b3-3e1964ecc79f" xlink:href="ed-20221231.xsd#ed_RegulatoryMattersAverageBaseRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_RegulatoryMattersAverageBaseRate_22d55c40-bbd3-47bd-b5b3-3e1964ecc79f" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageCostOfCapital_9565da2c-61b2-4008-9797-de51cafaaae6" xlink:href="ed-20221231.xsd#ed_WeightedAverageCostOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_WeightedAverageCostOfCapital_9565da2c-61b2-4008-9797-de51cafaaae6" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_72417a9c-c993-4270-b9b8-e9978029b7a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_72417a9c-c993-4270-b9b8-e9978029b7a0" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesReturnonEquityPercentage_be504483-e112-481f-b550-c5b2966359cb" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesReturnonEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilitiesReturnonEquityPercentage_be504483-e112-481f-b550-c5b2966359cb" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueRequirementEarningsPercentage_f885a557-6a38-41d8-9eed-4e655ed95de0" xlink:href="ed-20221231.xsd#ed_RevenueRequirementEarningsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_RevenueRequirementEarningsPercentage_f885a557-6a38-41d8-9eed-4e655ed95de0" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueSharingActualEarningsAboveThreshold_37895582-b4ce-411b-b52d-97677ef0a003" xlink:href="ed-20221231.xsd#ed_RevenueSharingActualEarningsAboveThreshold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_RevenueSharingActualEarningsAboveThreshold_37895582-b4ce-411b-b52d-97677ef0a003" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PercentageOfDebtSecuritiesAmortizedCostBased_e0b9880a-6f94-499b-9c30-bb25e75ae07f" xlink:href="ed-20221231.xsd#ed_PercentageOfDebtSecuritiesAmortizedCostBased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PercentageOfDebtSecuritiesAmortizedCostBased_e0b9880a-6f94-499b-9c30-bb25e75ae07f" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_bb2683c2-2dbe-4bdf-8e45-9fc3ff421fc1" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_CommonEquityRatioPercentage_bb2683c2-2dbe-4bdf-8e45-9fc3ff421fc1" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_0e99f64d-06b4-441c-b0bc-7d95108e4c9a" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentage_0e99f64d-06b4-441c-b0bc-7d95108e4c9a" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentageOfDebtToTotalConsolidatedDebt_ca6b9799-d120-48b5-b13e-7c583994eb2d" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentageOfDebtToTotalConsolidatedDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilitiesNotificationThresholdforNonUtilityInvestmentsPercentageOfDebtToTotalConsolidatedDebt_ca6b9799-d120-48b5-b13e-7c583994eb2d" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_43c28874-697a-4909-a00f-35a9d32c2259" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_43c28874-697a-4909-a00f-35a9d32c2259" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRate_42ad0567-7b28-4e89-add2-9e74dc40a8ca" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRate_42ad0567-7b28-4e89-add2-9e74dc40a8ca" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_03810bbd-09eb-4807-b4df-b9db710b386e" xlink:href="ed-20221231.xsd#ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PropertyTaxDeferralsLimitationFromRateAnnualMaximum_03810bbd-09eb-4807-b4df-b9db710b386e" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilityRecoveryOfLatePaymentChargesPeriod_4628ee9b-4106-4dd2-a036-65fa56675f42" xlink:href="ed-20221231.xsd#ed_PublicUtilityRecoveryOfLatePaymentChargesPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilityRecoveryOfLatePaymentChargesPeriod_4628ee9b-4106-4dd2-a036-65fa56675f42" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesAmount_71e9c8d9-3628-4612-8208-7185c940be28" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryOfLatePaymentChargesAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesAmount_71e9c8d9-3628-4612-8208-7185c940be28" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesReturnOnEquityThresholdRate_617d0ace-2beb-4516-a0c8-f06f3f164b25" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesRecoveryOfLatePaymentChargesReturnOnEquityThresholdRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_ed_PublicUtilitiesRecoveryOfLatePaymentChargesReturnOnEquityThresholdRate_617d0ace-2beb-4516-a0c8-f06f3f164b25" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_5cb5dc1a-f28b-4479-8b7d-28c2352ade6d" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_35ee07af-dd75-4cbd-96d3-06eb815bd6a0" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_srt_ProductOrServiceAxis_35ee07af-dd75-4cbd-96d3-06eb815bd6a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_35ee07af-dd75-4cbd-96d3-06eb815bd6a0_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_35ee07af-dd75-4cbd-96d3-06eb815bd6a0" xlink:to="loc_srt_ProductsAndServicesDomain_35ee07af-dd75-4cbd-96d3-06eb815bd6a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_4f884a73-aead-4ef9-a439-81fa595923b8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_35ee07af-dd75-4cbd-96d3-06eb815bd6a0" xlink:to="loc_srt_ProductsAndServicesDomain_4f884a73-aead-4ef9-a439-81fa595923b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EnergyEfficiencyMember_862f83d9-096a-4a8b-8a5d-9dbb1b0529fb" xlink:href="ed-20221231.xsd#ed_EnergyEfficiencyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4f884a73-aead-4ef9-a439-81fa595923b8" xlink:to="loc_ed_EnergyEfficiencyMember_862f83d9-096a-4a8b-8a5d-9dbb1b0529fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ServiceTerminationMember_b23268a5-e435-43a4-83dc-22885f0ec61d" xlink:href="ed-20221231.xsd#ed_ServiceTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4f884a73-aead-4ef9-a439-81fa595923b8" xlink:to="loc_ed_ServiceTerminationMember_b23268a5-e435-43a4-83dc-22885f0ec61d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_92540e67-4806-44c2-a32f-c46385fb8d95" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_dei_LegalEntityAxis_92540e67-4806-44c2-a32f-c46385fb8d95" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_92540e67-4806-44c2-a32f-c46385fb8d95_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_92540e67-4806-44c2-a32f-c46385fb8d95" xlink:to="loc_dei_EntityDomain_92540e67-4806-44c2-a32f-c46385fb8d95_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_345829e6-5e76-4670-9de7-00658106674e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_92540e67-4806-44c2-a32f-c46385fb8d95" xlink:to="loc_dei_EntityDomain_345829e6-5e76-4670-9de7-00658106674e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_b39a2b85-6cf8-4506-aca5-547057c8eecd" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_345829e6-5e76-4670-9de7-00658106674e" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_b39a2b85-6cf8-4506-aca5-547057c8eecd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_4fd7e143-6754-42f0-aeb5-76765e2a9210" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_us-gaap_PublicUtilityAxis_4fd7e143-6754-42f0-aeb5-76765e2a9210" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_4fd7e143-6754-42f0-aeb5-76765e2a9210_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_4fd7e143-6754-42f0-aeb5-76765e2a9210" xlink:to="loc_us-gaap_UtilityPlantDomain_4fd7e143-6754-42f0-aeb5-76765e2a9210_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_415b2860-daed-4c88-9ad4-0d2900638aa9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_4fd7e143-6754-42f0-aeb5-76765e2a9210" xlink:to="loc_us-gaap_UtilityPlantDomain_415b2860-daed-4c88-9ad4-0d2900638aa9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_68b5a2a6-f0bf-4e54-90af-6606585e6e96" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_415b2860-daed-4c88-9ad4-0d2900638aa9" xlink:to="loc_us-gaap_GasTransmissionMember_68b5a2a6-f0bf-4e54-90af-6606585e6e96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_12ea5fc4-949e-413e-b3b2-fb4772905f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_12ea5fc4-949e-413e-b3b2-fb4772905f7a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_12ea5fc4-949e-413e-b3b2-fb4772905f7a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_12ea5fc4-949e-413e-b3b2-fb4772905f7a" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_12ea5fc4-949e-413e-b3b2-fb4772905f7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_accaf515-f1ec-4c11-b14d-be3b595fbbcb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_12ea5fc4-949e-413e-b3b2-fb4772905f7a" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_accaf515-f1ec-4c11-b14d-be3b595fbbcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_75416548-2b38-4e26-af35-b02c64497234" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_accaf515-f1ec-4c11-b14d-be3b595fbbcb" xlink:to="loc_ed_RatePlanforYear1Member_75416548-2b38-4e26-af35-b02c64497234" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_6140f5b0-a00e-435b-b892-6d34f30dd87a" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_accaf515-f1ec-4c11-b14d-be3b595fbbcb" xlink:to="loc_ed_RatePlanforYear2Member_6140f5b0-a00e-435b-b892-6d34f30dd87a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear3Member_1a57fd14-c330-4dc3-99f3-ab133b01ea63" xlink:href="ed-20221231.xsd#ed_RatePlanforYear3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_accaf515-f1ec-4c11-b14d-be3b595fbbcb" xlink:to="loc_ed_RatePlanforYear3Member_1a57fd14-c330-4dc3-99f3-ab133b01ea63" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_1c1cca9a-5e0e-487b-b1e0-a66662718b5f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_srt_RangeAxis_1c1cca9a-5e0e-487b-b1e0-a66662718b5f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1c1cca9a-5e0e-487b-b1e0-a66662718b5f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1c1cca9a-5e0e-487b-b1e0-a66662718b5f" xlink:to="loc_srt_RangeMember_1c1cca9a-5e0e-487b-b1e0-a66662718b5f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6478a9d2-7ff5-481f-9497-4369bee6d9e5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1c1cca9a-5e0e-487b-b1e0-a66662718b5f" xlink:to="loc_srt_RangeMember_6478a9d2-7ff5-481f-9497-4369bee6d9e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_8157d5a3-c1e7-4b60-b85d-9c3690409a38" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6478a9d2-7ff5-481f-9497-4369bee6d9e5" xlink:to="loc_srt_MaximumMember_8157d5a3-c1e7-4b60-b85d-9c3690409a38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_48cb851f-6463-40c3-91dc-a9f82215a420" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_srt_MajorCustomersAxis_48cb851f-6463-40c3-91dc-a9f82215a420" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_48cb851f-6463-40c3-91dc-a9f82215a420_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_48cb851f-6463-40c3-91dc-a9f82215a420" xlink:to="loc_srt_NameOfMajorCustomerDomain_48cb851f-6463-40c3-91dc-a9f82215a420_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_8ee3adf1-1c91-45f9-87e2-70edbe535c04" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_48cb851f-6463-40c3-91dc-a9f82215a420" xlink:to="loc_srt_NameOfMajorCustomerDomain_8ee3adf1-1c91-45f9-87e2-70edbe535c04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CustomersMember_0fe4d503-c797-4743-a54c-881ed2572807" xlink:href="ed-20221231.xsd#ed_CustomersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_8ee3adf1-1c91-45f9-87e2-70edbe535c04" xlink:to="loc_ed_CustomersMember_0fe4d503-c797-4743-a54c-881ed2572807" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_e49d1619-789b-486f-994a-ec03a67a0cc0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_us-gaap_RegulatoryAssetAxis_e49d1619-789b-486f-994a-ec03a67a0cc0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_e49d1619-789b-486f-994a-ec03a67a0cc0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_e49d1619-789b-486f-994a-ec03a67a0cc0" xlink:to="loc_us-gaap_RegulatoryAssetDomain_e49d1619-789b-486f-994a-ec03a67a0cc0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_1c280e6e-d22e-4173-8658-a21524d7ca3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_e49d1619-789b-486f-994a-ec03a67a0cc0" xlink:to="loc_us-gaap_RegulatoryAssetDomain_1c280e6e-d22e-4173-8658-a21524d7ca3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_6e6369af-c629-4d33-a06f-8695e694d323" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdvancedMeteringInfrastructureCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_1c280e6e-d22e-4173-8658-a21524d7ca3b" xlink:to="loc_us-gaap_AdvancedMeteringInfrastructureCostsMember_6e6369af-c629-4d33-a06f-8695e694d323" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_af90c635-24d6-4a5c-af12-a3a8d2a458b6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_srt_StatementScenarioAxis_af90c635-24d6-4a5c-af12-a3a8d2a458b6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_af90c635-24d6-4a5c-af12-a3a8d2a458b6_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_af90c635-24d6-4a5c-af12-a3a8d2a458b6" xlink:to="loc_srt_ScenarioUnspecifiedDomain_af90c635-24d6-4a5c-af12-a3a8d2a458b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_029645dc-2fb1-4c78-b309-53d548811b42" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_af90c635-24d6-4a5c-af12-a3a8d2a458b6" xlink:to="loc_srt_ScenarioUnspecifiedDomain_029645dc-2fb1-4c78-b309-53d548811b42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_c3a2af60-dad2-4266-a83e-0687987a0f41" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_029645dc-2fb1-4c78-b309-53d548811b42" xlink:to="loc_srt_ScenarioForecastMember_c3a2af60-dad2-4266-a83e-0687987a0f41" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_056208e4-3539-44fc-8faf-249e294e7420" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_aecf4ca2-a2ad-43b0-844f-240412f27f52" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_056208e4-3539-44fc-8faf-249e294e7420" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_056208e4-3539-44fc-8faf-249e294e7420_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_056208e4-3539-44fc-8faf-249e294e7420" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_056208e4-3539-44fc-8faf-249e294e7420_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_b0323bb6-6de1-45d2-8a02-6df544bf59a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_056208e4-3539-44fc-8faf-249e294e7420" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_b0323bb6-6de1-45d2-8a02-6df544bf59a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_a2157741-7f1b-4eac-8416-87b7d0fed2c8" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_b0323bb6-6de1-45d2-8a02-6df544bf59a6" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_a2157741-7f1b-4eac-8416-87b7d0fed2c8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansRECODetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersSummaryofUtilitiesRatePlansRECODetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersSummaryofUtilitiesRatePlansRECODetails" xlink:type="extended" id="i038ea9c91d2349bba7206ec2b71b24b9_RegulatoryMattersSummaryofUtilitiesRatePlansRECODetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BaseRateIncreaseDecrease_1445e6a0-ff4e-45d9-b2cf-9917deb8da47" xlink:href="ed-20221231.xsd#ed_BaseRateIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_BaseRateIncreaseDecrease_1445e6a0-ff4e-45d9-b2cf-9917deb8da47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_1f1d9618-8689-4682-8f14-727158efada1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization_1f1d9618-8689-4682-8f14-727158efada1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAmortizationPeriod_5bdd0806-330f-445e-be94-697e1b123e06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_us-gaap_RegulatoryLiabilityAmortizationPeriod_5bdd0806-330f-445e-be94-697e1b123e06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfRegulatoryAsset_d1113aa4-d4cf-4cf1-9fbe-0e2f9bca5ec0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfRegulatoryAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_us-gaap_AmortizationOfRegulatoryAsset_d1113aa4-d4cf-4cf1-9fbe-0e2f9bca5ec0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAmortizationPeriod_155b2a6b-68e2-43c0-a435-1954df4e20b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_us-gaap_RegulatoryAssetAmortizationPeriod_155b2a6b-68e2-43c0-a435-1954df4e20b9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryMattersAverageBaseRate_3377ba47-8be5-406c-bec1-7cb497b93883" xlink:href="ed-20221231.xsd#ed_RegulatoryMattersAverageBaseRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_RegulatoryMattersAverageBaseRate_3377ba47-8be5-406c-bec1-7cb497b93883" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageCostOfCapital_bbc2d1cd-7712-46bb-a101-c28cdc2dfda2" xlink:href="ed-20221231.xsd#ed_WeightedAverageCostOfCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_WeightedAverageCostOfCapital_bbc2d1cd-7712-46bb-a101-c28cdc2dfda2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_61b7a332-5403-4a3d-a14d-94e594c1b461" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage_61b7a332-5403-4a3d-a14d-94e594c1b461" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesReturnonEquityPercentage_062f5769-7e2b-4f74-9c5f-5f89a28928ad" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesReturnonEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_PublicUtilitiesReturnonEquityPercentage_062f5769-7e2b-4f74-9c5f-5f89a28928ad" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PercentageOfDebtSecuritiesAmortizedCostBased_ecd8ecc8-358e-4ce3-890d-8c2579f1d66a" xlink:href="ed-20221231.xsd#ed_PercentageOfDebtSecuritiesAmortizedCostBased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_PercentageOfDebtSecuritiesAmortizedCostBased_ecd8ecc8-358e-4ce3-890d-8c2579f1d66a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonEquityRatioPercentage_e15df970-5f76-4aed-8b84-fd8d4334196e" xlink:href="ed-20221231.xsd#ed_CommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_CommonEquityRatioPercentage_e15df970-5f76-4aed-8b84-fd8d4334196e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPlanAmount_82f348ef-5545-4012-8e63-6db08d74b46b" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPlanAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_PublicUtilitiesPlanAmount_82f348ef-5545-4012-8e63-6db08d74b46b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPlanPeriod_2560138e-a550-4993-b8fb-aec280832bf6" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPlanPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_ed_PublicUtilitiesPlanPeriod_2560138e-a550-4993-b8fb-aec280832bf6" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_15bc45d2-5156-4d77-b611-e4af7dd61dde" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_e1b98cfc-9844-4cfb-8aed-0c958aa8a830" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_15bc45d2-5156-4d77-b611-e4af7dd61dde" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_336d1617-43cf-4aa7-84ec-464cba450edc" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_15bc45d2-5156-4d77-b611-e4af7dd61dde" xlink:to="loc_dei_LegalEntityAxis_336d1617-43cf-4aa7-84ec-464cba450edc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_336d1617-43cf-4aa7-84ec-464cba450edc_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_336d1617-43cf-4aa7-84ec-464cba450edc" xlink:to="loc_dei_EntityDomain_336d1617-43cf-4aa7-84ec-464cba450edc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5f4cd8b7-daae-43c7-840c-22094f5686ac" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_336d1617-43cf-4aa7-84ec-464cba450edc" xlink:to="loc_dei_EntityDomain_5f4cd8b7-daae-43c7-840c-22094f5686ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RocklandElectricCompanyMember_9d3611a2-7500-4540-8bee-3cb26fe6ccae" xlink:href="ed-20221231.xsd#ed_RocklandElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5f4cd8b7-daae-43c7-840c-22094f5686ac" xlink:to="loc_ed_RocklandElectricCompanyMember_9d3611a2-7500-4540-8bee-3cb26fe6ccae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_0bb586d0-5d8a-424c-b37e-bb55d0e2e2e4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_15bc45d2-5156-4d77-b611-e4af7dd61dde" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_0bb586d0-5d8a-424c-b37e-bb55d0e2e2e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_0bb586d0-5d8a-424c-b37e-bb55d0e2e2e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_0bb586d0-5d8a-424c-b37e-bb55d0e2e2e4" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_0bb586d0-5d8a-424c-b37e-bb55d0e2e2e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_e8972d93-74a3-42fc-b14e-2ed494db80fc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_0bb586d0-5d8a-424c-b37e-bb55d0e2e2e4" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_e8972d93-74a3-42fc-b14e-2ed494db80fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear1Member_ce7ebc50-4f25-4643-bc4c-36bd553f872e" xlink:href="ed-20221231.xsd#ed_RatePlanforYear1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_e8972d93-74a3-42fc-b14e-2ed494db80fc" xlink:to="loc_ed_RatePlanforYear1Member_ce7ebc50-4f25-4643-bc4c-36bd553f872e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RatePlanforYear2Member_cb2a649c-6bf5-4e16-b6af-a4c7c5dc0f32" xlink:href="ed-20221231.xsd#ed_RatePlanforYear2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_e8972d93-74a3-42fc-b14e-2ed494db80fc" xlink:to="loc_ed_RatePlanforYear2Member_cb2a649c-6bf5-4e16-b6af-a4c7c5dc0f32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Period1Member_7c32a62f-e9f2-4546-8b1c-b514ed6a3cd5" xlink:href="ed-20221231.xsd#ed_Period1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_e8972d93-74a3-42fc-b14e-2ed494db80fc" xlink:to="loc_ed_Period1Member_7c32a62f-e9f2-4546-8b1c-b514ed6a3cd5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Period2Member_fbea2179-eaf4-47f9-935c-f571482c5627" xlink:href="ed-20221231.xsd#ed_Period2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_e8972d93-74a3-42fc-b14e-2ed494db80fc" xlink:to="loc_ed_Period2Member_fbea2179-eaf4-47f9-935c-f571482c5627" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_e92b352d-eebd-4eb1-b51e-541dfd42b93d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_15bc45d2-5156-4d77-b611-e4af7dd61dde" xlink:to="loc_us-gaap_PublicUtilityAxis_e92b352d-eebd-4eb1-b51e-541dfd42b93d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_e92b352d-eebd-4eb1-b51e-541dfd42b93d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_e92b352d-eebd-4eb1-b51e-541dfd42b93d" xlink:to="loc_us-gaap_UtilityPlantDomain_e92b352d-eebd-4eb1-b51e-541dfd42b93d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_71623a4e-2fc6-41f7-8b1d-6f96959be06c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_e92b352d-eebd-4eb1-b51e-541dfd42b93d" xlink:to="loc_us-gaap_UtilityPlantDomain_71623a4e-2fc6-41f7-8b1d-6f96959be06c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_07560e27-472b-4922-9cfb-519b304b7e99" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_71623a4e-2fc6-41f7-8b1d-6f96959be06c" xlink:to="loc_us-gaap_ElectricTransmissionMember_07560e27-472b-4922-9cfb-519b304b7e99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_fa83d921-9bb9-4434-bbca-1cf7c5079579" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_15bc45d2-5156-4d77-b611-e4af7dd61dde" xlink:to="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_fa83d921-9bb9-4434-bbca-1cf7c5079579" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CatastrophicEventDomain_fa83d921-9bb9-4434-bbca-1cf7c5079579_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CatastrophicEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_fa83d921-9bb9-4434-bbca-1cf7c5079579" xlink:to="loc_us-gaap_CatastrophicEventDomain_fa83d921-9bb9-4434-bbca-1cf7c5079579_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CatastrophicEventDomain_8912dc6c-907b-49e8-90e0-e55406a141b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CatastrophicEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_fa83d921-9bb9-4434-bbca-1cf7c5079579" xlink:to="loc_us-gaap_CatastrophicEventDomain_8912dc6c-907b-49e8-90e0-e55406a141b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TropicalStormHenriMember_31e0f38c-0c5b-4892-8451-1d8eb167639a" xlink:href="ed-20221231.xsd#ed_TropicalStormHenriMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CatastrophicEventDomain_8912dc6c-907b-49e8-90e0-e55406a141b9" xlink:to="loc_ed_TropicalStormHenriMember_31e0f38c-0c5b-4892-8451-1d8eb167639a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersRECONarrativeDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersRECONarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersRECONarrativeDetails" xlink:type="extended" id="id1588053676a49c3aa6a86edbce79a9a_RegulatoryMattersRECONarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_de7f9672-ffc3-4faf-b15b-de6aeb21e89b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:to="loc_us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount_de7f9672-ffc3-4faf-b15b-de6aeb21e89b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage_625e49f5-c147-4348-8cc1-2fc966aa1196" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:to="loc_us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage_625e49f5-c147-4348-8cc1-2fc966aa1196" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesCommonEquityRatioPercentage_8f615327-6919-4e98-b370-bff6661072e2" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesCommonEquityRatioPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:to="loc_ed_PublicUtilitiesCommonEquityRatioPercentage_8f615327-6919-4e98-b370-bff6661072e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesInfrastructureInvestmentPlan_8c7aea6e-128e-4e2c-8b4c-900f8eef0384" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesInfrastructureInvestmentPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:to="loc_ed_PublicUtilitiesInfrastructureInvestmentPlan_8c7aea6e-128e-4e2c-8b4c-900f8eef0384" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesInfrastructureInvestmentPlanPeriod_c17364e7-3b28-4c7b-bcb3-d244a874ec43" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesInfrastructureInvestmentPlanPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:to="loc_ed_PublicUtilitiesInfrastructureInvestmentPlanPeriod_c17364e7-3b28-4c7b-bcb3-d244a874ec43" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ae1bd7ed-64c4-456b-9316-3adb9383e530" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_a80b6c4a-ac74-488f-87f8-3f0295d61ddf" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ae1bd7ed-64c4-456b-9316-3adb9383e530" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_a6196984-ee43-4e28-b646-26bb8473d42d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ae1bd7ed-64c4-456b-9316-3adb9383e530" xlink:to="loc_us-gaap_PublicUtilityAxis_a6196984-ee43-4e28-b646-26bb8473d42d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_a6196984-ee43-4e28-b646-26bb8473d42d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_a6196984-ee43-4e28-b646-26bb8473d42d" xlink:to="loc_us-gaap_UtilityPlantDomain_a6196984-ee43-4e28-b646-26bb8473d42d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_148907ed-dfb7-44d7-9de1-145b2f33ca74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_a6196984-ee43-4e28-b646-26bb8473d42d" xlink:to="loc_us-gaap_UtilityPlantDomain_148907ed-dfb7-44d7-9de1-145b2f33ca74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_1d150345-1da5-449d-b483-b64e0151660e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_148907ed-dfb7-44d7-9de1-145b2f33ca74" xlink:to="loc_us-gaap_ElectricTransmissionMember_1d150345-1da5-449d-b483-b64e0151660e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ed9dbba6-d1fc-4c99-94a0-b037866efe11" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ae1bd7ed-64c4-456b-9316-3adb9383e530" xlink:to="loc_dei_LegalEntityAxis_ed9dbba6-d1fc-4c99-94a0-b037866efe11" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ed9dbba6-d1fc-4c99-94a0-b037866efe11_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ed9dbba6-d1fc-4c99-94a0-b037866efe11" xlink:to="loc_dei_EntityDomain_ed9dbba6-d1fc-4c99-94a0-b037866efe11_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6601fd2a-3d24-4b3a-9c9e-3ee818c9b191" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ed9dbba6-d1fc-4c99-94a0-b037866efe11" xlink:to="loc_dei_EntityDomain_6601fd2a-3d24-4b3a-9c9e-3ee818c9b191" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RocklandElectricCompanyMember_ecd2c1cd-a6d6-4357-867c-a78191c4779b" xlink:href="ed-20221231.xsd#ed_RocklandElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6601fd2a-3d24-4b3a-9c9e-3ee818c9b191" xlink:to="loc_ed_RocklandElectricCompanyMember_ecd2c1cd-a6d6-4357-867c-a78191c4779b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_3ad6d92b-7540-4c82-ae1b-971c746f4bce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_ae1bd7ed-64c4-456b-9316-3adb9383e530" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_3ad6d92b-7540-4c82-ae1b-971c746f4bce" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_3ad6d92b-7540-4c82-ae1b-971c746f4bce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_3ad6d92b-7540-4c82-ae1b-971c746f4bce" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_3ad6d92b-7540-4c82-ae1b-971c746f4bce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_a18b480a-86f3-4a97-9733-32f2c4755c8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_3ad6d92b-7540-4c82-ae1b-971c746f4bce" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_a18b480a-86f3-4a97-9733-32f2c4755c8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewJerseyBoardOfPublicUtilitiesMember_2c2d6d79-97d0-4105-a066-81e34436a9d8" xlink:href="ed-20221231.xsd#ed_NewJerseyBoardOfPublicUtilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_a18b480a-86f3-4a97-9733-32f2c4755c8e" xlink:to="loc_ed_NewJerseyBoardOfPublicUtilitiesMember_2c2d6d79-97d0-4105-a066-81e34436a9d8" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersCOVID19RegulatoryMattersDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersCOVID19RegulatoryMattersDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersCOVID19RegulatoryMattersDetails" xlink:type="extended" id="iba569b6a9cb643af93103241e02830c8_RegulatoryMattersCOVID19RegulatoryMattersDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFees_e2545584-aa9b-4c64-8a58-d4a53f827e9b" xlink:href="ed-20221231.xsd#ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFees_e2545584-aa9b-4c64-8a58-d4a53f827e9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFeesReserve_db38e988-ffd6-44e3-9e29-0f78e5fd261a" xlink:href="ed-20221231.xsd#ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFeesReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFeesReserve_db38e988-ffd6-44e3-9e29-0f78e5fd261a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_1e161238-16be-4fb0-93ef-a8056a37320b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_1e161238-16be-4fb0-93ef-a8056a37320b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_f46c8f69-07e3-4280-9d48-4e1cb2d0ca0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_f46c8f69-07e3-4280-9d48-4e1cb2d0ca0e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ContractWithCustomerReceivableExpectedAmount_f179265a-09d3-4ec4-b136-003b24b77ce2" xlink:href="ed-20221231.xsd#ed_ContractWithCustomerReceivableExpectedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_ed_ContractWithCustomerReceivableExpectedAmount_f179265a-09d3-4ec4-b136-003b24b77ce2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ContractWithCustomerCostOfProgramRecoveryPeriod_0d1a916b-c40e-4808-b0d1-169e6a39f8f0" xlink:href="ed-20221231.xsd#ed_ContractWithCustomerCostOfProgramRecoveryPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_ed_ContractWithCustomerCostOfProgramRecoveryPeriod_0d1a916b-c40e-4808-b0d1-169e6a39f8f0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GovernmentAssistanceAmount_91532525-0115-417b-b862-1f13c16910a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GovernmentAssistanceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_GovernmentAssistanceAmount_91532525-0115-417b-b862-1f13c16910a5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GovernmentAssistanceTransactionDuration_93e59c29-f7d0-441f-a426-88886fa00c14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GovernmentAssistanceTransactionDuration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_GovernmentAssistanceTransactionDuration_93e59c29-f7d0-441f-a426-88886fa00c14" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_3be94b9c-5d25-4546-816e-38052509429e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_3be94b9c-5d25-4546-816e-38052509429e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_9eca77ea-282e-48f5-a52a-31c97a06bae4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_9eca77ea-282e-48f5-a52a-31c97a06bae4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCredits_f79b6418-65e2-44ac-ae9c-e96e6c43abe4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationTaxCredits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCredits_f79b6418-65e2-44ac-ae9c-e96e6c43abe4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SuspensionPeriodOfResidentialTerminations_317be48b-382f-4a30-b503-e282bc5110c2" xlink:href="ed-20221231.xsd#ed_SuspensionPeriodOfResidentialTerminations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_ed_SuspensionPeriodOfResidentialTerminations_317be48b-382f-4a30-b503-e282bc5110c2" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCostsCurrentAndNoncurrent_58520939-2f2a-4d6f-b98f-22139c0c7a42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCostsCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_DeferredCostsCurrentAndNoncurrent_58520939-2f2a-4d6f-b98f-22139c0c7a42" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GovernmentAssistanceStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag_b4676e17-1a2e-41c9-a0ea-d3957b1b035e" xlink:href="ed-20221231.xsd#ed_GovernmentAssistanceStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_ed_GovernmentAssistanceStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag_b4676e17-1a2e-41c9-a0ea-d3957b1b035e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_12d23d72-c040-4c9a-a668-0f2ea583af24" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProgramAxis_b93256ee-ff05-4e97-8a72-12b95b13750b" xlink:href="ed-20221231.xsd#ed_ProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_ed_ProgramAxis_b93256ee-ff05-4e97-8a72-12b95b13750b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProgramDomain_b93256ee-ff05-4e97-8a72-12b95b13750b_default" xlink:href="ed-20221231.xsd#ed_ProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_ProgramAxis_b93256ee-ff05-4e97-8a72-12b95b13750b" xlink:to="loc_ed_ProgramDomain_b93256ee-ff05-4e97-8a72-12b95b13750b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProgramDomain_f7790a8d-e13c-4230-a83c-b9b6707b2dde" xlink:href="ed-20221231.xsd#ed_ProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_ProgramAxis_b93256ee-ff05-4e97-8a72-12b95b13750b" xlink:to="loc_ed_ProgramDomain_f7790a8d-e13c-4230-a83c-b9b6707b2dde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SummerCoolingCreditProgramMember_6541d6af-17e6-4b04-bde2-502639a0b4e8" xlink:href="ed-20221231.xsd#ed_SummerCoolingCreditProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_ProgramDomain_f7790a8d-e13c-4230-a83c-b9b6707b2dde" xlink:to="loc_ed_SummerCoolingCreditProgramMember_6541d6af-17e6-4b04-bde2-502639a0b4e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_8659e088-5050-4cf7-8bdb-582dd4b52a36" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_srt_MajorCustomersAxis_8659e088-5050-4cf7-8bdb-582dd4b52a36" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_8659e088-5050-4cf7-8bdb-582dd4b52a36_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_8659e088-5050-4cf7-8bdb-582dd4b52a36" xlink:to="loc_srt_NameOfMajorCustomerDomain_8659e088-5050-4cf7-8bdb-582dd4b52a36_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_6c868184-8d76-444c-81ef-6ad49dce0594" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_8659e088-5050-4cf7-8bdb-582dd4b52a36" xlink:to="loc_srt_NameOfMajorCustomerDomain_6c868184-8d76-444c-81ef-6ad49dce0594" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ResidentialCustomersMember_035319be-bf62-4f94-8381-b437aa0d68d2" xlink:href="ed-20221231.xsd#ed_ResidentialCustomersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_6c868184-8d76-444c-81ef-6ad49dce0594" xlink:to="loc_ed_ResidentialCustomersMember_035319be-bf62-4f94-8381-b437aa0d68d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_30c6ac41-85a3-487b-b369-de0c5d8d956c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_30c6ac41-85a3-487b-b369-de0c5d8d956c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_30c6ac41-85a3-487b-b369-de0c5d8d956c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_30c6ac41-85a3-487b-b369-de0c5d8d956c" xlink:to="loc_us-gaap_LossContingencyNatureDomain_30c6ac41-85a3-487b-b369-de0c5d8d956c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_48402730-dadd-473b-b3ec-0731fb82599f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_30c6ac41-85a3-487b-b369-de0c5d8d956c" xlink:to="loc_us-gaap_LossContingencyNatureDomain_48402730-dadd-473b-b3ec-0731fb82599f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_COVID19Member_13c15a27-d067-4e73-b929-d38e9967b717" xlink:href="ed-20221231.xsd#ed_COVID19Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_48402730-dadd-473b-b3ec-0731fb82599f" xlink:to="loc_ed_COVID19Member_13c15a27-d067-4e73-b929-d38e9967b717" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_81c437ae-fa74-4f49-91c9-00e1fe907dcd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_dei_LegalEntityAxis_81c437ae-fa74-4f49-91c9-00e1fe907dcd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_81c437ae-fa74-4f49-91c9-00e1fe907dcd_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_81c437ae-fa74-4f49-91c9-00e1fe907dcd" xlink:to="loc_dei_EntityDomain_81c437ae-fa74-4f49-91c9-00e1fe907dcd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c5e1f171-cbc2-4f1e-8692-79fbe73ab42b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_81c437ae-fa74-4f49-91c9-00e1fe907dcd" xlink:to="loc_dei_EntityDomain_c5e1f171-cbc2-4f1e-8692-79fbe73ab42b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_6a54fde8-6495-48ec-ad03-55dca82248d6" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c5e1f171-cbc2-4f1e-8692-79fbe73ab42b" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_6a54fde8-6495-48ec-ad03-55dca82248d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_1db4c481-b766-40aa-be7c-277642529425" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c5e1f171-cbc2-4f1e-8692-79fbe73ab42b" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_1db4c481-b766-40aa-be7c-277642529425" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyOfNewYorkIncAndOrangeAndRocklandUtilitiesIncMember_ff6a71d6-d00c-4e83-a0e9-4ec7880c969f" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyOfNewYorkIncAndOrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c5e1f171-cbc2-4f1e-8692-79fbe73ab42b" xlink:to="loc_ed_ConsolidatedEdisonCompanyOfNewYorkIncAndOrangeAndRocklandUtilitiesIncMember_ff6a71d6-d00c-4e83-a0e9-4ec7880c969f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_f56fdeb9-2ed7-4456-9cad-46131b92c4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_us-gaap_PublicUtilityAxis_f56fdeb9-2ed7-4456-9cad-46131b92c4d1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_f56fdeb9-2ed7-4456-9cad-46131b92c4d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_f56fdeb9-2ed7-4456-9cad-46131b92c4d1" xlink:to="loc_us-gaap_UtilityPlantDomain_f56fdeb9-2ed7-4456-9cad-46131b92c4d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_c0fe7abd-9520-4b4a-b06a-107ba7e0f740" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_f56fdeb9-2ed7-4456-9cad-46131b92c4d1" xlink:to="loc_us-gaap_UtilityPlantDomain_c0fe7abd-9520-4b4a-b06a-107ba7e0f740" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_fb08d7f0-56d1-4819-90e4-6be4226ce36a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c0fe7abd-9520-4b4a-b06a-107ba7e0f740" xlink:to="loc_us-gaap_ElectricTransmissionMember_fb08d7f0-56d1-4819-90e4-6be4226ce36a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_394516d2-a821-479d-b3b6-c66f74dd46c7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c0fe7abd-9520-4b4a-b06a-107ba7e0f740" xlink:to="loc_us-gaap_GasTransmissionMember_394516d2-a821-479d-b3b6-c66f74dd46c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricAndGasTransmissionProjectsMember_7ed6f03d-799c-44e3-b9f4-8fc37d204706" xlink:href="ed-20221231.xsd#ed_ElectricAndGasTransmissionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c0fe7abd-9520-4b4a-b06a-107ba7e0f740" xlink:to="loc_ed_ElectricAndGasTransmissionProjectsMember_7ed6f03d-799c-44e3-b9f4-8fc37d204706" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_7ebffa1b-01d8-48bd-99b3-6aa6335f66ee" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_srt_ConsolidatedEntitiesAxis_7ebffa1b-01d8-48bd-99b3-6aa6335f66ee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_7ebffa1b-01d8-48bd-99b3-6aa6335f66ee_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_7ebffa1b-01d8-48bd-99b3-6aa6335f66ee" xlink:to="loc_srt_ConsolidatedEntitiesDomain_7ebffa1b-01d8-48bd-99b3-6aa6335f66ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_ac75c618-1f14-42ec-9f3e-a56e481a7c14" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_7ebffa1b-01d8-48bd-99b3-6aa6335f66ee" xlink:to="loc_srt_ConsolidatedEntitiesDomain_ac75c618-1f14-42ec-9f3e-a56e481a7c14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_ec7b3e5f-2208-45ef-9df1-b86323ace782" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_ac75c618-1f14-42ec-9f3e-a56e481a7c14" xlink:to="loc_srt_SubsidiariesMember_ec7b3e5f-2208-45ef-9df1-b86323ace782" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_f4d55b54-1f2c-46eb-9c5c-b3c87f729aa8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_srt_StatementScenarioAxis_f4d55b54-1f2c-46eb-9c5c-b3c87f729aa8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_f4d55b54-1f2c-46eb-9c5c-b3c87f729aa8_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_f4d55b54-1f2c-46eb-9c5c-b3c87f729aa8" xlink:to="loc_srt_ScenarioUnspecifiedDomain_f4d55b54-1f2c-46eb-9c5c-b3c87f729aa8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_f431ee8e-1a2b-41b4-9a53-23dccbc70fd5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_f4d55b54-1f2c-46eb-9c5c-b3c87f729aa8" xlink:to="loc_srt_ScenarioUnspecifiedDomain_f431ee8e-1a2b-41b4-9a53-23dccbc70fd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_f47d246a-60b6-44ae-9352-3f471a7f2243" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_f431ee8e-1a2b-41b4-9a53-23dccbc70fd5" xlink:to="loc_srt_ScenarioForecastMember_f47d246a-60b6-44ae-9352-3f471a7f2243" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GovernmentAssistanceTypeAxis_0aa82f6f-dbab-4741-829c-978cee650c8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GovernmentAssistanceTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_us-gaap_GovernmentAssistanceTypeAxis_0aa82f6f-dbab-4741-829c-978cee650c8c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GovernmentAssistanceTypeDomain_0aa82f6f-dbab-4741-829c-978cee650c8c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GovernmentAssistanceTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GovernmentAssistanceTypeAxis_0aa82f6f-dbab-4741-829c-978cee650c8c" xlink:to="loc_us-gaap_GovernmentAssistanceTypeDomain_0aa82f6f-dbab-4741-829c-978cee650c8c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GovernmentAssistanceTypeDomain_1ef26bfd-f008-4ca7-8e22-b06c5c48a7a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GovernmentAssistanceTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GovernmentAssistanceTypeAxis_0aa82f6f-dbab-4741-829c-978cee650c8c" xlink:to="loc_us-gaap_GovernmentAssistanceTypeDomain_1ef26bfd-f008-4ca7-8e22-b06c5c48a7a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_COVID19ArrearsAssistanceProgramMember_4608e9c7-f159-4ceb-be2f-748abb2810b9" xlink:href="ed-20221231.xsd#ed_COVID19ArrearsAssistanceProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GovernmentAssistanceTypeDomain_1ef26bfd-f008-4ca7-8e22-b06c5c48a7a7" xlink:to="loc_ed_COVID19ArrearsAssistanceProgramMember_4608e9c7-f159-4ceb-be2f-748abb2810b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_9e469ef6-b981-4994-b9ad-3f2c24d61904" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_904563cb-42f8-48dc-9f61-6ae1d7f2c060" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_9e469ef6-b981-4994-b9ad-3f2c24d61904" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_9e469ef6-b981-4994-b9ad-3f2c24d61904_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_9e469ef6-b981-4994-b9ad-3f2c24d61904" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_9e469ef6-b981-4994-b9ad-3f2c24d61904_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f6dd53f0-9c81-409a-8d87-20be0085c720" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_9e469ef6-b981-4994-b9ad-3f2c24d61904" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f6dd53f0-9c81-409a-8d87-20be0085c720" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_c00109a9-6d7b-4643-80d3-11754ecd2ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_f6dd53f0-9c81-409a-8d87-20be0085c720" xlink:to="loc_us-gaap_SubsequentEventMember_c00109a9-6d7b-4643-80d3-11754ecd2ff5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersOtherRegulatoryMattersDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersOtherRegulatoryMattersDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersOtherRegulatoryMattersDetails" xlink:type="extended" id="i388f3c8f563f431bb0671b1dcec56ca8_RegulatoryMattersOtherRegulatoryMattersDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017IncomeTaxCredit_277b12b9-d0db-4a24-bc65-7cec31d43371" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017IncomeTaxCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_TaxCutsAndJobsActOf2017IncomeTaxCredit_277b12b9-d0db-4a24-bc65-7cec31d43371" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017NetBenefitAmortizationAllocationPeriod_3985aaa8-c033-44cd-a292-33fcc07cb21f" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017NetBenefitAmortizationAllocationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_TaxCutsAndJobsActOf2017NetBenefitAmortizationAllocationPeriod_3985aaa8-c033-44cd-a292-33fcc07cb21f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit_81a381ce-78ad-4437-b2b6-beeeefa99e35" xlink:href="ed-20221231.xsd#ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_TaxCutsAndJobsActOf2017ChangeInTaxRateRegulatoryLiabilitiesIncomeTaxBenefit_81a381ce-78ad-4437-b2b6-beeeefa99e35" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetRegulatoryAssets_3788f3fd-aa91-4a37-9fa9-3c1edc8158e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetRegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_us-gaap_NetRegulatoryAssets_3788f3fd-aa91-4a37-9fa9-3c1edc8158e6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesNumberOfCustomersAffected_d2837107-d8fc-490b-a8a3-09aa2aae774d" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesNumberOfCustomersAffected"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_PublicUtilitiesNumberOfCustomersAffected_d2837107-d8fc-490b-a8a3-09aa2aae774d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_a5509319-a196-42f5-a9a4-2fd3f5f124b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_a5509319-a196-42f5-a9a4-2fd3f5f124b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LitigationSettlementPeriod_a1844a76-0773-462d-8ccc-2cdfefb82c0d" xlink:href="ed-20221231.xsd#ed_LitigationSettlementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_LitigationSettlementPeriod_a1844a76-0773-462d-8ccc-2cdfefb82c0d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_75449fcf-aa50-4652-9502-2bd0a95d4c40" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_75449fcf-aa50-4652-9502-2bd0a95d4c40" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherCustomerProvidedCapitalRate_3b79ea35-b6b6-48bc-bb0f-009ed54bc88c" xlink:href="ed-20221231.xsd#ed_OtherCustomerProvidedCapitalRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_OtherCustomerProvidedCapitalRate_3b79ea35-b6b6-48bc-bb0f-009ed54bc88c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ReturnOnRegulatoryAssets_12c89993-8911-4189-89af-f56653695fcd" xlink:href="ed-20221231.xsd#ed_ReturnOnRegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_ReturnOnRegulatoryAssets_12c89993-8911-4189-89af-f56653695fcd" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryAssetsRecoveryPeriod_dba706b0-d4b6-4f7b-b8bb-b39dc9218a70" xlink:href="ed-20221231.xsd#ed_RegulatoryAssetsRecoveryPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_RegulatoryAssetsRecoveryPeriod_dba706b0-d4b6-4f7b-b8bb-b39dc9218a70" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryAssetsDeferredDerivativeLossesCurrentRecoveryPeriod_fcddc82f-0c1e-4fe4-aa81-448d67b052aa" xlink:href="ed-20221231.xsd#ed_RegulatoryAssetsDeferredDerivativeLossesCurrentRecoveryPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_RegulatoryAssetsDeferredDerivativeLossesCurrentRecoveryPeriod_fcddc82f-0c1e-4fe4-aa81-448d67b052aa" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryAssetsDeferredDerivativeLossesNoncurrentRecoveryPeriod_7b653302-39a4-4ed8-b0c8-e12823f2f9b7" xlink:href="ed-20221231.xsd#ed_RegulatoryAssetsDeferredDerivativeLossesNoncurrentRecoveryPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_ed_RegulatoryAssetsDeferredDerivativeLossesNoncurrentRecoveryPeriod_7b653302-39a4-4ed8-b0c8-e12823f2f9b7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesGeneralDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresLineItems_99fb020a-5224-488e-9130-5668619f5b39" xlink:to="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_deb8c527-5f3d-442a-9186-db1ea996bf96" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_deb8c527-5f3d-442a-9186-db1ea996bf96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_deb8c527-5f3d-442a-9186-db1ea996bf96_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_deb8c527-5f3d-442a-9186-db1ea996bf96" xlink:to="loc_us-gaap_LossContingencyNatureDomain_deb8c527-5f3d-442a-9186-db1ea996bf96_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_deb8c527-5f3d-442a-9186-db1ea996bf96" xlink:to="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ForegoneCustomerRecoveryMember_e820d68f-b535-4193-a139-5d2463690399" xlink:href="ed-20221231.xsd#ed_ForegoneCustomerRecoveryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:to="loc_ed_ForegoneCustomerRecoveryMember_e820d68f-b535-4193-a139-5d2463690399" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OngoingOperationsAndMaintenanceCostsMember_f29e3705-2ba0-4146-b5fe-4adc06158a33" xlink:href="ed-20221231.xsd#ed_OngoingOperationsAndMaintenanceCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:to="loc_ed_OngoingOperationsAndMaintenanceCostsMember_f29e3705-2ba0-4146-b5fe-4adc06158a33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PreviouslyIncurredOrAccruedCostsMember_15976534-a451-4b7f-9366-a32369dc82b5" xlink:href="ed-20221231.xsd#ed_PreviouslyIncurredOrAccruedCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:to="loc_ed_PreviouslyIncurredOrAccruedCostsMember_15976534-a451-4b7f-9366-a32369dc82b5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NegativeRevenueAdjustmentMember_9591ce67-879d-4fb8-aea6-61e170968de0" xlink:href="ed-20221231.xsd#ed_NegativeRevenueAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:to="loc_ed_NegativeRevenueAdjustmentMember_9591ce67-879d-4fb8-aea6-61e170968de0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CostsToReimburseCustomersForFoodAndMedicineSpoilageMember_e0cc6b3e-8f52-4e9c-8aab-d3f90a80a345" xlink:href="ed-20221231.xsd#ed_CostsToReimburseCustomersForFoodAndMedicineSpoilageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_efe946b3-7729-401d-a048-7cc6856fe05c" xlink:to="loc_ed_CostsToReimburseCustomersForFoodAndMedicineSpoilageMember_e0cc6b3e-8f52-4e9c-8aab-d3f90a80a345" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_26a776d5-8cda-425b-804b-363360e68ddd" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_srt_StatementGeographicalAxis_26a776d5-8cda-425b-804b-363360e68ddd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_26a776d5-8cda-425b-804b-363360e68ddd_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_26a776d5-8cda-425b-804b-363360e68ddd" xlink:to="loc_srt_SegmentGeographicalDomain_26a776d5-8cda-425b-804b-363360e68ddd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_13e78600-400c-4c49-bf2b-12982bd5965c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_26a776d5-8cda-425b-804b-363360e68ddd" xlink:to="loc_srt_SegmentGeographicalDomain_13e78600-400c-4c49-bf2b-12982bd5965c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ManhattanMember_84dff95e-bf1b-4eb9-b01a-35cda6f12eb3" xlink:href="ed-20221231.xsd#ed_ManhattanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_13e78600-400c-4c49-bf2b-12982bd5965c" xlink:to="loc_ed_ManhattanMember_84dff95e-bf1b-4eb9-b01a-35cda6f12eb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BrooklynMember_111f8ee4-00de-477e-afb2-eda933b939f5" xlink:href="ed-20221231.xsd#ed_BrooklynMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_13e78600-400c-4c49-bf2b-12982bd5965c" xlink:to="loc_ed_BrooklynMember_111f8ee4-00de-477e-afb2-eda933b939f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_27871256-a1e8-4048-9650-40905cf38f84" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_dei_LegalEntityAxis_27871256-a1e8-4048-9650-40905cf38f84" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_27871256-a1e8-4048-9650-40905cf38f84_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_27871256-a1e8-4048-9650-40905cf38f84" xlink:to="loc_dei_EntityDomain_27871256-a1e8-4048-9650-40905cf38f84_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_91735958-e6f5-4bab-8d4e-b757f6e06dea" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_27871256-a1e8-4048-9650-40905cf38f84" xlink:to="loc_dei_EntityDomain_91735958-e6f5-4bab-8d4e-b757f6e06dea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c819fb8c-0994-4ffa-8b46-21a45072cbac" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_91735958-e6f5-4bab-8d4e-b757f6e06dea" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c819fb8c-0994-4ffa-8b46-21a45072cbac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_73f9dd48-6c28-4c62-bb59-a25b1bf6fbde" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_91735958-e6f5-4bab-8d4e-b757f6e06dea" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_73f9dd48-6c28-4c62-bb59-a25b1bf6fbde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RocklandElectricCompanyMember_2619a59e-25f7-47a4-9033-f835a3f20dd7" xlink:href="ed-20221231.xsd#ed_RocklandElectricCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_91735958-e6f5-4bab-8d4e-b757f6e06dea" xlink:to="loc_ed_RocklandElectricCompanyMember_2619a59e-25f7-47a4-9033-f835a3f20dd7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_aa7042f8-5fb2-49b3-8f38-a8feeeb47a15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_aa7042f8-5fb2-49b3-8f38-a8feeeb47a15" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_aa7042f8-5fb2-49b3-8f38-a8feeeb47a15_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_aa7042f8-5fb2-49b3-8f38-a8feeeb47a15" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_aa7042f8-5fb2-49b3-8f38-a8feeeb47a15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_ec60659e-ce67-47f4-a7c3-a4e3788e35fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_aa7042f8-5fb2-49b3-8f38-a8feeeb47a15" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_ec60659e-ce67-47f4-a7c3-a4e3788e35fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NYSPSCMember_c153efd6-94ee-411f-8fda-38357b11e613" xlink:href="ed-20221231.xsd#ed_NYSPSCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_ec60659e-ce67-47f4-a7c3-a4e3788e35fe" xlink:to="loc_ed_NYSPSCMember_c153efd6-94ee-411f-8fda-38357b11e613" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_2bc97795-0c18-4529-8b57-09517f625570" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_us-gaap_PublicUtilityAxis_2bc97795-0c18-4529-8b57-09517f625570" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_2bc97795-0c18-4529-8b57-09517f625570_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_2bc97795-0c18-4529-8b57-09517f625570" xlink:to="loc_us-gaap_UtilityPlantDomain_2bc97795-0c18-4529-8b57-09517f625570_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_af641144-9f5b-486a-8f4c-a6de66922eab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_2bc97795-0c18-4529-8b57-09517f625570" xlink:to="loc_us-gaap_UtilityPlantDomain_af641144-9f5b-486a-8f4c-a6de66922eab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_1b4b4994-ffa1-4190-9f87-3ba1c954f9b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_af641144-9f5b-486a-8f4c-a6de66922eab" xlink:to="loc_us-gaap_ElectricTransmissionMember_1b4b4994-ffa1-4190-9f87-3ba1c954f9b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_5b94c010-70cf-4fe4-bec8-31ccc860225a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_af641144-9f5b-486a-8f4c-a6de66922eab" xlink:to="loc_us-gaap_GasTransmissionMember_5b94c010-70cf-4fe4-bec8-31ccc860225a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricAndGasTransmissionProjectsMember_567e2915-de0e-4f05-a271-d26b3bd2b654" xlink:href="ed-20221231.xsd#ed_ElectricAndGasTransmissionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_af641144-9f5b-486a-8f4c-a6de66922eab" xlink:to="loc_ed_ElectricAndGasTransmissionProjectsMember_567e2915-de0e-4f05-a271-d26b3bd2b654" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_2b47d178-d9ea-4f8e-af17-280ace610aeb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_2b47d178-d9ea-4f8e-af17-280ace610aeb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_2b47d178-d9ea-4f8e-af17-280ace610aeb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_2b47d178-d9ea-4f8e-af17-280ace610aeb" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_2b47d178-d9ea-4f8e-af17-280ace610aeb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_09291f37-b66e-4242-b46c-235b44bcea91" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_2b47d178-d9ea-4f8e-af17-280ace610aeb" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_09291f37-b66e-4242-b46c-235b44bcea91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ProtectedPortionMember_ab214d88-21d5-4e6e-a474-e6869379138a" xlink:href="ed-20221231.xsd#ed_ProtectedPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_09291f37-b66e-4242-b46c-235b44bcea91" xlink:to="loc_ed_ProtectedPortionMember_ab214d88-21d5-4e6e-a474-e6869379138a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnprotectedPortionMember_0f39bb08-8464-47c4-b70f-3c524bb814bd" xlink:href="ed-20221231.xsd#ed_UnprotectedPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_09291f37-b66e-4242-b46c-235b44bcea91" xlink:to="loc_ed_UnprotectedPortionMember_0f39bb08-8464-47c4-b70f-3c524bb814bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NetUnbilledRevenueDeferralsMember_3afc5ff1-819d-41d1-8001-e0fc45d479d3" xlink:href="ed-20221231.xsd#ed_NetUnbilledRevenueDeferralsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_09291f37-b66e-4242-b46c-235b44bcea91" xlink:to="loc_ed_NetUnbilledRevenueDeferralsMember_3afc5ff1-819d-41d1-8001-e0fc45d479d3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_589062db-faa1-48a9-9b79-cf95aac4b773" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_srt_ProductOrServiceAxis_589062db-faa1-48a9-9b79-cf95aac4b773" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_589062db-faa1-48a9-9b79-cf95aac4b773_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_589062db-faa1-48a9-9b79-cf95aac4b773" xlink:to="loc_srt_ProductsAndServicesDomain_589062db-faa1-48a9-9b79-cf95aac4b773_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_76739ae1-a7d6-4d84-8c26-4a40050f1486" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_589062db-faa1-48a9-9b79-cf95aac4b773" xlink:to="loc_srt_ProductsAndServicesDomain_76739ae1-a7d6-4d84-8c26-4a40050f1486" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SteamMember_432816cd-eba9-4d80-b64d-db30b5b878cc" xlink:href="ed-20221231.xsd#ed_SteamMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_76739ae1-a7d6-4d84-8c26-4a40050f1486" xlink:to="loc_ed_SteamMember_432816cd-eba9-4d80-b64d-db30b5b878cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_12c24f07-99ff-41c5-85cc-434cb04ab24c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_12c24f07-99ff-41c5-85cc-434cb04ab24c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CatastrophicEventDomain_12c24f07-99ff-41c5-85cc-434cb04ab24c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CatastrophicEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_12c24f07-99ff-41c5-85cc-434cb04ab24c" xlink:to="loc_us-gaap_CatastrophicEventDomain_12c24f07-99ff-41c5-85cc-434cb04ab24c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CatastrophicEventDomain_3e456c4f-d513-426b-8104-00aba8d327fb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CatastrophicEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_12c24f07-99ff-41c5-85cc-434cb04ab24c" xlink:to="loc_us-gaap_CatastrophicEventDomain_3e456c4f-d513-426b-8104-00aba8d327fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TropicalStormMember_fc1052ca-ecc2-4aeb-9d03-46339cc00de6" xlink:href="ed-20221231.xsd#ed_TropicalStormMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CatastrophicEventDomain_3e456c4f-d513-426b-8104-00aba8d327fb" xlink:to="loc_ed_TropicalStormMember_fc1052ca-ecc2-4aeb-9d03-46339cc00de6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RaineyOutagesMember_847784c6-2ec3-4493-a875-a482d3016f88" xlink:href="ed-20221231.xsd#ed_RaineyOutagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CatastrophicEventDomain_3e456c4f-d513-426b-8104-00aba8d327fb" xlink:to="loc_ed_RaineyOutagesMember_847784c6-2ec3-4493-a875-a482d3016f88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_A2019ManhattanAndBrooklynOutagesMember_4e875fdb-09cd-45ad-8ac0-33a4458cfdb8" xlink:href="ed-20221231.xsd#ed_A2019ManhattanAndBrooklynOutagesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CatastrophicEventDomain_3e456c4f-d513-426b-8104-00aba8d327fb" xlink:to="loc_ed_A2019ManhattanAndBrooklynOutagesMember_4e875fdb-09cd-45ad-8ac0-33a4458cfdb8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_8e95659b-953a-4222-9e64-5b40123ef1da" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_srt_ConsolidatedEntitiesAxis_8e95659b-953a-4222-9e64-5b40123ef1da" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_8e95659b-953a-4222-9e64-5b40123ef1da_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_8e95659b-953a-4222-9e64-5b40123ef1da" xlink:to="loc_srt_ConsolidatedEntitiesDomain_8e95659b-953a-4222-9e64-5b40123ef1da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_7cf6e110-6fc4-491e-8f36-6c84475cbddb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_8e95659b-953a-4222-9e64-5b40123ef1da" xlink:to="loc_srt_ConsolidatedEntitiesDomain_7cf6e110-6fc4-491e-8f36-6c84475cbddb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_b7e2ce11-7d97-4d72-93ba-88835df69bc0" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_7cf6e110-6fc4-491e-8f36-6c84475cbddb" xlink:to="loc_srt_SubsidiariesMember_b7e2ce11-7d97-4d72-93ba-88835df69bc0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_258a0015-3813-4c05-b405-8f1063a76fd7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PublicUtilitiesGeneralDisclosuresTable_074afdbc-6141-4c4b-b369-2254f408a1eb" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_258a0015-3813-4c05-b405-8f1063a76fd7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_258a0015-3813-4c05-b405-8f1063a76fd7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_258a0015-3813-4c05-b405-8f1063a76fd7" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_258a0015-3813-4c05-b405-8f1063a76fd7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_06f8310f-e704-49ec-8fd2-42288efb6131" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_258a0015-3813-4c05-b405-8f1063a76fd7" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_06f8310f-e704-49ec-8fd2-42288efb6131" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FairValueCommodityMember_b45c65ca-ca1e-40d4-8264-856ac0c5f1d4" xlink:href="ed-20221231.xsd#ed_FairValueCommodityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_06f8310f-e704-49ec-8fd2-42288efb6131" xlink:to="loc_ed_FairValueCommodityMember_b45c65ca-ca1e-40d4-8264-856ac0c5f1d4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersRegulatoryAssetsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersRegulatoryAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersRegulatoryAssetsDetails" xlink:type="extended" id="id42edcc794874f2298d911464e279635_RegulatoryMattersRegulatoryAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetLineItems_6f0f8c69-3ebe-4fab-8889-a76f59107fa7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsNoncurrent_400a6974-fe3a-43fc-b6bd-43214431e4ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_6f0f8c69-3ebe-4fab-8889-a76f59107fa7" xlink:to="loc_us-gaap_RegulatoryAssetsNoncurrent_400a6974-fe3a-43fc-b6bd-43214431e4ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetsCurrent_30d47b8e-1e68-4d0b-9ed1-eb447beb1dd2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_6f0f8c69-3ebe-4fab-8889-a76f59107fa7" xlink:to="loc_us-gaap_RegulatoryAssetsCurrent_30d47b8e-1e68-4d0b-9ed1-eb447beb1dd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssets_37260190-62a0-4e48-99f9-2caf1dfc283d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_6f0f8c69-3ebe-4fab-8889-a76f59107fa7" xlink:to="loc_us-gaap_RegulatoryAssets_37260190-62a0-4e48-99f9-2caf1dfc283d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_20c16161-cc99-4eaf-8cb0-852750ce4f03" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRegulatoryAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_6f0f8c69-3ebe-4fab-8889-a76f59107fa7" xlink:to="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_20c16161-cc99-4eaf-8cb0-852750ce4f03" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9763e79c-a60a-42f2-a592-e930c3c165eb" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_20c16161-cc99-4eaf-8cb0-852750ce4f03" xlink:to="loc_dei_LegalEntityAxis_9763e79c-a60a-42f2-a592-e930c3c165eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9763e79c-a60a-42f2-a592-e930c3c165eb_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9763e79c-a60a-42f2-a592-e930c3c165eb" xlink:to="loc_dei_EntityDomain_9763e79c-a60a-42f2-a592-e930c3c165eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d3f1d13-657e-4b33-a184-f650b6e85068" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9763e79c-a60a-42f2-a592-e930c3c165eb" xlink:to="loc_dei_EntityDomain_8d3f1d13-657e-4b33-a184-f650b6e85068" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ef300562-468d-49e8-8b87-383ceb0975cb" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8d3f1d13-657e-4b33-a184-f650b6e85068" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ef300562-468d-49e8-8b87-383ceb0975cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_b170a1e9-27a8-4876-b698-08fcabf6a548" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_20c16161-cc99-4eaf-8cb0-852750ce4f03" xlink:to="loc_us-gaap_RegulatoryAssetAxis_b170a1e9-27a8-4876-b698-08fcabf6a548" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_b170a1e9-27a8-4876-b698-08fcabf6a548_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_b170a1e9-27a8-4876-b698-08fcabf6a548" xlink:to="loc_us-gaap_RegulatoryAssetDomain_b170a1e9-27a8-4876-b698-08fcabf6a548_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_b170a1e9-27a8-4876-b698-08fcabf6a548" xlink:to="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRestorationCostsMember_8c161348-1202-4659-9303-57761f950d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRestorationCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_us-gaap_EnvironmentalRestorationCostsMember_8c161348-1202-4659-9303-57761f950d0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SystemPeakReductionAndEnergyEfficiencyProgramsMember_66dbf3c8-e735-4722-b746-0e0fcf23cfc1" xlink:href="ed-20221231.xsd#ed_SystemPeakReductionAndEnergyEfficiencyProgramsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_SystemPeakReductionAndEnergyEfficiencyProgramsMember_66dbf3c8-e735-4722-b746-0e0fcf23cfc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueTaxesMember_4f25bb64-9c71-4d9a-ba0a-867f4011e22e" xlink:href="ed-20221231.xsd#ed_RevenueTaxesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_RevenueTaxesMember_4f25bb64-9c71-4d9a-ba0a-867f4011e22e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PensionAndOtherPostRetirementBenefitsDeferralsMember_55f91f93-186b-472d-9efa-9569fc901495" xlink:href="ed-20221231.xsd#ed_PensionAndOtherPostRetirementBenefitsDeferralsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_PensionAndOtherPostRetirementBenefitsDeferralsMember_55f91f93-186b-472d-9efa-9569fc901495" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_COVID19PandemicDeferralsMember_f72917a4-d092-4dbd-9664-d6ea09fa401c" xlink:href="ed-20221231.xsd#ed_COVID19PandemicDeferralsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_COVID19PandemicDeferralsMember_f72917a4-d092-4dbd-9664-d6ea09fa401c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredStormCostsMember_bcd79350-bf25-42d8-b485-356868228b1b" xlink:href="ed-20221231.xsd#ed_DeferredStormCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_DeferredStormCostsMember_bcd79350-bf25-42d8-b485-356868228b1b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxReconciliationMember_f92dfa81-1ace-42cb-aaef-6aedd8a16be4" xlink:href="ed-20221231.xsd#ed_PropertyTaxReconciliationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_PropertyTaxReconciliationMember_f92dfa81-1ace-42cb-aaef-6aedd8a16be4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasServiceLineDeferredCostsMember_309d645a-3a0d-4755-b39f-9484b903baf6" xlink:href="ed-20221231.xsd#ed_GasServiceLineDeferredCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_GasServiceLineDeferredCostsMember_309d645a-3a0d-4755-b39f-9484b903baf6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ArrearsReliefProgramDeferralMember_307a100a-48df-4dce-8e56-81ed5d0fea2a" xlink:href="ed-20221231.xsd#ed_ArrearsReliefProgramDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_ArrearsReliefProgramDeferralMember_307a100a-48df-4dce-8e56-81ed5d0fea2a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MTAPowerReliabilityDeferralMember_28c8a79d-9b2a-4774-97f3-bf24af2c089b" xlink:href="ed-20221231.xsd#ed_MTAPowerReliabilityDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_MTAPowerReliabilityDeferralMember_28c8a79d-9b2a-4774-97f3-bf24af2c089b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnrecognizedPensionAndOtherPostretirementCostsMember_20cf2a0c-1af7-4796-84e3-13ed0e43cb75" xlink:href="ed-20221231.xsd#ed_UnrecognizedPensionAndOtherPostretirementCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_UnrecognizedPensionAndOtherPostretirementCostsMember_20cf2a0c-1af7-4796-84e3-13ed0e43cb75" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BrooklynQueensDemandManagementProgramMember_e5cda1d4-3942-46a5-b815-ae3cf3b6de7a" xlink:href="ed-20221231.xsd#ed_BrooklynQueensDemandManagementProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_BrooklynQueensDemandManagementProgramMember_e5cda1d4-3942-46a5-b815-ae3cf3b6de7a" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeLossesLongTermMember_73d657c0-070e-4199-b9f9-6e7b9e00baae" xlink:href="ed-20221231.xsd#ed_DerivativeLossesLongTermMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_DerivativeLossesLongTermMember_73d657c0-070e-4199-b9f9-6e7b9e00baae" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricVehicleMakeReadyMember_00e36179-8d6b-4388-b1a6-7e5c4d6ce7ad" xlink:href="ed-20221231.xsd#ed_ElectricVehicleMakeReadyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_ElectricVehicleMakeReadyMember_00e36179-8d6b-4388-b1a6-7e5c4d6ce7ad" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MunicipalInfrastructureSupportCostMember_c01a97f8-5560-407c-bf5c-304a25888bda" xlink:href="ed-20221231.xsd#ed_MunicipalInfrastructureSupportCostMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_MunicipalInfrastructureSupportCostMember_c01a97f8-5560-407c-bf5c-304a25888bda" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MeadowlandsHeaterOdorizationProjectMember_d6e64238-1f92-4096-b269-23932c729744" xlink:href="ed-20221231.xsd#ed_MeadowlandsHeaterOdorizationProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_MeadowlandsHeaterOdorizationProjectMember_d6e64238-1f92-4096-b269-23932c729744" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonWireAlternativeProjectsMember_0027290f-619b-4bd5-8f51-c0f01c33e3d0" xlink:href="ed-20221231.xsd#ed_NonWireAlternativeProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_NonWireAlternativeProjectsMember_0027290f-619b-4bd5-8f51-c0f01c33e3d0" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LegacyMetersMember_c6cb0809-0627-421e-8c96-95c4b5b5326a" xlink:href="ed-20221231.xsd#ed_LegacyMetersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_LegacyMetersMember_c6cb0809-0627-421e-8c96-95c4b5b5326a" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PreferredStockRedemptionMember_86c3d91d-3731-4d31-9445-6299e4abcde6" xlink:href="ed-20221231.xsd#ed_PreferredStockRedemptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_PreferredStockRedemptionMember_86c3d91d-3731-4d31-9445-6299e4abcde6" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnamortizedLossOnReacquiredDebtMember_b061af7b-f2fb-40eb-94ff-98c928c4c385" xlink:href="ed-20221231.xsd#ed_UnamortizedLossOnReacquiredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_UnamortizedLossOnReacquiredDebtMember_b061af7b-f2fb-40eb-94ff-98c928c4c385" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RecoverableREVDemonstrationProjectExpensesMember_1c5c85e9-b097-4f05-ac93-da9a3928f146" xlink:href="ed-20221231.xsd#ed_RecoverableREVDemonstrationProjectExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_RecoverableREVDemonstrationProjectExpensesMember_1c5c85e9-b097-4f05-ac93-da9a3928f146" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GateStationUpgradeProjectMember_67860f9d-bbb9-485e-a01d-1ff34bfa24d0" xlink:href="ed-20221231.xsd#ed_GateStationUpgradeProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_GateStationUpgradeProjectMember_67860f9d-bbb9-485e-a01d-1ff34bfa24d0" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherRegulatoryAssetsMember_e14c52a0-7d7b-4214-a9fe-66e49ab35818" xlink:href="ed-20221231.xsd#ed_OtherRegulatoryAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_OtherRegulatoryAssetsMember_e14c52a0-7d7b-4214-a9fe-66e49ab35818" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeLossesCurrentMember_d32fd3ff-a986-4fdf-9d2e-9b6ed0523ed3" xlink:href="ed-20221231.xsd#ed_DerivativeLossesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_DerivativeLossesCurrentMember_d32fd3ff-a986-4fdf-9d2e-9b6ed0523ed3" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RecoverableEnergyCostsMember_3667d90d-ee77-4d04-b74b-863df3edb5f9" xlink:href="ed-20221231.xsd#ed_RecoverableEnergyCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_87919fdd-374a-4f31-8574-908f2280fb6d" xlink:to="loc_ed_RecoverableEnergyCostsMember_3667d90d-ee77-4d04-b74b-863df3edb5f9" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_75bf0801-146e-46c4-8c9d-4f2f3b30aabd" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_20c16161-cc99-4eaf-8cb0-852750ce4f03" xlink:to="loc_srt_ConsolidatedEntitiesAxis_75bf0801-146e-46c4-8c9d-4f2f3b30aabd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_75bf0801-146e-46c4-8c9d-4f2f3b30aabd_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_75bf0801-146e-46c4-8c9d-4f2f3b30aabd" xlink:to="loc_srt_ConsolidatedEntitiesDomain_75bf0801-146e-46c4-8c9d-4f2f3b30aabd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_696150d6-ef6f-4029-975f-50f254a148f2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_75bf0801-146e-46c4-8c9d-4f2f3b30aabd" xlink:to="loc_srt_ConsolidatedEntitiesDomain_696150d6-ef6f-4029-975f-50f254a148f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_b4779bf0-5ee9-45d7-bf69-6fbdd162d99e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_696150d6-ef6f-4029-975f-50f254a148f2" xlink:to="loc_srt_SubsidiariesMember_b4779bf0-5ee9-45d7-bf69-6fbdd162d99e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersRegulatoryLiabilitiesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersRegulatoryLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersRegulatoryLiabilitiesDetails" xlink:type="extended" id="i9bf40820caba4f7886f39713af358612_RegulatoryMattersRegulatoryLiabilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilitiesLineItems_33301391-abb5-4534-900a-9f7a0ecace4d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_3bbbc484-2fd6-4930-a5fb-06365423189e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_33301391-abb5-4534-900a-9f7a0ecace4d" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_3bbbc484-2fd6-4930-a5fb-06365423189e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityCurrent_1660f6eb-6877-4953-a586-21a3e265e09c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_33301391-abb5-4534-900a-9f7a0ecace4d" xlink:to="loc_us-gaap_RegulatoryLiabilityCurrent_1660f6eb-6877-4953-a586-21a3e265e09c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilities_0889ec6e-3e23-47ec-aeca-c0026393d25d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_33301391-abb5-4534-900a-9f7a0ecace4d" xlink:to="loc_us-gaap_RegulatoryLiabilities_0889ec6e-3e23-47ec-aeca-c0026393d25d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_c39d3624-f847-4d68-b185-be8ec11a79fa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRegulatoryLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_33301391-abb5-4534-900a-9f7a0ecace4d" xlink:to="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_c39d3624-f847-4d68-b185-be8ec11a79fa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_c1d54fba-76ba-4788-a937-68ea28aad216" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_c39d3624-f847-4d68-b185-be8ec11a79fa" xlink:to="loc_dei_LegalEntityAxis_c1d54fba-76ba-4788-a937-68ea28aad216" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c1d54fba-76ba-4788-a937-68ea28aad216_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_c1d54fba-76ba-4788-a937-68ea28aad216" xlink:to="loc_dei_EntityDomain_c1d54fba-76ba-4788-a937-68ea28aad216_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_328a3bbd-0521-44a7-8c15-d6c4a19b3430" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_c1d54fba-76ba-4788-a937-68ea28aad216" xlink:to="loc_dei_EntityDomain_328a3bbd-0521-44a7-8c15-d6c4a19b3430" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cfe54e8c-cf31-4a5d-bc17-9a6667388673" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_328a3bbd-0521-44a7-8c15-d6c4a19b3430" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cfe54e8c-cf31-4a5d-bc17-9a6667388673" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_42b52aac-5763-4f05-9223-5ccdd0644868" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_c39d3624-f847-4d68-b185-be8ec11a79fa" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_42b52aac-5763-4f05-9223-5ccdd0644868" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_42b52aac-5763-4f05-9223-5ccdd0644868_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_42b52aac-5763-4f05-9223-5ccdd0644868" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_42b52aac-5763-4f05-9223-5ccdd0644868_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_42b52aac-5763-4f05-9223-5ccdd0644868" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxChargesMember_ed6a3f55-33dc-41f1-aff3-c313e5e39fec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxChargesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_us-gaap_DeferredIncomeTaxChargesMember_ed6a3f55-33dc-41f1-aff3-c313e5e39fec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnrecognizedOtherPostretirementBenefitsCostsMember_da1f59a8-8d8b-4c81-8421-41218f916530" xlink:href="ed-20221231.xsd#ed_UnrecognizedOtherPostretirementBenefitsCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_UnrecognizedOtherPostretirementBenefitsCostsMember_da1f59a8-8d8b-4c81-8421-41218f916530" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCostsMember_6cf0b518-4fa7-46de-a736-daad5ed35258" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_us-gaap_AssetRetirementObligationCostsMember_6cf0b518-4fa7-46de-a736-daad5ed35258" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_A2022LatePaymentChargeDeferralMember_31ae5c4c-88b9-4800-816c-423c62cd25e9" xlink:href="ed-20221231.xsd#ed_A2022LatePaymentChargeDeferralMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_A2022LatePaymentChargeDeferralMember_31ae5c4c-88b9-4800-816c-423c62cd25e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NetUnbilledRevenueDeferralsMember_02f34def-b029-44cf-a85a-814383289387" xlink:href="ed-20221231.xsd#ed_NetUnbilledRevenueDeferralsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_NetUnbilledRevenueDeferralsMember_02f34def-b029-44cf-a85a-814383289387" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredDerivativeGainsLongTermMember_e43c9058-fee8-44f3-b17e-b4ad546886ca" xlink:href="ed-20221231.xsd#ed_DeferredDerivativeGainsLongTermMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_DeferredDerivativeGainsLongTermMember_e43c9058-fee8-44f3-b17e-b4ad546886ca" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PensionAndOtherPostRetirementBenefitsDeferralsLiabilitiesMember_44a8e00c-850f-40c8-a18c-9862bf92caa8" xlink:href="ed-20221231.xsd#ed_PensionAndOtherPostRetirementBenefitsDeferralsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_PensionAndOtherPostRetirementBenefitsDeferralsLiabilitiesMember_44a8e00c-850f-40c8-a18c-9862bf92caa8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SystemBenefitChargeCarryingChargeMember_27132edd-d68d-4517-be2e-66119ded9cfa" xlink:href="ed-20221231.xsd#ed_SystemBenefitChargeCarryingChargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_SystemBenefitChargeCarryingChargeMember_27132edd-d68d-4517-be2e-66119ded9cfa" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NetProceedsFromSaleOfPropertyMember_a0803ee7-f188-473c-8a48-85f71b79eebe" xlink:href="ed-20221231.xsd#ed_NetProceedsFromSaleOfPropertyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_NetProceedsFromSaleOfPropertyMember_a0803ee7-f188-473c-8a48-85f71b79eebe" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SalesAndUseTaxRefundsMember_797f84a0-baac-43d9-ac0c-d35bb325a894" xlink:href="ed-20221231.xsd#ed_SalesAndUseTaxRefundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_SalesAndUseTaxRefundsMember_797f84a0-baac-43d9-ac0c-d35bb325a894" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PropertyTaxRefundMember_d09b7a61-1051-49da-a1e4-1392b226c821" xlink:href="ed-20221231.xsd#ed_PropertyTaxRefundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_PropertyTaxRefundMember_d09b7a61-1051-49da-a1e4-1392b226c821" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BQDMAndREVDemoReconciliationsMember_1f3e6752-e19e-40b9-afc2-63f84c036235" xlink:href="ed-20221231.xsd#ed_BQDMAndREVDemoReconciliationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_BQDMAndREVDemoReconciliationsMember_1f3e6752-e19e-40b9-afc2-63f84c036235" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricExcessEarningsMember_18fea0ab-5e78-4397-ad25-4efe964aaaa0" xlink:href="ed-20221231.xsd#ed_ElectricExcessEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_ElectricExcessEarningsMember_18fea0ab-5e78-4397-ad25-4efe964aaaa0" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EnergyEfficiencyPortfolioStandardUnencumberedFundsMember_a60ebe5d-b137-4aa3-9722-348b674d260b" xlink:href="ed-20221231.xsd#ed_EnergyEfficiencyPortfolioStandardUnencumberedFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_EnergyEfficiencyPortfolioStandardUnencumberedFundsMember_a60ebe5d-b137-4aa3-9722-348b674d260b" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_COVID19LiabilityDeferralsMember_04d3a692-8b85-4dee-a558-4337a7a9ad0e" xlink:href="ed-20221231.xsd#ed_COVID19LiabilityDeferralsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_COVID19LiabilityDeferralsMember_04d3a692-8b85-4dee-a558-4337a7a9ad0e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WorkersCompensationMember_3d339b08-d365-4659-bdc1-9508366009ff" xlink:href="ed-20221231.xsd#ed_WorkersCompensationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_WorkersCompensationMember_3d339b08-d365-4659-bdc1-9508366009ff" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PrudenceProceedingMember_c24a5a09-ef1c-4f2b-9d39-ce2d222065e1" xlink:href="ed-20221231.xsd#ed_PrudenceProceedingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_PrudenceProceedingMember_c24a5a09-ef1c-4f2b-9d39-ce2d222065e1" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SettlementofGasProceedingsMember_4c73bbde-4e7c-4738-a76c-f25ee4f0d150" xlink:href="ed-20221231.xsd#ed_SettlementofGasProceedingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_SettlementofGasProceedingsMember_4c73bbde-4e7c-4738-a76c-f25ee4f0d150" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherRegulatoryLiabilitiesMember_932eb413-f490-4a54-9223-1fa4bda4b679" xlink:href="ed-20221231.xsd#ed_OtherRegulatoryLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_OtherRegulatoryLiabilitiesMember_932eb413-f490-4a54-9223-1fa4bda4b679" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredDerivativeGainsCurrentMember_6dd70fe2-3643-484d-ac03-fdc1b00a5477" xlink:href="ed-20221231.xsd#ed_DeferredDerivativeGainsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_DeferredDerivativeGainsCurrentMember_6dd70fe2-3643-484d-ac03-fdc1b00a5477" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RefundableEnergyCostCurrentMember_d2736b99-a108-4b56-b0f9-3b6792a451e4" xlink:href="ed-20221231.xsd#ed_RefundableEnergyCostCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_RefundableEnergyCostCurrentMember_d2736b99-a108-4b56-b0f9-3b6792a451e4" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueDecouplingMechanismMember_ed3fbc3b-699d-4034-a092-26a35080a9ac" xlink:href="ed-20221231.xsd#ed_RevenueDecouplingMechanismMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_8abc068a-70ca-4d7b-a012-a5f84532aefe" xlink:to="loc_ed_RevenueDecouplingMechanismMember_ed3fbc3b-699d-4034-a092-26a35080a9ac" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_bb37455b-66ab-40f5-ba61-1b5dc2908421" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_c39d3624-f847-4d68-b185-be8ec11a79fa" xlink:to="loc_srt_ConsolidatedEntitiesAxis_bb37455b-66ab-40f5-ba61-1b5dc2908421" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_bb37455b-66ab-40f5-ba61-1b5dc2908421_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_bb37455b-66ab-40f5-ba61-1b5dc2908421" xlink:to="loc_srt_ConsolidatedEntitiesDomain_bb37455b-66ab-40f5-ba61-1b5dc2908421_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_4f68dd41-d639-4dba-877a-1dbbbfaf20ec" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_bb37455b-66ab-40f5-ba61-1b5dc2908421" xlink:to="loc_srt_ConsolidatedEntitiesDomain_4f68dd41-d639-4dba-877a-1dbbbfaf20ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_9b930bae-92fa-4641-bcb0-dc9da8a5ab54" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_4f68dd41-d639-4dba-877a-1dbbbfaf20ec" xlink:to="loc_srt_SubsidiariesMember_9b930bae-92fa-4641-bcb0-dc9da8a5ab54" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RegulatoryMattersScheduleofRegulatoryAssetsNotEarningaReturnDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RegulatoryMattersScheduleofRegulatoryAssetsNotEarningaReturnDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RegulatoryMattersScheduleofRegulatoryAssetsNotEarningaReturnDetails" xlink:type="extended" id="ibd6211a8225241078b08d4baa25a0c77_RegulatoryMattersScheduleofRegulatoryAssetsNotEarningaReturnDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetLineItems_79141010-75de-4cf5-a1aa-9c42d5e4b228" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryAssetsNotEarningReturn_a80c75b6-0781-4c4a-8e75-bba87964034f" xlink:href="ed-20221231.xsd#ed_RegulatoryAssetsNotEarningReturn"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_79141010-75de-4cf5-a1aa-9c42d5e4b228" xlink:to="loc_ed_RegulatoryAssetsNotEarningReturn_a80c75b6-0781-4c4a-8e75-bba87964034f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_54189fdb-e56e-4c80-a6c9-109026e9a653" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRegulatoryAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RegulatoryAssetLineItems_79141010-75de-4cf5-a1aa-9c42d5e4b228" xlink:to="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_54189fdb-e56e-4c80-a6c9-109026e9a653" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetAxis_dd422b2a-0510-4401-b079-c40f8e6dd31d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_54189fdb-e56e-4c80-a6c9-109026e9a653" xlink:to="loc_us-gaap_RegulatoryAssetAxis_dd422b2a-0510-4401-b079-c40f8e6dd31d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_dd422b2a-0510-4401-b079-c40f8e6dd31d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAssetAxis_dd422b2a-0510-4401-b079-c40f8e6dd31d" xlink:to="loc_us-gaap_RegulatoryAssetDomain_dd422b2a-0510-4401-b079-c40f8e6dd31d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAssetAxis_dd422b2a-0510-4401-b079-c40f8e6dd31d" xlink:to="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UnrecognizedPensionAndOtherPostretirementCostsMember_110e588f-27cf-462c-9a02-4fc2cc3789c1" xlink:href="ed-20221231.xsd#ed_UnrecognizedPensionAndOtherPostretirementCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_ed_UnrecognizedPensionAndOtherPostretirementCostsMember_110e588f-27cf-462c-9a02-4fc2cc3789c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRestorationCostsMember_6841fe3d-e51c-427e-ade3-53c876b61602" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRestorationCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_us-gaap_EnvironmentalRestorationCostsMember_6841fe3d-e51c-427e-ade3-53c876b61602" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueTaxesMember_dba937a5-cbf0-45bb-928e-2692db682e72" xlink:href="ed-20221231.xsd#ed_RevenueTaxesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_ed_RevenueTaxesMember_dba937a5-cbf0-45bb-928e-2692db682e72" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeLossesLongTermMember_c3b6169e-6657-4861-9a78-7764d1aa23a8" xlink:href="ed-20221231.xsd#ed_DerivativeLossesLongTermMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_ed_DerivativeLossesLongTermMember_c3b6169e-6657-4861-9a78-7764d1aa23a8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_COVID19DeferralForUncollectibleAccountsReceivableMember_6c9628b8-4dc3-4ea9-b9a0-a1b7ae17438e" xlink:href="ed-20221231.xsd#ed_COVID19DeferralForUncollectibleAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_ed_COVID19DeferralForUncollectibleAccountsReceivableMember_6c9628b8-4dc3-4ea9-b9a0-a1b7ae17438e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherRegulatoryAssetsMember_a84cb790-0518-45ba-af6e-9ad11164f5b2" xlink:href="ed-20221231.xsd#ed_OtherRegulatoryAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_ed_OtherRegulatoryAssetsMember_a84cb790-0518-45ba-af6e-9ad11164f5b2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeLossesCurrentMember_f011f8b4-efb5-4ff3-8e24-94177fc8ebe9" xlink:href="ed-20221231.xsd#ed_DerivativeLossesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAssetDomain_daf3ddbc-213c-42c2-ad7a-00364a923197" xlink:to="loc_ed_DerivativeLossesCurrentMember_f011f8b4-efb5-4ff3-8e24-94177fc8ebe9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_270c2a40-5727-405b-8985-474433d7d3a0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryAssetsTable_54189fdb-e56e-4c80-a6c9-109026e9a653" xlink:to="loc_dei_LegalEntityAxis_270c2a40-5727-405b-8985-474433d7d3a0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_270c2a40-5727-405b-8985-474433d7d3a0_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_270c2a40-5727-405b-8985-474433d7d3a0" xlink:to="loc_dei_EntityDomain_270c2a40-5727-405b-8985-474433d7d3a0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_97e22914-9bb8-49c8-ab6c-0c5f3640de7e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_270c2a40-5727-405b-8985-474433d7d3a0" xlink:to="loc_dei_EntityDomain_97e22914-9bb8-49c8-ab6c-0c5f3640de7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_e5d013a3-8029-4c36-851d-1f2f598766fb" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_97e22914-9bb8-49c8-ab6c-0c5f3640de7e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_e5d013a3-8029-4c36-851d-1f2f598766fb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CapitalizationCommonStockDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CapitalizationCommonStockDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CapitalizationCommonStockDetails" xlink:type="extended" id="i6c354b70b57f4cd185d3c14454f60eb1_CapitalizationCommonStockDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCapitalizationLineItems_3c1b0528-3440-4463-a9ff-bb5bee701ec2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCapitalizationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_fc7114fe-03f8-4192-a473-548de0f15ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLineItems_3c1b0528-3440-4463-a9ff-bb5bee701ec2" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_fc7114fe-03f8-4192-a473-548de0f15ecd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_1d88b0bd-b86a-428e-aa32-11c83ce89cdf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLineItems_3c1b0528-3440-4463-a9ff-bb5bee701ec2" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_1d88b0bd-b86a-428e-aa32-11c83ce89cdf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_586dbb4a-2613-40da-a82b-4e9eafe2fb76" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLineItems_3c1b0528-3440-4463-a9ff-bb5bee701ec2" xlink:to="loc_us-gaap_TreasuryStockCommonShares_586dbb4a-2613-40da-a82b-4e9eafe2fb76" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCapitalizationTable_e73db955-8317-495e-8067-c33c81be77aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCapitalizationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfCapitalizationLineItems_3c1b0528-3440-4463-a9ff-bb5bee701ec2" xlink:to="loc_us-gaap_ScheduleOfCapitalizationTable_e73db955-8317-495e-8067-c33c81be77aa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_39c6c21e-68e2-4011-8022-8c19b30d80b4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCapitalizationTable_e73db955-8317-495e-8067-c33c81be77aa" xlink:to="loc_dei_LegalEntityAxis_39c6c21e-68e2-4011-8022-8c19b30d80b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_39c6c21e-68e2-4011-8022-8c19b30d80b4_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_39c6c21e-68e2-4011-8022-8c19b30d80b4" xlink:to="loc_dei_EntityDomain_39c6c21e-68e2-4011-8022-8c19b30d80b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ea14635d-e2ac-42fd-bf7e-6636044d261f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_39c6c21e-68e2-4011-8022-8c19b30d80b4" xlink:to="loc_dei_EntityDomain_ea14635d-e2ac-42fd-bf7e-6636044d261f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_693f4133-57ba-4655-bb06-86ae3fa3c4a3" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ea14635d-e2ac-42fd-bf7e-6636044d261f" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_693f4133-57ba-4655-bb06-86ae3fa3c4a3" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CapitalizationScheduleofLongTermDebtMaturitiesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CapitalizationScheduleofLongTermDebtMaturitiesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CapitalizationScheduleofLongTermDebtMaturitiesDetails" xlink:type="extended" id="ia856a617e6cc42cab01c5c9a5c47be0a_CapitalizationScheduleofLongTermDebtMaturitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_c5158362-6707-4fe2-8f8c-64d7bb7964b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_c5158362-6707-4fe2-8f8c-64d7bb7964b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_c9fff63c-690f-45f7-8ba3-a37fda56fe5b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_c9fff63c-690f-45f7-8ba3-a37fda56fe5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_461a930a-a9d0-4f8b-a0b0-8437f95cac58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_461a930a-a9d0-4f8b-a0b0-8437f95cac58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_81b17c0e-ac6e-4708-9cdb-9264cbbbf793" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_81b17c0e-ac6e-4708-9cdb-9264cbbbf793" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_449130e8-0d90-4940-aa77-0dc619bda832" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_449130e8-0d90-4940-aa77-0dc619bda832" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_a3e10060-d3b6-470b-af4b-81abfd3c3ffb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_56b92ac3-6702-4439-9901-266068369586" xlink:to="loc_us-gaap_DebtInstrumentTable_a3e10060-d3b6-470b-af4b-81abfd3c3ffb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0f09f56b-23ed-4c21-b32e-f985205f2da0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_a3e10060-d3b6-470b-af4b-81abfd3c3ffb" xlink:to="loc_dei_LegalEntityAxis_0f09f56b-23ed-4c21-b32e-f985205f2da0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0f09f56b-23ed-4c21-b32e-f985205f2da0_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0f09f56b-23ed-4c21-b32e-f985205f2da0" xlink:to="loc_dei_EntityDomain_0f09f56b-23ed-4c21-b32e-f985205f2da0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f0f15569-0264-4c30-8840-4eb639b3c134" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0f09f56b-23ed-4c21-b32e-f985205f2da0" xlink:to="loc_dei_EntityDomain_f0f15569-0264-4c30-8840-4eb639b3c134" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_226e2c8b-4695-4b29-a928-5aeef6ad1a18" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f0f15569-0264-4c30-8840-4eb639b3c134" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_226e2c8b-4695-4b29-a928-5aeef6ad1a18" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CapitalizationLongtermDebtAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CapitalizationLongtermDebtAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CapitalizationLongtermDebtAdditionalInformationDetails" xlink:type="extended" id="i13f69145c53d4efc82370de3aa8bb715_CapitalizationLongtermDebtAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_e74552ef-5e26-45a5-b7c6-f03292548695" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_5ca49972-3c5b-4796-b768-946b7701a582" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e74552ef-5e26-45a5-b7c6-f03292548695" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_5ca49972-3c5b-4796-b768-946b7701a582" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_df9f2ddd-d0b4-4cd2-8363-9d103ad4deb7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_e74552ef-5e26-45a5-b7c6-f03292548695" xlink:to="loc_us-gaap_DebtInstrumentTable_df9f2ddd-d0b4-4cd2-8363-9d103ad4deb7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bb8a5b34-5dae-4aa7-8fd6-24ea3639ee30" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_df9f2ddd-d0b4-4cd2-8363-9d103ad4deb7" xlink:to="loc_dei_LegalEntityAxis_bb8a5b34-5dae-4aa7-8fd6-24ea3639ee30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bb8a5b34-5dae-4aa7-8fd6-24ea3639ee30_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bb8a5b34-5dae-4aa7-8fd6-24ea3639ee30" xlink:to="loc_dei_EntityDomain_bb8a5b34-5dae-4aa7-8fd6-24ea3639ee30_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_620f6575-b9dd-4290-8fc7-9d8061f74012" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bb8a5b34-5dae-4aa7-8fd6-24ea3639ee30" xlink:to="loc_dei_EntityDomain_620f6575-b9dd-4290-8fc7-9d8061f74012" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7baee45c-5821-4b56-a52a-3ed6b776d8f6" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_620f6575-b9dd-4290-8fc7-9d8061f74012" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7baee45c-5821-4b56-a52a-3ed6b776d8f6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_cb623718-bbf8-4108-b6e0-ddfe47c5de7e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_df9f2ddd-d0b4-4cd2-8363-9d103ad4deb7" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_cb623718-bbf8-4108-b6e0-ddfe47c5de7e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_cb623718-bbf8-4108-b6e0-ddfe47c5de7e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_cb623718-bbf8-4108-b6e0-ddfe47c5de7e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_cb623718-bbf8-4108-b6e0-ddfe47c5de7e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_815f0ce6-8236-44eb-9b2f-9d272bc23e66" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_cb623718-bbf8-4108-b6e0-ddfe47c5de7e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_815f0ce6-8236-44eb-9b2f-9d272bc23e66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtMember_84b72211-d688-48cd-81de-93638dacfede" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_815f0ce6-8236-44eb-9b2f-9d272bc23e66" xlink:to="loc_ed_TaxExemptDebtMember_84b72211-d688-48cd-81de-93638dacfede" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CapitalizationCarryingAmountsandFairValuesofLongTermDebtDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CapitalizationCarryingAmountsandFairValuesofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CapitalizationCarryingAmountsandFairValuesofLongTermDebtDetails" xlink:type="extended" id="i8d06a97a807b4c74a6f19df076029003_CapitalizationCarryingAmountsandFairValuesofLongTermDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_6bf59eef-7267-4015-80d2-8c0cd8259b6d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_7945c17a-1668-495c-8daa-54c9684173e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6bf59eef-7267-4015-80d2-8c0cd8259b6d" xlink:to="loc_us-gaap_LongTermDebtFairValue_7945c17a-1668-495c-8daa-54c9684173e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_6ec5033a-4744-4055-a090-20a3810330f2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6bf59eef-7267-4015-80d2-8c0cd8259b6d" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_6ec5033a-4744-4055-a090-20a3810330f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_460250bd-9ba3-4eca-a38e-1819fdff16a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6bf59eef-7267-4015-80d2-8c0cd8259b6d" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_460250bd-9ba3-4eca-a38e-1819fdff16a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_51c13b5f-c692-4ae3-8566-317c4d7c5b14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6bf59eef-7267-4015-80d2-8c0cd8259b6d" xlink:to="loc_us-gaap_DebtInstrumentTable_51c13b5f-c692-4ae3-8566-317c4d7c5b14" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_c6e473b3-82da-4a51-9b33-4459a5078a4f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_51c13b5f-c692-4ae3-8566-317c4d7c5b14" xlink:to="loc_dei_LegalEntityAxis_c6e473b3-82da-4a51-9b33-4459a5078a4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c6e473b3-82da-4a51-9b33-4459a5078a4f_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_c6e473b3-82da-4a51-9b33-4459a5078a4f" xlink:to="loc_dei_EntityDomain_c6e473b3-82da-4a51-9b33-4459a5078a4f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5a0ddd9d-0315-41e4-91fe-f58343316eea" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_c6e473b3-82da-4a51-9b33-4459a5078a4f" xlink:to="loc_dei_EntityDomain_5a0ddd9d-0315-41e4-91fe-f58343316eea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_89ce45b0-3f30-4e0b-97f8-1f4a75a825d1" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5a0ddd9d-0315-41e4-91fe-f58343316eea" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_89ce45b0-3f30-4e0b-97f8-1f4a75a825d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_8bbfc97f-967e-47d4-9c4b-7827d09447cd" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5a0ddd9d-0315-41e4-91fe-f58343316eea" xlink:to="loc_ed_CleanEnergyBusinessesMember_8bbfc97f-967e-47d4-9c4b-7827d09447cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_283b5e07-ee2e-465f-a814-bc736b2ce1e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_51c13b5f-c692-4ae3-8566-317c4d7c5b14" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_283b5e07-ee2e-465f-a814-bc736b2ce1e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_283b5e07-ee2e-465f-a814-bc736b2ce1e3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_283b5e07-ee2e-465f-a814-bc736b2ce1e3" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_283b5e07-ee2e-465f-a814-bc736b2ce1e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_dfe9489e-62a7-4804-87ec-94b5a61abb60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_283b5e07-ee2e-465f-a814-bc736b2ce1e3" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_dfe9489e-62a7-4804-87ec-94b5a61abb60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_f88940cd-2ab5-4e7b-a005-9d238917883a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_dfe9489e-62a7-4804-87ec-94b5a61abb60" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_f88940cd-2ab5-4e7b-a005-9d238917883a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_cd8860e9-dafd-482c-9cf1-4b0fb26a0241" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_dfe9489e-62a7-4804-87ec-94b5a61abb60" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_cd8860e9-dafd-482c-9cf1-4b0fb26a0241" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_c3f7fee5-fd7f-400b-9d1c-1cf8a88944b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_dfe9489e-62a7-4804-87ec-94b5a61abb60" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_c3f7fee5-fd7f-400b-9d1c-1cf8a88944b8" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CapitalizationSignificantDebtCovenantsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CapitalizationSignificantDebtCovenantsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CapitalizationSignificantDebtCovenantsDetails" xlink:type="extended" id="i79e370f41e4e44b3874f41769e9bdebe_CapitalizationSignificantDebtCovenantsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_b297e12e-a5d8-4926-ae5a-8be43ec5c9a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RatioOfIndebtednessToNetCapital1_3f010979-78f7-4c9f-a555-de6d0ac9ad42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RatioOfIndebtednessToNetCapital1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b297e12e-a5d8-4926-ae5a-8be43ec5c9a5" xlink:to="loc_us-gaap_RatioOfIndebtednessToNetCapital1_3f010979-78f7-4c9f-a555-de6d0ac9ad42" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CovenantPrincipalBalanceAmountLimit_ea6ce812-020a-4df7-bfac-0adf7de9b343" xlink:href="ed-20221231.xsd#ed_CovenantPrincipalBalanceAmountLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b297e12e-a5d8-4926-ae5a-8be43ec5c9a5" xlink:to="loc_ed_CovenantPrincipalBalanceAmountLimit_ea6ce812-020a-4df7-bfac-0adf7de9b343" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_570a582b-169d-4100-8e58-02edd66e030a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b297e12e-a5d8-4926-ae5a-8be43ec5c9a5" xlink:to="loc_us-gaap_DebtInstrumentTable_570a582b-169d-4100-8e58-02edd66e030a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_6e74cbfd-51d9-4d9a-a336-b922b4791392" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_570a582b-169d-4100-8e58-02edd66e030a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_6e74cbfd-51d9-4d9a-a336-b922b4791392" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6e74cbfd-51d9-4d9a-a336-b922b4791392_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_6e74cbfd-51d9-4d9a-a336-b922b4791392" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6e74cbfd-51d9-4d9a-a336-b922b4791392_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6da358f6-9bab-4f61-a7e2-0073221ee286" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_6e74cbfd-51d9-4d9a-a336-b922b4791392" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6da358f6-9bab-4f61-a7e2-0073221ee286" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxExemptDebtMember_753c1b92-2f4e-44e9-af4f-323539dd842c" xlink:href="ed-20221231.xsd#ed_TaxExemptDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6da358f6-9bab-4f61-a7e2-0073221ee286" xlink:to="loc_ed_TaxExemptDebtMember_753c1b92-2f4e-44e9-af4f-323539dd842c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TermLoanMember_30955f6e-c787-4f74-98b5-da3fb2671085" xlink:href="ed-20221231.xsd#ed_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6da358f6-9bab-4f61-a7e2-0073221ee286" xlink:to="loc_ed_TermLoanMember_30955f6e-c787-4f74-98b5-da3fb2671085" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableToBanksMember_2dedb862-0a69-4f6c-9b6a-359afe7af339" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesPayableToBanksMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6da358f6-9bab-4f61-a7e2-0073221ee286" xlink:to="loc_us-gaap_NotesPayableToBanksMember_2dedb862-0a69-4f6c-9b6a-359afe7af339" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8f63bb64-253c-4bc9-b281-7338679eeeab" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_570a582b-169d-4100-8e58-02edd66e030a" xlink:to="loc_dei_LegalEntityAxis_8f63bb64-253c-4bc9-b281-7338679eeeab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8f63bb64-253c-4bc9-b281-7338679eeeab_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8f63bb64-253c-4bc9-b281-7338679eeeab" xlink:to="loc_dei_EntityDomain_8f63bb64-253c-4bc9-b281-7338679eeeab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_724573d6-2050-4d9f-b139-c0b7f5af2220" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8f63bb64-253c-4bc9-b281-7338679eeeab" xlink:to="loc_dei_EntityDomain_724573d6-2050-4d9f-b139-c0b7f5af2220" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_b26edb60-e7fd-4e20-b440-14b2905c91ea" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_724573d6-2050-4d9f-b139-c0b7f5af2220" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_b26edb60-e7fd-4e20-b440-14b2905c91ea" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ShortTermBorrowingDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ShortTermBorrowingDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ShortTermBorrowingDetails" xlink:type="extended" id="i4528ec892c0f4da8ada73d60acb86a0d_ShortTermBorrowingDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShortTermDebtLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3350d6cc-8277-4597-8e2f-48da0c47af88" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3350d6cc-8277-4597-8e2f-48da0c47af88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_d16285a2-be1f-4a6e-86eb-22eafa28b752" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_d16285a2-be1f-4a6e-86eb-22eafa28b752" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaper_6bd5c77d-ad8e-4e31-a099-2ddbf5f61fd0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommercialPaper"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_CommercialPaper_6bd5c77d-ad8e-4e31-a099-2ddbf5f61fd0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_WeightedAverageInterestRateOfCommercialPaper_042482a3-fd33-469d-826b-1d33b7335c01" xlink:href="ed-20221231.xsd#ed_WeightedAverageInterestRateOfCommercialPaper"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_ed_WeightedAverageInterestRateOfCommercialPaper_042482a3-fd33-469d-826b-1d33b7335c01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansPayableCurrent_c1c5bf6f-9c54-4dd5-922f-55729c533ab9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LoansPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_LoansPayableCurrent_c1c5bf6f-9c54-4dd5-922f-55729c533ab9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RatioOfIndebtednessToNetCapital1_95ba9019-77ba-457f-bfbf-44845d09bb8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RatioOfIndebtednessToNetCapital1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_RatioOfIndebtednessToNetCapital1_95ba9019-77ba-457f-bfbf-44845d09bb8e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PercentageOfLiensOfCompaniesConsolidatedAsset_d514c82d-9693-4da9-83d8-bc4388f5b4cc" xlink:href="ed-20221231.xsd#ed_PercentageOfLiensOfCompaniesConsolidatedAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_ed_PercentageOfLiensOfCompaniesConsolidatedAsset_d514c82d-9693-4da9-83d8-bc4388f5b4cc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebtInstrumentCovenantComplianceMaximumAggregateLimitOfFailureToPayDebtOrDerivativeObligations_76ceb716-c387-41e2-9982-97d32296432a" xlink:href="ed-20221231.xsd#ed_DebtInstrumentCovenantComplianceMaximumAggregateLimitOfFailureToPayDebtOrDerivativeObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_ed_DebtInstrumentCovenantComplianceMaximumAggregateLimitOfFailureToPayDebtOrDerivativeObligations_76ceb716-c387-41e2-9982-97d32296432a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromShortTermDebt_1d2544dc-c7c3-4ed0-b854-6b41dddf326a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromShortTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_ProceedsFromShortTermDebt_1d2544dc-c7c3-4ed0-b854-6b41dddf326a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_014db878-c118-430b-b16c-ee34c7bd93aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_014db878-c118-430b-b16c-ee34c7bd93aa" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_e45c4571-cd3c-4a9a-8045-3451baaef457" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_DebtInstrumentTerm_e45c4571-cd3c-4a9a-8045-3451baaef457" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_f87559d5-1b55-43d6-a7b5-95a1b359bb4f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_f87559d5-1b55-43d6-a7b5-95a1b359bb4f" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DebtInstrumentCovenantComplianceConsolidatedDebtToConsolidatedTotalCapitalRatio_9a872f91-333e-4729-acef-26ec6a5bd218" xlink:href="ed-20221231.xsd#ed_DebtInstrumentCovenantComplianceConsolidatedDebtToConsolidatedTotalCapitalRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_ed_DebtInstrumentCovenantComplianceConsolidatedDebtToConsolidatedTotalCapitalRatio_9a872f91-333e-4729-acef-26ec6a5bd218" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShortTermDebtTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShortTermDebtLineItems_c40245a4-eb2e-47d4-8162-7bc5e4b6556d" xlink:to="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_46e7a23c-3bd1-49c5-9fd0-c7e5ae8316d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:to="loc_us-gaap_DebtInstrumentAxis_46e7a23c-3bd1-49c5-9fd0-c7e5ae8316d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_46e7a23c-3bd1-49c5-9fd0-c7e5ae8316d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_46e7a23c-3bd1-49c5-9fd0-c7e5ae8316d2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_46e7a23c-3bd1-49c5-9fd0-c7e5ae8316d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e0cf12ab-bcd7-47c5-881d-1bacee68f978" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_46e7a23c-3bd1-49c5-9fd0-c7e5ae8316d2" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e0cf12ab-bcd7-47c5-881d-1bacee68f978" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CreditAvailabilityThroughDecember2022Member_c769086a-1833-4f7d-b0c6-54cc6382d83c" xlink:href="ed-20221231.xsd#ed_CreditAvailabilityThroughDecember2022Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0cf12ab-bcd7-47c5-881d-1bacee68f978" xlink:to="loc_ed_CreditAvailabilityThroughDecember2022Member_c769086a-1833-4f7d-b0c6-54cc6382d83c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CreditAvailabilityThroughDecember2023Member_1f891d05-0f72-427c-b90f-a1a8657e4a53" xlink:href="ed-20221231.xsd#ed_CreditAvailabilityThroughDecember2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0cf12ab-bcd7-47c5-881d-1bacee68f978" xlink:to="loc_ed_CreditAvailabilityThroughDecember2023Member_1f891d05-0f72-427c-b90f-a1a8657e4a53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_March2022CreditAgreementVariableRate364DayRevolvingCreditAgreementMember_39c86b1b-5a8c-4a15-b468-87e45fd16c9a" xlink:href="ed-20221231.xsd#ed_March2022CreditAgreementVariableRate364DayRevolvingCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e0cf12ab-bcd7-47c5-881d-1bacee68f978" xlink:to="loc_ed_March2022CreditAgreementVariableRate364DayRevolvingCreditAgreementMember_39c86b1b-5a8c-4a15-b468-87e45fd16c9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_37cdefce-b50e-4e15-8630-d1f38da80dbd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:to="loc_dei_LegalEntityAxis_37cdefce-b50e-4e15-8630-d1f38da80dbd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_37cdefce-b50e-4e15-8630-d1f38da80dbd_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_37cdefce-b50e-4e15-8630-d1f38da80dbd" xlink:to="loc_dei_EntityDomain_37cdefce-b50e-4e15-8630-d1f38da80dbd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fae33905-d35d-46d5-920d-acfac782ba46" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_37cdefce-b50e-4e15-8630-d1f38da80dbd" xlink:to="loc_dei_EntityDomain_fae33905-d35d-46d5-920d-acfac782ba46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_45abd808-ba1f-41aa-b382-623da1672db5" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fae33905-d35d-46d5-920d-acfac782ba46" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_45abd808-ba1f-41aa-b382-623da1672db5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_c54d7744-e57e-4fb4-bae6-d11da367f230" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fae33905-d35d-46d5-920d-acfac782ba46" xlink:to="loc_ed_CleanEnergyBusinessesMember_c54d7744-e57e-4fb4-bae6-d11da367f230" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_05957b28-f089-4789-b1d8-2b9617ae60d5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:to="loc_us-gaap_CreditFacilityAxis_05957b28-f089-4789-b1d8-2b9617ae60d5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_05957b28-f089-4789-b1d8-2b9617ae60d5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_05957b28-f089-4789-b1d8-2b9617ae60d5" xlink:to="loc_us-gaap_CreditFacilityDomain_05957b28-f089-4789-b1d8-2b9617ae60d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_05abcb27-7060-4a12-9a68-8faf54a1ffec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_05957b28-f089-4789-b1d8-2b9617ae60d5" xlink:to="loc_us-gaap_CreditFacilityDomain_05abcb27-7060-4a12-9a68-8faf54a1ffec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_a4a04898-794c-4cde-b3b7-b9cce6d26d68" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_05abcb27-7060-4a12-9a68-8faf54a1ffec" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_a4a04898-794c-4cde-b3b7-b9cce6d26d68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_43bf775e-0c9d-43d3-afad-5d5688f53995" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_05abcb27-7060-4a12-9a68-8faf54a1ffec" xlink:to="loc_us-gaap_LetterOfCreditMember_43bf775e-0c9d-43d3-afad-5d5688f53995" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_ae5b6018-1895-409e-94d8-e09d0bc601c1" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:to="loc_srt_RangeAxis_ae5b6018-1895-409e-94d8-e09d0bc601c1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ae5b6018-1895-409e-94d8-e09d0bc601c1_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_ae5b6018-1895-409e-94d8-e09d0bc601c1" xlink:to="loc_srt_RangeMember_ae5b6018-1895-409e-94d8-e09d0bc601c1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_827757c3-0440-4b33-bad8-4b05fb617f3b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_ae5b6018-1895-409e-94d8-e09d0bc601c1" xlink:to="loc_srt_RangeMember_827757c3-0440-4b33-bad8-4b05fb617f3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_0d385a4a-5a97-482f-af1b-accd5a0d796c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_827757c3-0440-4b33-bad8-4b05fb617f3b" xlink:to="loc_srt_MaximumMember_0d385a4a-5a97-482f-af1b-accd5a0d796c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_3201403e-cb79-4533-95a5-df87748ad8f2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:to="loc_srt_ConsolidatedEntitiesAxis_3201403e-cb79-4533-95a5-df87748ad8f2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_3201403e-cb79-4533-95a5-df87748ad8f2_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_3201403e-cb79-4533-95a5-df87748ad8f2" xlink:to="loc_srt_ConsolidatedEntitiesDomain_3201403e-cb79-4533-95a5-df87748ad8f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_e22bd906-966e-4169-a890-74dc1bc97b32" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_3201403e-cb79-4533-95a5-df87748ad8f2" xlink:to="loc_srt_ConsolidatedEntitiesDomain_e22bd906-966e-4169-a890-74dc1bc97b32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_5e3812c0-ed9a-4924-b7bc-971347268b77" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_e22bd906-966e-4169-a890-74dc1bc97b32" xlink:to="loc_srt_SubsidiariesMember_5e3812c0-ed9a-4924-b7bc-971347268b77" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_53ae9f3a-7b33-468a-b664-943c338ee297" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_1420fe4c-9d98-4c44-bdf8-6b4617537755" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_53ae9f3a-7b33-468a-b664-943c338ee297" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_53ae9f3a-7b33-468a-b664-943c338ee297_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_53ae9f3a-7b33-468a-b664-943c338ee297" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_53ae9f3a-7b33-468a-b664-943c338ee297_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_42fcd3f4-2b4a-4637-9dff-9cd95100b54a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_53ae9f3a-7b33-468a-b664-943c338ee297" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_42fcd3f4-2b4a-4637-9dff-9cd95100b54a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_dede12fe-9943-41ee-b53e-48c986fbdfbf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_42fcd3f4-2b4a-4637-9dff-9cd95100b54a" xlink:to="loc_us-gaap_SubsequentEventMember_dede12fe-9943-41ee-b53e-48c986fbdfbf" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsTotalPeriodicBenefitCostsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsTotalPeriodicBenefitCostsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsTotalPeriodicBenefitCostsDetails" xlink:type="extended" id="i7c3dc1e4b1be4ab180638394e70db48a_PensionBenefitsTotalPeriodicBenefitCostsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_c8b16b82-c0b1-44cc-809c-e19eb07f214b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_c8b16b82-c0b1-44cc-809c-e19eb07f214b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_ca79d214-d606-4626-a37f-4376ae28f7af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_ca79d214-d606-4626-a37f-4376ae28f7af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_6de7d1ab-c73b-4435-ad81-80adb4b75ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_6de7d1ab-c73b-4435-ad81-80adb4b75ed5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_25afe6ed-b51c-4806-9838-828213092dcf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_25afe6ed-b51c-4806-9838-828213092dcf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_987b7f7e-6308-4e59-8e3f-5c070f89911a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_987b7f7e-6308-4e59-8e3f-5c070f89911a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodicBenefitCostAfterAmortizationOfRegulatoryAsset_6176c1aa-7ea0-4840-8155-11d5b1318c17" xlink:href="ed-20221231.xsd#ed_PeriodicBenefitCostAfterAmortizationOfRegulatoryAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_ed_PeriodicBenefitCostAfterAmortizationOfRegulatoryAsset_6176c1aa-7ea0-4840-8155-11d5b1318c17" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanCostCapitalized_8c3bd667-fafc-460f-80c8-6df02abe9c2a" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanCostCapitalized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_ed_DefinedBenefitPlanCostCapitalized_8c3bd667-fafc-460f-80c8-6df02abe9c2a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectOfReconciliationToRateLevel_032e9b0c-0c78-48bb-858d-38543b4e70db" xlink:href="ed-20221231.xsd#ed_EffectOfReconciliationToRateLevel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_ed_EffectOfReconciliationToRateLevel_032e9b0c-0c78-48bb-858d-38543b4e70db" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanCostCreditChargedToOperatingExpenses_5a5933c5-cb13-413b-a05b-f2dbaa46cb67" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanCostCreditChargedToOperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_ed_DefinedBenefitPlanCostCreditChargedToOperatingExpenses_5a5933c5-cb13-413b-a05b-f2dbaa46cb67" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ddce5b9a-f7b2-42ef-a843-9a2fc550e1d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4fcd98cc-4423-4ecd-97d8-8103f77f0e60" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ddce5b9a-f7b2-42ef-a843-9a2fc550e1d4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_01b3fe89-d6c8-498c-94a8-9941463f9cea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ddce5b9a-f7b2-42ef-a843-9a2fc550e1d4" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_01b3fe89-d6c8-498c-94a8-9941463f9cea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_01b3fe89-d6c8-498c-94a8-9941463f9cea_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01b3fe89-d6c8-498c-94a8-9941463f9cea" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_01b3fe89-d6c8-498c-94a8-9941463f9cea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_6b76ae13-b522-42ce-8a8a-81066fad9f56" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01b3fe89-d6c8-498c-94a8-9941463f9cea" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_6b76ae13-b522-42ce-8a8a-81066fad9f56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_925105ab-9a83-49dc-8614-e54c394bd697" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_6b76ae13-b522-42ce-8a8a-81066fad9f56" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_925105ab-9a83-49dc-8614-e54c394bd697" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a407b832-165b-43b0-938d-70e5d13ffa18" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ddce5b9a-f7b2-42ef-a843-9a2fc550e1d4" xlink:to="loc_dei_LegalEntityAxis_a407b832-165b-43b0-938d-70e5d13ffa18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a407b832-165b-43b0-938d-70e5d13ffa18_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a407b832-165b-43b0-938d-70e5d13ffa18" xlink:to="loc_dei_EntityDomain_a407b832-165b-43b0-938d-70e5d13ffa18_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_51657ec7-be99-4fd1-bdb6-4faa90c3c0b9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a407b832-165b-43b0-938d-70e5d13ffa18" xlink:to="loc_dei_EntityDomain_51657ec7-be99-4fd1-bdb6-4faa90c3c0b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_333f04f0-2e0f-4e7d-88ff-c9c491dd88de" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_51657ec7-be99-4fd1-bdb6-4faa90c3c0b9" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_333f04f0-2e0f-4e7d-88ff-c9c491dd88de" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsScheduleofFundedStatusDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsScheduleofFundedStatusDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsScheduleofFundedStatusDetails" xlink:type="extended" id="i334c5e8e34884cdd9fe662918147b892_PensionBenefitsScheduleofFundedStatusDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_7233ecf8-3b2e-4206-88e7-10feaa7fa865" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_7233ecf8-3b2e-4206-88e7-10feaa7fa865" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanServiceCostExcludingAdministrativeExpenses_2bc16759-fde4-47d5-97f0-905e208b4cbf" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanServiceCostExcludingAdministrativeExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:to="loc_ed_DefinedBenefitPlanServiceCostExcludingAdministrativeExpenses_2bc16759-fde4-47d5-97f0-905e208b4cbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_8c507e74-b252-488f-ab68-163cc52f4a96" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_8c507e74-b252-488f-ab68-163cc52f4a96" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_3e06a932-1dba-401c-8801-0bb12e8f44d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_3e06a932-1dba-401c-8801-0bb12e8f44d1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_c04bb934-c7d8-41e9-bdc8-daa653ff253e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_fe1582b1-e7bf-4e7a-9246-56b936ef987b" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_c04bb934-c7d8-41e9-bdc8-daa653ff253e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_51a7e60b-b331-48a1-9c42-39c604ce756b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_fa0dd729-5016-43a2-b38e-a69dac105bfe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_fa0dd729-5016-43a2-b38e-a69dac105bfe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_87a3e788-c4d3-4a31-84fc-cfc054fb7cee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_87a3e788-c4d3-4a31-84fc-cfc054fb7cee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_557c929b-7ba8-4460-aad8-2cfa3b8d833d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_557c929b-7ba8-4460-aad8-2cfa3b8d833d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_6b0ffa4e-5885-48dc-8855-a8901bf08bde" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_6b0ffa4e-5885-48dc-8855-a8901bf08bde" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanAdministrativeExpenses_d2ce9fa6-098a-4bed-8164-0204d54b1465" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanAdministrativeExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_e190dc9a-765b-47f5-a0d5-add9f4957762" xlink:to="loc_ed_DefinedBenefitPlanAdministrativeExpenses_d2ce9fa6-098a-4bed-8164-0204d54b1465" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_c5c56e75-cafd-45df-b86f-b515811274c7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_24d42739-32ed-4167-af60-64057670bf47" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_24d42739-32ed-4167-af60-64057670bf47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanUnrecognizedNetLoss_a360ea06-7125-4346-8cd1-9689abbdabe6" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanUnrecognizedNetLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_ed_DefinedBenefitPlanUnrecognizedNetLoss_a360ea06-7125-4346-8cd1-9689abbdabe6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanUnrecognizedPriorServiceCosts_dbcfc59e-b690-42c3-9c68-c7413cc05148" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanUnrecognizedPriorServiceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_ed_DefinedBenefitPlanUnrecognizedPriorServiceCosts_dbcfc59e-b690-42c3-9c68-c7413cc05148" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_f976aacd-b779-4215-8601-d2a28bc9a0c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_f976aacd-b779-4215-8601-d2a28bc9a0c5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_67a4b47a-88c8-4fb4-bb77-8ca3345dd4c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_dfaf5aa7-0a2c-46e5-a2ee-092731512c5d" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_67a4b47a-88c8-4fb4-bb77-8ca3345dd4c4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_04fdbaab-2ad4-46ee-b78e-49b2659c28c8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_67a4b47a-88c8-4fb4-bb77-8ca3345dd4c4" xlink:to="loc_dei_LegalEntityAxis_04fdbaab-2ad4-46ee-b78e-49b2659c28c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_04fdbaab-2ad4-46ee-b78e-49b2659c28c8_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_04fdbaab-2ad4-46ee-b78e-49b2659c28c8" xlink:to="loc_dei_EntityDomain_04fdbaab-2ad4-46ee-b78e-49b2659c28c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_06a326bf-43f0-4a47-aff1-1cca14b98359" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_04fdbaab-2ad4-46ee-b78e-49b2659c28c8" xlink:to="loc_dei_EntityDomain_06a326bf-43f0-4a47-aff1-1cca14b98359" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_27e3e8f6-ba6f-42d9-8c55-629fca942c39" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_06a326bf-43f0-4a47-aff1-1cca14b98359" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_27e3e8f6-ba6f-42d9-8c55-629fca942c39" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_83ebfcc0-9281-41be-830b-466e9cdf1d52" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_67a4b47a-88c8-4fb4-bb77-8ca3345dd4c4" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_83ebfcc0-9281-41be-830b-466e9cdf1d52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_83ebfcc0-9281-41be-830b-466e9cdf1d52_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_83ebfcc0-9281-41be-830b-466e9cdf1d52" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_83ebfcc0-9281-41be-830b-466e9cdf1d52_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_fa9af299-4f45-4998-87f3-68dd35bef541" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_83ebfcc0-9281-41be-830b-466e9cdf1d52" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_fa9af299-4f45-4998-87f3-68dd35bef541" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_79aceefb-49c4-49da-9bf9-ada4fb0ce924" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_fa9af299-4f45-4998-87f3-68dd35bef541" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_79aceefb-49c4-49da-9bf9-ada4fb0ce924" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsAdditionalInformationDetails" xlink:type="extended" id="i3281e3f539dd439d973545d5554c725e_PensionBenefitsAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_da98e063-1003-4d39-a759-d5a2a08970c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities_da98e063-1003-4d39-a759-d5a2a08970c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_09bbc335-35e3-474e-b73a-749910f3be52" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_09bbc335-35e3-474e-b73a-749910f3be52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax_d4e0ee24-eb83-4c9c-9414-95b2bcd5b7f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax_d4e0ee24-eb83-4c9c-9414-95b2bcd5b7f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_98e39f54-36f2-4fa4-a726-774a4a66a6a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_98e39f54-36f2-4fa4-a726-774a4a66a6a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_e4e71db1-201a-4842-9a17-7355fa61d443" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_e4e71db1-201a-4842-9a17-7355fa61d443" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_db9b670a-706a-4856-a4ce-14f5ee74a45a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_db9b670a-706a-4856-a4ce-14f5ee74a45a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_335b7f3a-692e-4e51-a5a6-2178c6014ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_335b7f3a-692e-4e51-a5a6-2178c6014ab4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3e6d5372-a707-4b0c-8b5e-837bb802bdcf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3a5b6cb9-79f8-415d-9692-aff3c7e8a8d3" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3e6d5372-a707-4b0c-8b5e-837bb802bdcf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_58412cf2-3ad7-4fc1-9aef-6d2356309a7e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3e6d5372-a707-4b0c-8b5e-837bb802bdcf" xlink:to="loc_dei_LegalEntityAxis_58412cf2-3ad7-4fc1-9aef-6d2356309a7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_58412cf2-3ad7-4fc1-9aef-6d2356309a7e_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_58412cf2-3ad7-4fc1-9aef-6d2356309a7e" xlink:to="loc_dei_EntityDomain_58412cf2-3ad7-4fc1-9aef-6d2356309a7e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7bb0ec2c-f5e5-471e-bd37-eb0faa78bef3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_58412cf2-3ad7-4fc1-9aef-6d2356309a7e" xlink:to="loc_dei_EntityDomain_7bb0ec2c-f5e5-471e-bd37-eb0faa78bef3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_1ab6f9ea-ab04-4d98-b411-2c3761754948" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7bb0ec2c-f5e5-471e-bd37-eb0faa78bef3" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_1ab6f9ea-ab04-4d98-b411-2c3761754948" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_b2df90c1-8965-4149-a873-faf10b34ed26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_3e6d5372-a707-4b0c-8b5e-837bb802bdcf" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_b2df90c1-8965-4149-a873-faf10b34ed26" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_b2df90c1-8965-4149-a873-faf10b34ed26_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_b2df90c1-8965-4149-a873-faf10b34ed26" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_b2df90c1-8965-4149-a873-faf10b34ed26_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3bd0c8d9-edb3-4d00-aed8-b92b42837f1a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_b2df90c1-8965-4149-a873-faf10b34ed26" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3bd0c8d9-edb3-4d00-aed8-b92b42837f1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_42f984e1-1d26-49af-a287-d1f91f60ab3e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3bd0c8d9-edb3-4d00-aed8-b92b42837f1a" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_42f984e1-1d26-49af-a287-d1f91f60ab3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitMember_48c63ada-450d-4265-90e1-11d2e7512c6a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3bd0c8d9-edb3-4d00-aed8-b92b42837f1a" xlink:to="loc_us-gaap_OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitMember_48c63ada-450d-4265-90e1-11d2e7512c6a" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsScheduleofAssumptionsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsScheduleofAssumptionsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsScheduleofAssumptionsDetails" xlink:type="extended" id="ia06f6be73ee046d38950a628d7e3de8a_PensionBenefitsScheduleofAssumptionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_1b276f8c-078c-46e6-8d29-ae61bed35af7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_1b276f8c-078c-46e6-8d29-ae61bed35af7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate_483e2e02-dfbd-410e-abf5-1ffd58543696" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate_483e2e02-dfbd-410e-abf5-1ffd58543696" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_31f334ea-9f67-42be-96c3-d1afb9e38358" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_31f334ea-9f67-42be-96c3-d1afb9e38358" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_5be8f47a-2d42-437c-bbc2-7defe375c2e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_5be8f47a-2d42-437c-bbc2-7defe375c2e7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate_4ec333d3-23b1-41cc-8acb-fc086ed25a14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate_4ec333d3-23b1-41cc-8acb-fc086ed25a14" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_177a5263-be93-453a-83a6-9b5e4558f32a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_177a5263-be93-453a-83a6-9b5e4558f32a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_699b3cd0-ab73-4473-9757-15ecde22182b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_699b3cd0-ab73-4473-9757-15ecde22182b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_24a266b3-42fd-412a-baa8-b652d59358b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_d1d918ee-a85a-4289-98b9-431a7fd4f6e8" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_24a266b3-42fd-412a-baa8-b652d59358b1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_5b6e7f30-feda-465b-83d4-ad43e669bb72" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_24a266b3-42fd-412a-baa8-b652d59358b1" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_5b6e7f30-feda-465b-83d4-ad43e669bb72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_5b6e7f30-feda-465b-83d4-ad43e669bb72_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_5b6e7f30-feda-465b-83d4-ad43e669bb72" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_5b6e7f30-feda-465b-83d4-ad43e669bb72_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_47d360f3-2468-4dab-8bb6-af7c3f20a63c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_5b6e7f30-feda-465b-83d4-ad43e669bb72" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_47d360f3-2468-4dab-8bb6-af7c3f20a63c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_672f6843-de73-48de-a671-1ebd6b077328" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_47d360f3-2468-4dab-8bb6-af7c3f20a63c" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_672f6843-de73-48de-a671-1ebd6b077328" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3c8d485e-e57b-4688-b6c9-dbb5c7a4dbfa" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_24a266b3-42fd-412a-baa8-b652d59358b1" xlink:to="loc_dei_LegalEntityAxis_3c8d485e-e57b-4688-b6c9-dbb5c7a4dbfa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3c8d485e-e57b-4688-b6c9-dbb5c7a4dbfa_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3c8d485e-e57b-4688-b6c9-dbb5c7a4dbfa" xlink:to="loc_dei_EntityDomain_3c8d485e-e57b-4688-b6c9-dbb5c7a4dbfa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bcd37c04-c197-4389-99d5-8e8560c543fe" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3c8d485e-e57b-4688-b6c9-dbb5c7a4dbfa" xlink:to="loc_dei_EntityDomain_bcd37c04-c197-4389-99d5-8e8560c543fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_3923bfa7-4636-472f-b022-b8c61b227fd5" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_bcd37c04-c197-4389-99d5-8e8560c543fe" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_3923bfa7-4636-472f-b022-b8c61b227fd5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_1fac8088-00f7-49a0-9e6e-8460f654ecb3" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_bcd37c04-c197-4389-99d5-8e8560c543fe" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_1fac8088-00f7-49a0-9e6e-8460f654ecb3" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsScheduleofExpectedBenefitPaymentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsScheduleofExpectedBenefitPaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsScheduleofExpectedBenefitPaymentsDetails" xlink:type="extended" id="iba279f7ae9c245fc93e280c5dc1f7b16_PensionBenefitsScheduleofExpectedBenefitPaymentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_46073fa6-afd2-4b20-9ce8-477aa9395520" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_46073fa6-afd2-4b20-9ce8-477aa9395520" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_7f4e7a0a-4e8f-408c-89ca-84f109b9e849" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_7f4e7a0a-4e8f-408c-89ca-84f109b9e849" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_80f7e692-1e57-4cff-be84-51d8dc252b51" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_80f7e692-1e57-4cff-be84-51d8dc252b51" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_ab85d76f-3a13-48e0-b888-4d8d161c0f21" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_ab85d76f-3a13-48e0-b888-4d8d161c0f21" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_e4784fcb-62ea-41e3-963a-f91b8f07e890" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_e4784fcb-62ea-41e3-963a-f91b8f07e890" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_74cc7776-b091-4861-92da-a080e9856787" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_74cc7776-b091-4861-92da-a080e9856787" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_89148f26-8f90-4f2a-a662-e2691800f8c1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_95a6229d-971a-4da2-90b5-fa6b484a7861" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_89148f26-8f90-4f2a-a662-e2691800f8c1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ff27f5de-a68d-43ba-bfce-0b561653250f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_89148f26-8f90-4f2a-a662-e2691800f8c1" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ff27f5de-a68d-43ba-bfce-0b561653250f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ff27f5de-a68d-43ba-bfce-0b561653250f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ff27f5de-a68d-43ba-bfce-0b561653250f" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ff27f5de-a68d-43ba-bfce-0b561653250f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_11d3a779-230e-4218-8d61-1b9bc4264c86" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ff27f5de-a68d-43ba-bfce-0b561653250f" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_11d3a779-230e-4218-8d61-1b9bc4264c86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_d3be2d03-d533-405f-a2b8-f9e89c901d16" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_11d3a779-230e-4218-8d61-1b9bc4264c86" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_d3be2d03-d533-405f-a2b8-f9e89c901d16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3c524f86-f2a0-4ed3-95e9-299fed452f7a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_89148f26-8f90-4f2a-a662-e2691800f8c1" xlink:to="loc_dei_LegalEntityAxis_3c524f86-f2a0-4ed3-95e9-299fed452f7a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3c524f86-f2a0-4ed3-95e9-299fed452f7a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3c524f86-f2a0-4ed3-95e9-299fed452f7a" xlink:to="loc_dei_EntityDomain_3c524f86-f2a0-4ed3-95e9-299fed452f7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_34e5e056-fb6b-406f-b696-c1fb5ebc09f1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3c524f86-f2a0-4ed3-95e9-299fed452f7a" xlink:to="loc_dei_EntityDomain_34e5e056-fb6b-406f-b696-c1fb5ebc09f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ea76b55b-d120-4894-a064-d7b907a6c6eb" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_34e5e056-fb6b-406f-b696-c1fb5ebc09f1" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ea76b55b-d120-4894-a064-d7b907a6c6eb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsScheduleofPlanAssetsAllocationsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsScheduleofPlanAssetsAllocationsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsScheduleofPlanAssetsAllocationsDetails" xlink:type="extended" id="i300fe511e1244616951c7dc3241021c0_PensionBenefitsScheduleofPlanAssetsAllocationsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b69d23eb-a066-4edc-ba5c-cdc15c15216d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_8ed2f5b2-fe77-4e9d-bf79-42ef3c87485b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b69d23eb-a066-4edc-ba5c-cdc15c15216d" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_8ed2f5b2-fe77-4e9d-bf79-42ef3c87485b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_a932bd72-6c03-4220-8b40-ed971361920c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b69d23eb-a066-4edc-ba5c-cdc15c15216d" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_a932bd72-6c03-4220-8b40-ed971361920c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76598a53-ef2a-4118-bc18-fb2ca95a3bec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b69d23eb-a066-4edc-ba5c-cdc15c15216d" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76598a53-ef2a-4118-bc18-fb2ca95a3bec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_3e2d12f4-a3b8-485f-b5bc-42f279497eec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76598a53-ef2a-4118-bc18-fb2ca95a3bec" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_3e2d12f4-a3b8-485f-b5bc-42f279497eec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3e2d12f4-a3b8-485f-b5bc-42f279497eec_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_3e2d12f4-a3b8-485f-b5bc-42f279497eec" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3e2d12f4-a3b8-485f-b5bc-42f279497eec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_a5fba4e2-f303-4c8a-b509-8522240225db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_3e2d12f4-a3b8-485f-b5bc-42f279497eec" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_a5fba4e2-f303-4c8a-b509-8522240225db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_2cd2e70b-4164-475d-b3b3-4e1549a89118" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_a5fba4e2-f303-4c8a-b509-8522240225db" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_2cd2e70b-4164-475d-b3b3-4e1549a89118" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_48040f31-eda9-4779-8f2c-31ac5fb9ac80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76598a53-ef2a-4118-bc18-fb2ca95a3bec" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_48040f31-eda9-4779-8f2c-31ac5fb9ac80" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_48040f31-eda9-4779-8f2c-31ac5fb9ac80_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_48040f31-eda9-4779-8f2c-31ac5fb9ac80" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_48040f31-eda9-4779-8f2c-31ac5fb9ac80_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_29ce7f43-048e-41de-847c-228401732c19" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_48040f31-eda9-4779-8f2c-31ac5fb9ac80" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_29ce7f43-048e-41de-847c-228401732c19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_6ead84b4-b10f-4087-bdab-bce1a1e66070" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_29ce7f43-048e-41de-847c-228401732c19" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_6ead84b4-b10f-4087-bdab-bce1a1e66070" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_0372bb37-ab0b-43f5-9be2-189ae2007557" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_29ce7f43-048e-41de-847c-228401732c19" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_0372bb37-ab0b-43f5-9be2-189ae2007557" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanRealEstateAndOtherAlternativesMember_358873df-0276-4c79-b89d-ab5750d1a2ec" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanRealEstateAndOtherAlternativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_29ce7f43-048e-41de-847c-228401732c19" xlink:to="loc_ed_DefinedBenefitPlanRealEstateAndOtherAlternativesMember_358873df-0276-4c79-b89d-ab5750d1a2ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_169dcb4d-2af8-483b-bf02-ea4d06673009" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76598a53-ef2a-4118-bc18-fb2ca95a3bec" xlink:to="loc_srt_RangeAxis_169dcb4d-2af8-483b-bf02-ea4d06673009" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_169dcb4d-2af8-483b-bf02-ea4d06673009_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_169dcb4d-2af8-483b-bf02-ea4d06673009" xlink:to="loc_srt_RangeMember_169dcb4d-2af8-483b-bf02-ea4d06673009_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7db8bb38-3b09-4bb6-921a-d26dba8eaa66" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_169dcb4d-2af8-483b-bf02-ea4d06673009" xlink:to="loc_srt_RangeMember_7db8bb38-3b09-4bb6-921a-d26dba8eaa66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_9231d680-9b25-4163-a06b-26184b22deec" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7db8bb38-3b09-4bb6-921a-d26dba8eaa66" xlink:to="loc_srt_MinimumMember_9231d680-9b25-4163-a06b-26184b22deec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7f1c084b-430a-4a37-bdc2-de9eb28a9e67" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7db8bb38-3b09-4bb6-921a-d26dba8eaa66" xlink:to="loc_srt_MaximumMember_7f1c084b-430a-4a37-bdc2-de9eb28a9e67" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsScheduleofFairValueofPlanAssetsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsScheduleofFairValueofPlanAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsScheduleofFairValueofPlanAssetsDetails" xlink:type="extended" id="i40989b241af3480ba2862f71679a419e_PensionBenefitsScheduleofFairValueofPlanAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_8b3fb5a2-a1c8-4760-ad38-07216e294f31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_8b3fb5a2-a1c8-4760-ad38-07216e294f31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsFairValueByHierarchyAndNavExtensibleList_4c7e8cf2-7b70-4e96-93b7-6e7f28b48a42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanPlanAssetsFairValueByHierarchyAndNavExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsFairValueByHierarchyAndNavExtensibleList_4c7e8cf2-7b70-4e96-93b7-6e7f28b48a42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanFundedUnfundedStatusOfPlanRelatedToPrivateEquity_d1a3def6-6504-45df-8a99-cab52175bda4" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanFundedUnfundedStatusOfPlanRelatedToPrivateEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:to="loc_ed_DefinedBenefitPlanFundedUnfundedStatusOfPlanRelatedToPrivateEquity_d1a3def6-6504-45df-8a99-cab52175bda4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PeriodOfSaleOfPartnershipInterestsInSecondaryMarket_eda7de13-43a0-44e2-b009-2c27b119e427" xlink:href="ed-20221231.xsd#ed_PeriodOfSaleOfPartnershipInterestsInSecondaryMarket"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:to="loc_ed_PeriodOfSaleOfPartnershipInterestsInSecondaryMarket_eda7de13-43a0-44e2-b009-2c27b119e427" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FairValueInvestmentsLiquidatingInvestmentPeriodOfLiquidation_166f1bbb-19a0-4436-a2bc-dfa765c14e04" xlink:href="ed-20221231.xsd#ed_FairValueInvestmentsLiquidatingInvestmentPeriodOfLiquidation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:to="loc_ed_FairValueInvestmentsLiquidatingInvestmentPeriodOfLiquidation_166f1bbb-19a0-4436-a2bc-dfa765c14e04" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_cdf676de-c9c7-4e11-8e0d-53935bafe320" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_601121e6-d3e9-49fb-a18a-0f6062506957" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_cdf676de-c9c7-4e11-8e0d-53935bafe320" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_bc3fd3df-40b1-4ad1-8502-e46111198f3d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_cdf676de-c9c7-4e11-8e0d-53935bafe320" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_bc3fd3df-40b1-4ad1-8502-e46111198f3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_bc3fd3df-40b1-4ad1-8502-e46111198f3d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bc3fd3df-40b1-4ad1-8502-e46111198f3d" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_bc3fd3df-40b1-4ad1-8502-e46111198f3d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_6f15208a-e0f1-4d1e-816e-b0246667068d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bc3fd3df-40b1-4ad1-8502-e46111198f3d" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_6f15208a-e0f1-4d1e-816e-b0246667068d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_84349ed3-6df0-46cd-87ea-34ab966c88dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_6f15208a-e0f1-4d1e-816e-b0246667068d" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_84349ed3-6df0-46cd-87ea-34ab966c88dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e956c223-1051-4785-bf31-7d22fc0a80c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_cdf676de-c9c7-4e11-8e0d-53935bafe320" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e956c223-1051-4785-bf31-7d22fc0a80c8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e956c223-1051-4785-bf31-7d22fc0a80c8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e956c223-1051-4785-bf31-7d22fc0a80c8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e956c223-1051-4785-bf31-7d22fc0a80c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f1713778-f0ad-4a77-a1ef-5150cb0f076c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e956c223-1051-4785-bf31-7d22fc0a80c8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f1713778-f0ad-4a77-a1ef-5150cb0f076c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel12And3Member_f77beb1a-8cdf-4894-a385-099b263e71c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel12And3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f1713778-f0ad-4a77-a1ef-5150cb0f076c" xlink:to="loc_us-gaap_FairValueInputsLevel12And3Member_f77beb1a-8cdf-4894-a385-099b263e71c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_27a0bae0-1369-4353-aa89-a094d6e6291a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_f77beb1a-8cdf-4894-a385-099b263e71c0" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_27a0bae0-1369-4353-aa89-a094d6e6291a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c462cdbd-9a5e-45d5-8fe5-3faa1d7c2c36" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_f77beb1a-8cdf-4894-a385-099b263e71c0" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c462cdbd-9a5e-45d5-8fe5-3faa1d7c2c36" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_6619bdaa-2b4f-4427-89ec-ef9a4ce956ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f1713778-f0ad-4a77-a1ef-5150cb0f076c" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_6619bdaa-2b4f-4427-89ec-ef9a4ce956ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_4f9c0252-0360-40b1-bc22-b26b2a7486cb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_cdf676de-c9c7-4e11-8e0d-53935bafe320" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_4f9c0252-0360-40b1-bc22-b26b2a7486cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_4f9c0252-0360-40b1-bc22-b26b2a7486cb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_4f9c0252-0360-40b1-bc22-b26b2a7486cb" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_4f9c0252-0360-40b1-bc22-b26b2a7486cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_4f9c0252-0360-40b1-bc22-b26b2a7486cb" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember_da6d1b9d-ae5b-4f23-9018-912885307ffe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember_da6d1b9d-ae5b-4f23-9018-912885307ffe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_6e7e6308-762a-4dc5-b4df-e2f901c170bd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_6e7e6308-762a-4dc5-b4df-e2f901c170bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_759fa0f3-0194-46ba-94be-a2dac032d432" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_USTreasuryAndGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_759fa0f3-0194-46ba-94be-a2dac032d432" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_7ccc7be5-ce17-4b46-931f-92dab0154b80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_7ccc7be5-ce17-4b46-931f-92dab0154b80" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanStructuredAssetDebtMember_c7493ee0-4849-4940-9d12-0e3ce4f3c159" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanStructuredAssetDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_ed_DefinedBenefitPlanStructuredAssetDebtMember_c7493ee0-4849-4940-9d12-0e3ce4f3c159" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeFundsMember_d04beb11-e11a-4c0d-ac8b-7c3bba1093ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FixedIncomeFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_FixedIncomeFundsMember_d04beb11-e11a-4c0d-ac8b-7c3bba1093ae" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_8c166b86-d5bf-4b73-91f1-9cacf2da2054" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_8c166b86-d5bf-4b73-91f1-9cacf2da2054" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDerivativeMember_0397d13b-3f9c-4c37-b84e-208ed8b8c637" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDerivativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_77e8a2cf-3f88-415a-a740-9ff5882a0b1f" xlink:to="loc_us-gaap_DefinedBenefitPlanDerivativeMember_0397d13b-3f9c-4c37-b84e-208ed8b8c637" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanInvestmentsValuedUsingNetAssetValueMember_098d376b-d374-4535-be26-923e875f7b0b" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanInvestmentsValuedUsingNetAssetValueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_DefinedBenefitPlanInvestmentsValuedUsingNetAssetValueMember_098d376b-d374-4535-be26-923e875f7b0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivateEquityFundsMember_3d967b33-4cce-4c1c-9684-932171c5e152" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrivateEquityFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsValuedUsingNetAssetValueMember_098d376b-d374-4535-be26-923e875f7b0b" xlink:to="loc_us-gaap_PrivateEquityFundsMember_3d967b33-4cce-4c1c-9684-932171c5e152" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRealEstateMember_503d521b-fbcd-4df2-b52d-d1ecea4a64be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanRealEstateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsValuedUsingNetAssetValueMember_098d376b-d374-4535-be26-923e875f7b0b" xlink:to="loc_us-gaap_DefinedBenefitPlanRealEstateMember_503d521b-fbcd-4df2-b52d-d1ecea4a64be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgeFundsMember_11a77518-70d8-46ba-8463-e20b0a04d343" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HedgeFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsValuedUsingNetAssetValueMember_098d376b-d374-4535-be26-923e875f7b0b" xlink:to="loc_us-gaap_HedgeFundsMember_11a77518-70d8-46ba-8463-e20b0a04d343" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FundsForRetireeHealthBenefitsMember_ee524c63-821a-4bd4-9318-8cf1e465066f" xlink:href="ed-20221231.xsd#ed_FundsForRetireeHealthBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_FundsForRetireeHealthBenefitsMember_ee524c63-821a-4bd4-9318-8cf1e465066f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FundsForRetireeHealthBenefitsMeasuredAtNetAssetValueMember_d397af8b-5b58-40b6-bcfe-757542a37eac" xlink:href="ed-20221231.xsd#ed_FundsForRetireeHealthBenefitsMeasuredAtNetAssetValueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_FundsForRetireeHealthBenefitsMeasuredAtNetAssetValueMember_d397af8b-5b58-40b6-bcfe-757542a37eac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TotalFundsForRetireeHealthBenefitsMember_23243eee-cef4-47f0-9c92-95ed186d0d02" xlink:href="ed-20221231.xsd#ed_TotalFundsForRetireeHealthBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_TotalFundsForRetireeHealthBenefitsMember_23243eee-cef4-47f0-9c92-95ed186d0d02" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_InvestmentsExcludingFundsForRetireeHealthBenefitsMember_30292515-1533-4422-a40c-661c63495c1b" xlink:href="ed-20221231.xsd#ed_InvestmentsExcludingFundsForRetireeHealthBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_InvestmentsExcludingFundsForRetireeHealthBenefitsMember_30292515-1533-4422-a40c-661c63495c1b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PendingActivitiesMember_70ed11bf-2f48-4a72-8967-49ac0dcc7920" xlink:href="ed-20221231.xsd#ed_PendingActivitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_223f697a-84da-4f7b-80a3-0be32472cb81" xlink:to="loc_ed_PendingActivitiesMember_70ed11bf-2f48-4a72-8967-49ac0dcc7920" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_9a939ba9-7330-4479-9c71-e9d6ebc3693c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_cdf676de-c9c7-4e11-8e0d-53935bafe320" xlink:to="loc_srt_RangeAxis_9a939ba9-7330-4479-9c71-e9d6ebc3693c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9a939ba9-7330-4479-9c71-e9d6ebc3693c_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_9a939ba9-7330-4479-9c71-e9d6ebc3693c" xlink:to="loc_srt_RangeMember_9a939ba9-7330-4479-9c71-e9d6ebc3693c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a13a8b2c-cea0-4454-8c73-740b0881d607" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_9a939ba9-7330-4479-9c71-e9d6ebc3693c" xlink:to="loc_srt_RangeMember_a13a8b2c-cea0-4454-8c73-740b0881d607" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_a5f94928-0871-46e7-8b1d-5852a7706f73" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_a13a8b2c-cea0-4454-8c73-740b0881d607" xlink:to="loc_srt_MinimumMember_a5f94928-0871-46e7-8b1d-5852a7706f73" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_756aba3c-89a2-4fb5-966e-b3d94df97413" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_a13a8b2c-cea0-4454-8c73-740b0881d607" xlink:to="loc_srt_MaximumMember_756aba3c-89a2-4fb5-966e-b3d94df97413" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/PensionBenefitsScheduleofEmployerContributiontoDefinedSavingsPlanDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#PensionBenefitsScheduleofEmployerContributiontoDefinedSavingsPlanDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/PensionBenefitsScheduleofEmployerContributiontoDefinedSavingsPlanDetails" xlink:type="extended" id="ica196ae6c6524115b064e193609e9bb2_PensionBenefitsScheduleofEmployerContributiontoDefinedSavingsPlanDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_977bea7a-1129-446e-8771-be5deabcdf8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_0fc79a92-461b-457e-8660-6df6711b3978" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_977bea7a-1129-446e-8771-be5deabcdf8d" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_0fc79a92-461b-457e-8660-6df6711b3978" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_650ad188-2522-47ce-88a4-387eae87de4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_977bea7a-1129-446e-8771-be5deabcdf8d" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_650ad188-2522-47ce-88a4-387eae87de4a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8d5ae396-1c06-4b6e-8c12-f7e24de17883" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_650ad188-2522-47ce-88a4-387eae87de4a" xlink:to="loc_dei_LegalEntityAxis_8d5ae396-1c06-4b6e-8c12-f7e24de17883" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d5ae396-1c06-4b6e-8c12-f7e24de17883_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8d5ae396-1c06-4b6e-8c12-f7e24de17883" xlink:to="loc_dei_EntityDomain_8d5ae396-1c06-4b6e-8c12-f7e24de17883_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3de94be1-b1ad-4be0-92a3-1378522159cf" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8d5ae396-1c06-4b6e-8c12-f7e24de17883" xlink:to="loc_dei_EntityDomain_3de94be1-b1ad-4be0-92a3-1378522159cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_fa33cb40-d7da-4703-b77a-184b620f99c8" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3de94be1-b1ad-4be0-92a3-1378522159cf" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_fa33cb40-d7da-4703-b77a-184b620f99c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_760aa29e-c2f8-41c1-af89-322792c8ed5e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_650ad188-2522-47ce-88a4-387eae87de4a" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_760aa29e-c2f8-41c1-af89-322792c8ed5e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_760aa29e-c2f8-41c1-af89-322792c8ed5e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_760aa29e-c2f8-41c1-af89-322792c8ed5e" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_760aa29e-c2f8-41c1-af89-322792c8ed5e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e427f9fc-2f2c-4723-b21d-62bcd14ef53e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_760aa29e-c2f8-41c1-af89-322792c8ed5e" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e427f9fc-2f2c-4723-b21d-62bcd14ef53e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_99ab5778-d29d-40b2-848e-a381140f564d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_e427f9fc-2f2c-4723-b21d-62bcd14ef53e" xlink:to="loc_us-gaap_OtherPensionPlansDefinedBenefitMember_99ab5778-d29d-40b2-848e-a381140f564d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsNetPeriodicPostretirementBenefitCostsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsNetPeriodicPostretirementBenefitCostsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsNetPeriodicPostretirementBenefitCostsDetails" xlink:type="extended" id="i1fc92389648843bb91bf99d084a81878_OtherPostretirementBenefitsNetPeriodicPostretirementBenefitCostsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_6555e436-d195-46b8-87d3-ac7ae35538bb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_6555e436-d195-46b8-87d3-ac7ae35538bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_3840cfbb-8217-4705-8bd3-3b6ed8aea790" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_3840cfbb-8217-4705-8bd3-3b6ed8aea790" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_7b8bbe92-8d50-48a5-980d-85d279a19f41" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_7b8bbe92-8d50-48a5-980d-85d279a19f41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_d8cbf35e-323a-40de-9f3f-025dbc303e34" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_d8cbf35e-323a-40de-9f3f-025dbc303e34" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_989dde30-53a6-42c3-a0a6-3689fa3f8920" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_989dde30-53a6-42c3-a0a6-3689fa3f8920" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_c0c561bf-5919-4b35-ac36-a667cd51defe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_c0c561bf-5919-4b35-ac36-a667cd51defe" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanCostCapitalized_a4f48675-8644-4685-8fba-dcad1bc15218" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanCostCapitalized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_ed_DefinedBenefitPlanCostCapitalized_a4f48675-8644-4685-8fba-dcad1bc15218" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectOfReconciliationToRateLevel_d099f0ec-9571-4756-96e4-beea6d9c880e" xlink:href="ed-20221231.xsd#ed_EffectOfReconciliationToRateLevel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_ed_EffectOfReconciliationToRateLevel_d099f0ec-9571-4756-96e4-beea6d9c880e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanCostCreditChargedToOperatingExpenses_0dc09275-cdb4-4aaa-91de-37cd7f9f1f11" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanCostCreditChargedToOperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_ed_DefinedBenefitPlanCostCreditChargedToOperatingExpenses_0dc09275-cdb4-4aaa-91de-37cd7f9f1f11" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_231133bb-c563-41e9-af43-24d19c7d3b35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_062b72a0-d7c8-469e-883b-2c88d9e9d2db" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_231133bb-c563-41e9-af43-24d19c7d3b35" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_bf8a2595-876b-45e7-9450-8e5209d6cda0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_231133bb-c563-41e9-af43-24d19c7d3b35" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_bf8a2595-876b-45e7-9450-8e5209d6cda0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_bf8a2595-876b-45e7-9450-8e5209d6cda0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bf8a2595-876b-45e7-9450-8e5209d6cda0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_bf8a2595-876b-45e7-9450-8e5209d6cda0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_c90c9fc1-08e1-4bf7-931f-7ed8d75c564b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bf8a2595-876b-45e7-9450-8e5209d6cda0" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_c90c9fc1-08e1-4bf7-931f-7ed8d75c564b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_577701ca-76fd-4465-868a-41791b7efc22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_c90c9fc1-08e1-4bf7-931f-7ed8d75c564b" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_577701ca-76fd-4465-868a-41791b7efc22" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_84866346-d806-4fc3-9dd1-78ef816e73cd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_231133bb-c563-41e9-af43-24d19c7d3b35" xlink:to="loc_dei_LegalEntityAxis_84866346-d806-4fc3-9dd1-78ef816e73cd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_84866346-d806-4fc3-9dd1-78ef816e73cd_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_84866346-d806-4fc3-9dd1-78ef816e73cd" xlink:to="loc_dei_EntityDomain_84866346-d806-4fc3-9dd1-78ef816e73cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d7988bbf-7520-4864-af75-b041e8de703c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_84866346-d806-4fc3-9dd1-78ef816e73cd" xlink:to="loc_dei_EntityDomain_d7988bbf-7520-4864-af75-b041e8de703c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_efc7a6d0-6bb9-4e87-9204-c9c09049e670" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d7988bbf-7520-4864-af75-b041e8de703c" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_efc7a6d0-6bb9-4e87-9204-c9c09049e670" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofFundedStatusDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsScheduleofFundedStatusDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofFundedStatusDetails" xlink:type="extended" id="ibb073f915f0947ed88c65cb9793d234e_OtherPostretirementBenefitsScheduleofFundedStatusDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c8a00bf6-b219-4ff6-a7e7-fd90b7b27b3f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c8a00bf6-b219-4ff6-a7e7-fd90b7b27b3f" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_dadf5084-629d-4201-ab66-ea9669273612" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_dadf5084-629d-4201-ab66-ea9669273612" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_068da263-4e93-4fef-8359-33a610474e44" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_068da263-4e93-4fef-8359-33a610474e44" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_0844f4e8-36fa-4169-b2a6-8e258fed0194" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_0844f4e8-36fa-4169-b2a6-8e258fed0194" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_8dd7da93-0771-4476-b10b-95758bbd17dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_8dd7da93-0771-4476-b10b-95758bbd17dd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanBenefitsPaidAndAdministrativeExpenses_3b9695f0-2fbc-4fec-98fe-5dfa49b240ae" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanBenefitsPaidAndAdministrativeExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:to="loc_ed_DefinedBenefitPlanBenefitsPaidAndAdministrativeExpenses_3b9695f0-2fbc-4fec-98fe-5dfa49b240ae" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_56e44850-61e3-4285-ac8f-c0576d2ccd9d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_97351a7c-a6f1-4fcb-9ab2-c62bd2897ceb" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_56e44850-61e3-4285-ac8f-c0576d2ccd9d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_5c4531cc-ac6f-4cfb-b186-f37e90cb0bf6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c8a00bf6-b219-4ff6-a7e7-fd90b7b27b3f" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_6e89326a-5f40-4679-9cec-e837e44c135f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_6e89326a-5f40-4679-9cec-e837e44c135f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_d837619b-b20d-413d-9299-6df5d7662c31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_d837619b-b20d-413d-9299-6df5d7662c31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_ea08d6b6-71d6-4d8e-887b-91a5c9fd1b14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_ea08d6b6-71d6-4d8e-887b-91a5c9fd1b14" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanEmployerGroupWaiverPlanPayments_014f6184-2f05-4dd9-9da2-fc25105f54bb" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanEmployerGroupWaiverPlanPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_ed_DefinedBenefitPlanEmployerGroupWaiverPlanPayments_014f6184-2f05-4dd9-9da2-fc25105f54bb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_16583db8-a9a7-4d53-8dc6-683c98e552a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_16583db8-a9a7-4d53-8dc6-683c98e552a2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_ab6ffa68-8263-46d9-8e63-37e28c4980f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_ab6ffa68-8263-46d9-8e63-37e28c4980f8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_5b6d26ad-7bb3-4232-9434-f89311cdd30b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_b38596c6-7fe2-40d5-add3-aaf66a4e2492" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_669eb4c7-7303-4f9a-a1d8-49671557233f" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_b38596c6-7fe2-40d5-add3-aaf66a4e2492" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanUnrecognizedNetLoss_cce83bfe-3f48-49e3-95a5-7d2a1cf4cc02" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanUnrecognizedNetLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c8a00bf6-b219-4ff6-a7e7-fd90b7b27b3f" xlink:to="loc_ed_DefinedBenefitPlanUnrecognizedNetLoss_cce83bfe-3f48-49e3-95a5-7d2a1cf4cc02" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanUnrecognizedPriorServiceCosts_74055976-109d-41ba-a210-874f94e08469" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanUnrecognizedPriorServiceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c8a00bf6-b219-4ff6-a7e7-fd90b7b27b3f" xlink:to="loc_ed_DefinedBenefitPlanUnrecognizedPriorServiceCosts_74055976-109d-41ba-a210-874f94e08469" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_e4795839-ce95-49a3-b42f-eb0562885aa1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c8a00bf6-b219-4ff6-a7e7-fd90b7b27b3f" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_e4795839-ce95-49a3-b42f-eb0562885aa1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_89948daf-4781-4eff-abd6-5ec899a862ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_e4795839-ce95-49a3-b42f-eb0562885aa1" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_89948daf-4781-4eff-abd6-5ec899a862ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_89948daf-4781-4eff-abd6-5ec899a862ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_89948daf-4781-4eff-abd6-5ec899a862ca" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_89948daf-4781-4eff-abd6-5ec899a862ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_50af77a0-4284-4adf-9aee-a5eee0c515f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_89948daf-4781-4eff-abd6-5ec899a862ca" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_50af77a0-4284-4adf-9aee-a5eee0c515f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_b4bd24e2-38b5-4350-a10c-a2ce5d76cbe0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_50af77a0-4284-4adf-9aee-a5eee0c515f8" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_b4bd24e2-38b5-4350-a10c-a2ce5d76cbe0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_17fec464-ea82-4fd6-915b-b0cad28c90c5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_e4795839-ce95-49a3-b42f-eb0562885aa1" xlink:to="loc_dei_LegalEntityAxis_17fec464-ea82-4fd6-915b-b0cad28c90c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_17fec464-ea82-4fd6-915b-b0cad28c90c5_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_17fec464-ea82-4fd6-915b-b0cad28c90c5" xlink:to="loc_dei_EntityDomain_17fec464-ea82-4fd6-915b-b0cad28c90c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_58c66735-4323-414a-8835-7112368a2913" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_17fec464-ea82-4fd6-915b-b0cad28c90c5" xlink:to="loc_dei_EntityDomain_58c66735-4323-414a-8835-7112368a2913" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_67dd8fe0-283c-41d6-91cc-f26ef7a496ab" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_58c66735-4323-414a-8835-7112368a2913" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_67dd8fe0-283c-41d6-91cc-f26ef7a496ab" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsAdditionalInformationDetails" xlink:type="extended" id="id8f38da9ef6c485793b30ea879b404e7_OtherPostretirementBenefitsAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPostretirementObligations_39c847e0-0219-4278-8533-cbb943a1faa2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPostretirementObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_IncreaseDecreaseInPostretirementObligations_39c847e0-0219-4278-8533-cbb943a1faa2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_090a2433-89c3-4395-962b-58766aa25764" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_090a2433-89c3-4395-962b-58766aa25764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_8d9e41e4-a3a8-48f4-9ee7-84a8aeb04a0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities_8d9e41e4-a3a8-48f4-9ee7-84a8aeb04a0b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_cb59f339-0bdd-4004-8fd6-ab82f011d219" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax_cb59f339-0bdd-4004-8fd6-ab82f011d219" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_a062e732-1756-46b4-9488-128a903b6a23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax_a062e732-1756-46b4-9488-128a903b6a23" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_60c0d4af-1f54-4a76-a214-b234f5c3798b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_60c0d4af-1f54-4a76-a214-b234f5c3798b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_973a9c08-a60e-4b43-9e4a-8f5e59880250" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_973a9c08-a60e-4b43-9e4a-8f5e59880250" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_23a6389c-dd01-4ce9-953f-85e99b3a25f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e09f3e96-addd-4f4b-8aac-86b8d3c9b034" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_23a6389c-dd01-4ce9-953f-85e99b3a25f8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ef1d92fe-2558-4aec-995a-58c181ca6db2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_23a6389c-dd01-4ce9-953f-85e99b3a25f8" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ef1d92fe-2558-4aec-995a-58c181ca6db2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ef1d92fe-2558-4aec-995a-58c181ca6db2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ef1d92fe-2558-4aec-995a-58c181ca6db2" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ef1d92fe-2558-4aec-995a-58c181ca6db2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_a4ee9ea1-e397-4e28-8077-3c5f885f919a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ef1d92fe-2558-4aec-995a-58c181ca6db2" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_a4ee9ea1-e397-4e28-8077-3c5f885f919a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_c9547be8-25e8-49d4-8c07-51eeb0842ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_a4ee9ea1-e397-4e28-8077-3c5f885f919a" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_c9547be8-25e8-49d4-8c07-51eeb0842ebb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_779c4474-8fec-4fb0-bda1-a3c2ae7320e0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_23a6389c-dd01-4ce9-953f-85e99b3a25f8" xlink:to="loc_dei_LegalEntityAxis_779c4474-8fec-4fb0-bda1-a3c2ae7320e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_779c4474-8fec-4fb0-bda1-a3c2ae7320e0_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_779c4474-8fec-4fb0-bda1-a3c2ae7320e0" xlink:to="loc_dei_EntityDomain_779c4474-8fec-4fb0-bda1-a3c2ae7320e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_337a767a-b6f2-47cd-99b7-b10d19c798bc" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_779c4474-8fec-4fb0-bda1-a3c2ae7320e0" xlink:to="loc_dei_EntityDomain_337a767a-b6f2-47cd-99b7-b10d19c798bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7b008232-09a6-4f6c-995d-733a414da1bd" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_337a767a-b6f2-47cd-99b7-b10d19c798bc" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7b008232-09a6-4f6c-995d-733a414da1bd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofActuarialAssumptionsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsScheduleofActuarialAssumptionsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofActuarialAssumptionsDetails" xlink:type="extended" id="i39901044269446e5a0dff377bbfd992d_OtherPostretirementBenefitsScheduleofActuarialAssumptionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e21fa49f-fbd2-4670-9ba7-031a0b294963" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_42950d39-7045-4b86-ae45-fea2baf4c67e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e21fa49f-fbd2-4670-9ba7-031a0b294963" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_42950d39-7045-4b86-ae45-fea2baf4c67e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_cb51a94d-13d9-424d-add0-4d6c5a0401e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e21fa49f-fbd2-4670-9ba7-031a0b294963" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_cb51a94d-13d9-424d-add0-4d6c5a0401e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_69f08272-4f6e-46df-b9f1-d83c8c2c13e4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e21fa49f-fbd2-4670-9ba7-031a0b294963" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_69f08272-4f6e-46df-b9f1-d83c8c2c13e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_896efeb1-914a-4825-9a5e-f85eac645a22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e21fa49f-fbd2-4670-9ba7-031a0b294963" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_896efeb1-914a-4825-9a5e-f85eac645a22" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_4c93bbce-f720-4b97-8fed-53cfbd5903a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_896efeb1-914a-4825-9a5e-f85eac645a22" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_4c93bbce-f720-4b97-8fed-53cfbd5903a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_4c93bbce-f720-4b97-8fed-53cfbd5903a6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_4c93bbce-f720-4b97-8fed-53cfbd5903a6" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_4c93bbce-f720-4b97-8fed-53cfbd5903a6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ed1e7f56-3ad3-46a5-ba02-1d528e8244de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_4c93bbce-f720-4b97-8fed-53cfbd5903a6" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ed1e7f56-3ad3-46a5-ba02-1d528e8244de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_d074c494-3c12-4d63-8a98-dfd1bd23446f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_ed1e7f56-3ad3-46a5-ba02-1d528e8244de" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_d074c494-3c12-4d63-8a98-dfd1bd23446f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e2083d30-a9f8-44fb-906a-b628d7eb022a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_896efeb1-914a-4825-9a5e-f85eac645a22" xlink:to="loc_dei_LegalEntityAxis_e2083d30-a9f8-44fb-906a-b628d7eb022a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e2083d30-a9f8-44fb-906a-b628d7eb022a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e2083d30-a9f8-44fb-906a-b628d7eb022a" xlink:to="loc_dei_EntityDomain_e2083d30-a9f8-44fb-906a-b628d7eb022a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0db4d9c4-8c9c-4f12-a4a7-4e225ed3df93" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e2083d30-a9f8-44fb-906a-b628d7eb022a" xlink:to="loc_dei_EntityDomain_0db4d9c4-8c9c-4f12-a4a7-4e225ed3df93" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_11a3e7cc-eb7d-415a-a371-a215997d124c" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0db4d9c4-8c9c-4f12-a4a7-4e225ed3df93" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_11a3e7cc-eb7d-415a-a371-a215997d124c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_fa087d30-ecd3-4c60-bb7b-dc39c7e16f9b" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0db4d9c4-8c9c-4f12-a4a7-4e225ed3df93" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_fa087d30-ecd3-4c60-bb7b-dc39c7e16f9b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofChangeofAssumedHealthCareCostTrendRateDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsScheduleofChangeofAssumedHealthCareCostTrendRateDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofChangeofAssumedHealthCareCostTrendRateDetails" xlink:type="extended" id="ib3dd5ed663dc4220a647c11e88cc7d0c_OtherPostretirementBenefitsScheduleofChangeofAssumedHealthCareCostTrendRateDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_421af84b-a61b-4cdd-ba6b-98fd74bcd3ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_3a0f416d-262a-4315-bde7-154ab918a717" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_421af84b-a61b-4cdd-ba6b-98fd74bcd3ec" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_3a0f416d-262a-4315-bde7-154ab918a717" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_96eef797-dc73-4422-8c12-75dd6cb23b90" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_421af84b-a61b-4cdd-ba6b-98fd74bcd3ec" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_96eef797-dc73-4422-8c12-75dd6cb23b90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_82c86963-caa3-453f-8b0e-cdc0153ba9a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_421af84b-a61b-4cdd-ba6b-98fd74bcd3ec" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_82c86963-caa3-453f-8b0e-cdc0153ba9a6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_0946ed76-b440-4ea7-ac77-4ac5edb7fe89" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_82c86963-caa3-453f-8b0e-cdc0153ba9a6" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_0946ed76-b440-4ea7-ac77-4ac5edb7fe89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_0946ed76-b440-4ea7-ac77-4ac5edb7fe89_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_0946ed76-b440-4ea7-ac77-4ac5edb7fe89" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_0946ed76-b440-4ea7-ac77-4ac5edb7fe89_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_dbd6a872-eddb-497c-be9a-652259d0a941" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_0946ed76-b440-4ea7-ac77-4ac5edb7fe89" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_dbd6a872-eddb-497c-be9a-652259d0a941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_dc29c35c-082d-42e6-b7ce-92e4eedfd121" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_dbd6a872-eddb-497c-be9a-652259d0a941" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_dc29c35c-082d-42e6-b7ce-92e4eedfd121" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TrendRatesAxis_96e8d23b-af69-4f08-a9c1-2fd058a32540" xlink:href="ed-20221231.xsd#ed_TrendRatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_82c86963-caa3-453f-8b0e-cdc0153ba9a6" xlink:to="loc_ed_TrendRatesAxis_96e8d23b-af69-4f08-a9c1-2fd058a32540" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TrendRatesDomain_96e8d23b-af69-4f08-a9c1-2fd058a32540_default" xlink:href="ed-20221231.xsd#ed_TrendRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_TrendRatesAxis_96e8d23b-af69-4f08-a9c1-2fd058a32540" xlink:to="loc_ed_TrendRatesDomain_96e8d23b-af69-4f08-a9c1-2fd058a32540_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TrendRatesDomain_477c2b1d-1dd3-49ea-a8ab-66d4b0e2a265" xlink:href="ed-20221231.xsd#ed_TrendRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_TrendRatesAxis_96e8d23b-af69-4f08-a9c1-2fd058a32540" xlink:to="loc_ed_TrendRatesDomain_477c2b1d-1dd3-49ea-a8ab-66d4b0e2a265" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Pre65MedicalMember_24a3a505-f62a-4059-afc5-1e3c111ff791" xlink:href="ed-20221231.xsd#ed_Pre65MedicalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_TrendRatesDomain_477c2b1d-1dd3-49ea-a8ab-66d4b0e2a265" xlink:to="loc_ed_Pre65MedicalMember_24a3a505-f62a-4059-afc5-1e3c111ff791" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_Post65MedicalMember_28deabee-8c7d-4072-ba21-7cee474c489d" xlink:href="ed-20221231.xsd#ed_Post65MedicalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_TrendRatesDomain_477c2b1d-1dd3-49ea-a8ab-66d4b0e2a265" xlink:to="loc_ed_Post65MedicalMember_28deabee-8c7d-4072-ba21-7cee474c489d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PrescriptionMedicationsMember_fbc8942b-7078-4c27-8e9c-eef3400c4593" xlink:href="ed-20221231.xsd#ed_PrescriptionMedicationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_TrendRatesDomain_477c2b1d-1dd3-49ea-a8ab-66d4b0e2a265" xlink:to="loc_ed_PrescriptionMedicationsMember_fbc8942b-7078-4c27-8e9c-eef3400c4593" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofExpectedBenefitPaymentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsScheduleofExpectedBenefitPaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofExpectedBenefitPaymentsDetails" xlink:type="extended" id="if2821d74674b4686b26b9a84099e0f96_OtherPostretirementBenefitsScheduleofExpectedBenefitPaymentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_abbbc39b-4c0b-480c-80ae-0f30cfa82d6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_abbbc39b-4c0b-480c-80ae-0f30cfa82d6e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_98e214d9-75a2-4292-9272-cacaced3d8e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_98e214d9-75a2-4292-9272-cacaced3d8e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_5785ddde-7929-4e01-9cfc-582d08ed6b12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_5785ddde-7929-4e01-9cfc-582d08ed6b12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_b96565fc-e4c8-4842-9cec-cafe7932c1e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_b96565fc-e4c8-4842-9cec-cafe7932c1e0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_6659b3c0-ed05-4199-9690-c393bcf82910" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_6659b3c0-ed05-4199-9690-c393bcf82910" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_a4c02542-ba27-4b6b-abfd-d547b83f701d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_a4c02542-ba27-4b6b-abfd-d547b83f701d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_aef27c76-6951-4457-9c3e-a6c6c8d8b4d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_a824188a-f03b-4943-882f-22d6816d3898" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_aef27c76-6951-4457-9c3e-a6c6c8d8b4d9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8805cc81-1183-4009-8765-0c8825fc2b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_aef27c76-6951-4457-9c3e-a6c6c8d8b4d9" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_8805cc81-1183-4009-8765-0c8825fc2b6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_8805cc81-1183-4009-8765-0c8825fc2b6a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8805cc81-1183-4009-8765-0c8825fc2b6a" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_8805cc81-1183-4009-8765-0c8825fc2b6a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_322bbcc2-c531-4eb6-a25d-f97c850f322e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8805cc81-1183-4009-8765-0c8825fc2b6a" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_322bbcc2-c531-4eb6-a25d-f97c850f322e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_b8070678-d721-4248-be51-5ebc058c26a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_322bbcc2-c531-4eb6-a25d-f97c850f322e" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_b8070678-d721-4248-be51-5ebc058c26a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_59f8b1ca-a938-4e5c-b8dd-866de1f39e62" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_aef27c76-6951-4457-9c3e-a6c6c8d8b4d9" xlink:to="loc_dei_LegalEntityAxis_59f8b1ca-a938-4e5c-b8dd-866de1f39e62" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_59f8b1ca-a938-4e5c-b8dd-866de1f39e62_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_59f8b1ca-a938-4e5c-b8dd-866de1f39e62" xlink:to="loc_dei_EntityDomain_59f8b1ca-a938-4e5c-b8dd-866de1f39e62_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bc3c604b-5606-42ff-b4e9-fa5c7710ee30" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_59f8b1ca-a938-4e5c-b8dd-866de1f39e62" xlink:to="loc_dei_EntityDomain_bc3c604b-5606-42ff-b4e9-fa5c7710ee30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ed3a275a-a050-4423-adca-36a7078ae0a5" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_bc3c604b-5606-42ff-b4e9-fa5c7710ee30" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ed3a275a-a050-4423-adca-36a7078ae0a5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofPlanAssetsAllocationsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsScheduleofPlanAssetsAllocationsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofPlanAssetsAllocationsDetails" xlink:type="extended" id="i1d1c148bffed405ea368d557b823f8eb_OtherPostretirementBenefitsScheduleofPlanAssetsAllocationsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fa4e6088-7fc6-47f1-8d26-ebc7785e2421" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_24a2e899-eaf1-4b81-a946-365e52488318" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fa4e6088-7fc6-47f1-8d26-ebc7785e2421" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_24a2e899-eaf1-4b81-a946-365e52488318" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_8668060a-6192-4b64-b426-a7e11bb957ee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fa4e6088-7fc6-47f1-8d26-ebc7785e2421" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_8668060a-6192-4b64-b426-a7e11bb957ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_c1962f11-f7ce-4842-a5af-c57e3e2ad588" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fa4e6088-7fc6-47f1-8d26-ebc7785e2421" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_c1962f11-f7ce-4842-a5af-c57e3e2ad588" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_c1b21a98-71b4-43a3-bf0d-40a803a28c83" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_c1962f11-f7ce-4842-a5af-c57e3e2ad588" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_c1b21a98-71b4-43a3-bf0d-40a803a28c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_c1b21a98-71b4-43a3-bf0d-40a803a28c83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c1b21a98-71b4-43a3-bf0d-40a803a28c83" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_c1b21a98-71b4-43a3-bf0d-40a803a28c83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ec1b6b5c-c67d-4171-9dfe-0ce001d86ef9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c1b21a98-71b4-43a3-bf0d-40a803a28c83" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ec1b6b5c-c67d-4171-9dfe-0ce001d86ef9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_f35f8230-cdc7-4e8a-93af-175924b0e0e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_ec1b6b5c-c67d-4171-9dfe-0ce001d86ef9" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_f35f8230-cdc7-4e8a-93af-175924b0e0e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4fc1d331-b669-4d41-83e0-169ff7583289" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_c1962f11-f7ce-4842-a5af-c57e3e2ad588" xlink:to="loc_dei_LegalEntityAxis_4fc1d331-b669-4d41-83e0-169ff7583289" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4fc1d331-b669-4d41-83e0-169ff7583289_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4fc1d331-b669-4d41-83e0-169ff7583289" xlink:to="loc_dei_EntityDomain_4fc1d331-b669-4d41-83e0-169ff7583289_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d7d82261-ba38-47c2-8fc0-98d28fb7331b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4fc1d331-b669-4d41-83e0-169ff7583289" xlink:to="loc_dei_EntityDomain_d7d82261-ba38-47c2-8fc0-98d28fb7331b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7acbbc07-7f5e-46c3-b9c5-b898c70e7fde" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d7d82261-ba38-47c2-8fc0-98d28fb7331b" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_7acbbc07-7f5e-46c3-b9c5-b898c70e7fde" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5095678f-a458-4f4d-9855-3784540ecc08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_c1962f11-f7ce-4842-a5af-c57e3e2ad588" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5095678f-a458-4f4d-9855-3784540ecc08" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_5095678f-a458-4f4d-9855-3784540ecc08_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5095678f-a458-4f4d-9855-3784540ecc08" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_5095678f-a458-4f4d-9855-3784540ecc08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_8e306272-86a4-4505-b9a9-cf94711f58f9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5095678f-a458-4f4d-9855-3784540ecc08" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_8e306272-86a4-4505-b9a9-cf94711f58f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_98788ffa-9892-4ddb-84fb-78d0bcc9c880" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8e306272-86a4-4505-b9a9-cf94711f58f9" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_98788ffa-9892-4ddb-84fb-78d0bcc9c880" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_587d4bbf-ff6c-4ac6-8796-a3471703d473" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_8e306272-86a4-4505-b9a9-cf94711f58f9" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_587d4bbf-ff6c-4ac6-8796-a3471703d473" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c9a97bc0-cda3-487c-840c-03b4ca522d02" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_c1962f11-f7ce-4842-a5af-c57e3e2ad588" xlink:to="loc_srt_RangeAxis_c9a97bc0-cda3-487c-840c-03b4ca522d02" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c9a97bc0-cda3-487c-840c-03b4ca522d02_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_c9a97bc0-cda3-487c-840c-03b4ca522d02" xlink:to="loc_srt_RangeMember_c9a97bc0-cda3-487c-840c-03b4ca522d02_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_19338956-aa78-41c6-a54d-6191d545824a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_c9a97bc0-cda3-487c-840c-03b4ca522d02" xlink:to="loc_srt_RangeMember_19338956-aa78-41c6-a54d-6191d545824a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_70ca51e6-d4d0-4b76-992d-91df0a815222" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_19338956-aa78-41c6-a54d-6191d545824a" xlink:to="loc_srt_MinimumMember_70ca51e6-d4d0-4b76-992d-91df0a815222" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5d71be22-552c-4d09-96e2-582cae5228fb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_19338956-aa78-41c6-a54d-6191d545824a" xlink:to="loc_srt_MaximumMember_5d71be22-552c-4d09-96e2-582cae5228fb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofFairValuesofPlanAssetsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#OtherPostretirementBenefitsScheduleofFairValuesofPlanAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/OtherPostretirementBenefitsScheduleofFairValuesofPlanAssetsDetails" xlink:type="extended" id="i709c5cade22241829416e545bd67de6d_OtherPostretirementBenefitsScheduleofFairValuesofPlanAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7a71d969-f97f-4e0d-bbec-909d666127f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_c8cd011d-02f1-455f-9bcd-eb01f46a01bd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7a71d969-f97f-4e0d-bbec-909d666127f1" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_c8cd011d-02f1-455f-9bcd-eb01f46a01bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_16fe363b-cbbe-48a0-8280-8375400b4dcd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7a71d969-f97f-4e0d-bbec-909d666127f1" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_16fe363b-cbbe-48a0-8280-8375400b4dcd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_2c09563e-04c0-4c3a-90d2-3a52a97cf839" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_16fe363b-cbbe-48a0-8280-8375400b4dcd" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_2c09563e-04c0-4c3a-90d2-3a52a97cf839" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_2c09563e-04c0-4c3a-90d2-3a52a97cf839_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_2c09563e-04c0-4c3a-90d2-3a52a97cf839" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_2c09563e-04c0-4c3a-90d2-3a52a97cf839_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_5349bfd4-ee85-4a04-b74c-285b5a30eabe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_2c09563e-04c0-4c3a-90d2-3a52a97cf839" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_5349bfd4-ee85-4a04-b74c-285b5a30eabe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_ef1129e3-a9a1-4bd3-993b-d460d36931ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_5349bfd4-ee85-4a04-b74c-285b5a30eabe" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_ef1129e3-a9a1-4bd3-993b-d460d36931ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_eab59d9e-a435-4c49-8063-60d1cd45f129" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_16fe363b-cbbe-48a0-8280-8375400b4dcd" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_eab59d9e-a435-4c49-8063-60d1cd45f129" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eab59d9e-a435-4c49-8063-60d1cd45f129_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_eab59d9e-a435-4c49-8063-60d1cd45f129" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eab59d9e-a435-4c49-8063-60d1cd45f129_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3fec6b2e-6181-47b2-99c9-9d3e9cb2d682" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_eab59d9e-a435-4c49-8063-60d1cd45f129" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3fec6b2e-6181-47b2-99c9-9d3e9cb2d682" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel12And3Member_2308a650-be94-479c-b684-a7739829b1e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel12And3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3fec6b2e-6181-47b2-99c9-9d3e9cb2d682" xlink:to="loc_us-gaap_FairValueInputsLevel12And3Member_2308a650-be94-479c-b684-a7739829b1e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_2fa4c082-6ac3-4eb7-9f0a-bed2ebd107e8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_2308a650-be94-479c-b684-a7739829b1e5" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_2fa4c082-6ac3-4eb7-9f0a-bed2ebd107e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_a7094849-072f-4782-8cd7-519c4d4f410b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_2308a650-be94-479c-b684-a7739829b1e5" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_a7094849-072f-4782-8cd7-519c4d4f410b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9be9e2c0-ce87-46bf-b500-866d2bff72b3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_16fe363b-cbbe-48a0-8280-8375400b4dcd" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9be9e2c0-ce87-46bf-b500-866d2bff72b3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_9be9e2c0-ce87-46bf-b500-866d2bff72b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9be9e2c0-ce87-46bf-b500-866d2bff72b3" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_9be9e2c0-ce87-46bf-b500-866d2bff72b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_9be9e2c0-ce87-46bf-b500-866d2bff72b3" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DefinedBenefitPlanInvestmentsMember_0d8547eb-9e88-478d-80dc-ed2071c35091" xlink:href="ed-20221231.xsd#ed_DefinedBenefitPlanInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:to="loc_ed_DefinedBenefitPlanInvestmentsMember_0d8547eb-9e88-478d-80dc-ed2071c35091" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_7e393623-a458-4919-b9ef-622310375ca4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_0d8547eb-9e88-478d-80dc-ed2071c35091" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_7e393623-a458-4919-b9ef-622310375ca4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeFundsMember_564bc91e-6a45-43c1-ae95-9902e96af22b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FixedIncomeFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_0d8547eb-9e88-478d-80dc-ed2071c35091" xlink:to="loc_us-gaap_FixedIncomeFundsMember_564bc91e-6a45-43c1-ae95-9902e96af22b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_dbeef0ab-0cdb-4143-ab66-f5eef34a713f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DefinedBenefitPlanInvestmentsMember_0d8547eb-9e88-478d-80dc-ed2071c35091" xlink:to="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_dbeef0ab-0cdb-4143-ab66-f5eef34a713f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FundsForRetireeHealthBenefitsMember_a6b4d784-69b7-46dc-b572-3e5b8feb05a8" xlink:href="ed-20221231.xsd#ed_FundsForRetireeHealthBenefitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:to="loc_ed_FundsForRetireeHealthBenefitsMember_a6b4d784-69b7-46dc-b572-3e5b8feb05a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_InvestmentsIncludingFundsForRetireeHealthBenefitMember_e3c87174-fac5-4a97-9cf1-b3892221744c" xlink:href="ed-20221231.xsd#ed_InvestmentsIncludingFundsForRetireeHealthBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:to="loc_ed_InvestmentsIncludingFundsForRetireeHealthBenefitMember_e3c87174-fac5-4a97-9cf1-b3892221744c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FundsForRetireeHealthBenefitsMeasuredAtNetAssetValueMember_45d0e158-ce28-4336-adc2-74904e338eca" xlink:href="ed-20221231.xsd#ed_FundsForRetireeHealthBenefitsMeasuredAtNetAssetValueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:to="loc_ed_FundsForRetireeHealthBenefitsMeasuredAtNetAssetValueMember_45d0e158-ce28-4336-adc2-74904e338eca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PendingActivitiesMember_b4e1197c-9625-499e-b057-944242ec3443" xlink:href="ed-20221231.xsd#ed_PendingActivitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_c4f585a0-bc26-4d8b-bfe3-fcbc8a5ad07e" xlink:to="loc_ed_PendingActivitiesMember_b4e1197c-9625-499e-b057-944242ec3443" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/EnvironmentalMattersAccruedLiabilitiesandRegulatoryAssetsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#EnvironmentalMattersAccruedLiabilitiesandRegulatoryAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/EnvironmentalMattersAccruedLiabilitiesandRegulatoryAssetsDetails" xlink:type="extended" id="i49a40e2fb69c4d70bb62270c68f2714e_EnvironmentalMattersAccruedLiabilitiesandRegulatoryAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyLineItems_91486b28-8de1-441d-b147-060445329191" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_5f6fe8cc-282d-47b3-bc8a-ce5559510584" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_91486b28-8de1-441d-b147-060445329191" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_5f6fe8cc-282d-47b3-bc8a-ce5559510584" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssets_3e6bc1d2-2816-4cb3-97ef-0cbacbe33cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_91486b28-8de1-441d-b147-060445329191" xlink:to="loc_us-gaap_RegulatoryAssets_3e6bc1d2-2816-4cb3-97ef-0cbacbe33cc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyTable_6efea404-8b05-46a6-960f-dd48c6bcf41c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SiteContingencyLineItems_91486b28-8de1-441d-b147-060445329191" xlink:to="loc_us-gaap_SiteContingencyTable_6efea404-8b05-46a6-960f-dd48c6bcf41c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_aa332d5d-6fd6-4f15-9e48-05a051318936" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_6efea404-8b05-46a6-960f-dd48c6bcf41c" xlink:to="loc_dei_LegalEntityAxis_aa332d5d-6fd6-4f15-9e48-05a051318936" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_aa332d5d-6fd6-4f15-9e48-05a051318936_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_aa332d5d-6fd6-4f15-9e48-05a051318936" xlink:to="loc_dei_EntityDomain_aa332d5d-6fd6-4f15-9e48-05a051318936_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_db624998-e511-44a7-9865-2f1f8957edd2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_aa332d5d-6fd6-4f15-9e48-05a051318936" xlink:to="loc_dei_EntityDomain_db624998-e511-44a7-9865-2f1f8957edd2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d426088b-aab0-4eb0-b501-2c6161046ff2" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_db624998-e511-44a7-9865-2f1f8957edd2" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d426088b-aab0-4eb0-b501-2c6161046ff2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_9d0ce526-3eac-4dfd-a28a-2eae38b72835" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationSiteAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_6efea404-8b05-46a6-960f-dd48c6bcf41c" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteAxis_9d0ce526-3eac-4dfd-a28a-2eae38b72835" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_9d0ce526-3eac-4dfd-a28a-2eae38b72835_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_9d0ce526-3eac-4dfd-a28a-2eae38b72835" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_9d0ce526-3eac-4dfd-a28a-2eae38b72835_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_886f877c-c466-4257-9735-25fcbe4a48ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_9d0ce526-3eac-4dfd-a28a-2eae38b72835" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_886f877c-c466-4257-9735-25fcbe4a48ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NaturalGasProcessingPlantMember_100c4df1-03b6-4b06-b3c1-c15e5c086e99" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NaturalGasProcessingPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_886f877c-c466-4257-9735-25fcbe4a48ac" xlink:to="loc_us-gaap_NaturalGasProcessingPlantMember_100c4df1-03b6-4b06-b3c1-c15e5c086e99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherSuperfundSitesMember_4c24fd1f-3d86-40b0-b8cf-2569e128cff8" xlink:href="ed-20221231.xsd#ed_OtherSuperfundSitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_886f877c-c466-4257-9735-25fcbe4a48ac" xlink:to="loc_ed_OtherSuperfundSitesMember_4c24fd1f-3d86-40b0-b8cf-2569e128cff8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SuperfundSitesMember_08c37471-533e-43ca-82bf-242c331fa05c" xlink:href="ed-20221231.xsd#ed_SuperfundSitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_886f877c-c466-4257-9735-25fcbe4a48ac" xlink:to="loc_ed_SuperfundSitesMember_08c37471-533e-43ca-82bf-242c331fa05c" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/EnvironmentalMattersEnvironmentalRemediationCostsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#EnvironmentalMattersEnvironmentalRemediationCostsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/EnvironmentalMattersEnvironmentalRemediationCostsDetails" xlink:type="extended" id="id1e6045e12014310a0a5039e6b120dcb_EnvironmentalMattersEnvironmentalRemediationCostsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalExitCostLineItems_569173a9-8b5f-4473-8b3b-f955fdc2b6b6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalExitCostLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationExpense_1f89bb0c-a707-49eb-a05b-bf5ba15b6703" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalExitCostLineItems_569173a9-8b5f-4473-8b3b-f955fdc2b6b6" xlink:to="loc_us-gaap_EnvironmentalRemediationExpense_1f89bb0c-a707-49eb-a05b-bf5ba15b6703" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_26ba6b08-2c28-4616-bf17-cf2d9ce39749" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalExitCostLineItems_569173a9-8b5f-4473-8b3b-f955fdc2b6b6" xlink:to="loc_us-gaap_EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_26ba6b08-2c28-4616-bf17-cf2d9ce39749" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEnvironmentalExitCostTable_f69346cd-840d-4ec5-b4ce-f6cfa2cab299" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEnvironmentalExitCostTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EnvironmentalExitCostLineItems_569173a9-8b5f-4473-8b3b-f955fdc2b6b6" xlink:to="loc_us-gaap_ScheduleOfEnvironmentalExitCostTable_f69346cd-840d-4ec5-b4ce-f6cfa2cab299" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5b254de0-d97c-46b8-99e3-4636b6e3f796" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEnvironmentalExitCostTable_f69346cd-840d-4ec5-b4ce-f6cfa2cab299" xlink:to="loc_dei_LegalEntityAxis_5b254de0-d97c-46b8-99e3-4636b6e3f796" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5b254de0-d97c-46b8-99e3-4636b6e3f796_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5b254de0-d97c-46b8-99e3-4636b6e3f796" xlink:to="loc_dei_EntityDomain_5b254de0-d97c-46b8-99e3-4636b6e3f796_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bfcca816-ff97-4cbf-892c-6bcd7d816e62" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5b254de0-d97c-46b8-99e3-4636b6e3f796" xlink:to="loc_dei_EntityDomain_bfcca816-ff97-4cbf-892c-6bcd7d816e62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_a741ba48-a8fb-4261-8ed1-bb2c603119a2" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_bfcca816-ff97-4cbf-892c-6bcd7d816e62" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_a741ba48-a8fb-4261-8ed1-bb2c603119a2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/EnvironmentalMattersAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#EnvironmentalMattersAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/EnvironmentalMattersAdditionalInformationDetails" xlink:type="extended" id="i43b2570aa33c42e49c8285272e101180_EnvironmentalMattersAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyLineItems_1a228e63-b04a-4797-9453-52a995d31b3d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_9db571b3-9c97-402f-abb3-ad713037e51f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_1a228e63-b04a-4797-9453-52a995d31b3d" xlink:to="loc_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_9db571b3-9c97-402f-abb3-ad713037e51f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PotentialUndiscountedLiabilityForEnvironmentalLossContingenciesGross_fa500bfc-80c5-4c2f-b242-c72a15ee2eac" xlink:href="ed-20221231.xsd#ed_PotentialUndiscountedLiabilityForEnvironmentalLossContingenciesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_1a228e63-b04a-4797-9453-52a995d31b3d" xlink:to="loc_ed_PotentialUndiscountedLiabilityForEnvironmentalLossContingenciesGross_fa500bfc-80c5-4c2f-b242-c72a15ee2eac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EstimatedUndiscountedAsbestosLiabilityPeriod_a878491c-462b-4da2-885b-1c39d649602c" xlink:href="ed-20221231.xsd#ed_EstimatedUndiscountedAsbestosLiabilityPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_1a228e63-b04a-4797-9453-52a995d31b3d" xlink:to="loc_ed_EstimatedUndiscountedAsbestosLiabilityPeriod_a878491c-462b-4da2-885b-1c39d649602c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SiteContingencyLineItems_1a228e63-b04a-4797-9453-52a995d31b3d" xlink:to="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_8f5437f2-587c-4e9f-ab4d-826e3b411a74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationSiteAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteAxis_8f5437f2-587c-4e9f-ab4d-826e3b411a74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_8f5437f2-587c-4e9f-ab4d-826e3b411a74_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_8f5437f2-587c-4e9f-ab4d-826e3b411a74" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_8f5437f2-587c-4e9f-ab4d-826e3b411a74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_55028c2e-38ec-4d19-8f62-d8a87e48e911" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationSiteDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_8f5437f2-587c-4e9f-ab4d-826e3b411a74" xlink:to="loc_us-gaap_EnvironmentalRemediationSiteDomain_55028c2e-38ec-4d19-8f62-d8a87e48e911" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SuperfundSitesMember_8988bff5-ccea-4566-808d-b4ac1b20c4e4" xlink:href="ed-20221231.xsd#ed_SuperfundSitesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_55028c2e-38ec-4d19-8f62-d8a87e48e911" xlink:to="loc_ed_SuperfundSitesMember_8988bff5-ccea-4566-808d-b4ac1b20c4e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_350accc6-3e0b-43a3-b579-9981751a4a40" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:to="loc_dei_LegalEntityAxis_350accc6-3e0b-43a3-b579-9981751a4a40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_350accc6-3e0b-43a3-b579-9981751a4a40_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_350accc6-3e0b-43a3-b579-9981751a4a40" xlink:to="loc_dei_EntityDomain_350accc6-3e0b-43a3-b579-9981751a4a40_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0579bbae-6422-4218-85bc-4328d89d4a3f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_350accc6-3e0b-43a3-b579-9981751a4a40" xlink:to="loc_dei_EntityDomain_0579bbae-6422-4218-85bc-4328d89d4a3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_06408927-3a8e-43fd-9826-b3238fa26c99" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0579bbae-6422-4218-85bc-4328d89d4a3f" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_06408927-3a8e-43fd-9826-b3238fa26c99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_ad2b9cee-c0a7-4da0-a4a9-c040bb59b6c4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:to="loc_us-gaap_PublicUtilityAxis_ad2b9cee-c0a7-4da0-a4a9-c040bb59b6c4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_ad2b9cee-c0a7-4da0-a4a9-c040bb59b6c4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_ad2b9cee-c0a7-4da0-a4a9-c040bb59b6c4" xlink:to="loc_us-gaap_UtilityPlantDomain_ad2b9cee-c0a7-4da0-a4a9-c040bb59b6c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_6896115a-a31a-4729-9bb6-76f8c7652aba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_ad2b9cee-c0a7-4da0-a4a9-c040bb59b6c4" xlink:to="loc_us-gaap_UtilityPlantDomain_6896115a-a31a-4729-9bb6-76f8c7652aba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NaturalGasProcessingPlantMember_de9739f1-0b35-421e-a3d4-eef1fe756bcf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NaturalGasProcessingPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_6896115a-a31a-4729-9bb6-76f8c7652aba" xlink:to="loc_us-gaap_NaturalGasProcessingPlantMember_de9739f1-0b35-421e-a3d4-eef1fe756bcf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e5525e0c-2599-40fb-b599-0e0213f826a1" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:to="loc_srt_RangeAxis_e5525e0c-2599-40fb-b599-0e0213f826a1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e5525e0c-2599-40fb-b599-0e0213f826a1_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e5525e0c-2599-40fb-b599-0e0213f826a1" xlink:to="loc_srt_RangeMember_e5525e0c-2599-40fb-b599-0e0213f826a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_76255e65-e336-4a61-8693-d89ce0a3df02" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e5525e0c-2599-40fb-b599-0e0213f826a1" xlink:to="loc_srt_RangeMember_76255e65-e336-4a61-8693-d89ce0a3df02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4d1982ba-29b3-41dc-b6b6-623caa3e3488" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_76255e65-e336-4a61-8693-d89ce0a3df02" xlink:to="loc_srt_MaximumMember_4d1982ba-29b3-41dc-b6b6-623caa3e3488" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_6e86d40f-c709-4b0f-9b29-4d4148cc6ff0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_fb94ba56-e681-4f36-b041-f997a75661e5" xlink:to="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_6e86d40f-c709-4b0f-9b29-4d4148cc6ff0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CatastrophicEventDomain_6e86d40f-c709-4b0f-9b29-4d4148cc6ff0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CatastrophicEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_6e86d40f-c709-4b0f-9b29-4d4148cc6ff0" xlink:to="loc_us-gaap_CatastrophicEventDomain_6e86d40f-c709-4b0f-9b29-4d4148cc6ff0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CatastrophicEventDomain_54452f49-1e45-4b0c-b9b3-07e62b227454" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CatastrophicEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis_6e86d40f-c709-4b0f-9b29-4d4148cc6ff0" xlink:to="loc_us-gaap_CatastrophicEventDomain_54452f49-1e45-4b0c-b9b3-07e62b227454" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AsbestosRelatedMember_8e7782d5-910b-4ec0-8f27-db79d0e6d305" xlink:href="ed-20221231.xsd#ed_AsbestosRelatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CatastrophicEventDomain_54452f49-1e45-4b0c-b9b3-07e62b227454" xlink:to="loc_ed_AsbestosRelatedMember_8e7782d5-910b-4ec0-8f27-db79d0e6d305" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/EnvironmentalMattersAccruedLiabilityforAsbestosSuitsandWorkersCompensationProceedingsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#EnvironmentalMattersAccruedLiabilityforAsbestosSuitsandWorkersCompensationProceedingsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/EnvironmentalMattersAccruedLiabilityforAsbestosSuitsandWorkersCompensationProceedingsDetails" xlink:type="extended" id="i59c91489316644159504e6af3291c3ff_EnvironmentalMattersAccruedLiabilityforAsbestosSuitsandWorkersCompensationProceedingsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyLineItems_074d7b99-aa94-4476-900e-b1bb0ceb68b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_b854afe9-a20c-4332-bc64-5f2c97b2731c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccrualForEnvironmentalLossContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_074d7b99-aa94-4476-900e-b1bb0ceb68b0" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingencies_b854afe9-a20c-4332-bc64-5f2c97b2731c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAssets_59fcb3e0-d2b9-45f9-83aa-a60931650dd9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_074d7b99-aa94-4476-900e-b1bb0ceb68b0" xlink:to="loc_us-gaap_RegulatoryAssets_59fcb3e0-d2b9-45f9-83aa-a60931650dd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilities_db7a1bd0-8e54-4dcc-8509-65da5c36a7a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_074d7b99-aa94-4476-900e-b1bb0ceb68b0" xlink:to="loc_us-gaap_RegulatoryLiabilities_db7a1bd0-8e54-4dcc-8509-65da5c36a7a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumeration_2e7b56ae-690f-4b31-9a78-9a003ea0fb31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SiteContingencyLineItems_074d7b99-aa94-4476-900e-b1bb0ceb68b0" xlink:to="loc_us-gaap_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumeration_2e7b56ae-690f-4b31-9a78-9a003ea0fb31" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SiteContingencyTable_d9219add-6489-4ba0-bf71-59d656de2e1a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SiteContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SiteContingencyLineItems_074d7b99-aa94-4476-900e-b1bb0ceb68b0" xlink:to="loc_us-gaap_SiteContingencyTable_d9219add-6489-4ba0-bf71-59d656de2e1a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_44dfcdf5-0028-496f-9056-323e6f9e33c4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_d9219add-6489-4ba0-bf71-59d656de2e1a" xlink:to="loc_dei_LegalEntityAxis_44dfcdf5-0028-496f-9056-323e6f9e33c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_44dfcdf5-0028-496f-9056-323e6f9e33c4_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_44dfcdf5-0028-496f-9056-323e6f9e33c4" xlink:to="loc_dei_EntityDomain_44dfcdf5-0028-496f-9056-323e6f9e33c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_10e15c4f-5637-4ee5-992d-c4a4b81a83d4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_44dfcdf5-0028-496f-9056-323e6f9e33c4" xlink:to="loc_dei_EntityDomain_10e15c4f-5637-4ee5-992d-c4a4b81a83d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cdf7fe28-4b9a-45aa-873c-3fc80dcb4a77" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_10e15c4f-5637-4ee5-992d-c4a4b81a83d4" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cdf7fe28-4b9a-45aa-873c-3fc80dcb4a77" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationContingencyAxis_d07af840-63b2-45c3-ac5c-def6e1cf7293" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SiteContingencyTable_d9219add-6489-4ba0-bf71-59d656de2e1a" xlink:to="loc_us-gaap_EnvironmentalRemediationContingencyAxis_d07af840-63b2-45c3-ac5c-def6e1cf7293" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationContingencyDomain_d07af840-63b2-45c3-ac5c-def6e1cf7293_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationContingencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EnvironmentalRemediationContingencyAxis_d07af840-63b2-45c3-ac5c-def6e1cf7293" xlink:to="loc_us-gaap_EnvironmentalRemediationContingencyDomain_d07af840-63b2-45c3-ac5c-def6e1cf7293_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationContingencyDomain_0e37833e-443b-4542-9c8c-aea686607b0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnvironmentalRemediationContingencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EnvironmentalRemediationContingencyAxis_d07af840-63b2-45c3-ac5c-def6e1cf7293" xlink:to="loc_us-gaap_EnvironmentalRemediationContingencyDomain_0e37833e-443b-4542-9c8c-aea686607b0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AsbestosSuitsMember_fc96a6a5-3892-4045-92ce-d842e481b428" xlink:href="ed-20221231.xsd#ed_AsbestosSuitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationContingencyDomain_0e37833e-443b-4542-9c8c-aea686607b0e" xlink:to="loc_ed_AsbestosSuitsMember_fc96a6a5-3892-4045-92ce-d842e481b428" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WorkersCompensationInsuranceMember_fad3fb6d-c080-45fc-994e-5a5706a45d89" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WorkersCompensationInsuranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EnvironmentalRemediationContingencyDomain_0e37833e-443b-4542-9c8c-aea686607b0e" xlink:to="loc_us-gaap_WorkersCompensationInsuranceMember_fad3fb6d-c080-45fc-994e-5a5706a45d89" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/MaterialContingenciesManhattanExplosionandFireDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#MaterialContingenciesManhattanExplosionandFireDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/MaterialContingenciesManhattanExplosionandFireDetails" xlink:type="extended" id="ief7b33d97b9d4328b5acedd57091441a_MaterialContingenciesManhattanExplosionandFireDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NumberofBuildingsDestroyedbyFire_40a14504-0bc7-4e95-ab64-aaca98586d82" xlink:href="ed-20221231.xsd#ed_NumberofBuildingsDestroyedbyFire"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_ed_NumberofBuildingsDestroyedbyFire_40a14504-0bc7-4e95-ab64-aaca98586d82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NumberOfPeopleDiedInExplosionAndFireIncident_6b72e78f-1314-42d0-ae5d-4173a446bbe3" xlink:href="ed-20221231.xsd#ed_NumberOfPeopleDiedInExplosionAndFireIncident"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_ed_NumberOfPeopleDiedInExplosionAndFireIncident_6b72e78f-1314-42d0-ae5d-4173a446bbe3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NumberOfPeopleInjuredInExplosionAndFireIncident_3bb0be06-c603-485a-b817-87aefc35d051" xlink:href="ed-20221231.xsd#ed_NumberOfPeopleInjuredInExplosionAndFireIncident"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_ed_NumberOfPeopleInjuredInExplosionAndFireIncident_3bb0be06-c603-485a-b817-87aefc35d051" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityNoncurrent_ffeab592-ef2b-455b-8ec2-7e22e4682ed1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_us-gaap_RegulatoryLiabilityNoncurrent_ffeab592-ef2b-455b-8ec2-7e22e4682ed1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyLossInPeriod_04b137ca-0199-4b88-9095-27a2420f453d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyLossInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_us-gaap_LossContingencyLossInPeriod_04b137ca-0199-4b88-9095-27a2420f453d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyPendingClaimsNumber_476e0461-2f0d-4460-b6d5-f652f6b36a2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyPendingClaimsNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_us-gaap_LossContingencyPendingClaimsNumber_476e0461-2f0d-4460-b6d5-f652f6b36a2d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_c4873af1-eae8-4de7-b9f3-9674b3ba356d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_c4873af1-eae8-4de7-b9f3-9674b3ba356d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuranceSettlementsReceivable_c904c3ef-d0c7-4cb0-bcc2-57bc6ca5d5a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InsuranceSettlementsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_us-gaap_InsuranceSettlementsReceivable_c904c3ef-d0c7-4cb0-bcc2-57bc6ca5d5a0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_9f2c9bfe-1fb7-42d3-912e-d06f07bbc02c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_dacf58c5-1b49-4f6e-9815-d49a30594676" xlink:to="loc_us-gaap_LossContingenciesTable_9f2c9bfe-1fb7-42d3-912e-d06f07bbc02c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_d7b967ed-60ce-4e6d-ba2e-3170f0fb49fe" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_9f2c9bfe-1fb7-42d3-912e-d06f07bbc02c" xlink:to="loc_srt_LitigationCaseAxis_d7b967ed-60ce-4e6d-ba2e-3170f0fb49fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_d7b967ed-60ce-4e6d-ba2e-3170f0fb49fe_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_d7b967ed-60ce-4e6d-ba2e-3170f0fb49fe" xlink:to="loc_srt_LitigationCaseTypeDomain_d7b967ed-60ce-4e6d-ba2e-3170f0fb49fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_2c1947a7-54a2-4999-a643-7ab268756e0f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_d7b967ed-60ce-4e6d-ba2e-3170f0fb49fe" xlink:to="loc_srt_LitigationCaseTypeDomain_2c1947a7-54a2-4999-a643-7ab268756e0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ManhattanExplosionAndFireMember_683a4eff-c108-4ef2-ab81-6abfe9d3ef11" xlink:href="ed-20221231.xsd#ed_ManhattanExplosionAndFireMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_2c1947a7-54a2-4999-a643-7ab268756e0f" xlink:to="loc_ed_ManhattanExplosionAndFireMember_683a4eff-c108-4ef2-ab81-6abfe9d3ef11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityAxis_3e45869f-81f6-4e9b-8e45-d340f801f332" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_9f2c9bfe-1fb7-42d3-912e-d06f07bbc02c" xlink:to="loc_us-gaap_RegulatoryLiabilityAxis_3e45869f-81f6-4e9b-8e45-d340f801f332" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_3e45869f-81f6-4e9b-8e45-d340f801f332_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_3e45869f-81f6-4e9b-8e45-d340f801f332" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_3e45869f-81f6-4e9b-8e45-d340f801f332_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilityDomain_66ca2066-35e6-4657-a2d8-e61d77c3e184" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryLiabilityAxis_3e45869f-81f6-4e9b-8e45-d340f801f332" xlink:to="loc_us-gaap_RegulatoryLiabilityDomain_66ca2066-35e6-4657-a2d8-e61d77c3e184" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SettlementofGasProceedingsMember_d8bf5443-4c2e-4dd5-ae6f-541d7fe6c382" xlink:href="ed-20221231.xsd#ed_SettlementofGasProceedingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilityDomain_66ca2066-35e6-4657-a2d8-e61d77c3e184" xlink:to="loc_ed_SettlementofGasProceedingsMember_d8bf5443-4c2e-4dd5-ae6f-541d7fe6c382" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/MaterialContingenciesTotalGuaranteesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#MaterialContingenciesTotalGuaranteesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/MaterialContingenciesTotalGuaranteesDetails" xlink:type="extended" id="i578edd20d4034892a63bb2ddb4b6b376_MaterialContingenciesTotalGuaranteesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_57cd80b1-172d-429f-9e79-0c73574232d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_546f1e26-0ca5-4047-b7f3-2ad50b12a71c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_57cd80b1-172d-429f-9e79-0c73574232d0" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_546f1e26-0ca5-4047-b7f3-2ad50b12a71c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_126e0bea-208d-47e0-b1fb-00749c44d60d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_57cd80b1-172d-429f-9e79-0c73574232d0" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_126e0bea-208d-47e0-b1fb-00749c44d60d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GuarantorObligationsTermAxis_ffe7e64c-c4aa-48e0-92a2-ed45fa7f77e7" xlink:href="ed-20221231.xsd#ed_GuarantorObligationsTermAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_126e0bea-208d-47e0-b1fb-00749c44d60d" xlink:to="loc_ed_GuarantorObligationsTermAxis_ffe7e64c-c4aa-48e0-92a2-ed45fa7f77e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GuarantorObligationsTermDomain_ffe7e64c-c4aa-48e0-92a2-ed45fa7f77e7_default" xlink:href="ed-20221231.xsd#ed_GuarantorObligationsTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_GuarantorObligationsTermAxis_ffe7e64c-c4aa-48e0-92a2-ed45fa7f77e7" xlink:to="loc_ed_GuarantorObligationsTermDomain_ffe7e64c-c4aa-48e0-92a2-ed45fa7f77e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GuarantorObligationsTermDomain_588dc873-003c-44db-8b1f-f0ca38e0eca0" xlink:href="ed-20221231.xsd#ed_GuarantorObligationsTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_GuarantorObligationsTermAxis_ffe7e64c-c4aa-48e0-92a2-ed45fa7f77e7" xlink:to="loc_ed_GuarantorObligationsTermDomain_588dc873-003c-44db-8b1f-f0ca38e0eca0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GuaranteeDurationOneToThreeYearsMember_9005222e-4a56-41ec-98d5-7560c00ef1d8" xlink:href="ed-20221231.xsd#ed_GuaranteeDurationOneToThreeYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_GuarantorObligationsTermDomain_588dc873-003c-44db-8b1f-f0ca38e0eca0" xlink:to="loc_ed_GuaranteeDurationOneToThreeYearsMember_9005222e-4a56-41ec-98d5-7560c00ef1d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GuaranteeDurationGreaterThanTenYearsMember_b80ec028-201d-4ae3-bdd7-697e7ef83d05" xlink:href="ed-20221231.xsd#ed_GuaranteeDurationGreaterThanTenYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_GuarantorObligationsTermDomain_588dc873-003c-44db-8b1f-f0ca38e0eca0" xlink:to="loc_ed_GuaranteeDurationGreaterThanTenYearsMember_b80ec028-201d-4ae3-bdd7-697e7ef83d05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GuaranteeDurationFourToTenYearsMember_c55d4cc2-37f9-4645-bf7b-a85df249121f" xlink:href="ed-20221231.xsd#ed_GuaranteeDurationFourToTenYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_GuarantorObligationsTermDomain_588dc873-003c-44db-8b1f-f0ca38e0eca0" xlink:to="loc_ed_GuaranteeDurationFourToTenYearsMember_c55d4cc2-37f9-4645-bf7b-a85df249121f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_c66fd5ec-166c-48eb-b773-f56f997056d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_126e0bea-208d-47e0-b1fb-00749c44d60d" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_c66fd5ec-166c-48eb-b773-f56f997056d3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_c66fd5ec-166c-48eb-b773-f56f997056d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_c66fd5ec-166c-48eb-b773-f56f997056d3" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_c66fd5ec-166c-48eb-b773-f56f997056d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_47f29fa5-0c49-4a4f-99b7-df2ec3995d61" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_c66fd5ec-166c-48eb-b773-f56f997056d3" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_47f29fa5-0c49-4a4f-99b7-df2ec3995d61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_2871fa01-17ff-4704-9c5d-a426a5d95c0f" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_47f29fa5-0c49-4a4f-99b7-df2ec3995d61" xlink:to="loc_ed_ConEdisonTransmissionMember_2871fa01-17ff-4704-9c5d-a426a5d95c0f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinancialAndPerformanceGuaranteeForCommodityTransactionsMember_d22a1e54-0d83-4d12-b96c-190fee7a05ba" xlink:href="ed-20221231.xsd#ed_FinancialAndPerformanceGuaranteeForCommodityTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_47f29fa5-0c49-4a4f-99b7-df2ec3995d61" xlink:to="loc_ed_FinancialAndPerformanceGuaranteeForCommodityTransactionsMember_d22a1e54-0d83-4d12-b96c-190fee7a05ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinancialAndPerformanceGuaranteeForRenewableElectricProductionProjectsMember_3cf7004f-cbb1-4739-9199-742b2b3840c9" xlink:href="ed-20221231.xsd#ed_FinancialAndPerformanceGuaranteeForRenewableElectricProductionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_47f29fa5-0c49-4a4f-99b7-df2ec3995d61" xlink:to="loc_ed_FinancialAndPerformanceGuaranteeForRenewableElectricProductionProjectsMember_3cf7004f-cbb1-4739-9199-742b2b3840c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinancialAndPerformanceGuaranteeOtherMember_5da306a4-82cb-4ed7-966b-4776732ad3ae" xlink:href="ed-20221231.xsd#ed_FinancialAndPerformanceGuaranteeOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_47f29fa5-0c49-4a4f-99b7-df2ec3995d61" xlink:to="loc_ed_FinancialAndPerformanceGuaranteeOtherMember_5da306a4-82cb-4ed7-966b-4776732ad3ae" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/MaterialContingenciesConEdisonTransmissionDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#MaterialContingenciesConEdisonTransmissionDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/MaterialContingenciesConEdisonTransmissionDetails" xlink:type="extended" id="id90cd34837ce430e877431c48565215f_MaterialContingenciesConEdisonTransmissionDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_21ab784f-e8d0-44a5-b5e8-372f3feb013e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_b6188a32-38d0-4536-b651-2afe0b4b4640" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_21ab784f-e8d0-44a5-b5e8-372f3feb013e" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_b6188a32-38d0-4536-b651-2afe0b4b4640" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PercentageOfEstimatedCostsOnProjects_c92a6f30-263c-482b-b6bd-a96b36b59d61" xlink:href="ed-20221231.xsd#ed_PercentageOfEstimatedCostsOnProjects"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_21ab784f-e8d0-44a5-b5e8-372f3feb013e" xlink:to="loc_ed_PercentageOfEstimatedCostsOnProjects_c92a6f30-263c-482b-b6bd-a96b36b59d61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_9bf8c846-08ff-4400-bd2a-cbf6eafb70d8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_21ab784f-e8d0-44a5-b5e8-372f3feb013e" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_9bf8c846-08ff-4400-bd2a-cbf6eafb70d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_f562657b-cb12-4adb-8ddd-e3d1e6c2d5da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_21ab784f-e8d0-44a5-b5e8-372f3feb013e" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_f562657b-cb12-4adb-8ddd-e3d1e6c2d5da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_8eb56f7b-0357-4ec1-ab56-bf101ebbea2b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_f562657b-cb12-4adb-8ddd-e3d1e6c2d5da" xlink:to="loc_srt_OwnershipAxis_8eb56f7b-0357-4ec1-ab56-bf101ebbea2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_8eb56f7b-0357-4ec1-ab56-bf101ebbea2b_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_8eb56f7b-0357-4ec1-ab56-bf101ebbea2b" xlink:to="loc_srt_OwnershipDomain_8eb56f7b-0357-4ec1-ab56-bf101ebbea2b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_491cf760-d0d1-40d5-a2e4-251bbbcd8065" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_8eb56f7b-0357-4ec1-ab56-bf101ebbea2b" xlink:to="loc_srt_OwnershipDomain_491cf760-d0d1-40d5-a2e4-251bbbcd8065" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NYTranscoMember_a9daf247-f1a1-45dc-afd0-27d7fc296cec" xlink:href="ed-20221231.xsd#ed_NYTranscoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_491cf760-d0d1-40d5-a2e4-251bbbcd8065" xlink:to="loc_ed_NYTranscoMember_a9daf247-f1a1-45dc-afd0-27d7fc296cec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_ceb66c26-7322-4363-a75e-55359bc0b050" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_f562657b-cb12-4adb-8ddd-e3d1e6c2d5da" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_ceb66c26-7322-4363-a75e-55359bc0b050" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_ceb66c26-7322-4363-a75e-55359bc0b050_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_ceb66c26-7322-4363-a75e-55359bc0b050" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_ceb66c26-7322-4363-a75e-55359bc0b050_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_abd3c36b-69c4-4d26-be3e-eee488378032" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_ceb66c26-7322-4363-a75e-55359bc0b050" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_abd3c36b-69c4-4d26-be3e-eee488378032" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PaymentGuaranteebyCETElectricofContributionstoNewYorkTranscoLLCMember_d9a7b019-e6da-421c-bee7-315c07d840bb" xlink:href="ed-20221231.xsd#ed_PaymentGuaranteebyCETElectricofContributionstoNewYorkTranscoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_abd3c36b-69c4-4d26-be3e-eee488378032" xlink:to="loc_ed_PaymentGuaranteebyCETElectricofContributionstoNewYorkTranscoLLCMember_d9a7b019-e6da-421c-bee7-315c07d840bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_8232c1ea-d805-4136-b6f6-37d92ac11324" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_abd3c36b-69c4-4d26-be3e-eee488378032" xlink:to="loc_ed_ConEdisonTransmissionMember_8232c1ea-d805-4136-b6f6-37d92ac11324" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/MaterialContingenciesOtherDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#MaterialContingenciesOtherDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/MaterialContingenciesOtherDetails" xlink:type="extended" id="iaf5a9731ff6b4350a2f97d9764859122_MaterialContingenciesOtherDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_beccfb82-b3cd-4e89-a070-4b0c88ee5ba3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_853e1d67-197e-4902-8949-989ce1ee4625" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_beccfb82-b3cd-4e89-a070-4b0c88ee5ba3" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_853e1d67-197e-4902-8949-989ce1ee4625" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_3c02e4ad-c690-488d-9f6b-91e9c668d3ba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_beccfb82-b3cd-4e89-a070-4b0c88ee5ba3" xlink:to="loc_us-gaap_DebtInstrumentTerm_3c02e4ad-c690-488d-9f6b-91e9c668d3ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_fd7ba082-db8a-4448-9b20-cd117aa99be0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_beccfb82-b3cd-4e89-a070-4b0c88ee5ba3" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_fd7ba082-db8a-4448-9b20-cd117aa99be0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_87a34374-71f7-427f-86a6-7d2570a250eb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_fd7ba082-db8a-4448-9b20-cd117aa99be0" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_87a34374-71f7-427f-86a6-7d2570a250eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_87a34374-71f7-427f-86a6-7d2570a250eb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_87a34374-71f7-427f-86a6-7d2570a250eb" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_87a34374-71f7-427f-86a6-7d2570a250eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_7c554d5b-2383-49b1-9d01-07c5e8b1ac79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GuaranteeObligationsNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_87a34374-71f7-427f-86a6-7d2570a250eb" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_7c554d5b-2383-49b1-9d01-07c5e8b1ac79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinancialGuaranteeforIndemnityAgreementsforSuretyBondsMember_7c4d8d49-a822-44e7-afd9-1b6c9682a08e" xlink:href="ed-20221231.xsd#ed_FinancialGuaranteeforIndemnityAgreementsforSuretyBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_7c554d5b-2383-49b1-9d01-07c5e8b1ac79" xlink:to="loc_ed_FinancialGuaranteeforIndemnityAgreementsforSuretyBondsMember_7c4d8d49-a822-44e7-afd9-1b6c9682a08e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinancialGuaranteeForObligationsUnderSeniorUnsecuredTermLoanCreditAgreementMember_f2406b7d-7c96-43f6-a1ad-72d72fc579fe" xlink:href="ed-20221231.xsd#ed_FinancialGuaranteeForObligationsUnderSeniorUnsecuredTermLoanCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_7c554d5b-2383-49b1-9d01-07c5e8b1ac79" xlink:to="loc_ed_FinancialGuaranteeForObligationsUnderSeniorUnsecuredTermLoanCreditAgreementMember_f2406b7d-7c96-43f6-a1ad-72d72fc579fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_71ccd909-3ce9-44f0-8823-04bf3f7e470c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_fd7ba082-db8a-4448-9b20-cd117aa99be0" xlink:to="loc_dei_LegalEntityAxis_71ccd909-3ce9-44f0-8823-04bf3f7e470c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_71ccd909-3ce9-44f0-8823-04bf3f7e470c_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_71ccd909-3ce9-44f0-8823-04bf3f7e470c" xlink:to="loc_dei_EntityDomain_71ccd909-3ce9-44f0-8823-04bf3f7e470c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4a784f11-2f7f-4749-8df2-1ae9f55a5455" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_71ccd909-3ce9-44f0-8823-04bf3f7e470c" xlink:to="loc_dei_EntityDomain_4a784f11-2f7f-4749-8df2-1ae9f55a5455" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_d4a81eb5-77df-4eaf-b76c-c9fb5dc02462" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4a784f11-2f7f-4749-8df2-1ae9f55a5455" xlink:to="loc_ed_CleanEnergyBusinessesMember_d4a81eb5-77df-4eaf-b76c-c9fb5dc02462" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ElectricityandGasPurchaseAgreementsSummaryofEstimatedCapacityandOtherFixedPaymentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ElectricityandGasPurchaseAgreementsSummaryofEstimatedCapacityandOtherFixedPaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ElectricityandGasPurchaseAgreementsSummaryofEstimatedCapacityandOtherFixedPaymentsDetails" xlink:type="extended" id="i3ee90eef0cd9435f955754acd5ca9227_ElectricityandGasPurchaseAgreementsSummaryofEstimatedCapacityandOtherFixedPaymentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligationDueInNextTwelveMonths_5645efa4-1956-442e-beff-d5fb2af91fc9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligationDueInNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_ContractualObligationDueInNextTwelveMonths_5645efa4-1956-442e-beff-d5fb2af91fc9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligationDueInSecondYear_901d460a-27ad-4dcc-9839-d0f18f98c2ea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligationDueInSecondYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_ContractualObligationDueInSecondYear_901d460a-27ad-4dcc-9839-d0f18f98c2ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligationDueInThirdYear_c620ba70-5eec-4eda-aacc-b9abaeda51d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligationDueInThirdYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_ContractualObligationDueInThirdYear_c620ba70-5eec-4eda-aacc-b9abaeda51d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligationDueInFourthYear_e9f465d5-f928-4841-ba8f-8e6474374e25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligationDueInFourthYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_ContractualObligationDueInFourthYear_e9f465d5-f928-4841-ba8f-8e6474374e25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligationDueInFifthYear_d9b8ec6c-c6ec-43e1-8a66-fb37a6056982" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligationDueInFifthYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_ContractualObligationDueInFifthYear_d9b8ec6c-c6ec-43e1-8a66-fb37a6056982" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligationDueAfterFifthYear_9fea6bf0-22dc-4f24-aa6b-478d2b488a12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractualObligationDueAfterFifthYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_ContractualObligationDueAfterFifthYear_9fea6bf0-22dc-4f24-aa6b-478d2b488a12" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_fe28a711-8f26-4afe-bfb3-68f78872db3d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractsForPurchaseOfElectricPowerTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_87289ede-7716-4a9d-aba5-2ff81aa7b97d" xlink:to="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_fe28a711-8f26-4afe-bfb3-68f78872db3d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_163d6a72-7a6c-4632-b26e-246b56493ddd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_fe28a711-8f26-4afe-bfb3-68f78872db3d" xlink:to="loc_dei_LegalEntityAxis_163d6a72-7a6c-4632-b26e-246b56493ddd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_163d6a72-7a6c-4632-b26e-246b56493ddd_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_163d6a72-7a6c-4632-b26e-246b56493ddd" xlink:to="loc_dei_EntityDomain_163d6a72-7a6c-4632-b26e-246b56493ddd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b9365c92-1193-467c-b298-471317c07ee5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_163d6a72-7a6c-4632-b26e-246b56493ddd" xlink:to="loc_dei_EntityDomain_b9365c92-1193-467c-b298-471317c07ee5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_70cf7c84-ea7c-42d4-b027-f9c40d09c48a" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b9365c92-1193-467c-b298-471317c07ee5" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_70cf7c84-ea7c-42d4-b027-f9c40d09c48a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AgreementAxis_ef040677-92a0-4ad0-889f-20025964eb90" xlink:href="ed-20221231.xsd#ed_AgreementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_fe28a711-8f26-4afe-bfb3-68f78872db3d" xlink:to="loc_ed_AgreementAxis_ef040677-92a0-4ad0-889f-20025964eb90" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AgreementDomain_ef040677-92a0-4ad0-889f-20025964eb90_default" xlink:href="ed-20221231.xsd#ed_AgreementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_AgreementAxis_ef040677-92a0-4ad0-889f-20025964eb90" xlink:to="loc_ed_AgreementDomain_ef040677-92a0-4ad0-889f-20025964eb90_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AgreementDomain_6cb0db7f-5a5a-43b9-937c-13fb4e18e107" xlink:href="ed-20221231.xsd#ed_AgreementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_AgreementAxis_ef040677-92a0-4ad0-889f-20025964eb90" xlink:to="loc_ed_AgreementDomain_6cb0db7f-5a5a-43b9-937c-13fb4e18e107" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricityPowerPurchaseAgreementsMember_8768a4fa-ce23-4b98-990e-9a480955d424" xlink:href="ed-20221231.xsd#ed_ElectricityPowerPurchaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_AgreementDomain_6cb0db7f-5a5a-43b9-937c-13fb4e18e107" xlink:to="loc_ed_ElectricityPowerPurchaseAgreementsMember_8768a4fa-ce23-4b98-990e-9a480955d424" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NaturalGasMember_16d42d6c-dbdc-437c-9275-a704499df941" xlink:href="ed-20221231.xsd#ed_NaturalGasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_AgreementDomain_6cb0db7f-5a5a-43b9-937c-13fb4e18e107" xlink:to="loc_ed_NaturalGasMember_16d42d6c-dbdc-437c-9275-a704499df941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasTransportationAndStorageMember_756b51d8-5c19-4608-bf1a-64de2474affb" xlink:href="ed-20221231.xsd#ed_GasTransportationAndStorageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_AgreementDomain_6cb0db7f-5a5a-43b9-937c-13fb4e18e107" xlink:to="loc_ed_GasTransportationAndStorageMember_756b51d8-5c19-4608-bf1a-64de2474affb" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ElectricityandGasPurchaseAgreementsSummaryofCapacityEnergyandOtherFixedPaymentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ElectricityandGasPurchaseAgreementsSummaryofCapacityEnergyandOtherFixedPaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ElectricityandGasPurchaseAgreementsSummaryofCapacityEnergyandOtherFixedPaymentsDetails" xlink:type="extended" id="i0932b6b09429495b9102cbe32b617464_ElectricityandGasPurchaseAgreementsSummaryofCapacityEnergyandOtherFixedPaymentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_65c8f327-a70f-48ee-92d8-f0042cbbbe22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LongtermContractforPurchaseofCapacityandEnergyAmountofFixedPayments_b05d5c6f-66a4-4da1-97d8-e0b54a8a64ae" xlink:href="ed-20221231.xsd#ed_LongtermContractforPurchaseofCapacityandEnergyAmountofFixedPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_65c8f327-a70f-48ee-92d8-f0042cbbbe22" xlink:to="loc_ed_LongtermContractforPurchaseofCapacityandEnergyAmountofFixedPayments_b05d5c6f-66a4-4da1-97d8-e0b54a8a64ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_0a321325-f683-450c-83d8-0350cd26bb81" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractsForPurchaseOfElectricPowerTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerLineItems_65c8f327-a70f-48ee-92d8-f0042cbbbe22" xlink:to="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_0a321325-f683-450c-83d8-0350cd26bb81" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4a543bda-5cb0-4d30-a1d5-44593e250787" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_0a321325-f683-450c-83d8-0350cd26bb81" xlink:to="loc_dei_LegalEntityAxis_4a543bda-5cb0-4d30-a1d5-44593e250787" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4a543bda-5cb0-4d30-a1d5-44593e250787_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4a543bda-5cb0-4d30-a1d5-44593e250787" xlink:to="loc_dei_EntityDomain_4a543bda-5cb0-4d30-a1d5-44593e250787_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_99be43c8-a278-44e6-a717-8736e007c7d4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4a543bda-5cb0-4d30-a1d5-44593e250787" xlink:to="loc_dei_EntityDomain_99be43c8-a278-44e6-a717-8736e007c7d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_be1b00c6-5c04-49ed-a5e6-6bbf78badf36" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_99be43c8-a278-44e6-a717-8736e007c7d4" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_be1b00c6-5c04-49ed-a5e6-6bbf78badf36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_648da17f-1bcb-444a-9b3b-b8dda644a905" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermContractsForPurchaseOfElectricPowerTable_0a321325-f683-450c-83d8-0350cd26bb81" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_648da17f-1bcb-444a-9b3b-b8dda644a905" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_648da17f-1bcb-444a-9b3b-b8dda644a905_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_648da17f-1bcb-444a-9b3b-b8dda644a905" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_648da17f-1bcb-444a-9b3b-b8dda644a905_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_55b5d6a1-4c30-4fac-bc18-5a40e0988898" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermContractForPurchaseOfElectricPowerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerAxis_648da17f-1bcb-444a-9b3b-b8dda644a905" xlink:to="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_55b5d6a1-4c30-4fac-bc18-5a40e0988898" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AstoriaGeneratingCompanyMember_e6e8857e-613a-46c9-a7af-c471ae323902" xlink:href="ed-20221231.xsd#ed_AstoriaGeneratingCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_55b5d6a1-4c30-4fac-bc18-5a40e0988898" xlink:to="loc_ed_AstoriaGeneratingCompanyMember_e6e8857e-613a-46c9-a7af-c471ae323902" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BrooklynMember_17d3aad9-cb0c-4ec6-b953-1453665bfd73" xlink:href="ed-20221231.xsd#ed_BrooklynMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_55b5d6a1-4c30-4fac-bc18-5a40e0988898" xlink:to="loc_ed_BrooklynMember_17d3aad9-cb0c-4ec6-b953-1453665bfd73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasTransportationAndStorageMember_e78004f4-ae59-4095-82c0-19b0ffce7e98" xlink:href="ed-20221231.xsd#ed_GasTransportationAndStorageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermContractForPurchaseOfElectricPowerDomain_55b5d6a1-4c30-4fac-bc18-5a40e0988898" xlink:to="loc_ed_GasTransportationAndStorageMember_e78004f4-ae59-4095-82c0-19b0ffce7e98" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/LeasesAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#LeasesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/LeasesAdditionalInformationDetails" xlink:type="extended" id="i8f37caac538d4ad69a43b38a3810bdd2_LeasesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_022bdab3-c47c-4b67-96b1-e312f0505514" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_022bdab3-c47c-4b67-96b1-e312f0505514" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_8f6ac6fb-2c53-4895-9f31-68b4a3a21d00" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_8f6ac6fb-2c53-4895-9f31-68b4a3a21d00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectFinancingLeaseResidualValueOfLeasedAsset_527fcb95-6556-4fb2-add8-a22e3c7a0da3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DirectFinancingLeaseResidualValueOfLeasedAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_us-gaap_DirectFinancingLeaseResidualValueOfLeasedAsset_527fcb95-6556-4fb2-add8-a22e3c7a0da3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DirectFinancingLeaseAccumulatedAmortization_68139741-cae0-402f-a2ac-74bb80d5428b" xlink:href="ed-20221231.xsd#ed_DirectFinancingLeaseAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_ed_DirectFinancingLeaseAccumulatedAmortization_68139741-cae0-402f-a2ac-74bb80d5428b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_8389b53c-1224-4cdf-a6a0-f3ebe9efc86b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_8389b53c-1224-4cdf-a6a0-f3ebe9efc86b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RightOfUseAssetHeldForSale_51e7831d-52d9-4bd5-a2ec-c785c88c8b23" xlink:href="ed-20221231.xsd#ed_RightOfUseAssetHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_ed_RightOfUseAssetHeldForSale_51e7831d-52d9-4bd5-a2ec-c785c88c8b23" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_2f9ef4e1-18ac-4f5f-a232-468d5c2d3e04" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_280f2fcc-dda9-45e0-bbe4-9b19f37f6ce3" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_2f9ef4e1-18ac-4f5f-a232-468d5c2d3e04" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_9502f63e-5aae-4572-8c9b-1f4869b988e6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_2f9ef4e1-18ac-4f5f-a232-468d5c2d3e04" xlink:to="loc_srt_RangeAxis_9502f63e-5aae-4572-8c9b-1f4869b988e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9502f63e-5aae-4572-8c9b-1f4869b988e6_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_9502f63e-5aae-4572-8c9b-1f4869b988e6" xlink:to="loc_srt_RangeMember_9502f63e-5aae-4572-8c9b-1f4869b988e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_31b9fa97-6147-494e-a317-4dd96a3b5bb8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_9502f63e-5aae-4572-8c9b-1f4869b988e6" xlink:to="loc_srt_RangeMember_31b9fa97-6147-494e-a317-4dd96a3b5bb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_6bd61095-6144-4d9a-a2d9-273c5c21e0b6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_31b9fa97-6147-494e-a317-4dd96a3b5bb8" xlink:to="loc_srt_MinimumMember_6bd61095-6144-4d9a-a2d9-273c5c21e0b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c27eb1f1-c118-4e91-b05d-2bc0197615a2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_31b9fa97-6147-494e-a317-4dd96a3b5bb8" xlink:to="loc_srt_MaximumMember_c27eb1f1-c118-4e91-b05d-2bc0197615a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5787e805-e8a2-4d1f-aeb7-376b10128c70" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_2f9ef4e1-18ac-4f5f-a232-468d5c2d3e04" xlink:to="loc_dei_LegalEntityAxis_5787e805-e8a2-4d1f-aeb7-376b10128c70" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5787e805-e8a2-4d1f-aeb7-376b10128c70_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5787e805-e8a2-4d1f-aeb7-376b10128c70" xlink:to="loc_dei_EntityDomain_5787e805-e8a2-4d1f-aeb7-376b10128c70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2e9b85c2-b0bd-4fd3-9f54-bf30e56f7199" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5787e805-e8a2-4d1f-aeb7-376b10128c70" xlink:to="loc_dei_EntityDomain_2e9b85c2-b0bd-4fd3-9f54-bf30e56f7199" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f65ecaa6-d20e-4911-b34e-117f2089d018" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2e9b85c2-b0bd-4fd3-9f54-bf30e56f7199" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_f65ecaa6-d20e-4911-b34e-117f2089d018" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6acf5d35-f146-4811-96e7-d8d83db0d12c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_2f9ef4e1-18ac-4f5f-a232-468d5c2d3e04" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6acf5d35-f146-4811-96e7-d8d83db0d12c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6acf5d35-f146-4811-96e7-d8d83db0d12c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6acf5d35-f146-4811-96e7-d8d83db0d12c" xlink:to="loc_us-gaap_SegmentDomain_6acf5d35-f146-4811-96e7-d8d83db0d12c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a6788225-52c1-436d-8a33-10a11fd5b7a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6acf5d35-f146-4811-96e7-d8d83db0d12c" xlink:to="loc_us-gaap_SegmentDomain_a6788225-52c1-436d-8a33-10a11fd5b7a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_a68c416a-8886-4dbf-9615-fd1449382c6a" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a6788225-52c1-436d-8a33-10a11fd5b7a1" xlink:to="loc_ed_CleanEnergyBusinessesMember_a68c416a-8886-4dbf-9615-fd1449382c6a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/LeasesLeaseCostandCashFlowsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#LeasesLeaseCostandCashFlowsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/LeasesLeaseCostandCashFlowsDetails" xlink:type="extended" id="i52dd6baa27a44a9090cb6e82983a57b3_LeasesLeaseCostandCashFlowsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_5cb1a259-fde5-45d6-99ec-a1d77112b7dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_94e49cab-d916-404c-87d0-f86f22a36d79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_5cb1a259-fde5-45d6-99ec-a1d77112b7dd" xlink:to="loc_us-gaap_OperatingLeaseCost_94e49cab-d916-404c-87d0-f86f22a36d79" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasePayments_8380f266-d513-4e50-986b-0503258a9de3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeasePayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_5cb1a259-fde5-45d6-99ec-a1d77112b7dd" xlink:to="loc_us-gaap_OperatingLeasePayments_8380f266-d513-4e50-986b-0503258a9de3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_78db4df3-e23b-4cee-930b-2d351bdb401c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_5cb1a259-fde5-45d6-99ec-a1d77112b7dd" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_78db4df3-e23b-4cee-930b-2d351bdb401c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b5a6f0e3-0de3-418f-a0a8-0a1f6ec3fcde" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_78db4df3-e23b-4cee-930b-2d351bdb401c" xlink:to="loc_dei_LegalEntityAxis_b5a6f0e3-0de3-418f-a0a8-0a1f6ec3fcde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b5a6f0e3-0de3-418f-a0a8-0a1f6ec3fcde_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b5a6f0e3-0de3-418f-a0a8-0a1f6ec3fcde" xlink:to="loc_dei_EntityDomain_b5a6f0e3-0de3-418f-a0a8-0a1f6ec3fcde_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9ba18bfd-9859-468f-9408-b13a076e2b91" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b5a6f0e3-0de3-418f-a0a8-0a1f6ec3fcde" xlink:to="loc_dei_EntityDomain_9ba18bfd-9859-468f-9408-b13a076e2b91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_de537222-1b38-4bb8-a8de-3e7e325ff733" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9ba18bfd-9859-468f-9408-b13a076e2b91" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_de537222-1b38-4bb8-a8de-3e7e325ff733" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/LeasesOtherRelatedInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#LeasesOtherRelatedInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/LeasesOtherRelatedInformationDetails" xlink:type="extended" id="iaa9def0f21734892a746e2920a05938b_LeasesOtherRelatedInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_740771f0-5cd0-426c-8896-57f622da02e4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_2cd69543-be9c-4c59-90a7-494937c1f3ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_740771f0-5cd0-426c-8896-57f622da02e4" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_2cd69543-be9c-4c59-90a7-494937c1f3ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_9631edd9-03f9-4d54-aa94-d0f43d6cf2aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_740771f0-5cd0-426c-8896-57f622da02e4" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_9631edd9-03f9-4d54-aa94-d0f43d6cf2aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_a981d90e-c76b-4536-9dff-8ab6e7e8c4da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_740771f0-5cd0-426c-8896-57f622da02e4" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_a981d90e-c76b-4536-9dff-8ab6e7e8c4da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_a439027f-3e41-4041-bcb7-e8da4b5e522c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_740771f0-5cd0-426c-8896-57f622da02e4" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_a439027f-3e41-4041-bcb7-e8da4b5e522c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_0405b2c7-456f-4a18-8696-a816cbdf8d13" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_740771f0-5cd0-426c-8896-57f622da02e4" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_0405b2c7-456f-4a18-8696-a816cbdf8d13" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5d121e8c-66f9-452a-8c17-de34dc1274a5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_0405b2c7-456f-4a18-8696-a816cbdf8d13" xlink:to="loc_dei_LegalEntityAxis_5d121e8c-66f9-452a-8c17-de34dc1274a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5d121e8c-66f9-452a-8c17-de34dc1274a5_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5d121e8c-66f9-452a-8c17-de34dc1274a5" xlink:to="loc_dei_EntityDomain_5d121e8c-66f9-452a-8c17-de34dc1274a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_53ef6397-8df7-4cd7-b5b9-f265aca9313c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5d121e8c-66f9-452a-8c17-de34dc1274a5" xlink:to="loc_dei_EntityDomain_53ef6397-8df7-4cd7-b5b9-f265aca9313c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_8f330c6f-d1b3-4bb5-b8eb-4d2dce236810" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_53ef6397-8df7-4cd7-b5b9-f265aca9313c" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_8f330c6f-d1b3-4bb5-b8eb-4d2dce236810" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_85406c2e-ce62-4a79-8d16-1cdf13696ba1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_0405b2c7-456f-4a18-8696-a816cbdf8d13" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_85406c2e-ce62-4a79-8d16-1cdf13696ba1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_85406c2e-ce62-4a79-8d16-1cdf13696ba1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_85406c2e-ce62-4a79-8d16-1cdf13696ba1" xlink:to="loc_us-gaap_SegmentDomain_85406c2e-ce62-4a79-8d16-1cdf13696ba1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_1906ca77-b657-4408-9b21-3e841442d396" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_85406c2e-ce62-4a79-8d16-1cdf13696ba1" xlink:to="loc_us-gaap_SegmentDomain_1906ca77-b657-4408-9b21-3e841442d396" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_80f97a41-53a4-470a-8f9f-f81c9d66bdfa" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1906ca77-b657-4408-9b21-3e841442d396" xlink:to="loc_ed_CleanEnergyBusinessesMember_80f97a41-53a4-470a-8f9f-f81c9d66bdfa" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/LeasesFutureMinimumLeasePaymentsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#LeasesFutureMinimumLeasePaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/LeasesFutureMinimumLeasePaymentsDetails" xlink:type="extended" id="ice81c9473d4c448bac4451e686f8e1ab_LeasesFutureMinimumLeasePaymentsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:to="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths_77599abc-08f3-4ce2-bea3-3e92eb275580" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths_77599abc-08f3-4ce2-bea3-3e92eb275580" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo_e05d3cc1-cddb-4f01-aac4-d5da1dbd453c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo_e05d3cc1-cddb-4f01-aac4-d5da1dbd453c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree_fa144004-8144-4a95-b62a-5f96d26d362c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree_fa144004-8144-4a95-b62a-5f96d26d362c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour_081e6106-0518-47e3-a6b0-e6eb42b5ab5f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour_081e6106-0518-47e3-a6b0-e6eb42b5ab5f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive_458c2743-12db-4caf-9298-c9320bb79050" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive_458c2743-12db-4caf-9298-c9320bb79050" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive_baa913eb-bbd4-43ba-9863-9637e012cab8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive_baa913eb-bbd4-43ba-9863-9637e012cab8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_9c6a5569-d55d-4bfa-93da-cb4839572e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_9c6a5569-d55d-4bfa-93da-cb4839572e2d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_82b8fdfe-0044-4a26-8a74-6cba27758169" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_82b8fdfe-0044-4a26-8a74-6cba27758169" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_c280bbd9-ca88-4ab3-8fd2-8036f6bcee97" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_OperatingLeaseLiability_c280bbd9-ca88-4ab3-8fd2-8036f6bcee97" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_4cb83e95-cc2f-4d5e-9c24-52b8109eb7f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_4cb83e95-cc2f-4d5e-9c24-52b8109eb7f3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OperatingLeaseLiabilityCurrentHeldForSale_0cc1a627-4091-4ee9-b538-b7c56f50d44c" xlink:href="ed-20221231.xsd#ed_OperatingLeaseLiabilityCurrentHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_ed_OperatingLeaseLiabilityCurrentHeldForSale_0cc1a627-4091-4ee9-b538-b7c56f50d44c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_4698637e-6787-4f42-835c-db8621edd512" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_4698637e-6787-4f42-835c-db8621edd512" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OperatingLeaseLiabilityNonCurrentHeldForSale_32d8c636-9f54-4580-8dfe-e6b6de68423e" xlink:href="ed-20221231.xsd#ed_OperatingLeaseLiabilityNonCurrentHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_ed_OperatingLeaseLiabilityNonCurrentHeldForSale_32d8c636-9f54-4580-8dfe-e6b6de68423e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OperatingLeaseLiabilityIncludingHeldForSale_bf4f698d-5c1d-4c90-85bd-6f9dda928cff" xlink:href="ed-20221231.xsd#ed_OperatingLeaseLiabilityIncludingHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_30f36189-b9bf-4797-b05c-75247352cd68" xlink:to="loc_ed_OperatingLeaseLiabilityIncludingHeldForSale_bf4f698d-5c1d-4c90-85bd-6f9dda928cff" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:to="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths_3954fb66-2297-4a2a-b197-c39a53a32926" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths_3954fb66-2297-4a2a-b197-c39a53a32926" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearTwo_1ed5959f-fcb4-486e-9fb8-f8a172e35144" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearTwo_1ed5959f-fcb4-486e-9fb8-f8a172e35144" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearThree_15d5ee16-91f8-4343-b271-0fa52b8b791f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearThree_15d5ee16-91f8-4343-b271-0fa52b8b791f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearFour_860ab064-eea5-446f-8f2b-faf52acfa8ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearFour_860ab064-eea5-446f-8f2b-faf52acfa8ca" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearFive_d048b3d9-f520-49db-b635-bcb426acbee9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingYearFive_d048b3d9-f520-49db-b635-bcb426acbee9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive_448e6ea1-7738-4dc1-a1e5-e3e09a8d246c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive_448e6ea1-7738-4dc1-a1e5-e3e09a8d246c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_b6d50256-d422-4af2-b464-b790303a5a60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_b6d50256-d422-4af2-b464-b790303a5a60" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_e17b9587-2c4c-45d0-8cf0-fe4d38ea8cb0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_e17b9587-2c4c-45d0-8cf0-fe4d38ea8cb0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_1e7f0f58-3e97-481b-bda0-f172f495e838" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiability_1e7f0f58-3e97-481b-bda0-f172f495e838" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_710c700f-2b44-4541-bfc3-f18420d5cddc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_710c700f-2b44-4541-bfc3-f18420d5cddc" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_f5e2291e-5a0e-417a-acff-e61f64a7b8db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_f5e2291e-5a0e-417a-acff-e61f64a7b8db" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinanceLeaseLiabilityIncludingHeldForSaleAmounts_a393d547-7826-41e2-a552-c673b4921e0d" xlink:href="ed-20221231.xsd#ed_FinanceLeaseLiabilityIncludingHeldForSaleAmounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_d589c042-b322-4b27-8d8f-a8f6aedb3270" xlink:to="loc_ed_FinanceLeaseLiabilityIncludingHeldForSaleAmounts_a393d547-7826-41e2-a552-c673b4921e0d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_dbd85028-3646-4bb9-b31c-30d42943b60f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_dbd85028-3646-4bb9-b31c-30d42943b60f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_59cc82d2-8987-4ee7-a601-b588ecfc6eda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_59cc82d2-8987-4ee7-a601-b588ecfc6eda" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_bd5df311-59c1-48f0-aa9c-5faeea49861f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:to="loc_us-gaap_FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList_bd5df311-59c1-48f0-aa9c-5faeea49861f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_1e89ab3d-c1af-462c-b3b2-bdb3b444cee5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4c9bb92c-0f3c-4235-8ea8-9c996e979355" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_1e89ab3d-c1af-462c-b3b2-bdb3b444cee5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ec3a054e-f72f-4975-ae40-1e9d8acfae2a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_1e89ab3d-c1af-462c-b3b2-bdb3b444cee5" xlink:to="loc_dei_LegalEntityAxis_ec3a054e-f72f-4975-ae40-1e9d8acfae2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ec3a054e-f72f-4975-ae40-1e9d8acfae2a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ec3a054e-f72f-4975-ae40-1e9d8acfae2a" xlink:to="loc_dei_EntityDomain_ec3a054e-f72f-4975-ae40-1e9d8acfae2a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7e0abaf8-99de-4aaa-8145-3e62e91fb126" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ec3a054e-f72f-4975-ae40-1e9d8acfae2a" xlink:to="loc_dei_EntityDomain_7e0abaf8-99de-4aaa-8145-3e62e91fb126" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_94a38a84-ad71-4c97-a232-d87ef0c1ff16" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7e0abaf8-99de-4aaa-8145-3e62e91fb126" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_94a38a84-ad71-4c97-a232-d87ef0c1ff16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_75eb6070-cb25-4818-b574-d42f95211eff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_1e89ab3d-c1af-462c-b3b2-bdb3b444cee5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_75eb6070-cb25-4818-b574-d42f95211eff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_75eb6070-cb25-4818-b574-d42f95211eff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_75eb6070-cb25-4818-b574-d42f95211eff" xlink:to="loc_us-gaap_SegmentDomain_75eb6070-cb25-4818-b574-d42f95211eff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b5e38a0c-edd3-4e67-8928-6fee3a7a5a78" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_75eb6070-cb25-4818-b574-d42f95211eff" xlink:to="loc_us-gaap_SegmentDomain_b5e38a0c-edd3-4e67-8928-6fee3a7a5a78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_caef3029-abb8-4291-b6d7-2e116ded421d" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_b5e38a0c-edd3-4e67-8928-6fee3a7a5a78" xlink:to="loc_ed_CleanEnergyBusinessesMember_caef3029-abb8-4291-b6d7-2e116ded421d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/GoodwillDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#GoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/GoodwillDetails" xlink:type="extended" id="i5d175dc6a79e40c98a1af5004720e1e9_GoodwillDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_28cf09c1-73cc-402d-9b85-55369b487dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_c7aa2344-b44e-49a3-8cea-a857e40bfb50" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_28cf09c1-73cc-402d-9b85-55369b487dc6" xlink:to="loc_us-gaap_Goodwill_c7aa2344-b44e-49a3-8cea-a857e40bfb50" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_5e241fcf-3368-40c9-b75e-55e2979cc86d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_28cf09c1-73cc-402d-9b85-55369b487dc6" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_5e241fcf-3368-40c9-b75e-55e2979cc86d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_8d7a902f-3f2a-4dcd-8510-32f7d9ce7d27" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_28cf09c1-73cc-402d-9b85-55369b487dc6" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_8d7a902f-3f2a-4dcd-8510-32f7d9ce7d27" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_ecf7262d-223b-4395-9e1a-e15f97d406d8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_8d7a902f-3f2a-4dcd-8510-32f7d9ce7d27" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_ecf7262d-223b-4395-9e1a-e15f97d406d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ecf7262d-223b-4395-9e1a-e15f97d406d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_ecf7262d-223b-4395-9e1a-e15f97d406d8" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ecf7262d-223b-4395-9e1a-e15f97d406d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a744c2b0-2d5e-43c9-99df-a56d63a0894a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_ecf7262d-223b-4395-9e1a-e15f97d406d8" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a744c2b0-2d5e-43c9-99df-a56d63a0894a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ORMergerMember_77b373da-5ba6-436f-87ca-bbbe528f0c3f" xlink:href="ed-20221231.xsd#ed_ORMergerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a744c2b0-2d5e-43c9-99df-a56d63a0894a" xlink:to="loc_ed_ORMergerMember_77b373da-5ba6-436f-87ca-bbbe528f0c3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasStorageCompanyMember_04a0c9c3-c7cb-4b1e-9ab4-3afab6cd2756" xlink:href="ed-20221231.xsd#ed_GasStorageCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a744c2b0-2d5e-43c9-99df-a56d63a0894a" xlink:to="loc_ed_GasStorageCompanyMember_04a0c9c3-c7cb-4b1e-9ab4-3afab6cd2756" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ResidentialSolarCompanyMember_e404201e-65ba-478d-bd07-d0382b761143" xlink:href="ed-20221231.xsd#ed_ResidentialSolarCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a744c2b0-2d5e-43c9-99df-a56d63a0894a" xlink:to="loc_ed_ResidentialSolarCompanyMember_e404201e-65ba-478d-bd07-d0382b761143" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BatteryStorageCompanyMember_4ff30f75-6702-4751-a071-312560dc12d3" xlink:href="ed-20221231.xsd#ed_BatteryStorageCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a744c2b0-2d5e-43c9-99df-a56d63a0894a" xlink:to="loc_ed_BatteryStorageCompanyMember_4ff30f75-6702-4751-a071-312560dc12d3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4ce97d13-1097-45d6-adba-172a92184de3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_8d7a902f-3f2a-4dcd-8510-32f7d9ce7d27" xlink:to="loc_dei_LegalEntityAxis_4ce97d13-1097-45d6-adba-172a92184de3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4ce97d13-1097-45d6-adba-172a92184de3_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4ce97d13-1097-45d6-adba-172a92184de3" xlink:to="loc_dei_EntityDomain_4ce97d13-1097-45d6-adba-172a92184de3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_707affc8-d1f7-486d-90e0-6df3f3531801" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4ce97d13-1097-45d6-adba-172a92184de3" xlink:to="loc_dei_EntityDomain_707affc8-d1f7-486d-90e0-6df3f3531801" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_29fd2de7-1e51-42ef-a596-2806437ce3bb" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_707affc8-d1f7-486d-90e0-6df3f3531801" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_29fd2de7-1e51-42ef-a596-2806437ce3bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_2282a59b-5a81-453a-a68b-100d0ef9f10d" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_707affc8-d1f7-486d-90e0-6df3f3531801" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_2282a59b-5a81-453a-a68b-100d0ef9f10d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonGasPipelineandStorageLLCMember_7d5aa00e-fca1-4b9d-b7c1-7e56018f1830" xlink:href="ed-20221231.xsd#ed_ConEdisonGasPipelineandStorageLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_707affc8-d1f7-486d-90e0-6df3f3531801" xlink:to="loc_ed_ConEdisonGasPipelineandStorageLLCMember_7d5aa00e-fca1-4b9d-b7c1-7e56018f1830" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_414ae74a-f76a-4744-aed7-2d66eb205b21" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_8d7a902f-3f2a-4dcd-8510-32f7d9ce7d27" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_414ae74a-f76a-4744-aed7-2d66eb205b21" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_414ae74a-f76a-4744-aed7-2d66eb205b21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_414ae74a-f76a-4744-aed7-2d66eb205b21" xlink:to="loc_us-gaap_SegmentDomain_414ae74a-f76a-4744-aed7-2d66eb205b21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_1abfaed6-1055-49d7-af3a-6556987aa6da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_414ae74a-f76a-4744-aed7-2d66eb205b21" xlink:to="loc_us-gaap_SegmentDomain_1abfaed6-1055-49d7-af3a-6556987aa6da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_6c4c5c35-2c02-4308-b1f8-42e0a8b7c54a" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1abfaed6-1055-49d7-af3a-6556987aa6da" xlink:to="loc_ed_CleanEnergyBusinessesMember_6c4c5c35-2c02-4308-b1f8-42e0a8b7c54a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/IncomeTaxScheduleofComponentsofIncomeTaxDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#IncomeTaxScheduleofComponentsofIncomeTaxDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/IncomeTaxScheduleofComponentsofIncomeTaxDetails" xlink:type="extended" id="ic08ec986cf464784a1f5a1c419e40d7b_IncomeTaxScheduleofComponentsofIncomeTaxDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_41e1c7dd-f792-44ab-8ba9-ff35626a8756" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_d6616e9b-c4b0-410f-a9ab-7c12b556aa37" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_41e1c7dd-f792-44ab-8ba9-ff35626a8756" xlink:to="loc_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_d6616e9b-c4b0-410f-a9ab-7c12b556aa37" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_ea29fa93-bbc0-43cb-b415-6a53e9780b74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_d6616e9b-c4b0-410f-a9ab-7c12b556aa37" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_ea29fa93-bbc0-43cb-b415-6a53e9780b74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_83318f05-7eba-472d-9b88-507eb9fc47dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_d6616e9b-c4b0-410f-a9ab-7c12b556aa37" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_83318f05-7eba-472d-9b88-507eb9fc47dd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_cbfd01be-de2e-468a-b58d-9b01f34f46ee" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_41e1c7dd-f792-44ab-8ba9-ff35626a8756" xlink:to="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_cbfd01be-de2e-468a-b58d-9b01f34f46ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_67f62b8c-95ab-442f-9a0d-33468d893bcb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_cbfd01be-de2e-468a-b58d-9b01f34f46ee" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_67f62b8c-95ab-442f-9a0d-33468d893bcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_ba057cea-dc2b-449e-b95d-539485f3f79b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_cbfd01be-de2e-468a-b58d-9b01f34f46ee" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_ba057cea-dc2b-449e-b95d-539485f3f79b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_0d580fe0-ef81-4a7c-bc16-11325c719630" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract_cbfd01be-de2e-468a-b58d-9b01f34f46ee" xlink:to="loc_us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions_0d580fe0-ef81-4a7c-bc16-11325c719630" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_bb6020d3-3e36-40f9-aa36-f3ff87a12bde" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_41e1c7dd-f792-44ab-8ba9-ff35626a8756" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_bb6020d3-3e36-40f9-aa36-f3ff87a12bde" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_507446d6-16c9-4043-89a6-6ffacfddba6a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_41e1c7dd-f792-44ab-8ba9-ff35626a8756" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_507446d6-16c9-4043-89a6-6ffacfddba6a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_14d6e8a7-8613-4695-bb3d-aca87d80ad73" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_507446d6-16c9-4043-89a6-6ffacfddba6a" xlink:to="loc_dei_LegalEntityAxis_14d6e8a7-8613-4695-bb3d-aca87d80ad73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_14d6e8a7-8613-4695-bb3d-aca87d80ad73_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_14d6e8a7-8613-4695-bb3d-aca87d80ad73" xlink:to="loc_dei_EntityDomain_14d6e8a7-8613-4695-bb3d-aca87d80ad73_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6c548151-521c-46e2-beed-ef30f9681051" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_14d6e8a7-8613-4695-bb3d-aca87d80ad73" xlink:to="loc_dei_EntityDomain_6c548151-521c-46e2-beed-ef30f9681051" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cdedaef8-a45a-4fe1-aa25-eea343c64acb" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6c548151-521c-46e2-beed-ef30f9681051" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cdedaef8-a45a-4fe1-aa25-eea343c64acb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/IncomeTaxScheduleofIncomeTaxReconciliationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#IncomeTaxScheduleofIncomeTaxReconciliationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/IncomeTaxScheduleofIncomeTaxReconciliationDetails" xlink:type="extended" id="i929793bcd44044a0936292222e2eedb5_IncomeTaxScheduleofIncomeTaxReconciliationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_51cc8d5e-18b3-4c4b-8457-2ebc20d6bd12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FederalStatutoryIncomeTaxRateAbstract_fd256828-db1f-464f-a5d7-366670734e4d" xlink:href="ed-20221231.xsd#ed_FederalStatutoryIncomeTaxRateAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_51cc8d5e-18b3-4c4b-8457-2ebc20d6bd12" xlink:to="loc_ed_FederalStatutoryIncomeTaxRateAbstract_fd256828-db1f-464f-a5d7-366670734e4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_cc6420ce-2f81-4919-ade8-37c5a360159a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_FederalStatutoryIncomeTaxRateAbstract_fd256828-db1f-464f-a5d7-366670734e4d" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_cc6420ce-2f81-4919-ade8-37c5a360159a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_51cc8d5e-18b3-4c4b-8457-2ebc20d6bd12" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_2e99b176-7f49-496e-b771-ee5baa794ac3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_2e99b176-7f49-496e-b771-ee5baa794ac3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense_041bb4ff-2a6c-4ae9-a6b9-b14050bc76f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense_041bb4ff-2a6c-4ae9-a6b9-b14050bc76f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectiveIncomeTaxRateReconciliationCostOfRemovalPercent_ee01902b-1a9b-46ba-bac8-9e616e4cd542" xlink:href="ed-20221231.xsd#ed_EffectiveIncomeTaxRateReconciliationCostOfRemovalPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_ed_EffectiveIncomeTaxRateReconciliationCostOfRemovalPercent_ee01902b-1a9b-46ba-bac8-9e616e4cd542" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectiveIncomeTaxRateReconciliationOtherPlantRelatedItemsPercent_b96134fe-bfcf-4550-a5eb-53fef9aaf799" xlink:href="ed-20221231.xsd#ed_EffectiveIncomeTaxRateReconciliationOtherPlantRelatedItemsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_ed_EffectiveIncomeTaxRateReconciliationOtherPlantRelatedItemsPercent_b96134fe-bfcf-4550-a5eb-53fef9aaf799" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxesPercent_39426502-901c-4517-ad2e-10be5d5c509e" xlink:href="ed-20221231.xsd#ed_EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxesPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_ed_EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxesPercent_39426502-901c-4517-ad2e-10be5d5c509e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectiveIncomeTaxRateReconciliationTaxCreditRenewableEnergyCreditsPercent_4091ed94-8134-49de-94aa-c5f51ae706d0" xlink:href="ed-20221231.xsd#ed_EffectiveIncomeTaxRateReconciliationTaxCreditRenewableEnergyCreditsPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_ed_EffectiveIncomeTaxRateReconciliationTaxCreditRenewableEnergyCreditsPercent_4091ed94-8134-49de-94aa-c5f51ae706d0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_f42dfa4f-06f3-447d-a52f-8197ec238e2e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_f42dfa4f-06f3-447d-a52f-8197ec238e2e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EffectiveIncomeTaxRateReconciliationDeferredStateAndLocalIncomeTaxesReMeasurementPercent_6b8f1ef1-20f7-4b79-834a-001c647a36b9" xlink:href="ed-20221231.xsd#ed_EffectiveIncomeTaxRateReconciliationDeferredStateAndLocalIncomeTaxesReMeasurementPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_ed_EffectiveIncomeTaxRateReconciliationDeferredStateAndLocalIncomeTaxesReMeasurementPercent_6b8f1ef1-20f7-4b79-834a-001c647a36b9" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_c7729d1c-502a-4f8c-972b-3b3645398533" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_9c7700b0-b892-4883-8e8d-448424ae0c25" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_c7729d1c-502a-4f8c-972b-3b3645398533" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ec54e977-60f3-47bb-b0ed-c2651d98ffae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_51cc8d5e-18b3-4c4b-8457-2ebc20d6bd12" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ec54e977-60f3-47bb-b0ed-c2651d98ffae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_ed9c6cbe-91cd-4c0a-b47c-df5d089188ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_51cc8d5e-18b3-4c4b-8457-2ebc20d6bd12" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_ed9c6cbe-91cd-4c0a-b47c-df5d089188ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_71b831a4-3402-4fc6-a6e1-cc3b175bf5d9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_ed9c6cbe-91cd-4c0a-b47c-df5d089188ed" xlink:to="loc_dei_LegalEntityAxis_71b831a4-3402-4fc6-a6e1-cc3b175bf5d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_71b831a4-3402-4fc6-a6e1-cc3b175bf5d9_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_71b831a4-3402-4fc6-a6e1-cc3b175bf5d9" xlink:to="loc_dei_EntityDomain_71b831a4-3402-4fc6-a6e1-cc3b175bf5d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_301da80f-2e7a-479d-af96-3c1c72c1cc3c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_71b831a4-3402-4fc6-a6e1-cc3b175bf5d9" xlink:to="loc_dei_EntityDomain_301da80f-2e7a-479d-af96-3c1c72c1cc3c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_201d548a-b783-445d-ad1b-67627c068780" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_301da80f-2e7a-479d-af96-3c1c72c1cc3c" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_201d548a-b783-445d-ad1b-67627c068780" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/IncomeTaxAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#IncomeTaxAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/IncomeTaxAdditionalInformationDetails" xlink:type="extended" id="i59cbf93df29145758a5447ef69ef4179_IncomeTaxAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_504027c1-8bce-4593-93a0-38564f9a3c8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_504027c1-8bce-4593-93a0-38564f9a3c8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_134185ea-f2e8-4bdb-8941-1586a2272d1e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_134185ea-f2e8-4bdb-8941-1586a2272d1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_1d257bca-8cdd-4353-bb21-beb71a3ce87d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_1d257bca-8cdd-4353-bb21-beb71a3ce87d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9ced40c9-4118-4270-912a-a1e8d6c95da8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9ced40c9-4118-4270-912a-a1e8d6c95da8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxAssetsNetOperatingLossCarryforwardsStateAndLocalWriteOff_a43baa21-a88b-4bd6-83b5-647605c2c572" xlink:href="ed-20221231.xsd#ed_DeferredTaxAssetsNetOperatingLossCarryforwardsStateAndLocalWriteOff"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_ed_DeferredTaxAssetsNetOperatingLossCarryforwardsStateAndLocalWriteOff_a43baa21-a88b-4bd6-83b5-647605c2c572" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredStateAndLocalIncomeTaxExpenseBenefitNetOperatingLossCarryforwards_44bc281e-6a44-4797-a3b4-5156d9cc1d3b" xlink:href="ed-20221231.xsd#ed_DeferredStateAndLocalIncomeTaxExpenseBenefitNetOperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_ed_DeferredStateAndLocalIncomeTaxExpenseBenefitNetOperatingLossCarryforwards_44bc281e-6a44-4797-a3b4-5156d9cc1d3b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_6a544610-3f1f-457b-b253-600f555606d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxCreditCarryforwardAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_6a544610-3f1f-457b-b253-600f555606d1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_dc69e44b-ed26-430d-9e6d-11fa0de1e81f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_OperatingLossCarryforwards_dc69e44b-ed26-430d-9e6d-11fa0de1e81f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_f18f852b-b9a8-447d-be87-3e425bc7add8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_f18f852b-b9a8-447d-be87-3e425bc7add8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OperatingLossCarryforwardsValuationAllowanceReversed_9c0d9eb4-ee7e-413a-a488-46e286ee7f7a" xlink:href="ed-20221231.xsd#ed_OperatingLossCarryforwardsValuationAllowanceReversed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_ed_OperatingLossCarryforwardsValuationAllowanceReversed_9c0d9eb4-ee7e-413a-a488-46e286ee7f7a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ExpectedNetIncomeLossAttributableToParentMinimum_bb6c1439-a14c-4cb5-9718-7a74504ee6ed" xlink:href="ed-20221231.xsd#ed_ExpectedNetIncomeLossAttributableToParentMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_ed_ExpectedNetIncomeLossAttributableToParentMinimum_bb6c1439-a14c-4cb5-9718-7a74504ee6ed" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_53aaaca7-edbb-45ac-a9bc-79a1cabc7a9c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_53aaaca7-edbb-45ac-a9bc-79a1cabc7a9c" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_8fcba614-4b3c-4bd3-bf4d-92677934d397" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_8fcba614-4b3c-4bd3-bf4d-92677934d397" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxContingencies_cd7c7b59-7efd-4e8a-883a-0adc822f8e29" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationTaxContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxContingencies_cd7c7b59-7efd-4e8a-883a-0adc822f8e29" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1cf162a8-da9c-46ff-a066-19fd79827cef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1cf162a8-da9c-46ff-a066-19fd79827cef" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense_7a81ee69-495a-4d18-900e-3230c8170969" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense_7a81ee69-495a-4d18-900e-3230c8170969" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ExciseTaxesPaid_28eb2c7b-28ff-40ad-b181-bf5bc5c33d67" xlink:href="ed-20221231.xsd#ed_ExciseTaxesPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_ed_ExciseTaxesPaid_28eb2c7b-28ff-40ad-b181-bf5bc5c33d67" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_UncertainTaxPositionsReleased_c3e73272-9c3c-4533-9903-2948ab80d822" xlink:href="ed-20221231.xsd#ed_UncertainTaxPositionsReleased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_ed_UncertainTaxPositionsReleased_c3e73272-9c3c-4533-9903-2948ab80d822" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_dccbdb3c-9e94-41e1-8b7c-550c3bd899f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_5e512e8f-8e53-4a83-8aa8-1f508b4bcb7b" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_dccbdb3c-9e94-41e1-8b7c-550c3bd899f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f530cd5c-8e66-4bfb-ade7-f357f31a6b00" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_dccbdb3c-9e94-41e1-8b7c-550c3bd899f3" xlink:to="loc_dei_LegalEntityAxis_f530cd5c-8e66-4bfb-ade7-f357f31a6b00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f530cd5c-8e66-4bfb-ade7-f357f31a6b00_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f530cd5c-8e66-4bfb-ade7-f357f31a6b00" xlink:to="loc_dei_EntityDomain_f530cd5c-8e66-4bfb-ade7-f357f31a6b00_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_906b84a5-09fb-4826-a779-d91c0daacf77" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f530cd5c-8e66-4bfb-ade7-f357f31a6b00" xlink:to="loc_dei_EntityDomain_906b84a5-09fb-4826-a779-d91c0daacf77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_a4a78ad8-2882-4dd0-90bc-f2f977b89103" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_906b84a5-09fb-4826-a779-d91c0daacf77" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_a4a78ad8-2882-4dd0-90bc-f2f977b89103" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_00654dbe-c487-4e12-beee-0ee3ed1bf3bd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_dccbdb3c-9e94-41e1-8b7c-550c3bd899f3" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_00654dbe-c487-4e12-beee-0ee3ed1bf3bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_00654dbe-c487-4e12-beee-0ee3ed1bf3bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_00654dbe-c487-4e12-beee-0ee3ed1bf3bd" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_00654dbe-c487-4e12-beee-0ee3ed1bf3bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_0be15f94-cd93-4180-b51b-54dd955e29bb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_00654dbe-c487-4e12-beee-0ee3ed1bf3bd" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_0be15f94-cd93-4180-b51b-54dd955e29bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_35efcc0e-af94-4836-bf7c-17f36d371a31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_0be15f94-cd93-4180-b51b-54dd955e29bb" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_35efcc0e-af94-4836-bf7c-17f36d371a31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_073220d6-815e-4b9d-9f3a-c6355f9f1379" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_dccbdb3c-9e94-41e1-8b7c-550c3bd899f3" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_073220d6-815e-4b9d-9f3a-c6355f9f1379" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_073220d6-815e-4b9d-9f3a-c6355f9f1379_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_073220d6-815e-4b9d-9f3a-c6355f9f1379" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_073220d6-815e-4b9d-9f3a-c6355f9f1379_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_b8deb4de-7a02-4250-bf3d-a3ad19508a15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_073220d6-815e-4b9d-9f3a-c6355f9f1379" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_b8deb4de-7a02-4250-bf3d-a3ad19508a15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralBusinessMember_5d9880e2-ec6a-4908-ae08-8d344f6a7ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GeneralBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_b8deb4de-7a02-4250-bf3d-a3ad19508a15" xlink:to="loc_us-gaap_GeneralBusinessMember_5d9880e2-ec6a-4908-ae08-8d344f6a7ce5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameAxis_4364e5c4-bb80-4664-aa66-73e1e3fbdbe1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_dccbdb3c-9e94-41e1-8b7c-550c3bd899f3" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameAxis_4364e5c4-bb80-4664-aa66-73e1e3fbdbe1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_4364e5c4-bb80-4664-aa66-73e1e3fbdbe1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_4364e5c4-bb80-4664-aa66-73e1e3fbdbe1" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_4364e5c4-bb80-4664-aa66-73e1e3fbdbe1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_aea5b530-338a-467b-bfc8-e74643893bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_4364e5c4-bb80-4664-aa66-73e1e3fbdbe1" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_aea5b530-338a-467b-bfc8-e74643893bf8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewYorkStateDivisionOfTaxationAndFinanceMember_be35f20d-b029-49e9-b612-0d352b418287" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NewYorkStateDivisionOfTaxationAndFinanceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_aea5b530-338a-467b-bfc8-e74643893bf8" xlink:to="loc_us-gaap_NewYorkStateDivisionOfTaxationAndFinanceMember_be35f20d-b029-49e9-b612-0d352b418287" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkCityMember_3375ec33-b51a-41c6-a543-21e0c40a791d" xlink:href="ed-20221231.xsd#ed_NewYorkCityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_aea5b530-338a-467b-bfc8-e74643893bf8" xlink:to="loc_ed_NewYorkCityMember_3375ec33-b51a-41c6-a543-21e0c40a791d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MetropolitanTransportationAuthoritySubchargeMember_739a9506-acbb-4561-bd92-e2ab0d3365e6" xlink:href="ed-20221231.xsd#ed_MetropolitanTransportationAuthoritySubchargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_aea5b530-338a-467b-bfc8-e74643893bf8" xlink:to="loc_ed_MetropolitanTransportationAuthoritySubchargeMember_739a9506-acbb-4561-bd92-e2ab0d3365e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherStatesMember_3fe4064d-37e2-439f-b90a-47fad37a1be2" xlink:href="ed-20221231.xsd#ed_OtherStatesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_aea5b530-338a-467b-bfc8-e74643893bf8" xlink:to="loc_ed_OtherStatesMember_3fe4064d-37e2-439f-b90a-47fad37a1be2" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/IncomeTaxScheduleofDifferencesonDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#IncomeTaxScheduleofDifferencesonDeferredTaxAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/IncomeTaxScheduleofDifferencesonDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended" id="i5e2088f3b8b147df880f705f7c17a1d8_IncomeTaxScheduleofDifferencesonDeferredTaxAssetsandLiabilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_29af9ae7-830e-4bb3-873e-f9f462c3623a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_29af9ae7-830e-4bb3-873e-f9f462c3623a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryAssetsAbstract_c3fd5930-38d7-48e0-affe-e28175971bfd" xlink:href="ed-20221231.xsd#ed_RegulatoryAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_ed_RegulatoryAssetsAbstract_c3fd5930-38d7-48e0-affe-e28175971bfd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesStormCosts_b56d046c-5b5f-41d0-9171-fde7ffc52ab9" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesStormCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RegulatoryAssetsAbstract_c3fd5930-38d7-48e0-affe-e28175971bfd" xlink:to="loc_ed_DeferredTaxLiabilitiesStormCosts_b56d046c-5b5f-41d0-9171-fde7ffc52ab9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesEnvironmentalRedemptionCosts_079848d4-1afe-43e8-88de-e25f9723cb19" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesEnvironmentalRedemptionCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RegulatoryAssetsAbstract_c3fd5930-38d7-48e0-affe-e28175971bfd" xlink:to="loc_ed_DeferredTaxLiabilitiesEnvironmentalRedemptionCosts_079848d4-1afe-43e8-88de-e25f9723cb19" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesOtherRegulatoryAssets_639daf26-5c6c-4d92-8819-40044e6666ef" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesOtherRegulatoryAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RegulatoryAssetsAbstract_c3fd5930-38d7-48e0-affe-e28175971bfd" xlink:to="loc_ed_DeferredTaxLiabilitiesOtherRegulatoryAssets_639daf26-5c6c-4d92-8819-40044e6666ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesPensionAndOtherPostretirementCosts_ac885a6e-6711-442e-868d-353db30361dc" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesPensionAndOtherPostretirementCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RegulatoryAssetsAbstract_c3fd5930-38d7-48e0-affe-e28175971bfd" xlink:to="loc_ed_DeferredTaxLiabilitiesPensionAndOtherPostretirementCosts_ac885a6e-6711-442e-868d-353db30361dc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesPensionAndRetireeBenefitsAsset_9eb3ddc2-aa18-47e2-b9c4-65616558b067" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesPensionAndRetireeBenefitsAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_ed_DeferredTaxLiabilitiesPensionAndRetireeBenefitsAsset_9eb3ddc2-aa18-47e2-b9c4-65616558b067" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset_a8079fb4-9fe1-4cfb-9f7a-156747873307" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_ed_DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset_a8079fb4-9fe1-4cfb-9f7a-156747873307" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesEquityMethodInvestments_6419ef28-e071-4a49-8597-d8d07df2cc5d" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_ed_DeferredTaxLiabilitiesEquityMethodInvestments_6419ef28-e071-4a49-8597-d8d07df2cc5d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_6aa731bc-efab-4fde-a5b5-9c16a3cedc61" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_6aa731bc-efab-4fde-a5b5-9c16a3cedc61" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_e858e005-80f1-498b-9d5f-c5edbf1c6928" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesAbstract_84288396-36ba-4b2b-8f00-d693a2fc9886" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_e858e005-80f1-498b-9d5f-c5edbf1c6928" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsGrossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:to="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_609f04e9-dfb0-42dd-89d3-901217e7f2e5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_609f04e9-dfb0-42dd-89d3-901217e7f2e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesFutureIncomeTax_3314cf4c-bd27-45c6-a38c-a22aeeecfd67" xlink:href="ed-20221231.xsd#ed_DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesFutureIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_ed_DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesFutureIncomeTax_3314cf4c-bd27-45c6-a38c-a22aeeecfd67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesOther_50976195-61c8-42e1-b506-69eb7808128c" xlink:href="ed-20221231.xsd#ed_DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_ed_DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesOther_50976195-61c8-42e1-b506-69eb7808128c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_2167a11b-d684-4080-9d8f-fc56f612c228" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_2167a11b-d684-4080-9d8f-fc56f612c228" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_f2b8539d-e4a5-45b1-8302-ba4505074a66" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_f2b8539d-e4a5-45b1-8302-ba4505074a66" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_c3b42fae-3039-4f9e-bc2c-6963b00a9c25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_c3b42fae-3039-4f9e-bc2c-6963b00a9c25" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxAssetsSuperfundAndEnvironmentalCosts_39c037a9-8634-4b1e-a8a8-e3488784ec2c" xlink:href="ed-20221231.xsd#ed_DeferredTaxAssetsSuperfundAndEnvironmentalCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_ed_DeferredTaxAssetsSuperfundAndEnvironmentalCosts_39c037a9-8634-4b1e-a8a8-e3488784ec2c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesOperatingLeaseLiabilities_b10dbf47-3177-4356-aaa0-62eb1cc83a53" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesOperatingLeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_ed_DeferredTaxLiabilitiesOperatingLeaseLiabilities_b10dbf47-3177-4356-aaa0-62eb1cc83a53" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxAssetsPensionAndOtherPostretirementBenefits_a67eaa5a-a397-4c8f-9b69-85fed9654625" xlink:href="ed-20221231.xsd#ed_DeferredTaxAssetsPensionAndOtherPostretirementBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_ed_DeferredTaxAssetsPensionAndOtherPostretirementBenefits_a67eaa5a-a397-4c8f-9b69-85fed9654625" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxAssetsAssetRetirementObligations_1705dc40-551e-46fe-87da-6913f3221eeb" xlink:href="ed-20221231.xsd#ed_DeferredTaxAssetsAssetRetirementObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_ed_DeferredTaxAssetsAssetRetirementObligations_1705dc40-551e-46fe-87da-6913f3221eeb" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsEquityMethodInvestments_58a2aba2-d7f3-4ca5-a073-6819f931118b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsEquityMethodInvestments_58a2aba2-d7f3-4ca5-a073-6819f931118b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_48f89722-f9fa-4bc2-9601-8a5197e47635" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_48f89722-f9fa-4bc2-9601-8a5197e47635" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_ab914e01-44ce-4726-98c5-5254d2b84efe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsGrossAbstract_249891cf-338a-44d0-bfae-888e20d8bbfd" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_ab914e01-44ce-4726-98c5-5254d2b84efe" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredTaxLiabilitiesExcludingInvestmentinNoncontrolledAffiliatesNet_38b04991-f6d7-45b2-b262-103a82103fd3" xlink:href="ed-20221231.xsd#ed_DeferredTaxLiabilitiesExcludingInvestmentinNoncontrolledAffiliatesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:to="loc_ed_DeferredTaxLiabilitiesExcludingInvestmentinNoncontrolledAffiliatesNet_38b04991-f6d7-45b2-b262-103a82103fd3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates_f33b70f4-3574-4479-a5bf-c271fa9941b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates_f33b70f4-3574-4479-a5bf-c271fa9941b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_a8afa5bb-88d3-437f-9c48-b1a5ef43b9b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:to="loc_us-gaap_DeferredTaxLiabilities_a8afa5bb-88d3-437f-9c48-b1a5ef43b9b5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_b3e79ad2-6568-4fe1-8829-6ffb7ab83377" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_9d2e2bab-c730-46ca-b930-ae7633596771" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_b3e79ad2-6568-4fe1-8829-6ffb7ab83377" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_91142c0f-9275-4a04-a1d1-1e81e3f92173" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_b3e79ad2-6568-4fe1-8829-6ffb7ab83377" xlink:to="loc_dei_LegalEntityAxis_91142c0f-9275-4a04-a1d1-1e81e3f92173" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_91142c0f-9275-4a04-a1d1-1e81e3f92173_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_91142c0f-9275-4a04-a1d1-1e81e3f92173" xlink:to="loc_dei_EntityDomain_91142c0f-9275-4a04-a1d1-1e81e3f92173_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_481f8877-5a9c-45a6-a2d6-43234d373c6a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_91142c0f-9275-4a04-a1d1-1e81e3f92173" xlink:to="loc_dei_EntityDomain_481f8877-5a9c-45a6-a2d6-43234d373c6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_850c69d9-5511-4d37-9471-0be054ffe4b0" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_481f8877-5a9c-45a6-a2d6-43234d373c6a" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_850c69d9-5511-4d37-9471-0be054ffe4b0" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/IncomeTaxSummaryofUnrecognizedTaxBenefitsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#IncomeTaxSummaryofUnrecognizedTaxBenefitsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/IncomeTaxSummaryofUnrecognizedTaxBenefitsDetails" xlink:type="extended" id="ib66baedbb38b4842adaf69af26e392d9_IncomeTaxSummaryofUnrecognizedTaxBenefitsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_7cd36052-0916-44bb-a41b-fe8337449cd2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_7cd36052-0916-44bb-a41b-fe8337449cd2" xlink:to="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_2e060cda-31ad-44ce-82aa-dbd6835314e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_2e060cda-31ad-44ce-82aa-dbd6835314e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_117027f3-6a85-4ab6-a877-3b66f182e148" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_117027f3-6a85-4ab6-a877-3b66f182e148" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_c0bc2fbb-d8e2-4ad9-8a22-e46fb4f4fdf1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_c0bc2fbb-d8e2-4ad9-8a22-e46fb4f4fdf1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_4707507b-cc1c-4952-8a08-35d265f40d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_4707507b-cc1c-4952-8a08-35d265f40d5f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_828eda72-7fb8-4d5d-949e-9a273742c806" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_2d31d8ce-bd34-426d-b906-20284df8456f" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_828eda72-7fb8-4d5d-949e-9a273742c806" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_8e3b8376-c5c6-4866-89a1-1704d0bafcaf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_6e02442c-1c04-4451-a191-1a950f10adb1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_7cd36052-0916-44bb-a41b-fe8337449cd2" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_6e02442c-1c04-4451-a191-1a950f10adb1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1516fba2-ac9a-40ed-8f05-f0f6ece94929" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_6e02442c-1c04-4451-a191-1a950f10adb1" xlink:to="loc_dei_LegalEntityAxis_1516fba2-ac9a-40ed-8f05-f0f6ece94929" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1516fba2-ac9a-40ed-8f05-f0f6ece94929_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1516fba2-ac9a-40ed-8f05-f0f6ece94929" xlink:to="loc_dei_EntityDomain_1516fba2-ac9a-40ed-8f05-f0f6ece94929_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1ce9fdec-d10d-4a60-bdbd-8468719192b3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1516fba2-ac9a-40ed-8f05-f0f6ece94929" xlink:to="loc_dei_EntityDomain_1ce9fdec-d10d-4a60-bdbd-8468719192b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_8ae985f8-51ad-4431-ae13-638a135edd3d" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1ce9fdec-d10d-4a60-bdbd-8468719192b3" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_8ae985f8-51ad-4431-ae13-638a135edd3d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RevenueRecognitionDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="extended" id="idec93d40bfe34b969af55a650f295679_RevenueRecognitionDisaggregationofRevenueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_a3971877-b703-4dc3-baf9-bcae851ab50a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2b9f43b8-d6c4-4a74-aa0b-c8e63e3e2d35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_a3971877-b703-4dc3-baf9-bcae851ab50a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2b9f43b8-d6c4-4a74-aa0b-c8e63e3e2d35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_47d863a6-919f-49c7-bdae-ecc968a80812" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_a3971877-b703-4dc3-baf9-bcae851ab50a" xlink:to="loc_us-gaap_Revenues_47d863a6-919f-49c7-bdae-ecc968a80812" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_a3971877-b703-4dc3-baf9-bcae851ab50a" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_43ba14a8-baeb-4d60-ae17-db5f53f38cc9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:to="loc_srt_ConsolidationItemsAxis_43ba14a8-baeb-4d60-ae17-db5f53f38cc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_43ba14a8-baeb-4d60-ae17-db5f53f38cc9_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_43ba14a8-baeb-4d60-ae17-db5f53f38cc9" xlink:to="loc_srt_ConsolidationItemsDomain_43ba14a8-baeb-4d60-ae17-db5f53f38cc9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_6274374a-b154-4b29-a08d-4905bc2269bb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_43ba14a8-baeb-4d60-ae17-db5f53f38cc9" xlink:to="loc_srt_ConsolidationItemsDomain_6274374a-b154-4b29-a08d-4905bc2269bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_95ac9998-64da-40d6-8073-a95e4a4d5869" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6274374a-b154-4b29-a08d-4905bc2269bb" xlink:to="loc_us-gaap_OperatingSegmentsMember_95ac9998-64da-40d6-8073-a95e4a4d5869" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CorporateAndReconcilingItemsMember_956e485f-50b4-4e17-aae9-c9c274160db5" xlink:href="ed-20221231.xsd#ed_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6274374a-b154-4b29-a08d-4905bc2269bb" xlink:to="loc_ed_CorporateAndReconcilingItemsMember_956e485f-50b4-4e17-aae9-c9c274160db5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_6b1e06c9-5f8b-40f1-88b7-eb355674f768" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:to="loc_dei_LegalEntityAxis_6b1e06c9-5f8b-40f1-88b7-eb355674f768" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6b1e06c9-5f8b-40f1-88b7-eb355674f768_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6b1e06c9-5f8b-40f1-88b7-eb355674f768" xlink:to="loc_dei_EntityDomain_6b1e06c9-5f8b-40f1-88b7-eb355674f768_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fa7dce24-18f4-4961-a7bb-70331095a3d4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6b1e06c9-5f8b-40f1-88b7-eb355674f768" xlink:to="loc_dei_EntityDomain_fa7dce24-18f4-4961-a7bb-70331095a3d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_32ba23d2-33ef-4a79-ba6f-59f99cb6b49d" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fa7dce24-18f4-4961-a7bb-70331095a3d4" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_32ba23d2-33ef-4a79-ba6f-59f99cb6b49d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_34c799f7-26f9-404e-91d0-16873db3070e" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fa7dce24-18f4-4961-a7bb-70331095a3d4" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_34c799f7-26f9-404e-91d0-16873db3070e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f2d1df91-91e0-4217-9e08-6c705b257df6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f2d1df91-91e0-4217-9e08-6c705b257df6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f2d1df91-91e0-4217-9e08-6c705b257df6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f2d1df91-91e0-4217-9e08-6c705b257df6" xlink:to="loc_us-gaap_SegmentDomain_f2d1df91-91e0-4217-9e08-6c705b257df6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a1214a76-9aa8-4fe1-aa3a-cccc595753e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f2d1df91-91e0-4217-9e08-6c705b257df6" xlink:to="loc_us-gaap_SegmentDomain_a1214a76-9aa8-4fe1-aa3a-cccc595753e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_c2049473-4903-46c4-bbee-dcfe8fd158f2" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a1214a76-9aa8-4fe1-aa3a-cccc595753e9" xlink:to="loc_ed_CleanEnergyBusinessesMember_c2049473-4903-46c4-bbee-dcfe8fd158f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_a2d4f1ce-62f0-4e07-97d4-cd511b58a972" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a1214a76-9aa8-4fe1-aa3a-cccc595753e9" xlink:to="loc_ed_ConEdisonTransmissionMember_a2d4f1ce-62f0-4e07-97d4-cd511b58a972" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_d19e0b72-66ce-4976-80e1-781290912a35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:to="loc_us-gaap_PublicUtilityAxis_d19e0b72-66ce-4976-80e1-781290912a35" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_d19e0b72-66ce-4976-80e1-781290912a35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_d19e0b72-66ce-4976-80e1-781290912a35" xlink:to="loc_us-gaap_UtilityPlantDomain_d19e0b72-66ce-4976-80e1-781290912a35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_d19e0b72-66ce-4976-80e1-781290912a35" xlink:to="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_d8141a9c-4e24-4bba-8a58-60119b15e582" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_us-gaap_ElectricTransmissionMember_d8141a9c-4e24-4bba-8a58-60119b15e582" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_496d4f9c-9784-48b0-82ce-dd0a9882bf33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_us-gaap_GasTransmissionMember_496d4f9c-9784-48b0-82ce-dd0a9882bf33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_2864a484-ccd7-442f-9fde-322772474454" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_us-gaap_SteamPlantMember_2864a484-ccd7-442f-9fde-322772474454" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RenewablesMember_8576a770-c6c9-45e6-90a5-3a8b0afb6f87" xlink:href="ed-20221231.xsd#ed_RenewablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_ed_RenewablesMember_8576a770-c6c9-45e6-90a5-3a8b0afb6f87" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnergyServiceMember_e99572fd-f17c-4df8-8f20-ba10ac447098" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EnergyServiceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_us-gaap_EnergyServiceMember_e99572fd-f17c-4df8-8f20-ba10ac447098" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DevelopTransferProjectMember_8fd3d4da-4f67-41c3-bb26-7f36a2e2d0c2" xlink:href="ed-20221231.xsd#ed_DevelopTransferProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_ed_DevelopTransferProjectMember_8fd3d4da-4f67-41c3-bb26-7f36a2e2d0c2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherServicesMember_52da356b-8ccc-4ccf-84b2-fc3b1cd841d1" xlink:href="ed-20221231.xsd#ed_OtherServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_5eff3009-db17-4400-b177-a51a1a97bc80" xlink:to="loc_ed_OtherServicesMember_52da356b-8ccc-4ccf-84b2-fc3b1cd841d1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_b0fa7e6c-cd7f-4372-81f7-25b92d0c8b5e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:to="loc_srt_ProductOrServiceAxis_b0fa7e6c-cd7f-4372-81f7-25b92d0c8b5e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b0fa7e6c-cd7f-4372-81f7-25b92d0c8b5e_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_b0fa7e6c-cd7f-4372-81f7-25b92d0c8b5e" xlink:to="loc_srt_ProductsAndServicesDomain_b0fa7e6c-cd7f-4372-81f7-25b92d0c8b5e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8223df4f-bed2-44ef-8a9b-daa9830662fc" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_b0fa7e6c-cd7f-4372-81f7-25b92d0c8b5e" xlink:to="loc_srt_ProductsAndServicesDomain_8223df4f-bed2-44ef-8a9b-daa9830662fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_e7a0445d-d751-48bd-8483-8fef519b16ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProductAndServiceOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_8223df4f-bed2-44ef-8a9b-daa9830662fc" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_e7a0445d-d751-48bd-8483-8fef519b16ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueProgramAxis_f15d86ad-adbd-47e4-9879-bea46ca0790c" xlink:href="ed-20221231.xsd#ed_RevenueProgramAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_9fd6033d-2a75-42a7-bd5a-a184f4d39fdd" xlink:to="loc_ed_RevenueProgramAxis_f15d86ad-adbd-47e4-9879-bea46ca0790c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueProgramDomain_f15d86ad-adbd-47e4-9879-bea46ca0790c_default" xlink:href="ed-20221231.xsd#ed_RevenueProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ed_RevenueProgramAxis_f15d86ad-adbd-47e4-9879-bea46ca0790c" xlink:to="loc_ed_RevenueProgramDomain_f15d86ad-adbd-47e4-9879-bea46ca0790c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RevenueProgramDomain_aebbe81e-77d8-4b10-be83-65ff844f2abe" xlink:href="ed-20221231.xsd#ed_RevenueProgramDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ed_RevenueProgramAxis_f15d86ad-adbd-47e4-9879-bea46ca0790c" xlink:to="loc_ed_RevenueProgramDomain_aebbe81e-77d8-4b10-be83-65ff844f2abe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DecouplingMechanismsMember_5c058cc0-7c84-409a-a241-922fd1e1add9" xlink:href="ed-20221231.xsd#ed_DecouplingMechanismsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RevenueProgramDomain_aebbe81e-77d8-4b10-be83-65ff844f2abe" xlink:to="loc_ed_DecouplingMechanismsMember_5c058cc0-7c84-409a-a241-922fd1e1add9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EarningsAdjustmentMechanismsMember_2041d0bb-9e9a-4829-a096-a676e602dca2" xlink:href="ed-20221231.xsd#ed_EarningsAdjustmentMechanismsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RevenueProgramDomain_aebbe81e-77d8-4b10-be83-65ff844f2abe" xlink:to="loc_ed_EarningsAdjustmentMechanismsMember_2041d0bb-9e9a-4829-a096-a676e602dca2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LatePaymentChargesMember_b4481f29-3f39-4275-a212-56320ead2564" xlink:href="ed-20221231.xsd#ed_LatePaymentChargesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_RevenueProgramDomain_aebbe81e-77d8-4b10-be83-65ff844f2abe" xlink:to="loc_ed_LatePaymentChargesMember_b4481f29-3f39-4275-a212-56320ead2564" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails" xlink:type="extended" id="i106e7d0f86b246ebb39942ec00b5a578_RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_5bc34a1d-f01b-4a4c-befe-5554bdfa76e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_5bc34a1d-f01b-4a4c-befe-5554bdfa76e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_989cf23d-dc70-492c-9a38-dd56c8b8c3b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_989cf23d-dc70-492c-9a38-dd56c8b8c3b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7bd70e9c-6655-416b-93c9-503860c0c0c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7bd70e9c-6655-416b-93c9-503860c0c0c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_d7d961a3-abac-4bd4-a88e-c1271509ab44" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7bd70e9c-6655-416b-93c9-503860c0c0c0" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_d7d961a3-abac-4bd4-a88e-c1271509ab44" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails_1" xlink:type="simple" xlink:href="ed-20221231.xsd#RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails_1"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails_1" xlink:type="extended" id="i89d955e3885446519abc16080aaf8af8_RevenueRecognitionRevenueRecognitionRemainingPerformanceObligationDetails_1">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_5bc34a1d-f01b-4a4c-befe-5554bdfa76e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_5bc34a1d-f01b-4a4c-befe-5554bdfa76e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_989cf23d-dc70-492c-9a38-dd56c8b8c3b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_989cf23d-dc70-492c-9a38-dd56c8b8c3b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7bd70e9c-6655-416b-93c9-503860c0c0c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7357cbe7-aad2-4a31-8aaa-9c361472fa6b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_7bd70e9c-6655-416b-93c9-503860c0c0c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RevenueRecognitionAdditionalinformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RevenueRecognitionAdditionalinformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RevenueRecognitionAdditionalinformationDetails" xlink:type="extended" id="iaaf08ad947fc43bfbe9aa3f52f06ad6e_RevenueRecognitionAdditionalinformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_92b85e70-6b03-4ac8-ad3b-5585d405dcf1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_92b85e70-6b03-4ac8-ad3b-5585d405dcf1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_beb7fb01-966e-4d6b-9b7f-84fd54000e84" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_beb7fb01-966e-4d6b-9b7f-84fd54000e84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilityRatePlanTerm_3668c9fe-d31a-45ab-a260-22814df60633" xlink:href="ed-20221231.xsd#ed_PublicUtilityRatePlanTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_ed_PublicUtilityRatePlanTerm_3668c9fe-d31a-45ab-a260-22814df60633" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f0a77093-3621-407f-bb3d-1194dae0a9e4_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:to="loc_dei_EntityDomain_f0a77093-3621-407f-bb3d-1194dae0a9e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:to="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_553d7af7-b293-4d1b-a80f-181afb21b9fe" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_553d7af7-b293-4d1b-a80f-181afb21b9fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_bc37692e-07ab-4e6b-a086-a9d10ace8576" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_bc37692e-07ab-4e6b-a086-a9d10ace8576" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_a5c2835f-4cf3-4ece-aedd-3943e07775af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:to="loc_us-gaap_UtilityPlantDomain_a5c2835f-4cf3-4ece-aedd-3943e07775af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:to="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_251965e2-4273-408c-901c-f2a5f7d2e36a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:to="loc_us-gaap_ElectricTransmissionMember_251965e2-4273-408c-901c-f2a5f7d2e36a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_6a016f02-8095-4373-bea4-0c53457bb93c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:to="loc_us-gaap_GasTransmissionMember_6a016f02-8095-4373-bea4-0c53457bb93c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricAndGasTransmissionProjectsMember_e2a79469-4af9-4da2-b64a-f0f2035311c9" xlink:href="ed-20221231.xsd#ed_ElectricAndGasTransmissionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:to="loc_ed_ElectricAndGasTransmissionProjectsMember_e2a79469-4af9-4da2-b64a-f0f2035311c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_c6896449-1d89-491a-8519-a4db624a234f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_c6896449-1d89-491a-8519-a4db624a234f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_90aab05a-d8f0-4b92-bf62-ca8bd85d037d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_90aab05a-d8f0-4b92-bf62-ca8bd85d037d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_f7b7e784-92dd-41a0-b76f-250bbd1a9eb5" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_90aab05a-d8f0-4b92-bf62-ca8bd85d037d" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_f7b7e784-92dd-41a0-b76f-250bbd1a9eb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_f1ae1d45-3582-4793-992e-aa079bda9bdb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_f1ae1d45-3582-4793-992e-aa079bda9bdb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_0af43495-04dc-4f9d-bde4-afa9b7c314da_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:to="loc_srt_ConsolidatedEntitiesDomain_0af43495-04dc-4f9d-bde4-afa9b7c314da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_22788839-25ae-4c4a-ba08-847416fc483a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:to="loc_srt_ConsolidatedEntitiesDomain_22788839-25ae-4c4a-ba08-847416fc483a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_f48d5fc3-7cdb-46d0-b3d6-3bbcf23062ac" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_22788839-25ae-4c4a-ba08-847416fc483a" xlink:to="loc_srt_SubsidiariesMember_f48d5fc3-7cdb-46d0-b3d6-3bbcf23062ac" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RevenueRecognitionAdditionalinformationDetails_1" xlink:type="simple" xlink:href="ed-20221231.xsd#RevenueRecognitionAdditionalinformationDetails_1"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RevenueRecognitionAdditionalinformationDetails_1" xlink:type="extended" id="iadbb21410bf14eba91ee5351a361194c_RevenueRecognitionAdditionalinformationDetails_1">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_92b85e70-6b03-4ac8-ad3b-5585d405dcf1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_92b85e70-6b03-4ac8-ad3b-5585d405dcf1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_beb7fb01-966e-4d6b-9b7f-84fd54000e84" xlink:href="ed-20221231.xsd#ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_ed_PublicUtilitiesPropertyPlantAndEquipmentBaseRateAmountOfCostRecovery_beb7fb01-966e-4d6b-9b7f-84fd54000e84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PublicUtilityRatePlanTerm_3668c9fe-d31a-45ab-a260-22814df60633" xlink:href="ed-20221231.xsd#ed_PublicUtilityRatePlanTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_ed_PublicUtilityRatePlanTerm_3668c9fe-d31a-45ab-a260-22814df60633" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_90fd266a-ac2b-4c2d-8a92-73d9a411e5db" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f0a77093-3621-407f-bb3d-1194dae0a9e4_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:to="loc_dei_EntityDomain_f0a77093-3621-407f-bb3d-1194dae0a9e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f0a77093-3621-407f-bb3d-1194dae0a9e4" xlink:to="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_553d7af7-b293-4d1b-a80f-181afb21b9fe" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_553d7af7-b293-4d1b-a80f-181afb21b9fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_bc37692e-07ab-4e6b-a086-a9d10ace8576" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ce4a9ac6-5e10-4181-ad64-ca9a279fd82e" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_bc37692e-07ab-4e6b-a086-a9d10ace8576" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_a5c2835f-4cf3-4ece-aedd-3943e07775af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:to="loc_us-gaap_UtilityPlantDomain_a5c2835f-4cf3-4ece-aedd-3943e07775af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_a5c2835f-4cf3-4ece-aedd-3943e07775af" xlink:to="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_251965e2-4273-408c-901c-f2a5f7d2e36a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:to="loc_us-gaap_ElectricTransmissionMember_251965e2-4273-408c-901c-f2a5f7d2e36a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_6a016f02-8095-4373-bea4-0c53457bb93c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:to="loc_us-gaap_GasTransmissionMember_6a016f02-8095-4373-bea4-0c53457bb93c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricAndGasTransmissionProjectsMember_e2a79469-4af9-4da2-b64a-f0f2035311c9" xlink:href="ed-20221231.xsd#ed_ElectricAndGasTransmissionProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_c7161eb1-60b1-4712-8ecd-a99056225764" xlink:to="loc_ed_ElectricAndGasTransmissionProjectsMember_e2a79469-4af9-4da2-b64a-f0f2035311c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_c6896449-1d89-491a-8519-a4db624a234f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_c6896449-1d89-491a-8519-a4db624a234f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryAgencyDomain_90aab05a-d8f0-4b92-bf62-ca8bd85d037d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryAgencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RegulatoryAgencyAxis_c6896449-1d89-491a-8519-a4db624a234f" xlink:to="loc_us-gaap_RegulatoryAgencyDomain_90aab05a-d8f0-4b92-bf62-ca8bd85d037d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NewYorkStatePublicServiceCommissionMember_f7b7e784-92dd-41a0-b76f-250bbd1a9eb5" xlink:href="ed-20221231.xsd#ed_NewYorkStatePublicServiceCommissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryAgencyDomain_90aab05a-d8f0-4b92-bf62-ca8bd85d037d" xlink:to="loc_ed_NewYorkStatePublicServiceCommissionMember_f7b7e784-92dd-41a0-b76f-250bbd1a9eb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_5f1f402b-213a-4f01-87f6-bc3e1af36cac" xlink:to="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_0af43495-04dc-4f9d-bde4-afa9b7c314da_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:to="loc_srt_ConsolidatedEntitiesDomain_0af43495-04dc-4f9d-bde4-afa9b7c314da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_22788839-25ae-4c4a-ba08-847416fc483a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_0af43495-04dc-4f9d-bde4-afa9b7c314da" xlink:to="loc_srt_ConsolidatedEntitiesDomain_22788839-25ae-4c4a-ba08-847416fc483a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_f48d5fc3-7cdb-46d0-b3d6-3bbcf23062ac" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_22788839-25ae-4c4a-ba08-847416fc483a" xlink:to="loc_srt_SubsidiariesMember_f48d5fc3-7cdb-46d0-b3d6-3bbcf23062ac" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CurrentExpectedCreditLossesAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CurrentExpectedCreditLossesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CurrentExpectedCreditLossesAdditionalInformationDetails" xlink:type="extended" id="ie57554c0cb6743e196c2c91e85ed400a_CurrentExpectedCreditLossesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e6677bc3-8b04-4f76-a09d-36f8c8535480" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease_f830fba9-73c6-4c8e-97f6-5f294370467b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e6677bc3-8b04-4f76-a09d-36f8c8535480" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease_f830fba9-73c6-4c8e-97f6-5f294370467b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_51e12f49-69d8-46c7-b2a1-497678b4ddca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_e6677bc3-8b04-4f76-a09d-36f8c8535480" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_51e12f49-69d8-46c7-b2a1-497678b4ddca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9f08270e-bcfb-423b-9301-fcca6e6f353d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_51e12f49-69d8-46c7-b2a1-497678b4ddca" xlink:to="loc_dei_LegalEntityAxis_9f08270e-bcfb-423b-9301-fcca6e6f353d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9f08270e-bcfb-423b-9301-fcca6e6f353d_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9f08270e-bcfb-423b-9301-fcca6e6f353d" xlink:to="loc_dei_EntityDomain_9f08270e-bcfb-423b-9301-fcca6e6f353d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c24d6468-a313-4e89-bdea-c15e3ff21ed1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9f08270e-bcfb-423b-9301-fcca6e6f353d" xlink:to="loc_dei_EntityDomain_c24d6468-a313-4e89-bdea-c15e3ff21ed1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_0c9d075f-636d-4f63-8d1b-00ac959bc122" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c24d6468-a313-4e89-bdea-c15e3ff21ed1" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_0c9d075f-636d-4f63-8d1b-00ac959bc122" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/CurrentExpectedCreditLossesScheduleofMajorPortfolioSegmentTypeDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#CurrentExpectedCreditLossesScheduleofMajorPortfolioSegmentTypeDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/CurrentExpectedCreditLossesScheduleofMajorPortfolioSegmentTypeDetails" xlink:type="extended" id="i9143645058304830aebaaa1d64ef9fa6_CurrentExpectedCreditLossesScheduleofMajorPortfolioSegmentTypeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_bea46a4e-beab-4602-b395-a195ffed36c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_94b13f5c-7928-4746-9b17-4f05de8d28e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_bea46a4e-beab-4602-b395-a195ffed36c0" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_94b13f5c-7928-4746-9b17-4f05de8d28e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_e83e666d-15cc-4f3d-b8d2-a41564c1af42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_94b13f5c-7928-4746-9b17-4f05de8d28e9" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_e83e666d-15cc-4f3d-b8d2-a41564c1af42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries_3946e618-eb5f-4fe1-b02b-81f1644fc979" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_94b13f5c-7928-4746-9b17-4f05de8d28e9" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries_3946e618-eb5f-4fe1-b02b-81f1644fc979" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_b34b8073-a77c-47d0-9267-d6d61c554999" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_94b13f5c-7928-4746-9b17-4f05de8d28e9" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_b34b8073-a77c-47d0-9267-d6d61c554999" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_1df2893f-dc2a-45f5-a4be-39373e9cb654" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_94b13f5c-7928-4746-9b17-4f05de8d28e9" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_1df2893f-dc2a-45f5-a4be-39373e9cb654" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_5d01d2b5-d7b2-4534-a3e6-0c036dd234dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_f0f5dc52-56e6-41f9-85f3-38f5c612645d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_bea46a4e-beab-4602-b395-a195ffed36c0" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_f0f5dc52-56e6-41f9-85f3-38f5c612645d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7afd478e-00c2-4e26-83e8-1cdad185b175" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_f0f5dc52-56e6-41f9-85f3-38f5c612645d" xlink:to="loc_dei_LegalEntityAxis_7afd478e-00c2-4e26-83e8-1cdad185b175" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7afd478e-00c2-4e26-83e8-1cdad185b175_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7afd478e-00c2-4e26-83e8-1cdad185b175" xlink:to="loc_dei_EntityDomain_7afd478e-00c2-4e26-83e8-1cdad185b175_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_998c50c1-6d57-4cc3-bb58-3529938bd1f3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7afd478e-00c2-4e26-83e8-1cdad185b175" xlink:to="loc_dei_EntityDomain_998c50c1-6d57-4cc3-bb58-3529938bd1f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_4b55d30c-86b7-4d09-a879-7879270907dc" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_998c50c1-6d57-4cc3-bb58-3529938bd1f3" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_4b55d30c-86b7-4d09-a879-7879270907dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_27a6fd1f-7a25-4d70-a482-738889afffd1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_f0f5dc52-56e6-41f9-85f3-38f5c612645d" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_27a6fd1f-7a25-4d70-a482-738889afffd1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_27a6fd1f-7a25-4d70-a482-738889afffd1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_27a6fd1f-7a25-4d70-a482-738889afffd1" xlink:to="loc_us-gaap_ReceivableTypeDomain_27a6fd1f-7a25-4d70-a482-738889afffd1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_b64092d8-2ffc-421b-b52a-e1317b5b9882" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_27a6fd1f-7a25-4d70-a482-738889afffd1" xlink:to="loc_us-gaap_ReceivableTypeDomain_b64092d8-2ffc-421b-b52a-e1317b5b9882" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_218ce25e-3585-4d46-b1e8-8c59e9b07d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_b64092d8-2ffc-421b-b52a-e1317b5b9882" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_218ce25e-3585-4d46-b1e8-8c59e9b07d0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherReceivablesMember_505980d0-6108-40be-9835-aafa40e7c4db" xlink:href="ed-20221231.xsd#ed_OtherReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_b64092d8-2ffc-421b-b52a-e1317b5b9882" xlink:to="loc_ed_OtherReceivablesMember_505980d0-6108-40be-9835-aafa40e7c4db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_95b0cb45-71f1-4474-8dda-d36cb67fac92" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_f0f5dc52-56e6-41f9-85f3-38f5c612645d" xlink:to="loc_srt_ConsolidatedEntitiesAxis_95b0cb45-71f1-4474-8dda-d36cb67fac92" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_95b0cb45-71f1-4474-8dda-d36cb67fac92_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_95b0cb45-71f1-4474-8dda-d36cb67fac92" xlink:to="loc_srt_ConsolidatedEntitiesDomain_95b0cb45-71f1-4474-8dda-d36cb67fac92_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_bf27c1eb-5948-4b9a-8b38-241db47d4f16" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_95b0cb45-71f1-4474-8dda-d36cb67fac92" xlink:to="loc_srt_ConsolidatedEntitiesDomain_bf27c1eb-5948-4b9a-8b38-241db47d4f16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_9b213b60-f2a3-4c9a-8bad-64385f870f3b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_bf27c1eb-5948-4b9a-8b38-241db47d4f16" xlink:to="loc_srt_SubsidiariesMember_9b213b60-f2a3-4c9a-8bad-64385f870f3b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/StockBasedCompensationAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#StockBasedCompensationAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/StockBasedCompensationAdditionalInformationDetails" xlink:type="extended" id="i7532de9be43d4ee7b8a59cf4c64508ca_StockBasedCompensationAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_2e9fd285-1565-4881-883a-f1a105188bf1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_2e9fd285-1565-4881-883a-f1a105188bf1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSAdjustmentPercentage_b31671dd-5738-4e46-b569-37a3afe631fd" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSAdjustmentPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSAdjustmentPercentage_b31671dd-5738-4e46-b569-37a3afe631fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSFactorUsedLowRange_6e95a02b-dfc1-4356-bcbe-16bfaf28972d" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSFactorUsedLowRange"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSFactorUsedLowRange_6e95a02b-dfc1-4356-bcbe-16bfaf28972d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSFactorUsedHighRange_240a73b5-c092-420d-b4cb-d568a540eabc" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSFactorUsedHighRange"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceRsuSFactorUsedHighRange_240a73b5-c092-420d-b4cb-d568a540eabc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsShares_2b6cec45-48f2-4942-a3ca-1efcdb305776" xlink:href="ed-20221231.xsd#ed_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsShares_2b6cec45-48f2-4942-a3ca-1efcdb305776" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_a99e084e-7326-4b71-b3b0-8a5cc891b3d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_a99e084e-7326-4b71-b3b0-8a5cc891b3d1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_a5eb428e-023d-43a4-aa09-37e896a19cd8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_a5eb428e-023d-43a4-aa09-37e896a19cd8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PaymentForSettlementOfVestedUnits_a4ed61a8-8706-44aa-9a55-7b617df6dea6" xlink:href="ed-20221231.xsd#ed_PaymentForSettlementOfVestedUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_PaymentForSettlementOfVestedUnits_a4ed61a8-8706-44aa-9a55-7b617df6dea6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_5500b2af-5240-45e1-881e-c4b16e43c688" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_5500b2af-5240-45e1-881e-c4b16e43c688" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_6118d15d-ba3c-4947-8256-3e3240ba9e5e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_6118d15d-ba3c-4947-8256-3e3240ba9e5e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_3aa0e707-a98d-4df5-80ab-56b77474a2a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_3aa0e707-a98d-4df5-80ab-56b77474a2a9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployerContribution_23a79c3d-b23c-4631-aa0c-af82056d0476" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployerContribution"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployerContribution_23a79c3d-b23c-4631-aa0c-af82056d0476" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardContributionAmountByEmployeeForMatching_8fb9dcbb-747e-48cc-9f18-f9981e7b2cc5" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardContributionAmountByEmployeeForMatching"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardContributionAmountByEmployeeForMatching_8fb9dcbb-747e-48cc-9f18-f9981e7b2cc5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeContributionPerYear_dcaaff77-7597-48e5-b50e-46cca217826c" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeContributionPerYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_ed_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeContributionPerYear_dcaaff77-7597-48e5-b50e-46cca217826c" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_7ca7d0b3-fa78-4ece-8487-2979ac593d79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_7ca7d0b3-fa78-4ece-8487-2979ac593d79" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_0f425ec9-bcea-4418-9bf4-0794f3071264" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_0f425ec9-bcea-4418-9bf4-0794f3071264" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_5c8704be-8fbd-4fb9-a6e5-41db0a391c0a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_5c8704be-8fbd-4fb9-a6e5-41db0a391c0a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_608a7c00-b28f-4533-b3c3-5b627f64a719" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c63a53bd-0aa9-4218-a596-def5245aa3b4" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_608a7c00-b28f-4533-b3c3-5b627f64a719" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_8f6c5552-2e14-41aa-a9d3-49ea8ae169bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_608a7c00-b28f-4533-b3c3-5b627f64a719" xlink:to="loc_us-gaap_PlanNameAxis_8f6c5552-2e14-41aa-a9d3-49ea8ae169bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_8f6c5552-2e14-41aa-a9d3-49ea8ae169bc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_8f6c5552-2e14-41aa-a9d3-49ea8ae169bc" xlink:to="loc_us-gaap_PlanNameDomain_8f6c5552-2e14-41aa-a9d3-49ea8ae169bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_8f6c5552-2e14-41aa-a9d3-49ea8ae169bc" xlink:to="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_A2013LTIPMember_24c8a49d-c480-402a-a834-4a8de9b854b5" xlink:href="ed-20221231.xsd#ed_A2013LTIPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:to="loc_ed_A2013LTIPMember_24c8a49d-c480-402a-a834-4a8de9b854b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TsrPortionMember_0d7f07a5-e407-4778-b473-eb8863c130d4" xlink:href="ed-20221231.xsd#ed_TsrPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:to="loc_ed_TsrPortionMember_0d7f07a5-e407-4778-b473-eb8863c130d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonTsrPortionMember_8b39833a-6e52-4f80-9cb1-396f1fd89bfe" xlink:href="ed-20221231.xsd#ed_NonTsrPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:to="loc_ed_NonTsrPortionMember_8b39833a-6e52-4f80-9cb1-396f1fd89bfe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_LTIPMember_4315a386-3f3e-4859-ad34-f6ab7229fe6b" xlink:href="ed-20221231.xsd#ed_LTIPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:to="loc_ed_LTIPMember_4315a386-3f3e-4859-ad34-f6ab7229fe6b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_StockPurchasePlanMember_1959fe25-af42-454a-8cb9-9686251735a9" xlink:href="ed-20221231.xsd#ed_StockPurchasePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_006afca6-aa77-4523-9014-0fe32aa8bae7" xlink:to="loc_ed_StockPurchasePlanMember_1959fe25-af42-454a-8cb9-9686251735a9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_d8c08315-3f8c-48d3-82f5-489f5f301e06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_608a7c00-b28f-4533-b3c3-5b627f64a719" xlink:to="loc_us-gaap_AwardTypeAxis_d8c08315-3f8c-48d3-82f5-489f5f301e06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d8c08315-3f8c-48d3-82f5-489f5f301e06_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_d8c08315-3f8c-48d3-82f5-489f5f301e06" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d8c08315-3f8c-48d3-82f5-489f5f301e06_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f7cbfabf-db55-4a82-9431-8ba77a21f88c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_d8c08315-3f8c-48d3-82f5-489f5f301e06" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f7cbfabf-db55-4a82-9431-8ba77a21f88c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PerformancebasedRestrictedStockUnitsMember_b60e5c94-93fa-4695-bd31-f9551b95c402" xlink:href="ed-20221231.xsd#ed_PerformancebasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f7cbfabf-db55-4a82-9431-8ba77a21f88c" xlink:to="loc_ed_PerformancebasedRestrictedStockUnitsMember_b60e5c94-93fa-4695-bd31-f9551b95c402" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_391e3226-d2a8-4896-912f-4f5c2f533ca8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f7cbfabf-db55-4a82-9431-8ba77a21f88c" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_391e3226-d2a8-4896-912f-4f5c2f533ca8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TimeBasedAwardsMember_ef21bb1e-349d-4380-b997-8777e8ad4a0c" xlink:href="ed-20221231.xsd#ed_TimeBasedAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f7cbfabf-db55-4a82-9431-8ba77a21f88c" xlink:to="loc_ed_TimeBasedAwardsMember_ef21bb1e-349d-4380-b997-8777e8ad4a0c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_21cf4f3c-9cfc-4c8a-a9a8-c30bbab3b137" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_608a7c00-b28f-4533-b3c3-5b627f64a719" xlink:to="loc_dei_LegalEntityAxis_21cf4f3c-9cfc-4c8a-a9a8-c30bbab3b137" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_21cf4f3c-9cfc-4c8a-a9a8-c30bbab3b137_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_21cf4f3c-9cfc-4c8a-a9a8-c30bbab3b137" xlink:to="loc_dei_EntityDomain_21cf4f3c-9cfc-4c8a-a9a8-c30bbab3b137_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a57f2095-22c0-4c3b-9b49-3b8cc37c6608" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_21cf4f3c-9cfc-4c8a-a9a8-c30bbab3b137" xlink:to="loc_dei_EntityDomain_a57f2095-22c0-4c3b-9b49-3b8cc37c6608" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_4aa8f69a-7156-4d8a-9f3c-19bd6a72e406" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a57f2095-22c0-4c3b-9b49-3b8cc37c6608" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_4aa8f69a-7156-4d8a-9f3c-19bd6a72e406" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/StockBasedCompensationStockBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#StockBasedCompensationStockBasedCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/StockBasedCompensationStockBasedCompensationExpenseDetails" xlink:type="extended" id="i28b459adc8894ee2b25ab0ee51bb9818_StockBasedCompensationStockBasedCompensationExpenseDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_abd122b2-dffd-4486-97a8-79ab8c0e9840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_bfd5ad12-2b50-414b-beb9-a555d14ef14e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_abd122b2-dffd-4486-97a8-79ab8c0e9840" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_bfd5ad12-2b50-414b-beb9-a555d14ef14e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_1879305a-843d-4106-a48e-dabf2161c1f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_abd122b2-dffd-4486-97a8-79ab8c0e9840" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_1879305a-843d-4106-a48e-dabf2161c1f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1ca38e18-c9dc-4636-8c57-089ff1729f70" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_abd122b2-dffd-4486-97a8-79ab8c0e9840" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1ca38e18-c9dc-4636-8c57-089ff1729f70" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8ee42201-6642-42d0-affd-d7a6aa95916f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1ca38e18-c9dc-4636-8c57-089ff1729f70" xlink:to="loc_dei_LegalEntityAxis_8ee42201-6642-42d0-affd-d7a6aa95916f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8ee42201-6642-42d0-affd-d7a6aa95916f_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8ee42201-6642-42d0-affd-d7a6aa95916f" xlink:to="loc_dei_EntityDomain_8ee42201-6642-42d0-affd-d7a6aa95916f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_13a45659-95ea-4c6a-bec2-a43deddf8084" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8ee42201-6642-42d0-affd-d7a6aa95916f" xlink:to="loc_dei_EntityDomain_13a45659-95ea-4c6a-bec2-a43deddf8084" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_bf902a5b-8116-4f08-841e-a6c209a05eb8" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_13a45659-95ea-4c6a-bec2-a43deddf8084" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_bf902a5b-8116-4f08-841e-a6c209a05eb8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_465fbf72-8f2a-4813-ad38-f8b807c93494" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1ca38e18-c9dc-4636-8c57-089ff1729f70" xlink:to="loc_us-gaap_AwardTypeAxis_465fbf72-8f2a-4813-ad38-f8b807c93494" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_465fbf72-8f2a-4813-ad38-f8b807c93494_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_465fbf72-8f2a-4813-ad38-f8b807c93494" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_465fbf72-8f2a-4813-ad38-f8b807c93494_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bf855a70-a099-4200-96e3-8bc29aaf4c78" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_465fbf72-8f2a-4813-ad38-f8b807c93494" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bf855a70-a099-4200-96e3-8bc29aaf4c78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PerformanceBasedRestrictedStockMember_b32dcec0-c83c-42ff-ab72-b202aa85d20e" xlink:href="ed-20221231.xsd#ed_PerformanceBasedRestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bf855a70-a099-4200-96e3-8bc29aaf4c78" xlink:to="loc_ed_PerformanceBasedRestrictedStockMember_b32dcec0-c83c-42ff-ab72-b202aa85d20e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TimeBasedRestrictedStockMember_8eb55567-5056-4bc7-9f6a-b621c5ac022e" xlink:href="ed-20221231.xsd#ed_TimeBasedRestrictedStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bf855a70-a099-4200-96e3-8bc29aaf4c78" xlink:to="loc_ed_TimeBasedRestrictedStockMember_8eb55567-5056-4bc7-9f6a-b621c5ac022e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonEmployeeDirectorStockCompensationMember_174734bd-7f77-45ca-bcf8-7fc662eb7121" xlink:href="ed-20221231.xsd#ed_NonEmployeeDirectorStockCompensationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bf855a70-a099-4200-96e3-8bc29aaf4c78" xlink:to="loc_ed_NonEmployeeDirectorStockCompensationMember_174734bd-7f77-45ca-bcf8-7fc662eb7121" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_ffafe4d5-4d69-4ab7-acc8-570f3a37d15c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bf855a70-a099-4200-96e3-8bc29aaf4c78" xlink:to="loc_us-gaap_EmployeeStockMember_ffafe4d5-4d69-4ab7-acc8-570f3a37d15c" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/StockBasedCompensationAssumptionsUsedtoCalculateFairValueDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#StockBasedCompensationAssumptionsUsedtoCalculateFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/StockBasedCompensationAssumptionsUsedtoCalculateFairValueDetails" xlink:type="extended" id="ib5c82b2c5bf0448eb0996f669b390853_StockBasedCompensationAssumptionsUsedtoCalculateFairValueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum_bee263b5-c268-483c-a679-7b93e5c4f12b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum_bee263b5-c268-483c-a679-7b93e5c4f12b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum_35b83a36-f1c6-4ed4-97cb-8033ee4ff182" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum_35b83a36-f1c6-4ed4-97cb-8033ee4ff182" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_dccf4f28-6dec-4c02-8f3c-706f03113c10" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_dccf4f28-6dec-4c02-8f3c-706f03113c10" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum_bed527e2-cdcd-4910-8489-6c5757595d26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum_bed527e2-cdcd-4910-8489-6c5757595d26" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum_09c03582-2918-4f57-a379-5bf7a575a500" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum_09c03582-2918-4f57-a379-5bf7a575a500" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ad679cd5-4a54-4124-85f4-0ac91b8db983" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2ef16b04-d762-46a1-a193-2a4a1842a921" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ad679cd5-4a54-4124-85f4-0ac91b8db983" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_833bc404-06a2-44c0-b897-67d845ec8eb5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ad679cd5-4a54-4124-85f4-0ac91b8db983" xlink:to="loc_us-gaap_AwardTypeAxis_833bc404-06a2-44c0-b897-67d845ec8eb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_833bc404-06a2-44c0-b897-67d845ec8eb5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_833bc404-06a2-44c0-b897-67d845ec8eb5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_833bc404-06a2-44c0-b897-67d845ec8eb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c6202d7f-56d0-41b8-a5df-ff80321121a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_833bc404-06a2-44c0-b897-67d845ec8eb5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c6202d7f-56d0-41b8-a5df-ff80321121a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PerformancebasedRestrictedStockUnitsMember_26a5e764-6f1d-4c6d-9bce-aa3b7afa8c92" xlink:href="ed-20221231.xsd#ed_PerformancebasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c6202d7f-56d0-41b8-a5df-ff80321121a8" xlink:to="loc_ed_PerformancebasedRestrictedStockUnitsMember_26a5e764-6f1d-4c6d-9bce-aa3b7afa8c92" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/StockBasedCompensationSummaryofChangesinStatusofPerformanceRSUsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#StockBasedCompensationSummaryofChangesinStatusofPerformanceRSUsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/StockBasedCompensationSummaryofChangesinStatusofPerformanceRSUsDetails" xlink:type="extended" id="ibf88d6b140d34f5e9bbf7035dfc20d72_StockBasedCompensationSummaryofChangesinStatusofPerformanceRSUsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_94965cc9-685f-45f7-bc86-95f1487dd579" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_f4273bf4-91cd-47bf-b7cd-77374e412736" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_94965cc9-685f-45f7-bc86-95f1487dd579" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_f4273bf4-91cd-47bf-b7cd-77374e412736" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1e04d88f-816d-4977-bae6-e835f7f418a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_f4273bf4-91cd-47bf-b7cd-77374e412736" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1e04d88f-816d-4977-bae6-e835f7f418a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_cb8fdc54-8ab3-4a91-9a40-5f6b35f143c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_f4273bf4-91cd-47bf-b7cd-77374e412736" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_cb8fdc54-8ab3-4a91-9a40-5f6b35f143c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_f105ccc1-389a-491f-a614-f889fe394f8f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_f4273bf4-91cd-47bf-b7cd-77374e412736" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_f105ccc1-389a-491f-a614-f889fe394f8f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_13a256b5-e441-4daa-88a3-fca4c623f704" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_f4273bf4-91cd-47bf-b7cd-77374e412736" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_13a256b5-e441-4daa-88a3-fca4c623f704" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_23f03fc7-0940-4b1a-8d34-e4a2e528dba1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c449c9e7-fd65-4124-b11b-851d55e89898" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_94965cc9-685f-45f7-bc86-95f1487dd579" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c449c9e7-fd65-4124-b11b-851d55e89898" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_a54be029-246b-4286-ac79-9d6d2379f2e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c449c9e7-fd65-4124-b11b-851d55e89898" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_a54be029-246b-4286-ac79-9d6d2379f2e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4dcf549d-5bef-49cb-b31f-4ba87a69f2a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c449c9e7-fd65-4124-b11b-851d55e89898" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_4dcf549d-5bef-49cb-b31f-4ba87a69f2a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_3c7bb6fc-bfeb-4da2-a9dc-c89d2337e7c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c449c9e7-fd65-4124-b11b-851d55e89898" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_3c7bb6fc-bfeb-4da2-a9dc-c89d2337e7c2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ca0c32f6-0e64-47e0-a061-3266ff2bad7e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c449c9e7-fd65-4124-b11b-851d55e89898" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ca0c32f6-0e64-47e0-a061-3266ff2bad7e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ae1aac20-98eb-4a97-a0da-5dd9f5c4b374" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ShareBasedCompensationArrangementPercentageOfRsu_c46f5380-9d6c-4cb7-b710-74e9c873293e" xlink:href="ed-20221231.xsd#ed_ShareBasedCompensationArrangementPercentageOfRsu"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_94965cc9-685f-45f7-bc86-95f1487dd579" xlink:to="loc_ed_ShareBasedCompensationArrangementPercentageOfRsu_c46f5380-9d6c-4cb7-b710-74e9c873293e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e6d52bf1-8195-40fd-ba19-123c42e1a189" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_94965cc9-685f-45f7-bc86-95f1487dd579" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e6d52bf1-8195-40fd-ba19-123c42e1a189" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_2e0927a5-d566-465f-a9b4-6487cac4c895" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e6d52bf1-8195-40fd-ba19-123c42e1a189" xlink:to="loc_us-gaap_AwardTypeAxis_2e0927a5-d566-465f-a9b4-6487cac4c895" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2e0927a5-d566-465f-a9b4-6487cac4c895_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_2e0927a5-d566-465f-a9b4-6487cac4c895" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2e0927a5-d566-465f-a9b4-6487cac4c895_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_03d54b51-8903-4ccd-b59e-d2508f853fcd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_2e0927a5-d566-465f-a9b4-6487cac4c895" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_03d54b51-8903-4ccd-b59e-d2508f853fcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PerformancebasedRestrictedStockUnitsMember_0f3a02fc-dff4-4e25-9af2-af61b3bd43a1" xlink:href="ed-20221231.xsd#ed_PerformancebasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_03d54b51-8903-4ccd-b59e-d2508f853fcd" xlink:to="loc_ed_PerformancebasedRestrictedStockUnitsMember_0f3a02fc-dff4-4e25-9af2-af61b3bd43a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_4197e4a8-d7e8-4c93-a26a-2965aac604f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e6d52bf1-8195-40fd-ba19-123c42e1a189" xlink:to="loc_us-gaap_PlanNameAxis_4197e4a8-d7e8-4c93-a26a-2965aac604f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_4197e4a8-d7e8-4c93-a26a-2965aac604f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_4197e4a8-d7e8-4c93-a26a-2965aac604f0" xlink:to="loc_us-gaap_PlanNameDomain_4197e4a8-d7e8-4c93-a26a-2965aac604f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_5daac557-5e59-4936-b64c-4cdf806d188f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_4197e4a8-d7e8-4c93-a26a-2965aac604f0" xlink:to="loc_us-gaap_PlanNameDomain_5daac557-5e59-4936-b64c-4cdf806d188f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TsrPortionMember_8c38944e-e372-41bc-8207-ea9f4d880a1a" xlink:href="ed-20221231.xsd#ed_TsrPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_5daac557-5e59-4936-b64c-4cdf806d188f" xlink:to="loc_ed_TsrPortionMember_8c38944e-e372-41bc-8207-ea9f4d880a1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonTsrPortionMember_3e97fdf8-d908-4dca-86d8-c65af7be6200" xlink:href="ed-20221231.xsd#ed_NonTsrPortionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_5daac557-5e59-4936-b64c-4cdf806d188f" xlink:to="loc_ed_NonTsrPortionMember_3e97fdf8-d908-4dca-86d8-c65af7be6200" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1377465d-4f28-4868-b9bd-4be34227863a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e6d52bf1-8195-40fd-ba19-123c42e1a189" xlink:to="loc_dei_LegalEntityAxis_1377465d-4f28-4868-b9bd-4be34227863a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1377465d-4f28-4868-b9bd-4be34227863a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1377465d-4f28-4868-b9bd-4be34227863a" xlink:to="loc_dei_EntityDomain_1377465d-4f28-4868-b9bd-4be34227863a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_74048f48-a689-410f-8355-c8e17e4934d6" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1377465d-4f28-4868-b9bd-4be34227863a" xlink:to="loc_dei_EntityDomain_74048f48-a689-410f-8355-c8e17e4934d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_76117980-a991-4eea-ae49-4bc2ed7a8ae7" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_74048f48-a689-410f-8355-c8e17e4934d6" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_76117980-a991-4eea-ae49-4bc2ed7a8ae7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/StockBasedCompensationSummaryofChangesinStatusofTimeBasedAwardsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#StockBasedCompensationSummaryofChangesinStatusofTimeBasedAwardsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/StockBasedCompensationSummaryofChangesinStatusofTimeBasedAwardsDetails" xlink:type="extended" id="iaf69989c2e014b1d92f0ab9c53b3bd70_StockBasedCompensationSummaryofChangesinStatusofTimeBasedAwardsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fe07e732-7552-4a94-9cac-44d8535fdba3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_29f5556d-2588-4ac2-b79a-372340e1e9b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fe07e732-7552-4a94-9cac-44d8535fdba3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_29f5556d-2588-4ac2-b79a-372340e1e9b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1b990614-0349-45ee-90ab-3c7b56f49c15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_29f5556d-2588-4ac2-b79a-372340e1e9b5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1b990614-0349-45ee-90ab-3c7b56f49c15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_adaba647-b70c-4e94-ba3c-588c7d81acc4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_29f5556d-2588-4ac2-b79a-372340e1e9b5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_adaba647-b70c-4e94-ba3c-588c7d81acc4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_8118da73-3c65-4e41-8d61-77f193c452f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_29f5556d-2588-4ac2-b79a-372340e1e9b5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_8118da73-3c65-4e41-8d61-77f193c452f0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_4ec53116-a43c-48b8-8bfa-736f260e2a57" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_29f5556d-2588-4ac2-b79a-372340e1e9b5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_4ec53116-a43c-48b8-8bfa-736f260e2a57" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_692023bf-6a3b-45df-af05-f5d51553f589" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ee2d0319-2b40-45d6-9322-d50991a761a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fe07e732-7552-4a94-9cac-44d8535fdba3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ee2d0319-2b40-45d6-9322-d50991a761a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_7ce09c94-4d7b-4823-91e7-c83260add9cc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ee2d0319-2b40-45d6-9322-d50991a761a2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_7ce09c94-4d7b-4823-91e7-c83260add9cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_5cc112dd-c7e0-473e-9c26-f82888bc8d50" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ee2d0319-2b40-45d6-9322-d50991a761a2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_5cc112dd-c7e0-473e-9c26-f82888bc8d50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_2264adbd-d6e2-48b4-b11e-152cc40a23ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ee2d0319-2b40-45d6-9322-d50991a761a2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_2264adbd-d6e2-48b4-b11e-152cc40a23ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_e87056dd-fe17-4cd6-b09d-11e9d9c56c25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ee2d0319-2b40-45d6-9322-d50991a761a2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_e87056dd-fe17-4cd6-b09d-11e9d9c56c25" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_f7d0a9dd-5786-4b5a-8658-d2047e0155fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_29a4ab8e-b28f-4f38-aa3f-7afe97f22a9b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fe07e732-7552-4a94-9cac-44d8535fdba3" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_29a4ab8e-b28f-4f38-aa3f-7afe97f22a9b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a7fd71a0-0ae2-4b16-a2b6-a8e9a249ce41" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_29a4ab8e-b28f-4f38-aa3f-7afe97f22a9b" xlink:to="loc_dei_LegalEntityAxis_a7fd71a0-0ae2-4b16-a2b6-a8e9a249ce41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a7fd71a0-0ae2-4b16-a2b6-a8e9a249ce41_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a7fd71a0-0ae2-4b16-a2b6-a8e9a249ce41" xlink:to="loc_dei_EntityDomain_a7fd71a0-0ae2-4b16-a2b6-a8e9a249ce41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6b30e9cd-68e1-4297-b265-293dee89687a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a7fd71a0-0ae2-4b16-a2b6-a8e9a249ce41" xlink:to="loc_dei_EntityDomain_6b30e9cd-68e1-4297-b265-293dee89687a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c04b1050-d79c-4c85-93f9-a471b70d7865" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6b30e9cd-68e1-4297-b265-293dee89687a" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c04b1050-d79c-4c85-93f9-a471b70d7865" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_552022e2-8f14-4864-bd1f-f63e7dc760ef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_29a4ab8e-b28f-4f38-aa3f-7afe97f22a9b" xlink:to="loc_us-gaap_AwardTypeAxis_552022e2-8f14-4864-bd1f-f63e7dc760ef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_552022e2-8f14-4864-bd1f-f63e7dc760ef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_552022e2-8f14-4864-bd1f-f63e7dc760ef" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_552022e2-8f14-4864-bd1f-f63e7dc760ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d55f5683-0acb-4306-a299-fef88c2af4fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_552022e2-8f14-4864-bd1f-f63e7dc760ef" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d55f5683-0acb-4306-a299-fef88c2af4fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TimeBasedAwardsMember_b4c3b87a-f078-4a8e-96c8-62fcc57b0d76" xlink:href="ed-20221231.xsd#ed_TimeBasedAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d55f5683-0acb-4306-a299-fef88c2af4fd" xlink:to="loc_ed_TimeBasedAwardsMember_b4c3b87a-f078-4a8e-96c8-62fcc57b0d76" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/FinancialInformationbyBusinessSegmentDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#FinancialInformationbyBusinessSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/FinancialInformationbyBusinessSegmentDetails" xlink:type="extended" id="ic270ec2c761447178d815164c6922990_FinancialInformationbyBusinessSegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_16aa3a88-4bc6-4a08-b2d5-38001543f01a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_Revenues_16aa3a88-4bc6-4a08-b2d5-38001543f01a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_73e7b0b9-8b72-43b4-a685-c94fb595dbb4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_DepreciationAndAmortization_73e7b0b9-8b72-43b4-a685-c94fb595dbb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_820ede75-eaf7-4a92-b0c7-69d2a65e8a33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_OperatingIncomeLoss_820ede75-eaf7-4a92-b0c7-69d2a65e8a33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_b5db1b70-f475-40d8-bd12-8dbe2088dc9a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_b5db1b70-f475-40d8-bd12-8dbe2088dc9a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDebtExpense_9d853f94-50cf-424d-ae1a-a91977920418" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestAndDebtExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_InterestAndDebtExpense_9d853f94-50cf-424d-ae1a-a91977920418" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OperatingIncomeTaxExpenseBenefit_2349474d-6262-4eb1-9641-ba67729f8941" xlink:href="ed-20221231.xsd#ed_OperatingIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_ed_OperatingIncomeTaxExpenseBenefit_2349474d-6262-4eb1-9641-ba67729f8941" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_4bcd3473-4a2b-4e25-b1ca-1a59b5cae71e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_Assets_4bcd3473-4a2b-4e25-b1ca-1a59b5cae71e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_0a6d096a-c3f1-444c-82a1-51cfb103cb95" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_0a6d096a-c3f1-444c-82a1-51cfb103cb95" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncomeTaxExpenseBenefitApplicableToNonOperatingIncome_1ee304fd-b70c-4c68-9e1d-df9dc76caa4b" xlink:href="ed-20221231.xsd#ed_IncomeTaxExpenseBenefitApplicableToNonOperatingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_ed_IncomeTaxExpenseBenefitApplicableToNonOperatingIncome_1ee304fd-b70c-4c68-9e1d-df9dc76caa4b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6ed8fd49-0a14-48b6-8a11-f37e156316da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e801be16-4594-413c-89f0-713c28be93b4" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6ed8fd49-0a14-48b6-8a11-f37e156316da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_958b2995-2fb9-43f5-98e1-facb52b621c4" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6ed8fd49-0a14-48b6-8a11-f37e156316da" xlink:to="loc_srt_ConsolidationItemsAxis_958b2995-2fb9-43f5-98e1-facb52b621c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_958b2995-2fb9-43f5-98e1-facb52b621c4_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_958b2995-2fb9-43f5-98e1-facb52b621c4" xlink:to="loc_srt_ConsolidationItemsDomain_958b2995-2fb9-43f5-98e1-facb52b621c4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_b1d48294-8841-4bd3-93d3-112cc9dadfaf" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_958b2995-2fb9-43f5-98e1-facb52b621c4" xlink:to="loc_srt_ConsolidationItemsDomain_b1d48294-8841-4bd3-93d3-112cc9dadfaf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_d8e62757-0bf8-461d-9fff-9bd66819db7f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_b1d48294-8841-4bd3-93d3-112cc9dadfaf" xlink:to="loc_us-gaap_OperatingSegmentsMember_d8e62757-0bf8-461d-9fff-9bd66819db7f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CorporateAndReconcilingItemsMember_23165071-bf66-45f9-a3f8-e3bda31b9a68" xlink:href="ed-20221231.xsd#ed_CorporateAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_b1d48294-8841-4bd3-93d3-112cc9dadfaf" xlink:to="loc_ed_CorporateAndReconcilingItemsMember_23165071-bf66-45f9-a3f8-e3bda31b9a68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_44015d88-a2cd-4cf9-81bc-584de6c0bac7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_b1d48294-8841-4bd3-93d3-112cc9dadfaf" xlink:to="loc_us-gaap_IntersegmentEliminationMember_44015d88-a2cd-4cf9-81bc-584de6c0bac7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_48e73e86-246b-4cd6-b98e-387946de4ce2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6ed8fd49-0a14-48b6-8a11-f37e156316da" xlink:to="loc_dei_LegalEntityAxis_48e73e86-246b-4cd6-b98e-387946de4ce2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_48e73e86-246b-4cd6-b98e-387946de4ce2_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_48e73e86-246b-4cd6-b98e-387946de4ce2" xlink:to="loc_dei_EntityDomain_48e73e86-246b-4cd6-b98e-387946de4ce2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3e9ab1f8-d51d-4911-9c30-9865067716a8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_48e73e86-246b-4cd6-b98e-387946de4ce2" xlink:to="loc_dei_EntityDomain_3e9ab1f8-d51d-4911-9c30-9865067716a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_13459817-c839-4316-aa38-723c3b99c01b" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3e9ab1f8-d51d-4911-9c30-9865067716a8" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_13459817-c839-4316-aa38-723c3b99c01b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_f3bc3026-1042-447d-be23-36afef817cee" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3e9ab1f8-d51d-4911-9c30-9865067716a8" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_f3bc3026-1042-447d-be23-36afef817cee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilityAxis_9337e3a8-99f8-4b63-ab76-06c26f48f7cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6ed8fd49-0a14-48b6-8a11-f37e156316da" xlink:to="loc_us-gaap_PublicUtilityAxis_9337e3a8-99f8-4b63-ab76-06c26f48f7cd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_9337e3a8-99f8-4b63-ab76-06c26f48f7cd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilityAxis_9337e3a8-99f8-4b63-ab76-06c26f48f7cd" xlink:to="loc_us-gaap_UtilityPlantDomain_9337e3a8-99f8-4b63-ab76-06c26f48f7cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilityPlantDomain_2944aad7-7975-44a8-8b34-672ac4a25a2a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UtilityPlantDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilityAxis_9337e3a8-99f8-4b63-ab76-06c26f48f7cd" xlink:to="loc_us-gaap_UtilityPlantDomain_2944aad7-7975-44a8-8b34-672ac4a25a2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ElectricTransmissionMember_d1bd6a4a-1425-4876-bc34-585e8d48dc96" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ElectricTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_2944aad7-7975-44a8-8b34-672ac4a25a2a" xlink:to="loc_us-gaap_ElectricTransmissionMember_d1bd6a4a-1425-4876-bc34-585e8d48dc96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GasTransmissionMember_6538478d-0217-412e-a8bb-7035eb8b9ab5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GasTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_2944aad7-7975-44a8-8b34-672ac4a25a2a" xlink:to="loc_us-gaap_GasTransmissionMember_6538478d-0217-412e-a8bb-7035eb8b9ab5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SteamPlantMember_081a7415-13f2-446e-a0cf-f0e798891ff9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SteamPlantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UtilityPlantDomain_2944aad7-7975-44a8-8b34-672ac4a25a2a" xlink:to="loc_us-gaap_SteamPlantMember_081a7415-13f2-446e-a0cf-f0e798891ff9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_0a72d4cb-1888-44f1-b702-a77288fab25e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_6ed8fd49-0a14-48b6-8a11-f37e156316da" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_0a72d4cb-1888-44f1-b702-a77288fab25e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_0a72d4cb-1888-44f1-b702-a77288fab25e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0a72d4cb-1888-44f1-b702-a77288fab25e" xlink:to="loc_us-gaap_SegmentDomain_0a72d4cb-1888-44f1-b702-a77288fab25e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_5b360da2-b315-4334-817f-65cdcbec2f09" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0a72d4cb-1888-44f1-b702-a77288fab25e" xlink:to="loc_us-gaap_SegmentDomain_5b360da2-b315-4334-817f-65cdcbec2f09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_d64de39a-5791-47c0-92ef-d7fc0a928778" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5b360da2-b315-4334-817f-65cdcbec2f09" xlink:to="loc_ed_CleanEnergyBusinessesMember_d64de39a-5791-47c0-92ef-d7fc0a928778" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_d1915c8e-05c6-4c47-b7a0-86a509858679" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5b360da2-b315-4334-817f-65cdcbec2f09" xlink:to="loc_ed_ConEdisonTransmissionMember_d1915c8e-05c6-4c47-b7a0-86a509858679" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesFairValuesofCommodityDerivativesIncludingOffsettingofAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#DerivativeInstrumentsandHedgingActivitiesFairValuesofCommodityDerivativesIncludingOffsettingofAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesFairValuesofCommodityDerivativesIncludingOffsettingofAssetsandLiabilitiesDetails" xlink:type="extended" id="i6de00fb369c744649f2dd993e34de9a7_DerivativeInstrumentsandHedgingActivitiesFairValuesofCommodityDerivativesIncludingOffsettingofAssetsandLiabilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffsettingDerivativeAssetsAbstract_28f896bf-1048-4b9f-901e-b0f2f68b3c98" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OffsettingDerivativeAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_us-gaap_OffsettingDerivativeAssetsAbstract_28f896bf-1048-4b9f-901e-b0f2f68b3c98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_0340da93-2dbd-46f1-85ae-45884046763c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_28f896bf-1048-4b9f-901e-b0f2f68b3c98" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_0340da93-2dbd-46f1-85ae-45884046763c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossLiability_247610a8-133f-49d1-86f6-6adf2f7f59a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetFairValueGrossLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_28f896bf-1048-4b9f-901e-b0f2f68b3c98" xlink:to="loc_us-gaap_DerivativeAssetFairValueGrossLiability_247610a8-133f-49d1-86f6-6adf2f7f59a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_ddf46738-e0eb-437f-ac4f-d5f524d205c3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeAssetsAbstract_28f896bf-1048-4b9f-901e-b0f2f68b3c98" xlink:to="loc_us-gaap_DerivativeAssets_ddf46738-e0eb-437f-ac4f-d5f524d205c3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_aed52f95-202b-4ad5-977c-3978bbb85e2f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OffsettingDerivativeLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_aed52f95-202b-4ad5-977c-3978bbb85e2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_e4e51ee2-ab66-493b-b485-e5c260a4d26f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_aed52f95-202b-4ad5-977c-3978bbb85e2f" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_e4e51ee2-ab66-493b-b485-e5c260a4d26f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_5f5d7333-65ad-434c-a1f3-d0787b7e6dde" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilityFairValueGrossAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_aed52f95-202b-4ad5-977c-3978bbb85e2f" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_5f5d7333-65ad-434c-a1f3-d0787b7e6dde" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_082db199-1754-4bab-975d-d4967226b9b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OffsettingDerivativeLiabilitiesAbstract_aed52f95-202b-4ad5-977c-3978bbb85e2f" xlink:to="loc_us-gaap_DerivativeLiabilities_082db199-1754-4bab-975d-d4967226b9b0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OffsettingDerivativeAssetsandLiabilitiesAbstract_7fdc15e5-1c94-4b43-beda-e4b6c2d728ce" xlink:href="ed-20221231.xsd#ed_OffsettingDerivativeAssetsandLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_ed_OffsettingDerivativeAssetsandLiabilitiesAbstract_7fdc15e5-1c94-4b43-beda-e4b6c2d728ce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GrossAmountsofRecognizedAssetsLiabilities_730de04d-f3b6-4b3f-931f-6d8e0f7c477f" xlink:href="ed-20221231.xsd#ed_GrossAmountsofRecognizedAssetsLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_OffsettingDerivativeAssetsandLiabilitiesAbstract_7fdc15e5-1c94-4b43-beda-e4b6c2d728ce" xlink:to="loc_ed_GrossAmountsofRecognizedAssetsLiabilities_730de04d-f3b6-4b3f-931f-6d8e0f7c477f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeAssetLiabilityGrossAmountOffsetInBalanceSheet_2b1eef32-cfd0-43f4-baa8-a52261c95c94" xlink:href="ed-20221231.xsd#ed_DerivativeAssetLiabilityGrossAmountOffsetInBalanceSheet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_OffsettingDerivativeAssetsandLiabilitiesAbstract_7fdc15e5-1c94-4b43-beda-e4b6c2d728ce" xlink:to="loc_ed_DerivativeAssetLiabilityGrossAmountOffsetInBalanceSheet_2b1eef32-cfd0-43f4-baa8-a52261c95c94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_d07b7364-5840-452d-972a-32584da6767a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_OffsettingDerivativeAssetsandLiabilitiesAbstract_7fdc15e5-1c94-4b43-beda-e4b6c2d728ce" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeNet_d07b7364-5840-452d-972a-32584da6767a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarginDepositAssets_d8acaa3a-2011-42b2-ab3b-14bb258d699a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MarginDepositAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_us-gaap_MarginDepositAssets_d8acaa3a-2011-42b2-ab3b-14bb258d699a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MarginDepositLiability_7914441a-e001-46dc-9e65-74d02c814194" xlink:href="ed-20221231.xsd#ed_MarginDepositLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_ed_MarginDepositLiability_7914441a-e001-46dc-9e65-74d02c814194" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_a121b8e6-ef0e-41dd-b06e-29510fe78630" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_a121b8e6-ef0e-41dd-b06e-29510fe78630" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_287ca2b2-b746-41d7-a714-f5f393dd1a54" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_us-gaap_DerivativeNotionalAmount_287ca2b2-b746-41d7-a714-f5f393dd1a54" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_95296e6a-8bf7-4ec4-ba72-7f8767da8f47" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_ac6e18a2-a4de-48e1-ad6f-b80b7fdfc72d" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_95296e6a-8bf7-4ec4-ba72-7f8767da8f47" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_bdc9a29d-f555-4e34-bb57-501861fb9c83" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_95296e6a-8bf7-4ec4-ba72-7f8767da8f47" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_bdc9a29d-f555-4e34-bb57-501861fb9c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_bdc9a29d-f555-4e34-bb57-501861fb9c83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_bdc9a29d-f555-4e34-bb57-501861fb9c83" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_bdc9a29d-f555-4e34-bb57-501861fb9c83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_bdc9a29d-f555-4e34-bb57-501861fb9c83" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsCurrentAssetsMember_6bab5bd0-eb35-4c16-a3be-9f0f4a2e232a" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:to="loc_ed_DerivativeFinancialInstrumentsCurrentAssetsMember_6bab5bd0-eb35-4c16-a3be-9f0f4a2e232a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsNonCurrentAssetsMember_54eafe65-ee00-47d9-8da1-d05496e85714" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsNonCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:to="loc_ed_DerivativeFinancialInstrumentsNonCurrentAssetsMember_54eafe65-ee00-47d9-8da1-d05496e85714" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsHeldAndUsedAssetsMember_59b9d42b-eae2-4ca7-8e96-eadfb8bf986f" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsHeldAndUsedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:to="loc_ed_DerivativeFinancialInstrumentsHeldAndUsedAssetsMember_59b9d42b-eae2-4ca7-8e96-eadfb8bf986f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsHeldForSaleAssetsCurrentMember_94d9b10d-5af6-4745-8262-3d4509f67b96" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsHeldForSaleAssetsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:to="loc_ed_DerivativeFinancialInstrumentsHeldForSaleAssetsCurrentMember_94d9b10d-5af6-4745-8262-3d4509f67b96" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsHeldForSaleAssetsNonCurrentMember_dd957f00-a17f-4668-96ee-fdf9ccf6e31f" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsHeldForSaleAssetsNonCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:to="loc_ed_DerivativeFinancialInstrumentsHeldForSaleAssetsNonCurrentMember_dd957f00-a17f-4668-96ee-fdf9ccf6e31f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsAssetsMember_c749c2e5-5c36-424f-870c-1cd7336f55bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeFinancialInstrumentsAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6281b95a-7bfe-4bf9-ba9e-8d277a7919d7" xlink:to="loc_us-gaap_DerivativeFinancialInstrumentsAssetsMember_c749c2e5-5c36-424f-870c-1cd7336f55bf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_c5d42687-13ab-47cf-a034-0edcf7323728" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_95296e6a-8bf7-4ec4-ba72-7f8767da8f47" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_c5d42687-13ab-47cf-a034-0edcf7323728" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_c5d42687-13ab-47cf-a034-0edcf7323728_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_c5d42687-13ab-47cf-a034-0edcf7323728" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_c5d42687-13ab-47cf-a034-0edcf7323728_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_c5d42687-13ab-47cf-a034-0edcf7323728" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsCurrentLiabilitiesMember_6f603260-f8c5-48bb-9ba1-628f17f64f36" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsCurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:to="loc_ed_DerivativeFinancialInstrumentsCurrentLiabilitiesMember_6f603260-f8c5-48bb-9ba1-628f17f64f36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsNonCurrentLiabilitiesMember_14274b28-b178-405a-a31e-8416884ddc7a" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsNonCurrentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:to="loc_ed_DerivativeFinancialInstrumentsNonCurrentLiabilitiesMember_14274b28-b178-405a-a31e-8416884ddc7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsHeldAndUsedLiabilitiesMember_57582012-6e27-48e8-b009-df97ec9cd9ba" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsHeldAndUsedLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:to="loc_ed_DerivativeFinancialInstrumentsHeldAndUsedLiabilitiesMember_57582012-6e27-48e8-b009-df97ec9cd9ba" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsHeldForSaleLiabilitiesCurrentMember_60d55b64-01d0-49e0-af69-2fddfce0563e" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsHeldForSaleLiabilitiesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:to="loc_ed_DerivativeFinancialInstrumentsHeldForSaleLiabilitiesCurrentMember_60d55b64-01d0-49e0-af69-2fddfce0563e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeFinancialInstrumentsHeldForSaleLiabilitiesNonCurrentMember_2b2521d9-6b05-4ec2-be7e-269d14363d99" xlink:href="ed-20221231.xsd#ed_DerivativeFinancialInstrumentsHeldForSaleLiabilitiesNonCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:to="loc_ed_DerivativeFinancialInstrumentsHeldForSaleLiabilitiesNonCurrentMember_2b2521d9-6b05-4ec2-be7e-269d14363d99" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_e0e3df1d-5f48-4671-8e9f-ec36634712c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_a2ab9955-53a9-4012-8b76-ed5be8200dcf" xlink:to="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_e0e3df1d-5f48-4671-8e9f-ec36634712c8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4d15bb03-b67e-4116-8223-a0afce14a76d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_95296e6a-8bf7-4ec4-ba72-7f8767da8f47" xlink:to="loc_dei_LegalEntityAxis_4d15bb03-b67e-4116-8223-a0afce14a76d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4d15bb03-b67e-4116-8223-a0afce14a76d_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4d15bb03-b67e-4116-8223-a0afce14a76d" xlink:to="loc_dei_EntityDomain_4d15bb03-b67e-4116-8223-a0afce14a76d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4146d6bd-c133-427a-866e-6f209733d7c3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4d15bb03-b67e-4116-8223-a0afce14a76d" xlink:to="loc_dei_EntityDomain_4146d6bd-c133-427a-866e-6f209733d7c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_a888748e-ae47-4378-a4b6-d1e553e96360" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4146d6bd-c133-427a-866e-6f209733d7c3" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_a888748e-ae47-4378-a4b6-d1e553e96360" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_2eb9c8fe-3317-4c83-9795-76f48524fcbc" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4146d6bd-c133-427a-866e-6f209733d7c3" xlink:to="loc_ed_CleanEnergyBusinessesMember_2eb9c8fe-3317-4c83-9795-76f48524fcbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_caddb884-119d-4d41-bfaf-53872ad8f5c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_95296e6a-8bf7-4ec4-ba72-7f8767da8f47" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_caddb884-119d-4d41-bfaf-53872ad8f5c2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_caddb884-119d-4d41-bfaf-53872ad8f5c2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_caddb884-119d-4d41-bfaf-53872ad8f5c2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_caddb884-119d-4d41-bfaf-53872ad8f5c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_a416d9e1-af9b-48f5-a9f0-d3db5d22b237" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_caddb884-119d-4d41-bfaf-53872ad8f5c2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_a416d9e1-af9b-48f5-a9f0-d3db5d22b237" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_70c7feb5-0888-4abc-80f5-d1702b514aab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_a416d9e1-af9b-48f5-a9f0-d3db5d22b237" xlink:to="loc_us-gaap_InterestRateSwapMember_70c7feb5-0888-4abc-80f5-d1702b514aab" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesRealizedandUnrealizedGainsorLossesonCommodityDerivativesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#DerivativeInstrumentsandHedgingActivitiesRealizedandUnrealizedGainsorLossesonCommodityDerivativesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesRealizedandUnrealizedGainsorLossesonCommodityDerivativesDetails" xlink:type="extended" id="ic24e438f173a497e8e2730c64483c6c8_DerivativeInstrumentsandHedgingActivitiesRealizedandUnrealizedGainsorLossesonCommodityDerivativesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_0f9ff178-e9ee-4d59-be8f-c5c449a00a66" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract_2e081e41-b91a-4d1a-9c19-59279d72350a" xlink:href="ed-20221231.xsd#ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_0f9ff178-e9ee-4d59-be8f-c5c449a00a66" xlink:to="loc_ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract_2e081e41-b91a-4d1a-9c19-59279d72350a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredDerivativeGainsLosses_42ee02fc-a05e-4889-90c5-e6824934f31a" xlink:href="ed-20221231.xsd#ed_DeferredDerivativeGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract_2e081e41-b91a-4d1a-9c19-59279d72350a" xlink:to="loc_ed_DeferredDerivativeGainsLosses_42ee02fc-a05e-4889-90c5-e6824934f31a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredGainLossLiability_a2ec58bc-3bbe-4002-b391-bff983429216" xlink:href="ed-20221231.xsd#ed_DeferredGainLossLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract_2e081e41-b91a-4d1a-9c19-59279d72350a" xlink:to="loc_ed_DeferredGainLossLiability_a2ec58bc-3bbe-4002-b391-bff983429216" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NetDeferredGainLoss_24513bc3-ec39-4118-b534-04a8fde757a6" xlink:href="ed-20221231.xsd#ed_NetDeferredGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract_2e081e41-b91a-4d1a-9c19-59279d72350a" xlink:to="loc_ed_NetDeferredGainLoss_24513bc3-ec39-4118-b534-04a8fde757a6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_c2dfea61-0d61-4c8c-ad78-d94401e410d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_DerivativeAssetsLiabilitiesAtFairValueByBalanceSheetClassificationAbstract_2e081e41-b91a-4d1a-9c19-59279d72350a" xlink:to="loc_us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_c2dfea61-0d61-4c8c-ad78-d94401e410d2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PretaxEffectsOfDerivativeInstrumentsOnConsolidatedStatementsOfOperationsAbstract_c0d71289-c526-4c17-b725-c4c4ebe9426d" xlink:href="ed-20221231.xsd#ed_PretaxEffectsOfDerivativeInstrumentsOnConsolidatedStatementsOfOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_0f9ff178-e9ee-4d59-be8f-c5c449a00a66" xlink:to="loc_ed_PretaxEffectsOfDerivativeInstrumentsOnConsolidatedStatementsOfOperationsAbstract_c0d71289-c526-4c17-b725-c4c4ebe9426d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_7bac2ddc-d0f9-4b37-ae6f-5c568dbdaf19" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ed_PretaxEffectsOfDerivativeInstrumentsOnConsolidatedStatementsOfOperationsAbstract_c0d71289-c526-4c17-b725-c4c4ebe9426d" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_7bac2ddc-d0f9-4b37-ae6f-5c568dbdaf19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_b1d89c96-3fde-4bed-b857-8af17c1c00f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_0f9ff178-e9ee-4d59-be8f-c5c449a00a66" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_b1d89c96-3fde-4bed-b857-8af17c1c00f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_dc02c2cf-7193-406c-8243-8436ac2258e9" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_b1d89c96-3fde-4bed-b857-8af17c1c00f3" xlink:to="loc_dei_LegalEntityAxis_dc02c2cf-7193-406c-8243-8436ac2258e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dc02c2cf-7193-406c-8243-8436ac2258e9_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_dc02c2cf-7193-406c-8243-8436ac2258e9" xlink:to="loc_dei_EntityDomain_dc02c2cf-7193-406c-8243-8436ac2258e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_902ad3e3-8c45-42fe-bc40-69e54e633d57" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_dc02c2cf-7193-406c-8243-8436ac2258e9" xlink:to="loc_dei_EntityDomain_902ad3e3-8c45-42fe-bc40-69e54e633d57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_471abb2e-8c00-430b-91f3-e56000468b52" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_902ad3e3-8c45-42fe-bc40-69e54e633d57" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_471abb2e-8c00-430b-91f3-e56000468b52" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_91e9026a-15d9-44cc-af88-714415cfbb01" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_b1d89c96-3fde-4bed-b857-8af17c1c00f3" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_91e9026a-15d9-44cc-af88-714415cfbb01" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_91e9026a-15d9-44cc-af88-714415cfbb01_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_91e9026a-15d9-44cc-af88-714415cfbb01" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_91e9026a-15d9-44cc-af88-714415cfbb01_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_91e9026a-15d9-44cc-af88-714415cfbb01" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredDerivativeGainsCurrentMember_cf67b9dd-7d24-4984-8652-4b2d42102a37" xlink:href="ed-20221231.xsd#ed_DeferredDerivativeGainsCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:to="loc_ed_DeferredDerivativeGainsCurrentMember_cf67b9dd-7d24-4984-8652-4b2d42102a37" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredDerivativeGainsNonCurrentMember_7614fad1-7074-4780-8b85-585e45f041a9" xlink:href="ed-20221231.xsd#ed_DeferredDerivativeGainsNonCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:to="loc_ed_DeferredDerivativeGainsNonCurrentMember_7614fad1-7074-4780-8b85-585e45f041a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DeferredDerivativeLossesCurrentMember_957386c6-afb5-4009-a6d3-f5130d524159" xlink:href="ed-20221231.xsd#ed_DeferredDerivativeLossesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:to="loc_ed_DeferredDerivativeLossesCurrentMember_957386c6-afb5-4009-a6d3-f5130d524159" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RecoverableEnergyCostsMember_d128da6f-f16b-429e-af82-bbb4b52f5380" xlink:href="ed-20221231.xsd#ed_RecoverableEnergyCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:to="loc_ed_RecoverableEnergyCostsMember_d128da6f-f16b-429e-af82-bbb4b52f5380" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RegulatoryAssetsNonCurrentMember_4bf2a5bd-c380-4a40-ad3f-184259748b54" xlink:href="ed-20221231.xsd#ed_RegulatoryAssetsNonCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_851e1d05-bce4-48a6-a589-4da6bf5d9504" xlink:to="loc_ed_RegulatoryAssetsNonCurrentMember_4bf2a5bd-c380-4a40-ad3f-184259748b54" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_c959b922-4c71-4fde-8db2-570d8fff7516" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_b1d89c96-3fde-4bed-b857-8af17c1c00f3" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_c959b922-4c71-4fde-8db2-570d8fff7516" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_c959b922-4c71-4fde-8db2-570d8fff7516_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_c959b922-4c71-4fde-8db2-570d8fff7516" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_c959b922-4c71-4fde-8db2-570d8fff7516_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_c193e0bf-ddcc-4e17-b0a1-5071779b8c4c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_c959b922-4c71-4fde-8db2-570d8fff7516" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_c193e0bf-ddcc-4e17-b0a1-5071779b8c4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasPurchasedForResaleMember_2055fdae-13f5-466c-a0d6-aba3bb9f3094" xlink:href="ed-20221231.xsd#ed_GasPurchasedForResaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c193e0bf-ddcc-4e17-b0a1-5071779b8c4c" xlink:to="loc_ed_GasPurchasedForResaleMember_2055fdae-13f5-466c-a0d6-aba3bb9f3094" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherOperationsAndMaintenanceExpenseMember_09608093-731d-49c4-b814-c9c49a0c7b20" xlink:href="ed-20221231.xsd#ed_OtherOperationsAndMaintenanceExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c193e0bf-ddcc-4e17-b0a1-5071779b8c4c" xlink:to="loc_ed_OtherOperationsAndMaintenanceExpenseMember_09608093-731d-49c4-b814-c9c49a0c7b20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_InterestExpenseIncomeOtherNetMember_13dd65df-29ca-4a83-903c-124168683243" xlink:href="ed-20221231.xsd#ed_InterestExpenseIncomeOtherNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c193e0bf-ddcc-4e17-b0a1-5071779b8c4c" xlink:to="loc_ed_InterestExpenseIncomeOtherNetMember_13dd65df-29ca-4a83-903c-124168683243" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NonUtilityProductsAndServicesMember_2d4e4296-ab10-4fe1-a3f4-983ccbb1af83" xlink:href="ed-20221231.xsd#ed_NonUtilityProductsAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_c193e0bf-ddcc-4e17-b0a1-5071779b8c4c" xlink:to="loc_ed_NonUtilityProductsAndServicesMember_2d4e4296-ab10-4fe1-a3f4-983ccbb1af83" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_7b4b0728-6ba4-4ddd-be88-8f9accc830d8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_b1d89c96-3fde-4bed-b857-8af17c1c00f3" xlink:to="loc_srt_ProductOrServiceAxis_7b4b0728-6ba4-4ddd-be88-8f9accc830d8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_7b4b0728-6ba4-4ddd-be88-8f9accc830d8_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_7b4b0728-6ba4-4ddd-be88-8f9accc830d8" xlink:to="loc_srt_ProductsAndServicesDomain_7b4b0728-6ba4-4ddd-be88-8f9accc830d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b946d2ce-0ea1-4517-93f9-4d01e0018032" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_7b4b0728-6ba4-4ddd-be88-8f9accc830d8" xlink:to="loc_srt_ProductsAndServicesDomain_b946d2ce-0ea1-4517-93f9-4d01e0018032" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GasPurchasedForResaleMember_ba31e5cb-22bb-4814-aef2-47334dca5772" xlink:href="ed-20221231.xsd#ed_GasPurchasedForResaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_b946d2ce-0ea1-4517-93f9-4d01e0018032" xlink:to="loc_ed_GasPurchasedForResaleMember_ba31e5cb-22bb-4814-aef2-47334dca5772" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OtherOperationsAndMaintenanceExpenseMember_35d76a97-05a8-4c0b-952b-bc2b36a8bf1b" xlink:href="ed-20221231.xsd#ed_OtherOperationsAndMaintenanceExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_b946d2ce-0ea1-4517-93f9-4d01e0018032" xlink:to="loc_ed_OtherOperationsAndMaintenanceExpenseMember_35d76a97-05a8-4c0b-952b-bc2b36a8bf1b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesHedgedVolumeofDerivativeTransactionsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#DerivativeInstrumentsandHedgingActivitiesHedgedVolumeofDerivativeTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesHedgedVolumeofDerivativeTransactionsDetails" xlink:type="extended" id="i76007b37892544d59df9cca78ed20b88_DerivativeInstrumentsandHedgingActivitiesHedgedVolumeofDerivativeTransactionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_eb538b08-0881-42a6-b190-b2be4198b89a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNonmonetaryNotionalAmount_270f1281-d530-4628-b8a6-a75d90adeb42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeNonmonetaryNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_eb538b08-0881-42a6-b190-b2be4198b89a" xlink:to="loc_us-gaap_DerivativeNonmonetaryNotionalAmount_270f1281-d530-4628-b8a6-a75d90adeb42" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_ad31f9c9-f85c-47cf-a02d-f56f205b0f4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_eb538b08-0881-42a6-b190-b2be4198b89a" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_ad31f9c9-f85c-47cf-a02d-f56f205b0f4a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8734fb73-48f5-486e-a9a4-59d8f0d71ace" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_ad31f9c9-f85c-47cf-a02d-f56f205b0f4a" xlink:to="loc_dei_LegalEntityAxis_8734fb73-48f5-486e-a9a4-59d8f0d71ace" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8734fb73-48f5-486e-a9a4-59d8f0d71ace_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8734fb73-48f5-486e-a9a4-59d8f0d71ace" xlink:to="loc_dei_EntityDomain_8734fb73-48f5-486e-a9a4-59d8f0d71ace_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a26d35ab-d96d-44d5-b122-486da584d354" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8734fb73-48f5-486e-a9a4-59d8f0d71ace" xlink:to="loc_dei_EntityDomain_a26d35ab-d96d-44d5-b122-486da584d354" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d408f66d-1078-4c87-ac74-fc6f25ca8407" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a26d35ab-d96d-44d5-b122-486da584d354" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d408f66d-1078-4c87-ac74-fc6f25ca8407" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_61d1905c-f1bf-428b-b853-3ce03d7ab4e2" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a26d35ab-d96d-44d5-b122-486da584d354" xlink:to="loc_ed_CleanEnergyBusinessesMember_61d1905c-f1bf-428b-b853-3ce03d7ab4e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_b0864c04-4022-4fcb-8906-f072b2d8683b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_ad31f9c9-f85c-47cf-a02d-f56f205b0f4a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_b0864c04-4022-4fcb-8906-f072b2d8683b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b0864c04-4022-4fcb-8906-f072b2d8683b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_b0864c04-4022-4fcb-8906-f072b2d8683b" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b0864c04-4022-4fcb-8906-f072b2d8683b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_32be8a5e-c374-429b-900a-55cc4d4936e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_b0864c04-4022-4fcb-8906-f072b2d8683b" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_32be8a5e-c374-429b-900a-55cc4d4936e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricEnergyDerivativeMember_7311f034-0c81-4116-9104-aa392d9e040a" xlink:href="ed-20221231.xsd#ed_ElectricEnergyDerivativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_32be8a5e-c374-429b-900a-55cc4d4936e9" xlink:to="loc_ed_ElectricEnergyDerivativeMember_7311f034-0c81-4116-9104-aa392d9e040a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricCapacityDerivativeMember_d5da8967-1491-4a61-b114-13018c88110e" xlink:href="ed-20221231.xsd#ed_ElectricCapacityDerivativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_32be8a5e-c374-429b-900a-55cc4d4936e9" xlink:to="loc_ed_ElectricCapacityDerivativeMember_d5da8967-1491-4a61-b114-13018c88110e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NaturalGasDerivativeMember_19e483ed-2d8e-4a35-9006-a12e95dade51" xlink:href="ed-20221231.xsd#ed_NaturalGasDerivativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_32be8a5e-c374-429b-900a-55cc4d4936e9" xlink:to="loc_ed_NaturalGasDerivativeMember_19e483ed-2d8e-4a35-9006-a12e95dade51" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RefinedFuelsMember_36607ef5-0ab5-4a13-bf50-439c743ffcbf" xlink:href="ed-20221231.xsd#ed_RefinedFuelsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_32be8a5e-c374-429b-900a-55cc4d4936e9" xlink:to="loc_ed_RefinedFuelsMember_36607ef5-0ab5-4a13-bf50-439c743ffcbf" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#DerivativeInstrumentsandHedgingActivitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesAdditionalInformationDetails" xlink:type="extended" id="i3bf7b9dc0e444f78abba583e1fcc240b_DerivativeInstrumentsandHedgingActivitiesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentHoldingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditDerivativeMaximumExposureUndiscounted_1a17db1d-2728-46b5-ab85-7044e399637f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditDerivativeMaximumExposureUndiscounted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:to="loc_us-gaap_CreditDerivativeMaximumExposureUndiscounted_1a17db1d-2728-46b5-ab85-7044e399637f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CreditExposureIndependentSystemOperators_28967f50-da71-4758-8034-9555883e34d8" xlink:href="ed-20221231.xsd#ed_CreditExposureIndependentSystemOperators"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:to="loc_ed_CreditExposureIndependentSystemOperators_28967f50-da71-4758-8034-9555883e34d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MaximumPotentialFutureExposureOnCreditRiskDerivativesWithInvestmentGradeCounterparties_38505616-b7f9-4a18-a95f-7c4e06c699bc" xlink:href="ed-20221231.xsd#ed_MaximumPotentialFutureExposureOnCreditRiskDerivativesWithInvestmentGradeCounterparties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:to="loc_ed_MaximumPotentialFutureExposureOnCreditRiskDerivativesWithInvestmentGradeCounterparties_38505616-b7f9-4a18-a95f-7c4e06c699bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CreditExposureNonratedCounterParties_105a5e8e-bfc5-4498-b761-b2188bff3760" xlink:href="ed-20221231.xsd#ed_CreditExposureNonratedCounterParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:to="loc_ed_CreditExposureNonratedCounterParties_105a5e8e-bfc5-4498-b761-b2188bff3760" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MaximumPotentialFutureExposureOnCreditRiskDerivativesWithCommodityExchangeBrokers_1f983b4f-db3e-492b-9773-6d591d04d5ac" xlink:href="ed-20221231.xsd#ed_MaximumPotentialFutureExposureOnCreditRiskDerivativesWithCommodityExchangeBrokers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:to="loc_ed_MaximumPotentialFutureExposureOnCreditRiskDerivativesWithCommodityExchangeBrokers_1f983b4f-db3e-492b-9773-6d591d04d5ac" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentHoldingsTable_e20b8a49-c93b-41c1-9381-f9adb90ff15a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentHoldingsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InvestmentHoldingsLineItems_22eb9f6e-2ab9-4eb5-a01c-a0017b035a4b" xlink:to="loc_us-gaap_InvestmentHoldingsTable_e20b8a49-c93b-41c1-9381-f9adb90ff15a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_64ba3d3b-ef25-4050-b22e-0e685640695c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InvestmentHoldingsTable_e20b8a49-c93b-41c1-9381-f9adb90ff15a" xlink:to="loc_dei_LegalEntityAxis_64ba3d3b-ef25-4050-b22e-0e685640695c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_64ba3d3b-ef25-4050-b22e-0e685640695c_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_64ba3d3b-ef25-4050-b22e-0e685640695c" xlink:to="loc_dei_EntityDomain_64ba3d3b-ef25-4050-b22e-0e685640695c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_60cbae7c-9ad0-4686-8619-e89baf337732" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_64ba3d3b-ef25-4050-b22e-0e685640695c" xlink:to="loc_dei_EntityDomain_60cbae7c-9ad0-4686-8619-e89baf337732" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_abf1dc2b-30f9-49e7-a330-8d14327d494c" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_60cbae7c-9ad0-4686-8619-e89baf337732" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_abf1dc2b-30f9-49e7-a330-8d14327d494c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_fb34df42-bb90-45b7-bac7-d3bbfb9b0d46" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_60cbae7c-9ad0-4686-8619-e89baf337732" xlink:to="loc_ed_CleanEnergyBusinessesMember_fb34df42-bb90-45b7-bac7-d3bbfb9b0d46" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesAggregateFairValueofCompaniesDerivativeInstrumentswithCreditRiskRelatedContingentFeaturesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#DerivativeInstrumentsandHedgingActivitiesAggregateFairValueofCompaniesDerivativeInstrumentswithCreditRiskRelatedContingentFeaturesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/DerivativeInstrumentsandHedgingActivitiesAggregateFairValueofCompaniesDerivativeInstrumentswithCreditRiskRelatedContingentFeaturesDetails" xlink:type="extended" id="ic9768d507e0e475da9c0351e45ec7628_DerivativeInstrumentsandHedgingActivitiesAggregateFairValueofCompaniesDerivativeInstrumentswithCreditRiskRelatedContingentFeaturesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_4a982066-8af0-4f45-98e2-7bfc86289204" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditRiskDerivativesAtFairValueNet_c56e8d47-e5d9-4e65-9deb-ed0d86d71785" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditRiskDerivativesAtFairValueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_4a982066-8af0-4f45-98e2-7bfc86289204" xlink:to="loc_us-gaap_CreditRiskDerivativesAtFairValueNet_c56e8d47-e5d9-4e65-9deb-ed0d86d71785" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_4321f4f0-bef4-435c-9f98-2a5f10ff742a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CollateralAlreadyPostedAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_4a982066-8af0-4f45-98e2-7bfc86289204" xlink:to="loc_us-gaap_CollateralAlreadyPostedAggregateFairValue_4321f4f0-bef4-435c-9f98-2a5f10ff742a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalCollateralAggregateFairValue_fa4a8f63-69a2-4072-8d80-2ddd0821d3d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalCollateralAggregateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_4a982066-8af0-4f45-98e2-7bfc86289204" xlink:to="loc_us-gaap_AdditionalCollateralAggregateFairValue_fa4a8f63-69a2-4072-8d80-2ddd0821d3d1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AdditionalCollateralForDerivativeNetAssets_fe9633ff-59ff-4d85-875b-db96780e3a8c" xlink:href="ed-20221231.xsd#ed_AdditionalCollateralForDerivativeNetAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_4a982066-8af0-4f45-98e2-7bfc86289204" xlink:to="loc_ed_AdditionalCollateralForDerivativeNetAssets_fe9633ff-59ff-4d85-875b-db96780e3a8c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_c99516e6-1ec4-4030-8a1d-318e5e17563b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_4a982066-8af0-4f45-98e2-7bfc86289204" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_c99516e6-1ec4-4030-8a1d-318e5e17563b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_312a812f-56b8-4172-9100-8959e1d7963d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_c99516e6-1ec4-4030-8a1d-318e5e17563b" xlink:to="loc_dei_LegalEntityAxis_312a812f-56b8-4172-9100-8959e1d7963d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_312a812f-56b8-4172-9100-8959e1d7963d_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_312a812f-56b8-4172-9100-8959e1d7963d" xlink:to="loc_dei_EntityDomain_312a812f-56b8-4172-9100-8959e1d7963d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d1cb2cbc-fb83-4068-84cc-85947a41488e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_312a812f-56b8-4172-9100-8959e1d7963d" xlink:to="loc_dei_EntityDomain_d1cb2cbc-fb83-4068-84cc-85947a41488e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_9ce011ac-12fa-4e8e-aab4-249de75ce472" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d1cb2cbc-fb83-4068-84cc-85947a41488e" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_9ce011ac-12fa-4e8e-aab4-249de75ce472" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_014edd60-232d-4a34-87b6-49a77f1c3f5a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_c99516e6-1ec4-4030-8a1d-318e5e17563b" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_014edd60-232d-4a34-87b6-49a77f1c3f5a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_014edd60-232d-4a34-87b6-49a77f1c3f5a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_014edd60-232d-4a34-87b6-49a77f1c3f5a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_014edd60-232d-4a34-87b6-49a77f1c3f5a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_703fff9f-da83-488b-b247-da0d0bcfcf90" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_014edd60-232d-4a34-87b6-49a77f1c3f5a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_703fff9f-da83-488b-b247-da0d0bcfcf90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AdditionalCollateralAggregateFairValueDownOneLevelMember_1b88e5c3-4ce5-4a13-a534-e605e9e590dc" xlink:href="ed-20221231.xsd#ed_AdditionalCollateralAggregateFairValueDownOneLevelMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_703fff9f-da83-488b-b247-da0d0bcfcf90" xlink:to="loc_ed_AdditionalCollateralAggregateFairValueDownOneLevelMember_1b88e5c3-4ce5-4a13-a534-e605e9e590dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AdditionalCollateralAggregateFairValueDownBelowInvestmentGradeMember_c40959e2-b2fd-4140-9fe1-2aa9ffb30004" xlink:href="ed-20221231.xsd#ed_AdditionalCollateralAggregateFairValueDownBelowInvestmentGradeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_703fff9f-da83-488b-b247-da0d0bcfcf90" xlink:to="loc_ed_AdditionalCollateralAggregateFairValueDownBelowInvestmentGradeMember_c40959e2-b2fd-4140-9fe1-2aa9ffb30004" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AdditionalCollateralRequiredDueToLossOfUnsecuredCreditMember_35d4a03f-2ef0-4bfb-b0e5-2ae00422c226" xlink:href="ed-20221231.xsd#ed_AdditionalCollateralRequiredDueToLossOfUnsecuredCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_703fff9f-da83-488b-b247-da0d0bcfcf90" xlink:to="loc_ed_AdditionalCollateralRequiredDueToLossOfUnsecuredCreditMember_35d4a03f-2ef0-4bfb-b0e5-2ae00422c226" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails" xlink:type="extended" id="i840b0682f0744d72ad7eec63aadeeb84_FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_e0a205f7-734e-4167-9d1c-dd3da762f5a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_DerivativeAssets_e0a205f7-734e-4167-9d1c-dd3da762f5a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_4ac534b7-cc6f-497a-96e4-dd6f46eb0474" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_4ac534b7-cc6f-497a-96e4-dd6f46eb0474" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_3e60b29f-f9e8-4cee-a5f8-cc28c069fab1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_DerivativeLiabilities_3e60b29f-f9e8-4cee-a5f8-cc28c069fab1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_023ace51-e60d-4f4e-a2d8-b32468e28711" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_023ace51-e60d-4f4e-a2d8-b32468e28711" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3_6bb96bb5-eb56-44cb-8148-3f74e39084dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3_6bb96bb5-eb56-44cb-8148-3f74e39084dc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3_ec799a99-7702-4276-a9a7-1307d65e6c55" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3_ec799a99-7702-4276-a9a7-1307d65e6c55" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTermOfContract_4f5919b6-1e14-48f3-9310-e80549bdb66b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_DerivativeTermOfContract_4f5919b6-1e14-48f3-9310-e80549bdb66b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4b851779-e838-4ade-80b1-a78ee7272677" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ae1fcb95-af3c-48b0-a129-e63d779dd6c7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ae1fcb95-af3c-48b0-a129-e63d779dd6c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_ae1fcb95-af3c-48b0-a129-e63d779dd6c7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ae1fcb95-af3c-48b0-a129-e63d779dd6c7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_ae1fcb95-af3c-48b0-a129-e63d779dd6c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_eb790aed-0c69-4f4d-8bd1-9936c7575caa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ae1fcb95-af3c-48b0-a129-e63d779dd6c7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_eb790aed-0c69-4f4d-8bd1-9936c7575caa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_49a02a53-9e23-49a9-98d1-af3f255e1793" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_eb790aed-0c69-4f4d-8bd1-9936c7575caa" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_49a02a53-9e23-49a9-98d1-af3f255e1793" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_a83e938e-717f-4e10-9721-26c6a6f4f8b2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_a83e938e-717f-4e10-9721-26c6a6f4f8b2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_a83e938e-717f-4e10-9721-26c6a6f4f8b2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a83e938e-717f-4e10-9721-26c6a6f4f8b2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_a83e938e-717f-4e10-9721-26c6a6f4f8b2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_7d15aac2-fa16-4e75-8ae0-5330fff85747" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a83e938e-717f-4e10-9721-26c6a6f4f8b2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_7d15aac2-fa16-4e75-8ae0-5330fff85747" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FairValueCommodityMember_c3b45e81-e028-48af-90b3-ac5ea0c5d6d2" xlink:href="ed-20221231.xsd#ed_FairValueCommodityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7d15aac2-fa16-4e75-8ae0-5330fff85747" xlink:to="loc_ed_FairValueCommodityMember_c3b45e81-e028-48af-90b3-ac5ea0c5d6d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FairValueCommodityHeldForSaleMember_4e57ba71-0ea7-4e63-a540-eaab0eb04bdd" xlink:href="ed-20221231.xsd#ed_FairValueCommodityHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7d15aac2-fa16-4e75-8ae0-5330fff85747" xlink:to="loc_ed_FairValueCommodityHeldForSaleMember_4e57ba71-0ea7-4e63-a540-eaab0eb04bdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_b65d850b-7e1c-4eab-8c52-890253eb9820" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7d15aac2-fa16-4e75-8ae0-5330fff85747" xlink:to="loc_us-gaap_InterestRateSwapMember_b65d850b-7e1c-4eab-8c52-890253eb9820" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FairValueOtherMember_883a5172-14cb-4fc9-a4ef-4bdd1e84cd57" xlink:href="ed-20221231.xsd#ed_FairValueOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7d15aac2-fa16-4e75-8ae0-5330fff85747" xlink:to="loc_ed_FairValueOtherMember_883a5172-14cb-4fc9-a4ef-4bdd1e84cd57" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f4965c6a-9388-4f54-9ab4-5d71e186f2a4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f4965c6a-9388-4f54-9ab4-5d71e186f2a4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f4965c6a-9388-4f54-9ab4-5d71e186f2a4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f4965c6a-9388-4f54-9ab4-5d71e186f2a4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f4965c6a-9388-4f54-9ab4-5d71e186f2a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_79b40dc8-da3b-4cef-b3b5-14817337fe0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f4965c6a-9388-4f54-9ab4-5d71e186f2a4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_79b40dc8-da3b-4cef-b3b5-14817337fe0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_f57b86ce-2cb5-4bfe-91a1-bb772c294ad7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_79b40dc8-da3b-4cef-b3b5-14817337fe0b" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_f57b86ce-2cb5-4bfe-91a1-bb772c294ad7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_ff718cf4-2240-4762-a093-6665829c0c5e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_79b40dc8-da3b-4cef-b3b5-14817337fe0b" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_ff718cf4-2240-4762-a093-6665829c0c5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_dd66dd6d-558f-4a0c-8bce-4fd76193b299" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_79b40dc8-da3b-4cef-b3b5-14817337fe0b" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_dd66dd6d-558f-4a0c-8bce-4fd76193b299" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_6d3a0745-f34c-47f6-a7e7-bc431c370b29" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_6d3a0745-f34c-47f6-a7e7-bc431c370b29" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_6d3a0745-f34c-47f6-a7e7-bc431c370b29_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_6d3a0745-f34c-47f6-a7e7-bc431c370b29" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_6d3a0745-f34c-47f6-a7e7-bc431c370b29_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_72f700e3-5886-433e-8151-8459a2159044" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsAxis_6d3a0745-f34c-47f6-a7e7-bc431c370b29" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_72f700e3-5886-433e-8151-8459a2159044" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfCreditRiskMasterNettingArrangementsMember_b7494d3f-8610-40c0-9206-f170a9adb80b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueConcentrationOfCreditRiskMasterNettingArrangementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskDisclosureItemsDomain_72f700e3-5886-433e-8151-8459a2159044" xlink:to="loc_us-gaap_FairValueConcentrationOfCreditRiskMasterNettingArrangementsMember_b7494d3f-8610-40c0-9206-f170a9adb80b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_27c67174-4b9e-4825-bdc7-555bd1a9893d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:to="loc_dei_LegalEntityAxis_27c67174-4b9e-4825-bdc7-555bd1a9893d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_27c67174-4b9e-4825-bdc7-555bd1a9893d_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_27c67174-4b9e-4825-bdc7-555bd1a9893d" xlink:to="loc_dei_EntityDomain_27c67174-4b9e-4825-bdc7-555bd1a9893d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2b26c56c-c855-43b5-be3d-2c9678465904" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_27c67174-4b9e-4825-bdc7-555bd1a9893d" xlink:to="loc_dei_EntityDomain_2b26c56c-c855-43b5-be3d-2c9678465904" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_50c1ab64-a744-46f9-8c26-ce99dee5a087" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2b26c56c-c855-43b5-be3d-2c9678465904" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_50c1ab64-a744-46f9-8c26-ce99dee5a087" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_ab5beb9a-fc3e-4e44-b06a-aff080bc5b67" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1ecaaa89-3c5c-449c-960b-6db1060aec5a" xlink:to="loc_srt_RangeAxis_ab5beb9a-fc3e-4e44-b06a-aff080bc5b67" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ab5beb9a-fc3e-4e44-b06a-aff080bc5b67_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_ab5beb9a-fc3e-4e44-b06a-aff080bc5b67" xlink:to="loc_srt_RangeMember_ab5beb9a-fc3e-4e44-b06a-aff080bc5b67_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_58b7e4c2-56dd-4a8d-ba78-724bbc8feece" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_ab5beb9a-fc3e-4e44-b06a-aff080bc5b67" xlink:to="loc_srt_RangeMember_58b7e4c2-56dd-4a8d-ba78-724bbc8feece" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_a3d418de-2d9f-4086-8589-41220b28f12d" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_58b7e4c2-56dd-4a8d-ba78-724bbc8feece" xlink:to="loc_srt_MinimumMember_a3d418de-2d9f-4086-8589-41220b28f12d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f45941b9-106e-407b-9e3f-7c76a57357cb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_58b7e4c2-56dd-4a8d-ba78-724bbc8feece" xlink:to="loc_srt_MaximumMember_f45941b9-106e-407b-9e3f-7c76a57357cb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/FairValueMeasurementsScheduleofCommodityDerivativesDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#FairValueMeasurementsScheduleofCommodityDerivativesDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/FairValueMeasurementsScheduleofCommodityDerivativesDetails" xlink:type="extended" id="ie7f3bc113a5a4d1db548e5bad1097815_FairValueMeasurementsScheduleofCommodityDerivativesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_4d433927-177f-4fd5-a3a4-b21fe4882c17" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_c1e8f4f7-837e-47a1-abb6-a4185aefc55a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_4d433927-177f-4fd5-a3a4-b21fe4882c17" xlink:to="loc_us-gaap_DerivativeAssets_c1e8f4f7-837e-47a1-abb6-a4185aefc55a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetMeasurementInput_fad80c2f-174c-4592-ae23-4eef851052cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeAssetMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_4d433927-177f-4fd5-a3a4-b21fe4882c17" xlink:to="loc_us-gaap_DerivativeAssetMeasurementInput_fad80c2f-174c-4592-ae23-4eef851052cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueConcentrationOfRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_4d433927-177f-4fd5-a3a4-b21fe4882c17" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_4708d9e3-be5f-4a07-97b9-ae2cd69deaa5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_4708d9e3-be5f-4a07-97b9-ae2cd69deaa5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4708d9e3-be5f-4a07-97b9-ae2cd69deaa5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_4708d9e3-be5f-4a07-97b9-ae2cd69deaa5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4708d9e3-be5f-4a07-97b9-ae2cd69deaa5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6fb88758-43ff-40c3-94cc-bda1709b27da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_4708d9e3-be5f-4a07-97b9-ae2cd69deaa5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6fb88758-43ff-40c3-94cc-bda1709b27da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_12437e4d-dec2-4f33-9494-a78edec34819" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6fb88758-43ff-40c3-94cc-bda1709b27da" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_12437e4d-dec2-4f33-9494-a78edec34819" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_c2bc84f0-4f77-44b8-aca6-8ff93994105d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_c2bc84f0-4f77-44b8-aca6-8ff93994105d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c2bc84f0-4f77-44b8-aca6-8ff93994105d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_c2bc84f0-4f77-44b8-aca6-8ff93994105d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c2bc84f0-4f77-44b8-aca6-8ff93994105d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_c2bc84f0-4f77-44b8-aca6-8ff93994105d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricitySwapsMember_8e810f03-3932-4e73-8936-b7f588575d66" xlink:href="ed-20221231.xsd#ed_ElectricitySwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_ElectricitySwapsMember_8e810f03-3932-4e73-8936-b7f588575d66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TransmissionCongestionContractsOrFinancialTransmissionRightsMember_399ae321-61f0-4705-b8a9-75e285c7470f" xlink:href="ed-20221231.xsd#ed_TransmissionCongestionContractsOrFinancialTransmissionRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_TransmissionCongestionContractsOrFinancialTransmissionRightsMember_399ae321-61f0-4705-b8a9-75e285c7470f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommodityContractHeldAndUsedMember_073a280c-32a3-4902-8128-f0e3c3580733" xlink:href="ed-20221231.xsd#ed_CommodityContractHeldAndUsedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_CommodityContractHeldAndUsedMember_073a280c-32a3-4902-8128-f0e3c3580733" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ElectricitySwapsHeldForSaleMember_97777727-d8fe-45b6-92aa-f37ed1dcefe3" xlink:href="ed-20221231.xsd#ed_ElectricitySwapsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_ElectricitySwapsHeldForSaleMember_97777727-d8fe-45b6-92aa-f37ed1dcefe3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TransmissionCongestionContractsOrFinancialTransmissionRightsHeldForSaleMember_82420a75-b581-4210-a935-3daf46f25de1" xlink:href="ed-20221231.xsd#ed_TransmissionCongestionContractsOrFinancialTransmissionRightsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_TransmissionCongestionContractsOrFinancialTransmissionRightsHeldForSaleMember_82420a75-b581-4210-a935-3daf46f25de1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NaturalGasHeldForSaleMember_6918dec1-caec-45a5-bd8d-656ed21973de" xlink:href="ed-20221231.xsd#ed_NaturalGasHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_NaturalGasHeldForSaleMember_6918dec1-caec-45a5-bd8d-656ed21973de" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommodityContractHeldForSaleMember_baf01ce6-5e55-4195-bb03-4352e3212579" xlink:href="ed-20221231.xsd#ed_CommodityContractHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_CommodityContractHeldForSaleMember_baf01ce6-5e55-4195-bb03-4352e3212579" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_1c390d01-c58c-4d8a-9949-acb501513d8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_us-gaap_CommodityContractMember_1c390d01-c58c-4d8a-9949-acb501513d8c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TransmissionCongestionContractsMember_2a470aae-df27-4dd4-ac37-7b66b79ba8cb" xlink:href="ed-20221231.xsd#ed_TransmissionCongestionContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7ebfdbb8-463e-4dab-af3e-122eff483281" xlink:to="loc_ed_TransmissionCongestionContractsMember_2a470aae-df27-4dd4-ac37-7b66b79ba8cb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_1f576ca6-8489-4ce7-9f09-4bff0948d3e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_1f576ca6-8489-4ce7-9f09-4bff0948d3e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_1f576ca6-8489-4ce7-9f09-4bff0948d3e2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_1f576ca6-8489-4ce7-9f09-4bff0948d3e2" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_1f576ca6-8489-4ce7-9f09-4bff0948d3e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_9f8ca1d6-1c3e-4857-a2eb-66f73fdd0da7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_1f576ca6-8489-4ce7-9f09-4bff0948d3e2" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_9f8ca1d6-1c3e-4857-a2eb-66f73fdd0da7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MeasurementInputCommodityForwardEnergyPriceMember_50028b05-ea4d-4ad5-b986-fef39c7b335b" xlink:href="ed-20221231.xsd#ed_MeasurementInputCommodityForwardEnergyPriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_9f8ca1d6-1c3e-4857-a2eb-66f73fdd0da7" xlink:to="loc_ed_MeasurementInputCommodityForwardEnergyPriceMember_50028b05-ea4d-4ad5-b986-fef39c7b335b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MeasurementInputCommodityForwardCapacityPriceMember_3f49c8c7-3fe2-4c98-9b78-623ec9f7bb1d" xlink:href="ed-20221231.xsd#ed_MeasurementInputCommodityForwardCapacityPriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_9f8ca1d6-1c3e-4857-a2eb-66f73fdd0da7" xlink:to="loc_ed_MeasurementInputCommodityForwardCapacityPriceMember_3f49c8c7-3fe2-4c98-9b78-623ec9f7bb1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MeasurementInputCommodityInterZonalForwardPriceCurveMember_963dad2a-ca17-4246-9216-6e92716ccda1" xlink:href="ed-20221231.xsd#ed_MeasurementInputCommodityInterZonalForwardPriceCurveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_9f8ca1d6-1c3e-4857-a2eb-66f73fdd0da7" xlink:to="loc_ed_MeasurementInputCommodityInterZonalForwardPriceCurveMember_963dad2a-ca17-4246-9216-6e92716ccda1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MeasurementInputCommodityForwardNaturalGasPriceMember_7572be81-1ece-4053-8414-fbee54d7778d" xlink:href="ed-20221231.xsd#ed_MeasurementInputCommodityForwardNaturalGasPriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_9f8ca1d6-1c3e-4857-a2eb-66f73fdd0da7" xlink:to="loc_ed_MeasurementInputCommodityForwardNaturalGasPriceMember_7572be81-1ece-4053-8414-fbee54d7778d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_f83da391-34c0-4842-9413-385697670809" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:to="loc_srt_RangeAxis_f83da391-34c0-4842-9413-385697670809" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f83da391-34c0-4842-9413-385697670809_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_f83da391-34c0-4842-9413-385697670809" xlink:to="loc_srt_RangeMember_f83da391-34c0-4842-9413-385697670809_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c1088e26-727c-4418-992b-54ea60cb24a3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_f83da391-34c0-4842-9413-385697670809" xlink:to="loc_srt_RangeMember_c1088e26-727c-4418-992b-54ea60cb24a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_92cb7a6a-7767-4743-8884-5bd6718da16c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c1088e26-727c-4418-992b-54ea60cb24a3" xlink:to="loc_srt_MinimumMember_92cb7a6a-7767-4743-8884-5bd6718da16c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_86c906c1-6666-443e-a9a3-47abfebd406d" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c1088e26-727c-4418-992b-54ea60cb24a3" xlink:to="loc_srt_MaximumMember_86c906c1-6666-443e-a9a3-47abfebd406d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_61e91adc-c45f-46b1-97b0-c86be591c767" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_a4696dfb-b0d9-429f-83a3-928412bddd67" xlink:to="loc_dei_LegalEntityAxis_61e91adc-c45f-46b1-97b0-c86be591c767" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_61e91adc-c45f-46b1-97b0-c86be591c767_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_61e91adc-c45f-46b1-97b0-c86be591c767" xlink:to="loc_dei_EntityDomain_61e91adc-c45f-46b1-97b0-c86be591c767_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ebba0843-4fb3-4ac1-ad45-671caddd0e1c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_61e91adc-c45f-46b1-97b0-c86be591c767" xlink:to="loc_dei_EntityDomain_ebba0843-4fb3-4ac1-ad45-671caddd0e1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_27df1e31-fa04-4914-9edc-f06e1937019c" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ebba0843-4fb3-4ac1-ad45-671caddd0e1c" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_27df1e31-fa04-4914-9edc-f06e1937019c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/FairValueMeasurementsReconciliationofBeginningandEndingNetBalancesforAssetsandLiabilitiesMeasuredatLevel3FairValueDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#FairValueMeasurementsReconciliationofBeginningandEndingNetBalancesforAssetsandLiabilitiesMeasuredatLevel3FairValueDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/FairValueMeasurementsReconciliationofBeginningandEndingNetBalancesforAssetsandLiabilitiesMeasuredatLevel3FairValueDetails" xlink:type="extended" id="i5f8840d012d445bdaf3e5b80cb559851_FairValueMeasurementsReconciliationofBeginningandEndingNetBalancesforAssetsandLiabilitiesMeasuredatLevel3FairValueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_c3cb24bf-f529-422d-b072-4e0965e40ea9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_c3cb24bf-f529-422d-b072-4e0965e40ea9" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_f08e5df2-e89f-4c3e-94c3-ecf04853f721" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_f08e5df2-e89f-4c3e-94c3-ecf04853f721" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings_4aa00252-a353-4972-a884-329f1e002c31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings_4aa00252-a353-4972-a884-329f1e002c31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainLossIncludedinRegulatoryAssetsandLiabilities_a2d45b2f-839d-4f69-8456-00e2b987c6b8" xlink:href="ed-20221231.xsd#ed_FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainLossIncludedinRegulatoryAssetsandLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_ed_FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainLossIncludedinRegulatoryAssetsandLiabilities_a2d45b2f-839d-4f69-8456-00e2b987c6b8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases_01162e94-3347-4116-ab8d-192c92730410" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases_01162e94-3347-4116-ab8d-192c92730410" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_51a17465-49c6-4311-aee1-f6c3efa11607" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_51a17465-49c6-4311-aee1-f6c3efa11607" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease_4e57fc84-daeb-4e05-9936-5c83e7d1b46c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease_4e57fc84-daeb-4e05-9936-5c83e7d1b46c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3_59b5a396-a7a2-4d6e-bd34-25b91356067a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7030a431-372d-473c-8a57-7fd300ebdbd8" xlink:to="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3_59b5a396-a7a2-4d6e-bd34-25b91356067a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_8f2d2730-415a-4a2b-a261-5f05ad92a14e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_7fc903bf-8f39-4890-928d-c88c39c7eccb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_c3cb24bf-f529-422d-b072-4e0965e40ea9" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_7fc903bf-8f39-4890-928d-c88c39c7eccb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_055c82de-79b5-4be3-88d1-f971ec9ab2b6" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_7fc903bf-8f39-4890-928d-c88c39c7eccb" xlink:to="loc_dei_LegalEntityAxis_055c82de-79b5-4be3-88d1-f971ec9ab2b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_055c82de-79b5-4be3-88d1-f971ec9ab2b6_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_055c82de-79b5-4be3-88d1-f971ec9ab2b6" xlink:to="loc_dei_EntityDomain_055c82de-79b5-4be3-88d1-f971ec9ab2b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_994e3fc7-c513-41f1-9018-e59dc60f8f87" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_055c82de-79b5-4be3-88d1-f971ec9ab2b6" xlink:to="loc_dei_EntityDomain_994e3fc7-c513-41f1-9018-e59dc60f8f87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c95e8f78-3d81-4eab-b512-c30fbf9e7e58" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_994e3fc7-c513-41f1-9018-e59dc60f8f87" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_c95e8f78-3d81-4eab-b512-c30fbf9e7e58" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#FairValueMeasurementsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="extended" id="ifdc8fbdb745e411887f8f64c49cd00b5_FairValueMeasurementsAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_80c81f8b-bc19-4c70-9914-7e6a026afe38" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_1a0706c0-bc0e-4cf8-b91e-e29a589f2a35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_80c81f8b-bc19-4c70-9914-7e6a026afe38" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_1a0706c0-bc0e-4cf8-b91e-e29a589f2a35" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList_b9480451-e878-450c-b810-bbaa94dc0ba7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_80c81f8b-bc19-4c70-9914-7e6a026afe38" xlink:to="loc_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList_b9480451-e878-450c-b810-bbaa94dc0ba7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_d373584f-c97e-4b99-9531-729d8c7468b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_80c81f8b-bc19-4c70-9914-7e6a026afe38" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_d373584f-c97e-4b99-9531-729d8c7468b5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_07c66cbd-cab5-4e31-8809-994365779c78" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_d373584f-c97e-4b99-9531-729d8c7468b5" xlink:to="loc_dei_LegalEntityAxis_07c66cbd-cab5-4e31-8809-994365779c78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_07c66cbd-cab5-4e31-8809-994365779c78_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_07c66cbd-cab5-4e31-8809-994365779c78" xlink:to="loc_dei_EntityDomain_07c66cbd-cab5-4e31-8809-994365779c78_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ba70a4fd-e0da-4be3-be9e-cba1cdef5456" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_07c66cbd-cab5-4e31-8809-994365779c78" xlink:to="loc_dei_EntityDomain_ba70a4fd-e0da-4be3-be9e-cba1cdef5456" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_2eef9795-97c2-4c98-9f0b-85bf90a9ee76" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ba70a4fd-e0da-4be3-be9e-cba1cdef5456" xlink:to="loc_ed_CleanEnergyBusinessesMember_2eef9795-97c2-4c98-9f0b-85bf90a9ee76" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/VariableInterestEntitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#VariableInterestEntitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/VariableInterestEntitiesAdditionalInformationDetails" xlink:type="extended" id="id54c0220915d41fea55a52066b0ae889_VariableInterestEntitiesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_b50ced0a-fbb5-4b28-9c63-dd8a623519b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_b3d49d18-328e-4920-a710-b5b800970b76" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b50ced0a-fbb5-4b28-9c63-dd8a623519b9" xlink:to="loc_us-gaap_EquityMethodInvestments_b3d49d18-328e-4920-a710-b5b800970b76" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncomeLossFromEquityMethodInvestmentsHypotheticalLiquidationAtBookValueBeforeTax_3bdd2bc2-a850-44b6-9ab4-d769b344cfb3" xlink:href="ed-20221231.xsd#ed_IncomeLossFromEquityMethodInvestmentsHypotheticalLiquidationAtBookValueBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b50ced0a-fbb5-4b28-9c63-dd8a623519b9" xlink:to="loc_ed_IncomeLossFromEquityMethodInvestmentsHypotheticalLiquidationAtBookValueBeforeTax_3bdd2bc2-a850-44b6-9ab4-d769b344cfb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncomeLossFromEquityMethodInvestmentsHypotheticalLiquidationAtBookValueNet_50936a35-b491-4949-bd23-40188b479b5e" xlink:href="ed-20221231.xsd#ed_IncomeLossFromEquityMethodInvestmentsHypotheticalLiquidationAtBookValueNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b50ced0a-fbb5-4b28-9c63-dd8a623519b9" xlink:to="loc_ed_IncomeLossFromEquityMethodInvestmentsHypotheticalLiquidationAtBookValueNet_50936a35-b491-4949-bd23-40188b479b5e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityOwnershipPercentage_a56d85c7-546a-43b4-8159-07d45cd78233" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b50ced0a-fbb5-4b28-9c63-dd8a623519b9" xlink:to="loc_us-gaap_VariableInterestEntityOwnershipPercentage_a56d85c7-546a-43b4-8159-07d45cd78233" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_fb6322a6-d79b-4f26-b2ab-52b65d89b234" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b50ced0a-fbb5-4b28-9c63-dd8a623519b9" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_fb6322a6-d79b-4f26-b2ab-52b65d89b234" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b5ef30dd-58c7-4f76-824a-509d2490a243" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_fb6322a6-d79b-4f26-b2ab-52b65d89b234" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b5ef30dd-58c7-4f76-824a-509d2490a243" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_b5ef30dd-58c7-4f76-824a-509d2490a243_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b5ef30dd-58c7-4f76-824a-509d2490a243" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_b5ef30dd-58c7-4f76-824a-509d2490a243_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_fde00998-ba7d-4ab4-9cc6-ee7674c9444e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b5ef30dd-58c7-4f76-824a-509d2490a243" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_fde00998-ba7d-4ab4-9cc6-ee7674c9444e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TexasSolar4Member_7b2e3066-64d6-4a92-877c-5d529dcd2ce0" xlink:href="ed-20221231.xsd#ed_TexasSolar4Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_fde00998-ba7d-4ab4-9cc6-ee7674c9444e" xlink:to="loc_ed_TexasSolar4Member_7b2e3066-64d6-4a92-877c-5d529dcd2ce0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxEquityProjectsMember_18024453-73ba-4d2c-b3e8-1f8a9a95cd9e" xlink:href="ed-20221231.xsd#ed_TaxEquityProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_fde00998-ba7d-4ab4-9cc6-ee7674c9444e" xlink:to="loc_ed_TaxEquityProjectsMember_18024453-73ba-4d2c-b3e8-1f8a9a95cd9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDNevadaVirginiaMember_5966b913-6576-4191-8d99-e0dd1583c4b0" xlink:href="ed-20221231.xsd#ed_CEDNevadaVirginiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_fde00998-ba7d-4ab4-9cc6-ee7674c9444e" xlink:to="loc_ed_CEDNevadaVirginiaMember_5966b913-6576-4191-8d99-e0dd1583c4b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4d0e4cd7-1135-45ed-ab45-1a1edf642816" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_fb6322a6-d79b-4f26-b2ab-52b65d89b234" xlink:to="loc_dei_LegalEntityAxis_4d0e4cd7-1135-45ed-ab45-1a1edf642816" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4d0e4cd7-1135-45ed-ab45-1a1edf642816_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4d0e4cd7-1135-45ed-ab45-1a1edf642816" xlink:to="loc_dei_EntityDomain_4d0e4cd7-1135-45ed-ab45-1a1edf642816_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_60909037-4e6f-44d8-b1e1-f9af979d7e11" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4d0e4cd7-1135-45ed-ab45-1a1edf642816" xlink:to="loc_dei_EntityDomain_60909037-4e6f-44d8-b1e1-f9af979d7e11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonDevelopmentMember_e289fccb-1402-4ff7-86e5-341b40e646b9" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_60909037-4e6f-44d8-b1e1-f9af979d7e11" xlink:to="loc_ed_ConsolidatedEdisonDevelopmentMember_e289fccb-1402-4ff7-86e5-341b40e646b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxEquityInvestorsMember_33e2ee8f-b3c0-46f0-906a-61f653acaa24" xlink:href="ed-20221231.xsd#ed_TaxEquityInvestorsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_60909037-4e6f-44d8-b1e1-f9af979d7e11" xlink:to="loc_ed_TaxEquityInvestorsMember_33e2ee8f-b3c0-46f0-906a-61f653acaa24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_a5878b81-87ac-46de-b4c7-b3dac595f277" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_fb6322a6-d79b-4f26-b2ab-52b65d89b234" xlink:to="loc_srt_ConsolidatedEntitiesAxis_a5878b81-87ac-46de-b4c7-b3dac595f277" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_a5878b81-87ac-46de-b4c7-b3dac595f277_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a5878b81-87ac-46de-b4c7-b3dac595f277" xlink:to="loc_srt_ConsolidatedEntitiesDomain_a5878b81-87ac-46de-b4c7-b3dac595f277_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_d6342e5c-3f22-4d98-be02-2485796bb313" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_a5878b81-87ac-46de-b4c7-b3dac595f277" xlink:to="loc_srt_ConsolidatedEntitiesDomain_d6342e5c-3f22-4d98-be02-2485796bb313" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_ba2c238a-0171-46ed-979b-95b73b3c0e67" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_d6342e5c-3f22-4d98-be02-2485796bb313" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_ba2c238a-0171-46ed-979b-95b73b3c0e67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_90d441ea-02ea-45e4-b0bd-1cc97430c64e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_fb6322a6-d79b-4f26-b2ab-52b65d89b234" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_90d441ea-02ea-45e4-b0bd-1cc97430c64e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_90d441ea-02ea-45e4-b0bd-1cc97430c64e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_90d441ea-02ea-45e4-b0bd-1cc97430c64e" xlink:to="loc_us-gaap_SegmentDomain_90d441ea-02ea-45e4-b0bd-1cc97430c64e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_8694b621-98b1-43ae-9c5a-bc8b0fb51780" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_90d441ea-02ea-45e4-b0bd-1cc97430c64e" xlink:to="loc_us-gaap_SegmentDomain_8694b621-98b1-43ae-9c5a-bc8b0fb51780" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_9092e5eb-932c-41cb-afcc-8fa0ccc2e5e4" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8694b621-98b1-43ae-9c5a-bc8b0fb51780" xlink:to="loc_ed_CleanEnergyBusinessesMember_9092e5eb-932c-41cb-afcc-8fa0ccc2e5e4" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/VariableInterestEntitiesHLVBMethodofAccountingDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#VariableInterestEntitiesHLVBMethodofAccountingDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/VariableInterestEntitiesHLVBMethodofAccountingDetails" xlink:type="extended" id="i13c99876f69b4d13b0427a863c4532fd_VariableInterestEntitiesHLVBMethodofAccountingDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7c0bf8ec-c6ca-4ae0-9a1b-e0c7ac73998b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax_eb0b778c-c2c7-4808-9d87-dd4a926993a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7c0bf8ec-c6ca-4ae0-9a1b-e0c7ac73998b" xlink:to="loc_us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax_eb0b778c-c2c7-4808-9d87-dd4a926993a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_VariableInterestEntityMeasureOfActivityNetIncomeLoss_ddf1c92a-4e77-47db-8ff7-00de616d4cc6" xlink:href="ed-20221231.xsd#ed_VariableInterestEntityMeasureOfActivityNetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7c0bf8ec-c6ca-4ae0-9a1b-e0c7ac73998b" xlink:to="loc_ed_VariableInterestEntityMeasureOfActivityNetIncomeLoss_ddf1c92a-4e77-47db-8ff7-00de616d4cc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_eb46373c-966a-4cd2-b80e-b5147da48595" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7c0bf8ec-c6ca-4ae0-9a1b-e0c7ac73998b" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_eb46373c-966a-4cd2-b80e-b5147da48595" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_78d06cd6-45cf-4d55-a587-1c57ef0dc24f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_eb46373c-966a-4cd2-b80e-b5147da48595" xlink:to="loc_srt_ConsolidatedEntitiesAxis_78d06cd6-45cf-4d55-a587-1c57ef0dc24f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_78d06cd6-45cf-4d55-a587-1c57ef0dc24f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_78d06cd6-45cf-4d55-a587-1c57ef0dc24f" xlink:to="loc_srt_ConsolidatedEntitiesDomain_78d06cd6-45cf-4d55-a587-1c57ef0dc24f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_418716f9-e1a6-4eb3-8f56-6d0f68045f02" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_78d06cd6-45cf-4d55-a587-1c57ef0dc24f" xlink:to="loc_srt_ConsolidatedEntitiesDomain_418716f9-e1a6-4eb3-8f56-6d0f68045f02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_ccbfac32-83c8-46f9-9a95-aacfa31eba64" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_418716f9-e1a6-4eb3-8f56-6d0f68045f02" xlink:to="loc_us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_ccbfac32-83c8-46f9-9a95-aacfa31eba64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_8601be57-5728-4d43-b97a-bf3f72df65a5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_eb46373c-966a-4cd2-b80e-b5147da48595" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_8601be57-5728-4d43-b97a-bf3f72df65a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_8601be57-5728-4d43-b97a-bf3f72df65a5_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_8601be57-5728-4d43-b97a-bf3f72df65a5" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_8601be57-5728-4d43-b97a-bf3f72df65a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_a3cd6687-e950-4a51-80ee-e4f7bf108f08" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_8601be57-5728-4d43-b97a-bf3f72df65a5" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_a3cd6687-e950-4a51-80ee-e4f7bf108f08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDNevadaVirginiaMember_fdca2762-b67b-4984-b232-f6f8995f076a" xlink:href="ed-20221231.xsd#ed_CEDNevadaVirginiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_a3cd6687-e950-4a51-80ee-e4f7bf108f08" xlink:to="loc_ed_CEDNevadaVirginiaMember_fdca2762-b67b-4984-b232-f6f8995f076a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxEquityProjectsMember_534fda10-2044-4cdc-a646-dcbfe130ca5a" xlink:href="ed-20221231.xsd#ed_TaxEquityProjectsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_a3cd6687-e950-4a51-80ee-e4f7bf108f08" xlink:to="loc_ed_TaxEquityProjectsMember_534fda10-2044-4cdc-a646-dcbfe130ca5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_0ae2319e-c7b0-4a95-b3d1-e4dd72ade21e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_eb46373c-966a-4cd2-b80e-b5147da48595" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_0ae2319e-c7b0-4a95-b3d1-e4dd72ade21e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_0ae2319e-c7b0-4a95-b3d1-e4dd72ade21e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0ae2319e-c7b0-4a95-b3d1-e4dd72ade21e" xlink:to="loc_us-gaap_SegmentDomain_0ae2319e-c7b0-4a95-b3d1-e4dd72ade21e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6ed1177c-8a2f-46a0-ad03-a6440655f1ad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0ae2319e-c7b0-4a95-b3d1-e4dd72ade21e" xlink:to="loc_us-gaap_SegmentDomain_6ed1177c-8a2f-46a0-ad03-a6440655f1ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_1193fc91-03f7-4fcc-b085-f58d1e77db6a" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6ed1177c-8a2f-46a0-ad03-a6440655f1ad" xlink:to="loc_ed_CleanEnergyBusinessesMember_1193fc91-03f7-4fcc-b085-f58d1e77db6a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d4620914-caa9-4c09-957a-1c59afdcdb17" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_eb46373c-966a-4cd2-b80e-b5147da48595" xlink:to="loc_dei_LegalEntityAxis_d4620914-caa9-4c09-957a-1c59afdcdb17" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d4620914-caa9-4c09-957a-1c59afdcdb17_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d4620914-caa9-4c09-957a-1c59afdcdb17" xlink:to="loc_dei_EntityDomain_d4620914-caa9-4c09-957a-1c59afdcdb17_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0fd6011d-6543-449a-be34-b7c239f6b71f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d4620914-caa9-4c09-957a-1c59afdcdb17" xlink:to="loc_dei_EntityDomain_0fd6011d-6543-449a-be34-b7c239f6b71f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxEquityInvestorsMember_19b5eddd-4ad5-4014-b738-ec0613ca238f" xlink:href="ed-20221231.xsd#ed_TaxEquityInvestorsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0fd6011d-6543-449a-be34-b7c239f6b71f" xlink:to="loc_ed_TaxEquityInvestorsMember_19b5eddd-4ad5-4014-b738-ec0613ca238f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonDevelopmentMember_ff4ba896-24d2-4f00-8444-874b2e1ec205" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0fd6011d-6543-449a-be34-b7c239f6b71f" xlink:to="loc_ed_ConsolidatedEdisonDevelopmentMember_ff4ba896-24d2-4f00-8444-874b2e1ec205" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/VariableInterestEntitiesNetAssetsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#VariableInterestEntitiesNetAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/VariableInterestEntitiesNetAssetsDetails" xlink:type="extended" id="id4ca453d6cbd43f8a5768a953a2ab4e9_VariableInterestEntitiesNetAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsHeldForSale_9b9d6c34-a27e-4112-aabf-ede481191fb8" xlink:href="ed-20221231.xsd#ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsHeldForSale_9b9d6c34-a27e-4112-aabf-ede481191fb8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumePropertyPlantandEquipmentPropertyPlantandEquipmentNonUtilityPlantNet_2524a906-a8fd-4562-91c0-3e413d49042d" xlink:href="ed-20221231.xsd#ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumePropertyPlantandEquipmentPropertyPlantandEquipmentNonUtilityPlantNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumePropertyPlantandEquipmentPropertyPlantandEquipmentNonUtilityPlantNet_2524a906-a8fd-4562-91c0-3e413d49042d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_ac05a78e-1814-4a27-88f5-84ff0340cec2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_ac05a78e-1814-4a27-88f5-84ff0340cec2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_d18b38c8-7e89-4196-9f59-2c11148cf589" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_d18b38c8-7e89-4196-9f59-2c11148cf589" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesHeldForSale_c6e71428-c76c-4752-b7c6-b32f33417d74" xlink:href="ed-20221231.xsd#ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesHeldForSale_c6e71428-c76c-4752-b7c6-b32f33417d74" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_9d5ddf23-224c-49d1-a8e7-5cd15b745c4f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_9d5ddf23-224c-49d1-a8e7-5cd15b745c4f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_0162f94d-3d10-4ed5-be0b-ecfdb43ed5f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_0162f94d-3d10-4ed5-be0b-ecfdb43ed5f8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_9e2c06f1-9f1a-4ae0-ae79-09843f17d7de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_us-gaap_MinorityInterest_9e2c06f1-9f1a-4ae0-ae79-09843f17d7de" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumePropertyPlantandEquipmentPropertyPlantandEquipmentNonUtilityPlantDepreciation_d3d847a0-73e1-44d3-ba81-351501d83023" xlink:href="ed-20221231.xsd#ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumePropertyPlantandEquipmentPropertyPlantandEquipmentNonUtilityPlantDepreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_ed_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumePropertyPlantandEquipmentPropertyPlantandEquipmentNonUtilityPlantDepreciation_d3d847a0-73e1-44d3-ba81-351501d83023" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8a7cf161-554a-412f-96fa-1485e39b7db7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3d0c3108-a4de-456a-9d79-72aaffef70d9" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8a7cf161-554a-412f-96fa-1485e39b7db7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_80fb5010-2902-488c-a8b5-e3bfa63f65e8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8a7cf161-554a-412f-96fa-1485e39b7db7" xlink:to="loc_dei_LegalEntityAxis_80fb5010-2902-488c-a8b5-e3bfa63f65e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_80fb5010-2902-488c-a8b5-e3bfa63f65e8_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_80fb5010-2902-488c-a8b5-e3bfa63f65e8" xlink:to="loc_dei_EntityDomain_80fb5010-2902-488c-a8b5-e3bfa63f65e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_af7232ea-e8f8-497c-9fbe-e241e6a6c5fc" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_80fb5010-2902-488c-a8b5-e3bfa63f65e8" xlink:to="loc_dei_EntityDomain_af7232ea-e8f8-497c-9fbe-e241e6a6c5fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TaxEquityInvestorsMember_8f216926-be76-4271-b425-afcee93a5981" xlink:href="ed-20221231.xsd#ed_TaxEquityInvestorsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_af7232ea-e8f8-497c-9fbe-e241e6a6c5fc" xlink:to="loc_ed_TaxEquityInvestorsMember_8f216926-be76-4271-b425-afcee93a5981" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_99596a11-2bc6-45b6-9e9c-923bbff1d858" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_8a7cf161-554a-412f-96fa-1485e39b7db7" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_99596a11-2bc6-45b6-9e9c-923bbff1d858" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_99596a11-2bc6-45b6-9e9c-923bbff1d858_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_99596a11-2bc6-45b6-9e9c-923bbff1d858" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_99596a11-2bc6-45b6-9e9c-923bbff1d858_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b2356dc-8539-484d-aa80-6eef052a9509" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_99596a11-2bc6-45b6-9e9c-923bbff1d858" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b2356dc-8539-484d-aa80-6eef052a9509" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GreatValleySolarMember_1031980d-794f-42bf-bae1-fcde172e0ead" xlink:href="ed-20221231.xsd#ed_GreatValleySolarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b2356dc-8539-484d-aa80-6eef052a9509" xlink:to="loc_ed_GreatValleySolarMember_1031980d-794f-42bf-bae1-fcde172e0ead" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CopperMountainMesquiteSolarMember_82ab4cea-dd4a-43ea-89e8-df50ccbdc57d" xlink:href="ed-20221231.xsd#ed_CopperMountainMesquiteSolarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b2356dc-8539-484d-aa80-6eef052a9509" xlink:to="loc_ed_CopperMountainMesquiteSolarMember_82ab4cea-dd4a-43ea-89e8-df50ccbdc57d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDNevadaVirginiaMember_4a85d3a4-5edc-44e7-808d-695321d9b59f" xlink:href="ed-20221231.xsd#ed_CEDNevadaVirginiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b2356dc-8539-484d-aa80-6eef052a9509" xlink:to="loc_ed_CEDNevadaVirginiaMember_4a85d3a4-5edc-44e7-808d-695321d9b59f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/VariableInterestEntitiesSummaryofVIEsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#VariableInterestEntitiesSummaryofVIEsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/VariableInterestEntitiesSummaryofVIEsDetails" xlink:type="extended" id="i7ea7030f9ceb4f429266989f20b7ade2_VariableInterestEntitiesSummaryofVIEsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_edda33bf-0c89-4be3-88c6-fac4baad93a3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GeneratingCapacityOwned_d4f79b8f-9be8-4b17-8afc-144ffbefdf81" xlink:href="ed-20221231.xsd#ed_GeneratingCapacityOwned"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_edda33bf-0c89-4be3-88c6-fac4baad93a3" xlink:to="loc_ed_GeneratingCapacityOwned_d4f79b8f-9be8-4b17-8afc-144ffbefdf81" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermPurchaseCommitmentPeriod_950febc2-85a5-44f6-8c27-909c7c57899e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermPurchaseCommitmentPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_edda33bf-0c89-4be3-88c6-fac4baad93a3" xlink:to="loc_us-gaap_LongtermPurchaseCommitmentPeriod_950febc2-85a5-44f6-8c27-909c7c57899e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_0d155e7f-cecf-45e0-9c91-38a86c00eef6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_edda33bf-0c89-4be3-88c6-fac4baad93a3" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_0d155e7f-cecf-45e0-9c91-38a86c00eef6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_b6f7c4cf-a52e-4129-b7a0-ae8b0f94fb5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_edda33bf-0c89-4be3-88c6-fac4baad93a3" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_b6f7c4cf-a52e-4129-b7a0-ae8b0f94fb5c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_08e41a17-69e2-45ca-aeec-3f66252d17d5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_b6f7c4cf-a52e-4129-b7a0-ae8b0f94fb5c" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_08e41a17-69e2-45ca-aeec-3f66252d17d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_08e41a17-69e2-45ca-aeec-3f66252d17d5_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_08e41a17-69e2-45ca-aeec-3f66252d17d5" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_08e41a17-69e2-45ca-aeec-3f66252d17d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_72dfda10-a5a0-418d-b2ad-56c8313fbe8b" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_08e41a17-69e2-45ca-aeec-3f66252d17d5" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_72dfda10-a5a0-418d-b2ad-56c8313fbe8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GreatValleySolarMember_ffbcb730-e833-4990-bac7-e154822aa002" xlink:href="ed-20221231.xsd#ed_GreatValleySolarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_72dfda10-a5a0-418d-b2ad-56c8313fbe8b" xlink:to="loc_ed_GreatValleySolarMember_ffbcb730-e833-4990-bac7-e154822aa002" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CopperMountainMesquiteSolarMember_553a5d98-5b4f-48a9-8217-9f63fd4a631b" xlink:href="ed-20221231.xsd#ed_CopperMountainMesquiteSolarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_72dfda10-a5a0-418d-b2ad-56c8313fbe8b" xlink:to="loc_ed_CopperMountainMesquiteSolarMember_553a5d98-5b4f-48a9-8217-9f63fd4a631b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CEDNevadaVirginiaMember_14d02027-bfa1-4726-90fb-27f2c0c83901" xlink:href="ed-20221231.xsd#ed_CEDNevadaVirginiaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_72dfda10-a5a0-418d-b2ad-56c8313fbe8b" xlink:to="loc_ed_CEDNevadaVirginiaMember_14d02027-bfa1-4726-90fb-27f2c0c83901" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_3a90fd06-1fe4-4503-999b-7d8b207ce4d9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_b6f7c4cf-a52e-4129-b7a0-ae8b0f94fb5c" xlink:to="loc_srt_RangeAxis_3a90fd06-1fe4-4503-999b-7d8b207ce4d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3a90fd06-1fe4-4503-999b-7d8b207ce4d9_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_3a90fd06-1fe4-4503-999b-7d8b207ce4d9" xlink:to="loc_srt_RangeMember_3a90fd06-1fe4-4503-999b-7d8b207ce4d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_13f91c63-5a63-49b6-b768-0dc0e15b72d8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_3a90fd06-1fe4-4503-999b-7d8b207ce4d9" xlink:to="loc_srt_RangeMember_13f91c63-5a63-49b6-b768-0dc0e15b72d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_10131739-639f-4190-b6aa-5ed5f8f99526" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_13f91c63-5a63-49b6-b768-0dc0e15b72d8" xlink:to="loc_srt_MinimumMember_10131739-639f-4190-b6aa-5ed5f8f99526" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_1fae9540-13e5-4b71-ae7f-f141a7a40df9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_13f91c63-5a63-49b6-b768-0dc0e15b72d8" xlink:to="loc_srt_MaximumMember_1fae9540-13e5-4b71-ae7f-f141a7a40df9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_1135b038-ca5c-4f4a-b88b-9760f26c2aae" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_b6f7c4cf-a52e-4129-b7a0-ae8b0f94fb5c" xlink:to="loc_srt_ConsolidatedEntitiesAxis_1135b038-ca5c-4f4a-b88b-9760f26c2aae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_1135b038-ca5c-4f4a-b88b-9760f26c2aae_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_1135b038-ca5c-4f4a-b88b-9760f26c2aae" xlink:to="loc_srt_ConsolidatedEntitiesDomain_1135b038-ca5c-4f4a-b88b-9760f26c2aae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_72798021-69a2-4cd0-b6b8-6de227342756" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_1135b038-ca5c-4f4a-b88b-9760f26c2aae" xlink:to="loc_srt_ConsolidatedEntitiesDomain_72798021-69a2-4cd0-b6b8-6de227342756" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_9e844ca1-8e84-488d-9af9-b39f5c1dc052" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_72798021-69a2-4cd0-b6b8-6de227342756" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_9e844ca1-8e84-488d-9af9-b39f5c1dc052" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/AssetRetirementObligationsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#AssetRetirementObligationsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/AssetRetirementObligationsDetails" xlink:type="extended" id="ic7d49f520c144ff59db6d6fec88dc809_AssetRetirementObligationsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegulatoryLiabilitiesLineItems_888e610a-1f86-4e19-b2a7-2f17c11d2fd5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RegulatoryLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_888e610a-1f86-4e19-b2a7-2f17c11d2fd5" xlink:to="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_f442342a-3809-4c28-bde2-95d40e9c7544" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:to="loc_us-gaap_AssetRetirementObligation_f442342a-3809-4c28-bde2-95d40e9c7544" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_AssetRetirementObligationHeldForSale_6d2ed8cc-4e97-4afa-8f01-ae356ae4e30a" xlink:href="ed-20221231.xsd#ed_AssetRetirementObligationHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:to="loc_ed_AssetRetirementObligationHeldForSale_6d2ed8cc-4e97-4afa-8f01-ae356ae4e30a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationRevisionOfEstimate_847dbf24-8abb-495b-9ed2-2800ffdcca80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationRevisionOfEstimate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:to="loc_us-gaap_AssetRetirementObligationRevisionOfEstimate_847dbf24-8abb-495b-9ed2-2800ffdcca80" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_229a6465-b873-43cf-8308-30cf05c58113" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_229a6465-b873-43cf-8308-30cf05c58113" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationLiabilitiesSettled_8d6a9c26-9d21-4533-9936-f041cd44799e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationLiabilitiesSettled"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_1982bc00-ad55-4101-a9cb-dfa11615e2ae" xlink:to="loc_us-gaap_AssetRetirementObligationLiabilitiesSettled_8d6a9c26-9d21-4533-9936-f041cd44799e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_613e1629-303b-4a3c-b4c3-9720d40fb18b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationPeriodIncreaseDecrease_f79ecded-c0f6-46da-afc5-86b690984229" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetRetirementObligationPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_888e610a-1f86-4e19-b2a7-2f17c11d2fd5" xlink:to="loc_us-gaap_AssetRetirementObligationPeriodIncreaseDecrease_f79ecded-c0f6-46da-afc5-86b690984229" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_b74aca8f-ee9e-4a21-a55f-e3ac6415ec11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRegulatoryLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RegulatoryLiabilitiesLineItems_888e610a-1f86-4e19-b2a7-2f17c11d2fd5" xlink:to="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_b74aca8f-ee9e-4a21-a55f-e3ac6415ec11" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1608f66e-b819-4efe-b9bc-0b45b023a98a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRegulatoryLiabilitiesTable_b74aca8f-ee9e-4a21-a55f-e3ac6415ec11" xlink:to="loc_dei_LegalEntityAxis_1608f66e-b819-4efe-b9bc-0b45b023a98a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1608f66e-b819-4efe-b9bc-0b45b023a98a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1608f66e-b819-4efe-b9bc-0b45b023a98a" xlink:to="loc_dei_EntityDomain_1608f66e-b819-4efe-b9bc-0b45b023a98a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ef754bec-4157-4ca0-9184-1529d77735de" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1608f66e-b819-4efe-b9bc-0b45b023a98a" xlink:to="loc_dei_EntityDomain_ef754bec-4157-4ca0-9184-1529d77735de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cc7877a7-97b8-41f1-b27e-33dde643354d" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ef754bec-4157-4ca0-9184-1529d77735de" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_cc7877a7-97b8-41f1-b27e-33dde643354d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_12759bc7-2b77-4fdc-9db5-9d6f954c0e77" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ef754bec-4157-4ca0-9184-1529d77735de" xlink:to="loc_ed_CleanEnergyBusinessesMember_12759bc7-2b77-4fdc-9db5-9d6f954c0e77" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RelatedPartyTransactionsAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RelatedPartyTransactionsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RelatedPartyTransactionsAdditionalInformationDetails" xlink:type="extended" id="idf425fa1bf594ecc89e3cd1ed6465fc4_RelatedPartyTransactionsAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_08d09ef6-a49c-4a54-934f-dae240ecf86d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_StockholdersEquity_08d09ef6-a49c-4a54-934f-dae240ecf86d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_SalesOfNaturalGasPropaneNglsAndCondensateAndAffiliates_9f25439b-0976-4f52-844c-b63a4d7e7315" xlink:href="ed-20221231.xsd#ed_SalesOfNaturalGasPropaneNglsAndCondensateAndAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_SalesOfNaturalGasPropaneNglsAndCondensateAndAffiliates_9f25439b-0976-4f52-844c-b63a4d7e7315" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTaxExpenseDueToAffiliatesCurrent_2a46a841-c672-45ca-82a4-8d06b0c224f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTaxExpenseDueToAffiliatesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_RelatedPartyTaxExpenseDueToAffiliatesCurrent_2a46a841-c672-45ca-82a4-8d06b0c224f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_8a272983-2be8-4db0-bd22-cbf150771d74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_8a272983-2be8-4db0-bd22-cbf150771d74" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty_8ac6cd15-9f69-4e76-94d9-1243935b6b35" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty_8ac6cd15-9f69-4e76-94d9-1243935b6b35" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_f146854c-127b-4b48-ad96-78bed68321da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_f146854c-127b-4b48-ad96-78bed68321da" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_TermOfContract_d3680a44-7208-4525-8cf9-4e7f5d9cbed1" xlink:href="ed-20221231.xsd#ed_TermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_TermOfContract_d3680a44-7208-4525-8cf9-4e7f5d9cbed1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GeneratingCapacityPerDay_8465502d-e87c-482a-82c4-42e38adfac2e" xlink:href="ed-20221231.xsd#ed_GeneratingCapacityPerDay"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_GeneratingCapacityPerDay_8465502d-e87c-482a-82c4-42e38adfac2e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_c0eea3ef-2247-431e-8687-3b9029337e48" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_c0eea3ef-2247-431e-8687-3b9029337e48" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EquityMethodInvestmentOwnershipPercentageExpectedIncreaseDecrease_cc98e642-7920-483a-8f8f-7c6406b6f6c5" xlink:href="ed-20221231.xsd#ed_EquityMethodInvestmentOwnershipPercentageExpectedIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_EquityMethodInvestmentOwnershipPercentageExpectedIncreaseDecrease_cc98e642-7920-483a-8f8f-7c6406b6f6c5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RelatedPartyTransactionLendingPeriod_c5cbe54a-71e0-4538-83be-181903dec5a4" xlink:href="ed-20221231.xsd#ed_RelatedPartyTransactionLendingPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_RelatedPartyTransactionLendingPeriod_c5cbe54a-71e0-4538-83be-181903dec5a4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MaximumAmountOfFunding_df984812-f6ad-4119-8b26-924eeedb85a9" xlink:href="ed-20221231.xsd#ed_MaximumAmountOfFunding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_MaximumAmountOfFunding_df984812-f6ad-4119-8b26-924eeedb85a9" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OutstandingLoan_828a86c2-dfdb-452f-995f-dd793657fd02" xlink:href="ed-20221231.xsd#ed_OutstandingLoan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_OutstandingLoan_828a86c2-dfdb-452f-995f-dd793657fd02" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GainLossOnCommodityContracts_92f4a8d1-105e-4127-bf99-84a287d4eb2c" xlink:href="ed-20221231.xsd#ed_GainLossOnCommodityContracts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_ed_GainLossOnCommodityContracts_92f4a8d1-105e-4127-bf99-84a287d4eb2c" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_25f88095-419e-49d2-9be0-4a667f4ef247" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_88df305b-a16b-4cc1-9387-1c6a6a9a7114" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:to="loc_dei_LegalEntityAxis_88df305b-a16b-4cc1-9387-1c6a6a9a7114" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_88df305b-a16b-4cc1-9387-1c6a6a9a7114_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_88df305b-a16b-4cc1-9387-1c6a6a9a7114" xlink:to="loc_dei_EntityDomain_88df305b-a16b-4cc1-9387-1c6a6a9a7114_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0afcb4a6-1ac3-4c3b-ace1-ec0b366e8bc2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_88df305b-a16b-4cc1-9387-1c6a6a9a7114" xlink:to="loc_dei_EntityDomain_0afcb4a6-1ac3-4c3b-ace1-ec0b366e8bc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_96618d53-ae7b-45b6-beb6-9a33ad0d11cd" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0afcb4a6-1ac3-4c3b-ace1-ec0b366e8bc2" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_96618d53-ae7b-45b6-beb6-9a33ad0d11cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_4111d030-f85d-4877-beb6-aeeb8619e29e" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0afcb4a6-1ac3-4c3b-ace1-ec0b366e8bc2" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_4111d030-f85d-4877-beb6-aeeb8619e29e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonTransmissionElectricMember_24da0077-fde1-4598-8392-65c9f0c34251" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonTransmissionElectricMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0afcb4a6-1ac3-4c3b-ace1-ec0b366e8bc2" xlink:to="loc_ed_ConsolidatedEdisonTransmissionElectricMember_24da0077-fde1-4598-8392-65c9f0c34251" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonGasPipelineandStorageLLCMember_f7750c77-aeaf-46fe-8dd5-5cd9e44f4902" xlink:href="ed-20221231.xsd#ed_ConEdisonGasPipelineandStorageLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0afcb4a6-1ac3-4c3b-ace1-ec0b366e8bc2" xlink:to="loc_ed_ConEdisonGasPipelineandStorageLLCMember_f7750c77-aeaf-46fe-8dd5-5cd9e44f4902" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_7f3359f6-e112-489c-b701-14d516bc44cb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:to="loc_srt_OwnershipAxis_7f3359f6-e112-489c-b701-14d516bc44cb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_7f3359f6-e112-489c-b701-14d516bc44cb_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_7f3359f6-e112-489c-b701-14d516bc44cb" xlink:to="loc_srt_OwnershipDomain_7f3359f6-e112-489c-b701-14d516bc44cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_d3145f38-66ad-4416-a36c-2e246863ab84" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_7f3359f6-e112-489c-b701-14d516bc44cb" xlink:to="loc_srt_OwnershipDomain_d3145f38-66ad-4416-a36c-2e246863ab84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NYTranscoMember_824582b6-3847-4394-bc93-728966c92ac0" xlink:href="ed-20221231.xsd#ed_NYTranscoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_d3145f38-66ad-4416-a36c-2e246863ab84" xlink:to="loc_ed_NYTranscoMember_824582b6-3847-4394-bc93-728966c92ac0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_280e5467-fc94-496c-b47d-0ecc0e5fb886" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_280e5467-fc94-496c-b47d-0ecc0e5fb886" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_280e5467-fc94-496c-b47d-0ecc0e5fb886_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_280e5467-fc94-496c-b47d-0ecc0e5fb886" xlink:to="loc_us-gaap_RelatedPartyDomain_280e5467-fc94-496c-b47d-0ecc0e5fb886_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_5273a019-b1f8-433c-913a-ed18d52a5342" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_280e5467-fc94-496c-b47d-0ecc0e5fb886" xlink:to="loc_us-gaap_RelatedPartyDomain_5273a019-b1f8-433c-913a-ed18d52a5342" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_c553a6b4-280c-496e-bb56-ac335654a2d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvesteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5273a019-b1f8-433c-913a-ed18d52a5342" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_c553a6b4-280c-496e-bb56-ac335654a2d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_31d4d8fe-af05-42c2-bfed-15a1366cfc77" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_5273a019-b1f8-433c-913a-ed18d52a5342" xlink:to="loc_srt_AffiliatedEntityMember_31d4d8fe-af05-42c2-bfed-15a1366cfc77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5d25675b-5b9b-4854-8ae6-b64210aa4e24" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5d25675b-5b9b-4854-8ae6-b64210aa4e24" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_5d25675b-5b9b-4854-8ae6-b64210aa4e24_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5d25675b-5b9b-4854-8ae6-b64210aa4e24" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_5d25675b-5b9b-4854-8ae6-b64210aa4e24_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_581cdef1-4658-4cdf-9e8b-b4dcb71c9452" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_5d25675b-5b9b-4854-8ae6-b64210aa4e24" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_581cdef1-4658-4cdf-9e8b-b4dcb71c9452" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_StagecoachGasServicesLLCMember_51712ba5-536e-474d-9a33-c97e062c4b3d" xlink:href="ed-20221231.xsd#ed_StagecoachGasServicesLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_581cdef1-4658-4cdf-9e8b-b4dcb71c9452" xlink:to="loc_ed_StagecoachGasServicesLLCMember_51712ba5-536e-474d-9a33-c97e062c4b3d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MountainValleyPipelineLLCMember_b15e6eef-5034-4975-a9f6-9070ecc7fae4" xlink:href="ed-20221231.xsd#ed_MountainValleyPipelineLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_581cdef1-4658-4cdf-9e8b-b4dcb71c9452" xlink:to="loc_ed_MountainValleyPipelineLLCMember_b15e6eef-5034-4975-a9f6-9070ecc7fae4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_545dc02f-f471-4276-9c57-38484abf06b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_545dc02f-f471-4276-9c57-38484abf06b9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_545dc02f-f471-4276-9c57-38484abf06b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_545dc02f-f471-4276-9c57-38484abf06b9" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_545dc02f-f471-4276-9c57-38484abf06b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_7ce6d95a-9e2e-4e32-bcca-4cbe1e0bd8e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_545dc02f-f471-4276-9c57-38484abf06b9" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_7ce6d95a-9e2e-4e32-bcca-4cbe1e0bd8e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PurchasedPowerCostsMember_e294930d-577b-46a8-ba3b-b469a5a0297d" xlink:href="ed-20221231.xsd#ed_PurchasedPowerCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_7ce6d95a-9e2e-4e32-bcca-4cbe1e0bd8e7" xlink:to="loc_ed_PurchasedPowerCostsMember_e294930d-577b-46a8-ba3b-b469a5a0297d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_RelatedPartyLendingofFundsMember_ea538ca8-209e-49ec-bb91-71e964cd6bc7" xlink:href="ed-20221231.xsd#ed_RelatedPartyLendingofFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_7ce6d95a-9e2e-4e32-bcca-4cbe1e0bd8e7" xlink:to="loc_ed_RelatedPartyLendingofFundsMember_ea538ca8-209e-49ec-bb91-71e964cd6bc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_FinancialElectricCapacityContractMember_10f969fc-86fe-4649-bb71-4a577dcb0d69" xlink:href="ed-20221231.xsd#ed_FinancialElectricCapacityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_7ce6d95a-9e2e-4e32-bcca-4cbe1e0bd8e7" xlink:to="loc_ed_FinancialElectricCapacityContractMember_10f969fc-86fe-4649-bb71-4a577dcb0d69" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_e38727a1-a301-4343-848d-e007171790ff" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_bdfcaba0-90e4-4511-b6ee-15cde188995c" xlink:to="loc_srt_CounterpartyNameAxis_e38727a1-a301-4343-848d-e007171790ff" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_e38727a1-a301-4343-848d-e007171790ff_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_e38727a1-a301-4343-848d-e007171790ff" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_e38727a1-a301-4343-848d-e007171790ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26ae7e30-bec5-4c98-a48c-1cbbf94486b6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_e38727a1-a301-4343-848d-e007171790ff" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26ae7e30-bec5-4c98-a48c-1cbbf94486b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_MountainValleyPipelineLLCMember_186a1e42-1e21-413a-8b86-b0dca1bc6b2a" xlink:href="ed-20221231.xsd#ed_MountainValleyPipelineLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26ae7e30-bec5-4c98-a48c-1cbbf94486b6" xlink:to="loc_ed_MountainValleyPipelineLLCMember_186a1e42-1e21-413a-8b86-b0dca1bc6b2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonEnergyInc.Member_3a309d2a-a0ba-4222-8846-751784a89794" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonEnergyInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_26ae7e30-bec5-4c98-a48c-1cbbf94486b6" xlink:to="loc_ed_ConsolidatedEdisonEnergyInc.Member_3a309d2a-a0ba-4222-8846-751784a89794" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/RelatedPartyTransactionsSummaryofCostsofAdministrativeandOtherServicesProvidedandReceivedDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#RelatedPartyTransactionsSummaryofCostsofAdministrativeandOtherServicesProvidedandReceivedDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/RelatedPartyTransactionsSummaryofCostsofAdministrativeandOtherServicesProvidedandReceivedDetails" xlink:type="extended" id="i2c3d14c122e8457caac72865a9a42be9_RelatedPartyTransactionsSummaryofCostsofAdministrativeandOtherServicesProvidedandReceivedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_bd02836b-9f6c-4bf2-aa63-485bc1636b58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromRelatedParties_4a2caaaf-a4aa-4367-8355-acc64deda1ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_bd02836b-9f6c-4bf2-aa63-485bc1636b58" xlink:to="loc_us-gaap_RevenueFromRelatedParties_4a2caaaf-a4aa-4367-8355-acc64deda1ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesRelatedParty_86f1d6b6-3a10-471f-8430-0988fc8cb3a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostsAndExpensesRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_bd02836b-9f6c-4bf2-aa63-485bc1636b58" xlink:to="loc_us-gaap_CostsAndExpensesRelatedParty_86f1d6b6-3a10-471f-8430-0988fc8cb3a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_77ab803d-e26d-45b7-9db5-3f63e5aae75c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_bd02836b-9f6c-4bf2-aa63-485bc1636b58" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_77ab803d-e26d-45b7-9db5-3f63e5aae75c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_072a1794-3f08-40d0-b358-55f317d528a4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_77ab803d-e26d-45b7-9db5-3f63e5aae75c" xlink:to="loc_dei_LegalEntityAxis_072a1794-3f08-40d0-b358-55f317d528a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_072a1794-3f08-40d0-b358-55f317d528a4_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_072a1794-3f08-40d0-b358-55f317d528a4" xlink:to="loc_dei_EntityDomain_072a1794-3f08-40d0-b358-55f317d528a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_812566ee-6768-482f-8af0-b745bb34a676" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_072a1794-3f08-40d0-b358-55f317d528a4" xlink:to="loc_dei_EntityDomain_812566ee-6768-482f-8af0-b745bb34a676" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_373d5ad5-c7b2-4f03-a54a-306c06a42c75" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_812566ee-6768-482f-8af0-b745bb34a676" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_373d5ad5-c7b2-4f03-a54a-306c06a42c75" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/DispositionsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#DispositionsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/DispositionsDetails" xlink:type="extended" id="i79afd3edde7d487ba143ca7ca38d974d_DispositionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_ccb9d5a9-90ef-4aa6-af66-8cf361bb9307" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet_ccb9d5a9-90ef-4aa6-af66-8cf361bb9307" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets_1f854879-e66c-48a5-a132-329235da5d2a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnDispositionOfAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets_1f854879-e66c-48a5-a132-329235da5d2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_GainLossOnDispositionOfPropertyPlantEquipmentExcludingOilAndGasPropertyAndTimberPropertyAfterTax_8fd1e2dc-1cde-4f17-89c7-647f3c1e2981" xlink:href="ed-20221231.xsd#ed_GainLossOnDispositionOfPropertyPlantEquipmentExcludingOilAndGasPropertyAndTimberPropertyAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_ed_GainLossOnDispositionOfPropertyPlantEquipmentExcludingOilAndGasPropertyAndTimberPropertyAfterTax_8fd1e2dc-1cde-4f17-89c7-647f3c1e2981" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_311212dc-665f-4430-8bf1-7f1ba2d0ddd4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_us-gaap_EquityMethodInvestments_311212dc-665f-4430-8bf1-7f1ba2d0ddd4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_82e770d1-4f43-47c5-ba0b-6d9a11e5eb58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_82e770d1-4f43-47c5-ba0b-6d9a11e5eb58" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_3e928e73-eac2-4901-b4ef-0d7f975f50e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_3e928e73-eac2-4901-b4ef-0d7f975f50e3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_13d31147-6fed-4c1e-80b5-2a108144f1a3" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5df190ed-d115-406a-a720-7ed1ea51095c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:to="loc_dei_LegalEntityAxis_5df190ed-d115-406a-a720-7ed1ea51095c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5df190ed-d115-406a-a720-7ed1ea51095c_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5df190ed-d115-406a-a720-7ed1ea51095c" xlink:to="loc_dei_EntityDomain_5df190ed-d115-406a-a720-7ed1ea51095c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_78c4b7a2-4729-4511-88c1-793ff044c722" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5df190ed-d115-406a-a720-7ed1ea51095c" xlink:to="loc_dei_EntityDomain_78c4b7a2-4729-4511-88c1-793ff044c722" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_fe0c56fc-193a-4834-b15d-7140a919d2a1" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_78c4b7a2-4729-4511-88c1-793ff044c722" xlink:to="loc_ed_CleanEnergyBusinessesMember_fe0c56fc-193a-4834-b15d-7140a919d2a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_95c4e152-d454-43fc-a988-f72862a7adcd" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_78c4b7a2-4729-4511-88c1-793ff044c722" xlink:to="loc_ed_ConEdisonTransmissionMember_95c4e152-d454-43fc-a988-f72862a7adcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ea29af33-b0ca-4356-be70-114cc1bd5154" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_78c4b7a2-4729-4511-88c1-793ff044c722" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_ea29af33-b0ca-4356-be70-114cc1bd5154" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_0a83421d-7926-467a-8855-cdcb44775c48" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:to="loc_srt_ConsolidatedEntitiesAxis_0a83421d-7926-467a-8855-cdcb44775c48" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_0a83421d-7926-467a-8855-cdcb44775c48_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_0a83421d-7926-467a-8855-cdcb44775c48" xlink:to="loc_srt_ConsolidatedEntitiesDomain_0a83421d-7926-467a-8855-cdcb44775c48_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_449c3c0f-2708-4e1d-8d07-3b81f4b89304" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_0a83421d-7926-467a-8855-cdcb44775c48" xlink:to="loc_srt_ConsolidatedEntitiesDomain_449c3c0f-2708-4e1d-8d07-3b81f4b89304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_164f8ee7-722b-4cd4-8340-d6dec889cc19" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_449c3c0f-2708-4e1d-8d07-3b81f4b89304" xlink:to="loc_srt_SubsidiariesMember_164f8ee7-722b-4cd4-8340-d6dec889cc19" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_78dfbd49-75be-4556-8b52-bca59eab737f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_78dfbd49-75be-4556-8b52-bca59eab737f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_78dfbd49-75be-4556-8b52-bca59eab737f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_78dfbd49-75be-4556-8b52-bca59eab737f" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_78dfbd49-75be-4556-8b52-bca59eab737f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_c2512b95-24ca-4f31-a98f-eecd2ad694cb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_78dfbd49-75be-4556-8b52-bca59eab737f" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_c2512b95-24ca-4f31-a98f-eecd2ad694cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_StagecoachGasServicesLLCMember_fb08e465-475c-43ec-98fd-a8147693a7c0" xlink:href="ed-20221231.xsd#ed_StagecoachGasServicesLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_c2512b95-24ca-4f31-a98f-eecd2ad694cb" xlink:to="loc_ed_StagecoachGasServicesLLCMember_fb08e465-475c-43ec-98fd-a8147693a7c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_3574ba31-d4bc-4d04-8873-ac9daa79666d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_3574ba31-d4bc-4d04-8873-ac9daa79666d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_3574ba31-d4bc-4d04-8873-ac9daa79666d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_3574ba31-d4bc-4d04-8873-ac9daa79666d" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_3574ba31-d4bc-4d04-8873-ac9daa79666d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_648d096c-d169-48a3-a676-288c5e4191ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_3574ba31-d4bc-4d04-8873-ac9daa79666d" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_648d096c-d169-48a3-a676-288c5e4191ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_PurchasedPowerCostsMember_f5d3de4a-e9b8-4c58-98cc-06c599e3bcbb" xlink:href="ed-20221231.xsd#ed_PurchasedPowerCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_648d096c-d169-48a3-a676-288c5e4191ac" xlink:to="loc_ed_PurchasedPowerCostsMember_f5d3de4a-e9b8-4c58-98cc-06c599e3bcbb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d17a4100-6615-41b5-8bdf-bb2c134dafd3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_bde3b111-36da-40cb-8f2d-f218c8266e86" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d17a4100-6615-41b5-8bdf-bb2c134dafd3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d17a4100-6615-41b5-8bdf-bb2c134dafd3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d17a4100-6615-41b5-8bdf-bb2c134dafd3" xlink:to="loc_us-gaap_RelatedPartyDomain_d17a4100-6615-41b5-8bdf-bb2c134dafd3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_780ff5f2-60c8-4dd8-be08-335457e03b42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d17a4100-6615-41b5-8bdf-bb2c134dafd3" xlink:to="loc_us-gaap_RelatedPartyDomain_780ff5f2-60c8-4dd8-be08-335457e03b42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_cd78444a-0854-4b7d-b9da-7d8b927bee32" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvesteeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_780ff5f2-60c8-4dd8-be08-335457e03b42" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_cd78444a-0854-4b7d-b9da-7d8b927bee32" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/HeldforSaleTreatmentoftheCleanEnergyBusinessesAdditionalInformationDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#HeldforSaleTreatmentoftheCleanEnergyBusinessesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/HeldforSaleTreatmentoftheCleanEnergyBusinessesAdditionalInformationDetails" xlink:type="extended" id="i9790c6e26a574f3c82c30c6846e4e6e1_HeldforSaleTreatmentoftheCleanEnergyBusinessesAdditionalInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_89c0bd89-3e61-4f5f-8133-01fae04eaa9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_89c0bd89-3e61-4f5f-8133-01fae04eaa9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_NumberOfSolarProjects_706cb434-5629-4b15-a956-d72ca54724e9" xlink:href="ed-20221231.xsd#ed_NumberOfSolarProjects"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_ed_NumberOfSolarProjects_706cb434-5629-4b15-a956-d72ca54724e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupHoldingPeriod_44a14b0e-7eeb-46ea-a3b2-bd679573e18a" xlink:href="ed-20221231.xsd#ed_DisposalGroupHoldingPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_ed_DisposalGroupHoldingPeriod_44a14b0e-7eeb-46ea-a3b2-bd679573e18a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization_e55fdd9c-3ae9-45c5-b98a-e96b28ae04c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization_e55fdd9c-3ae9-45c5-b98a-e96b28ae04c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortizationAfterTax_fc9c004a-5a8b-445a-96e9-951f0dcd4223" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortizationAfterTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortizationAfterTax_fc9c004a-5a8b-445a-96e9-951f0dcd4223" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_0c09763c-5c34-42eb-af9b-615292f10975" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities_0c09763c-5c34-42eb-af9b-615292f10975" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationsValuationAllowance_53534983-7489-430b-b6b2-b5a54489bcf4" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationsValuationAllowance_53534983-7489-430b-b6b2-b5a54489bcf4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationDeferredIncomeTaxes_05078661-a0bd-4e4c-87c0-df5b9aac7fa0" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationDeferredIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationDeferredIncomeTaxes_05078661-a0bd-4e4c-87c0-df5b9aac7fa0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e5647e3f-cca1-44c4-9a4b-10353874a509" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_3badda71-b8ce-4808-ab85-97d9a03c4d75" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e5647e3f-cca1-44c4-9a4b-10353874a509" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_a2900f4a-40e6-46b9-9f02-f69bfb2394d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e5647e3f-cca1-44c4-9a4b-10353874a509" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_a2900f4a-40e6-46b9-9f02-f69bfb2394d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_a2900f4a-40e6-46b9-9f02-f69bfb2394d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a2900f4a-40e6-46b9-9f02-f69bfb2394d1" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_a2900f4a-40e6-46b9-9f02-f69bfb2394d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_8a614bbf-575a-481e-b43c-dfcdaa72f3f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a2900f4a-40e6-46b9-9f02-f69bfb2394d1" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_8a614bbf-575a-481e-b43c-dfcdaa72f3f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_8bbaeeae-55c3-409f-8449-d5fb5dd8a81b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_8a614bbf-575a-481e-b43c-dfcdaa72f3f6" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_8bbaeeae-55c3-409f-8449-d5fb5dd8a81b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_e9373e58-8e33-4a69-a0c6-6f23c4aec54a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_8a614bbf-575a-481e-b43c-dfcdaa72f3f6" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_e9373e58-8e33-4a69-a0c6-6f23c4aec54a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5b651757-9537-4ea9-a56c-4ff1c25dcbb6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e5647e3f-cca1-44c4-9a4b-10353874a509" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5b651757-9537-4ea9-a56c-4ff1c25dcbb6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5b651757-9537-4ea9-a56c-4ff1c25dcbb6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5b651757-9537-4ea9-a56c-4ff1c25dcbb6" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5b651757-9537-4ea9-a56c-4ff1c25dcbb6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0188133f-7f58-4494-baa4-cef10b947344" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5b651757-9537-4ea9-a56c-4ff1c25dcbb6" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0188133f-7f58-4494-baa4-cef10b947344" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_896bcbea-a5c6-40d4-8b3f-7d195683988f" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0188133f-7f58-4494-baa4-cef10b947344" xlink:to="loc_ed_CleanEnergyBusinessesMember_896bcbea-a5c6-40d4-8b3f-7d195683988f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CraneProjectMember_728fc58a-9c73-4069-b757-0b77c2ce5f40" xlink:href="ed-20221231.xsd#ed_CraneProjectMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_0188133f-7f58-4494-baa4-cef10b947344" xlink:to="loc_ed_CraneProjectMember_728fc58a-9c73-4069-b757-0b77c2ce5f40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_9b310f71-8250-46c7-909a-e52dc4c315ef" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e5647e3f-cca1-44c4-9a4b-10353874a509" xlink:to="loc_srt_RangeAxis_9b310f71-8250-46c7-909a-e52dc4c315ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9b310f71-8250-46c7-909a-e52dc4c315ef_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_9b310f71-8250-46c7-909a-e52dc4c315ef" xlink:to="loc_srt_RangeMember_9b310f71-8250-46c7-909a-e52dc4c315ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_34d16a11-540e-489d-9176-fcc52898e8b7" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_9b310f71-8250-46c7-909a-e52dc4c315ef" xlink:to="loc_srt_RangeMember_34d16a11-540e-489d-9176-fcc52898e8b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e312389b-3743-4bf2-91c8-f84d0e884e69" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_34d16a11-540e-489d-9176-fcc52898e8b7" xlink:to="loc_srt_MinimumMember_e312389b-3743-4bf2-91c8-f84d0e884e69" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ac8405e3-2fab-4542-8f12-41225dbe099a" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e5647e3f-cca1-44c4-9a4b-10353874a509" xlink:to="loc_dei_LegalEntityAxis_ac8405e3-2fab-4542-8f12-41225dbe099a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ac8405e3-2fab-4542-8f12-41225dbe099a_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ac8405e3-2fab-4542-8f12-41225dbe099a" xlink:to="loc_dei_EntityDomain_ac8405e3-2fab-4542-8f12-41225dbe099a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ef2d5e2d-4bbc-4623-b072-f02ef59f032c" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ac8405e3-2fab-4542-8f12-41225dbe099a" xlink:to="loc_dei_EntityDomain_ef2d5e2d-4bbc-4623-b072-f02ef59f032c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_64d3454a-6b23-4fce-88fc-d259d88def72" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ef2d5e2d-4bbc-4623-b072-f02ef59f032c" xlink:to="loc_ed_CleanEnergyBusinessesMember_64d3454a-6b23-4fce-88fc-d259d88def72" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofPreTaxProfitDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofPreTaxProfitDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofPreTaxProfitDetails" xlink:type="extended" id="ib0ea1d82ae8e4ec0a723ab90ec5ecd36_HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofPreTaxProfitDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_d471ddb3-1440-4e3a-9c97-575f1321fa24" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss_51f69880-c4dd-4dec-b271-0c80d161429a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_d471ddb3-1440-4e3a-9c97-575f1321fa24" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss_51f69880-c4dd-4dec-b271-0c80d161429a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationGrossProfitLossExcludingNonControllingInterest_867e8381-7542-4a8a-9129-ec13aa1ac651" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationGrossProfitLossExcludingNonControllingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_d471ddb3-1440-4e3a-9c97-575f1321fa24" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationGrossProfitLossExcludingNonControllingInterest_867e8381-7542-4a8a-9129-ec13aa1ac651" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_579b3659-f95c-4aa1-a07a-29787b89ffeb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_d471ddb3-1440-4e3a-9c97-575f1321fa24" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_579b3659-f95c-4aa1-a07a-29787b89ffeb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8ede15c9-3d17-4b15-b874-716b9832cc6b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_579b3659-f95c-4aa1-a07a-29787b89ffeb" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8ede15c9-3d17-4b15-b874-716b9832cc6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8ede15c9-3d17-4b15-b874-716b9832cc6b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8ede15c9-3d17-4b15-b874-716b9832cc6b" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8ede15c9-3d17-4b15-b874-716b9832cc6b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_faf7ee1b-4ae5-4fe6-9930-458cf8c531f7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8ede15c9-3d17-4b15-b874-716b9832cc6b" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_faf7ee1b-4ae5-4fe6-9930-458cf8c531f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_53aa753a-fe6e-4dcb-85af-62951a91a5fa" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_faf7ee1b-4ae5-4fe6-9930-458cf8c531f7" xlink:to="loc_ed_CleanEnergyBusinessesMember_53aa753a-fe6e-4dcb-85af-62951a91a5fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_bc1bdc69-234f-4c8a-9eca-8035c6f3a6c3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_579b3659-f95c-4aa1-a07a-29787b89ffeb" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_bc1bdc69-234f-4c8a-9eca-8035c6f3a6c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_bc1bdc69-234f-4c8a-9eca-8035c6f3a6c3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_bc1bdc69-234f-4c8a-9eca-8035c6f3a6c3" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_bc1bdc69-234f-4c8a-9eca-8035c6f3a6c3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_95b7dc3e-b39a-4121-bf6c-d2869e461ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_bc1bdc69-234f-4c8a-9eca-8035c6f3a6c3" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_95b7dc3e-b39a-4121-bf6c-d2869e461ff6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_00b2b01e-ca3d-4283-b7f4-40a5fd7222f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_95b7dc3e-b39a-4121-bf6c-d2869e461ff6" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_00b2b01e-ca3d-4283-b7f4-40a5fd7222f1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofCarryingAmountsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofCarryingAmountsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofCarryingAmountsDetails" xlink:type="extended" id="i379e427996a3446ea69f2d6a20f70a47_HeldforSaleTreatmentoftheCleanEnergyBusinessesScheduleofCarryingAmountsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_6c9e66dc-1479-4079-93be-48c5e42934e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_6c9e66dc-1479-4079-93be-48c5e42934e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_a5394662-7b77-4a6a-a0e5-8b896ad34c73" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet_a5394662-7b77-4a6a-a0e5-8b896ad34c73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationAccruedUnbilledRevenue_0fa6b5c2-fa50-4cc1-8467-950fa90dbc3d" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationAccruedUnbilledRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationAccruedUnbilledRevenue_0fa6b5c2-fa50-4cc1-8467-950fa90dbc3d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationEnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost_f23f1a3a-51ca-4fdb-8205-1d6e668d32bb" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationEnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationEnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost_f23f1a3a-51ca-4fdb-8205-1d6e668d32bb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationRestrictedCashCurrent_c2a60b4f-8a3d-4d8a-aa01-5fd6311e7cc9" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationRestrictedCashCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationRestrictedCashCurrent_c2a60b4f-8a3d-4d8a-aa01-5fd6311e7cc9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationDerivativeAssetCurrent_f7adc961-2636-465d-bbac-6ef347ae895a" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationDerivativeAssetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationDerivativeAssetCurrent_f7adc961-2636-465d-bbac-6ef347ae895a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent_29cbe592-ee20-4237-a164-983e2941c54b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent_29cbe592-ee20-4237-a164-983e2941c54b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_b660c08e-f8d0-4fc7-b114-35ed17dffc39" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_b660c08e-f8d0-4fc7-b114-35ed17dffc39" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_d8ecf176-939c-4a8c-9b41-e7763dcb6cfd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_6ecb2ba1-0047-4c58-9a45-50e5d478874a" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent_d8ecf176-939c-4a8c-9b41-e7763dcb6cfd" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationPropertyPlantandEquipmentNonUtilityPlantNetNoncurrent_0cd78797-6bae-444b-a324-f3a880f82647" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationPropertyPlantandEquipmentNonUtilityPlantNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationPropertyPlantandEquipmentNonUtilityPlantNetNoncurrent_0cd78797-6bae-444b-a324-f3a880f82647" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationConstructionWorkInProgress_f64157fb-c9fc-4907-9af0-5158c54e0cee" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationConstructionWorkInProgress"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationConstructionWorkInProgress_f64157fb-c9fc-4907-9af0-5158c54e0cee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_129fe529-5d7e-4404-9647-c982dd6bbef7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_129fe529-5d7e-4404-9647-c982dd6bbef7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent_d00c4823-c036-4146-b737-daf313dc9b8b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent_d00c4823-c036-4146-b737-daf313dc9b8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_60005799-40b1-4ef5-8c30-a752c6206eaf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_60005799-40b1-4ef5-8c30-a752c6206eaf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAsset_138d253e-7e69-4afc-84f3-01e72a6a1eda" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAsset_138d253e-7e69-4afc-84f3-01e72a6a1eda" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationDerivativeAssetNoncurrent_dab98ce4-167e-49e9-ac6e-bac97a0c43c5" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationDerivativeAssetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationDerivativeAssetNoncurrent_dab98ce4-167e-49e9-ac6e-bac97a0c43c5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_0d9750f8-0755-42cc-9078-18cb72f958b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets_0d9750f8-0755-42cc-9078-18cb72f958b7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_80922e8e-079c-4db6-906d-4daf97f13ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_31eb5202-038f-48f7-8d73-585c80fc946a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent_80922e8e-079c-4db6-906d-4daf97f13ed3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_55f9c677-1e35-403c-a4bd-161080a1735c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_55f9c677-1e35-403c-a4bd-161080a1735c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationLongTermDebtCurrent_8b5ed1c8-9c06-4753-aa9d-a5440660e437" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationLongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationLongTermDebtCurrent_8b5ed1c8-9c06-4753-aa9d-a5440660e437" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationTermLoan_6740c865-aaf3-48ad-a82c-c0efd1fe114c" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationTermLoan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationTermLoan_6740c865-aaf3-48ad-a82c-c0efd1fe114c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent_b3d2f5ac-b9f9-4204-8da6-f1db2ed047d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent_b3d2f5ac-b9f9-4204-8da6-f1db2ed047d1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesCurrent_359d8cbf-a904-4367-86cd-1f08a9c47e40" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesCurrent_359d8cbf-a904-4367-86cd-1f08a9c47e40" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationAccruedInterestCurrent_093937dc-df8b-4a01-8962-9383276db616" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationAccruedInterestCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationAccruedInterestCurrent_093937dc-df8b-4a01-8962-9383276db616" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_d7845d3c-0fd1-47b1-9137-0f97fc2e3277" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities_d7845d3c-0fd1-47b1-9137-0f97fc2e3277" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_9aa43b2b-c7e4-4006-8c13-2d2ba1029896" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract_8bd1768e-933d-444c-a1b6-946a2d0fc09a" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_9aa43b2b-c7e4-4006-8c13-2d2ba1029896" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_faef8eb3-1aeb-419c-89a6-844875739782" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_faef8eb3-1aeb-419c-89a6-844875739782" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligations_28ee62de-eecf-431f-9ae7-4a03b95611b2" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_faef8eb3-1aeb-419c-89a6-844875739782" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationAssetRetirementObligations_28ee62de-eecf-431f-9ae7-4a03b95611b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent_d3d9e0df-f699-4e95-94a1-550cc520b13f" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_faef8eb3-1aeb-419c-89a6-844875739782" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilitiesNoncurrent_d3d9e0df-f699-4e95-94a1-550cc520b13f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_27592451-2a45-4b32-9b41-71202fbc0d2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_faef8eb3-1aeb-419c-89a6-844875739782" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities_27592451-2a45-4b32-9b41-71202fbc0d2d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_f477cab2-05e2-4ca6-96f0-3813e35197d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract_faef8eb3-1aeb-419c-89a6-844875739782" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_f477cab2-05e2-4ca6-96f0-3813e35197d6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_DisposalGroupIncludingDiscontinuedOperationLongTermDebt_212b7c75-7c77-4d62-836b-2f78f33e6bb9" xlink:href="ed-20221231.xsd#ed_DisposalGroupIncludingDiscontinuedOperationLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_ed_DisposalGroupIncludingDiscontinuedOperationLongTermDebt_212b7c75-7c77-4d62-836b-2f78f33e6bb9" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_471e5ad4-9292-4a1d-839d-32ce61b39ec1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_471e5ad4-9292-4a1d-839d-32ce61b39ec1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_b965b4aa-4734-4cb1-8b73-2d59f3614cea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_10e21d8f-3956-4ca6-b201-dfca7fa80baf" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_b965b4aa-4734-4cb1-8b73-2d59f3614cea" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_a3a034dd-03e9-446a-9e53-e27eefcbb7d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_b965b4aa-4734-4cb1-8b73-2d59f3614cea" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_a3a034dd-03e9-446a-9e53-e27eefcbb7d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_a3a034dd-03e9-446a-9e53-e27eefcbb7d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a3a034dd-03e9-446a-9e53-e27eefcbb7d6" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_a3a034dd-03e9-446a-9e53-e27eefcbb7d6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_52d087b0-308d-4e9b-8f04-4dbf8383fbb8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_a3a034dd-03e9-446a-9e53-e27eefcbb7d6" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_52d087b0-308d-4e9b-8f04-4dbf8383fbb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_fb2d09e3-0478-4880-97ef-f753b6fae652" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_52d087b0-308d-4e9b-8f04-4dbf8383fbb8" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_fb2d09e3-0478-4880-97ef-f753b6fae652" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7239418c-0835-48db-9210-d9609206acb5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_b965b4aa-4734-4cb1-8b73-2d59f3614cea" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7239418c-0835-48db-9210-d9609206acb5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7239418c-0835-48db-9210-d9609206acb5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7239418c-0835-48db-9210-d9609206acb5" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_7239418c-0835-48db-9210-d9609206acb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_78233354-a8c1-4bd1-a09b-02f9031c408e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7239418c-0835-48db-9210-d9609206acb5" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_78233354-a8c1-4bd1-a09b-02f9031c408e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_f9e9eb7c-37ff-443b-9b4f-4257245e2300" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_78233354-a8c1-4bd1-a09b-02f9031c408e" xlink:to="loc_ed_CleanEnergyBusinessesMember_f9e9eb7c-37ff-443b-9b4f-4257245e2300" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_6ac170ac-488a-46ec-9db8-14e67f922aba" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_b965b4aa-4734-4cb1-8b73-2d59f3614cea" xlink:to="loc_srt_ConsolidationItemsAxis_6ac170ac-488a-46ec-9db8-14e67f922aba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_6ac170ac-488a-46ec-9db8-14e67f922aba_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_6ac170ac-488a-46ec-9db8-14e67f922aba" xlink:to="loc_srt_ConsolidationItemsDomain_6ac170ac-488a-46ec-9db8-14e67f922aba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_e0e64ef9-95b1-4467-850c-e11d465a5193" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_6ac170ac-488a-46ec-9db8-14e67f922aba" xlink:to="loc_srt_ConsolidationItemsDomain_e0e64ef9-95b1-4467-850c-e11d465a5193" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationEliminationsMember_18d0bc94-abb8-4c89-a006-cfe34f792fe6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationEliminationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_e0e64ef9-95b1-4467-850c-e11d465a5193" xlink:to="loc_srt_ConsolidationEliminationsMember_18d0bc94-abb8-4c89-a006-cfe34f792fe6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ScheduleICondensedFinancialInformationIncomeandComprehensiveIncomeDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ScheduleICondensedFinancialInformationIncomeandComprehensiveIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ScheduleICondensedFinancialInformationIncomeandComprehensiveIncomeDetails" xlink:type="extended" id="i7741dcdb36234ad6902f7c8bc73afbd6_ScheduleICondensedFinancialInformationIncomeandComprehensiveIncomeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CondensedIncomeStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_49f87cf5-b78b-4ad9-b0ce-e617790839da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_49f87cf5-b78b-4ad9-b0ce-e617790839da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_e8565cca-9e69-4d3b-a42e-5ae412726ff3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_e8565cca-9e69-4d3b-a42e-5ae412726ff3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_17a6b445-b734-4976-8f4e-b209b9ed5b74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxesExcludingIncomeAndExciseTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_TaxesExcludingIncomeAndExciseTaxes_17a6b445-b734-4976-8f4e-b209b9ed5b74" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_f39ad5a3-2ed1-4704-be58-6248606a3856" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_f39ad5a3-2ed1-4704-be58-6248606a3856" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_ee908052-2f0a-4f39-b0ad-7cea18917b9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_InterestExpense_ee908052-2f0a-4f39-b0ad-7cea18917b9f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_0e4dfd22-e9e6-45f4-b91f-9c1acb8a1b12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_0e4dfd22-e9e6-45f4-b91f-9c1acb8a1b12" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_887f4305-ebb2-46fc-8df2-4741605b0aa5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_NetIncomeLoss_887f4305-ebb2-46fc-8df2-4741605b0aa5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_180a66ba-877d-47a9-9ba1-681835ba8e44" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_180a66ba-877d-47a9-9ba1-681835ba8e44" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_36c87a2d-1ad2-4bd4-b9f6-f7298c1b6559" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_EarningsPerShareBasic_36c87a2d-1ad2-4bd4-b9f6-f7298c1b6559" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_193e6408-cdfb-49e6-8229-ee199d0cbbbe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_EarningsPerShareDiluted_193e6408-cdfb-49e6-8229-ee199d0cbbbe" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_a103291d-37cd-4793-9573-277f4a55c0a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_a103291d-37cd-4793-9573-277f4a55c0a8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_793eaf35-0eb9-42d1-8c6e-ec521aabea81" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_793eaf35-0eb9-42d1-8c6e-ec521aabea81" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_f4a6966e-06fa-48ab-ac6f-b28e4869a102" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_f4a6966e-06fa-48ab-ac6f-b28e4869a102" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedIncomeStatementTable_651ff5d9-dbba-4f9a-a381-d99bbf6bf579" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CondensedIncomeStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedIncomeStatementsCaptionsLineItems_cfa887ff-e7f9-4860-8584-71a15ab6251a" xlink:to="loc_srt_CondensedIncomeStatementTable_651ff5d9-dbba-4f9a-a381-d99bbf6bf579" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_81867fd4-3bc4-403b-a880-ec43b0a319a6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedIncomeStatementTable_651ff5d9-dbba-4f9a-a381-d99bbf6bf579" xlink:to="loc_srt_ConsolidatedEntitiesAxis_81867fd4-3bc4-403b-a880-ec43b0a319a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_81867fd4-3bc4-403b-a880-ec43b0a319a6_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_81867fd4-3bc4-403b-a880-ec43b0a319a6" xlink:to="loc_srt_ConsolidatedEntitiesDomain_81867fd4-3bc4-403b-a880-ec43b0a319a6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_6ba8525e-03e0-466b-b40e-8e70d9b62b42" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_81867fd4-3bc4-403b-a880-ec43b0a319a6" xlink:to="loc_srt_ConsolidatedEntitiesDomain_6ba8525e-03e0-466b-b40e-8e70d9b62b42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_4d6d6916-0142-4e5c-bece-e4695a38217a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_6ba8525e-03e0-466b-b40e-8e70d9b62b42" xlink:to="loc_srt_ParentCompanyMember_4d6d6916-0142-4e5c-bece-e4695a38217a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ScheduleICondensedFinancialInformationCashFlowsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ScheduleICondensedFinancialInformationCashFlowsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ScheduleICondensedFinancialInformationCashFlowsDetails" xlink:type="extended" id="i49cb5fdfdc3e4c97ad63f2a0bb924e38_ScheduleICondensedFinancialInformationCashFlowsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CondensedCashFlowStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_6e8bfc2e-32ba-4717-ab1c-6a05affd0959" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_NetIncomeLoss_6e8bfc2e-32ba-4717-ab1c-6a05affd0959" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_EquityInEarningsOfSubsidiaries_181b1c9b-2e4f-4c70-97ca-809340aaa7bf" xlink:href="ed-20221231.xsd#ed_EquityInEarningsOfSubsidiaries"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_ed_EquityInEarningsOfSubsidiaries_181b1c9b-2e4f-4c70-97ca-809340aaa7bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_34b83066-c7f2-4d8d-951e-065286048e42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_34b83066-c7f2-4d8d-951e-065286048e42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDividendsReceived_7a14bdd0-13bf-40b8-b1fb-1e91f7e228ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromDividendsReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_ProceedsFromDividendsReceived_7a14bdd0-13bf-40b8-b1fb-1e91f7e228ec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_f0d467e4-fe8b-41e8-9a27-1e7e466be245" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_f0d467e4-fe8b-41e8-9a27-1e7e466be245" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_92023178-c1e2-4af9-a372-e0c314451ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_f0d467e4-fe8b-41e8-9a27-1e7e466be245" xlink:to="loc_us-gaap_IncreaseDecreaseInDueFromAffiliatesCurrent_92023178-c1e2-4af9-a372-e0c314451ac4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_IncreaseDecreaseInCurrentPortionOfIntercompanyTaxPayable_db1386c8-6736-439c-8891-b71a96a4be24" xlink:href="ed-20221231.xsd#ed_IncreaseDecreaseInCurrentPortionOfIntercompanyTaxPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_f0d467e4-fe8b-41e8-9a27-1e7e466be245" xlink:to="loc_ed_IncreaseDecreaseInCurrentPortionOfIntercompanyTaxPayable_db1386c8-6736-439c-8891-b71a96a4be24" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueToAffiliates_ec3ff5c5-bde5-4577-a29c-087a4e7767bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDueToAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_f0d467e4-fe8b-41e8-9a27-1e7e466be245" xlink:to="loc_us-gaap_IncreaseDecreaseInDueToAffiliates_ec3ff5c5-bde5-4577-a29c-087a4e7767bf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherReceivables_7d4a421d-b00a-4942-ab77-d77ff7f46094" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherReceivables_7d4a421d-b00a-4942-ab77-d77ff7f46094" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_53f55921-2d0d-4aca-bccd-2c8d7b28f7e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_53f55921-2d0d-4aca-bccd-2c8d7b28f7e6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_84591b48-8204-43be-9188-cde7d0983b9a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_84591b48-8204-43be-9188-cde7d0983b9a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_f7f84f6c-9848-4aa7-bef9-d9403fd3acd3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_84591b48-8204-43be-9188-cde7d0983b9a" xlink:to="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_f7f84f6c-9848-4aa7-bef9-d9403fd3acd3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToFundLongtermLoansToRelatedParties_d8763eae-8304-4da4-8d60-9f6d07396bad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToFundLongtermLoansToRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_84591b48-8204-43be-9188-cde7d0983b9a" xlink:to="loc_us-gaap_PaymentsToFundLongtermLoansToRelatedParties_d8763eae-8304-4da4-8d60-9f6d07396bad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_861535bd-0654-4d47-978a-0a259aa86398" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_84591b48-8204-43be-9188-cde7d0983b9a" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_861535bd-0654-4d47-978a-0a259aa86398" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_b9225ea5-b8f9-4fc6-a6dd-4126cff3bebc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_b9225ea5-b8f9-4fc6-a6dd-4126cff3bebc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7efc0fd7-b7d7-4528-a9ed-969ce17fca58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7efc0fd7-b7d7-4528-a9ed-969ce17fca58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_97c94b13-9af1-4b6b-a651-7c27c4d266a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_97c94b13-9af1-4b6b-a651-7c27c4d266a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_31e81d70-87aa-462c-9e1e-27107fe7792d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_31e81d70-87aa-462c-9e1e-27107fe7792d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_a5727c5f-5c81-4c86-889b-6848dab1f532" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_a5727c5f-5c81-4c86-889b-6848dab1f532" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_c4a0b0f9-7785-413e-91ab-fdb5d1ceba44" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_c4a0b0f9-7785-413e-91ab-fdb5d1ceba44" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_85620357-54a6-4b31-b0b0-f2ee3875a397" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_85620357-54a6-4b31-b0b0-f2ee3875a397" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_f5a075df-7d70-4145-9fe2-52215f98c81b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8c7480b9-1c09-46e2-9b22-224613ac2b52" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_f5a075df-7d70-4145-9fe2-52215f98c81b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_f3f68359-6445-4ecf-bc6c-5919bf92befe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_f3f68359-6445-4ecf-bc6c-5919bf92befe" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_d7e2d237-17a2-4938-acea-1a97484dd96a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_d7e2d237-17a2-4938-acea-1a97484dd96a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_4c3af343-4d50-4475-8257-2c3bab19b339" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedCashFlowStatementTable_a590484c-90d3-49ca-ba34-bff4292aa163" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CondensedCashFlowStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedCashFlowStatementsCaptionsLineItems_dd288339-2b55-4c7e-a894-f416de04ecb1" xlink:to="loc_srt_CondensedCashFlowStatementTable_a590484c-90d3-49ca-ba34-bff4292aa163" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_4f63588a-fbc4-40e1-9c47-26471fda38f3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedCashFlowStatementTable_a590484c-90d3-49ca-ba34-bff4292aa163" xlink:to="loc_srt_ConsolidatedEntitiesAxis_4f63588a-fbc4-40e1-9c47-26471fda38f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_4f63588a-fbc4-40e1-9c47-26471fda38f3_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_4f63588a-fbc4-40e1-9c47-26471fda38f3" xlink:to="loc_srt_ConsolidatedEntitiesDomain_4f63588a-fbc4-40e1-9c47-26471fda38f3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_920ea7de-b50f-42e9-8650-3916b6b4a21c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_4f63588a-fbc4-40e1-9c47-26471fda38f3" xlink:to="loc_srt_ConsolidatedEntitiesDomain_920ea7de-b50f-42e9-8650-3916b6b4a21c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_9cd81386-d6af-433b-b344-5fd016cd2397" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_920ea7de-b50f-42e9-8650-3916b6b4a21c" xlink:to="loc_srt_ParentCompanyMember_9cd81386-d6af-433b-b344-5fd016cd2397" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ada89a8e-b2ba-493d-9a22-24b95b0c288b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedCashFlowStatementTable_a590484c-90d3-49ca-ba34-bff4292aa163" xlink:to="loc_dei_LegalEntityAxis_ada89a8e-b2ba-493d-9a22-24b95b0c288b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ada89a8e-b2ba-493d-9a22-24b95b0c288b_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ada89a8e-b2ba-493d-9a22-24b95b0c288b" xlink:to="loc_dei_EntityDomain_ada89a8e-b2ba-493d-9a22-24b95b0c288b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f48b7bef-8ec7-4bbd-bb60-c1536049f691" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ada89a8e-b2ba-493d-9a22-24b95b0c288b" xlink:to="loc_dei_EntityDomain_f48b7bef-8ec7-4bbd-bb60-c1536049f691" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_049998e4-ec4c-4780-8c9f-6d4326630634" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f48b7bef-8ec7-4bbd-bb60-c1536049f691" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_049998e4-ec4c-4780-8c9f-6d4326630634" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_OrangeAndRocklandUtilitiesIncMember_546ee4cf-9862-4adb-b615-3b7920b3e17c" xlink:href="ed-20221231.xsd#ed_OrangeAndRocklandUtilitiesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f48b7bef-8ec7-4bbd-bb60-c1536049f691" xlink:to="loc_ed_OrangeAndRocklandUtilitiesIncMember_546ee4cf-9862-4adb-b615-3b7920b3e17c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CleanEnergyBusinessesMember_ef44144d-7ee7-45df-bf21-282bcb639080" xlink:href="ed-20221231.xsd#ed_CleanEnergyBusinessesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f48b7bef-8ec7-4bbd-bb60-c1536049f691" xlink:to="loc_ed_CleanEnergyBusinessesMember_ef44144d-7ee7-45df-bf21-282bcb639080" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConEdisonTransmissionMember_f2ceda62-0640-45f0-a5ae-1683bf265f48" xlink:href="ed-20221231.xsd#ed_ConEdisonTransmissionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f48b7bef-8ec7-4bbd-bb60-c1536049f691" xlink:to="loc_ed_ConEdisonTransmissionMember_f2ceda62-0640-45f0-a5ae-1683bf265f48" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_b4414e24-63ae-4a35-b530-728ff44ecc64" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedCashFlowStatementTable_a590484c-90d3-49ca-ba34-bff4292aa163" xlink:to="loc_srt_RestatementAxis_b4414e24-63ae-4a35-b530-728ff44ecc64" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_b4414e24-63ae-4a35-b530-728ff44ecc64_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_b4414e24-63ae-4a35-b530-728ff44ecc64" xlink:to="loc_srt_RestatementDomain_b4414e24-63ae-4a35-b530-728ff44ecc64_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_7e4aa7c4-6e93-42b3-89d7-1afddcaa2e60" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_b4414e24-63ae-4a35-b530-728ff44ecc64" xlink:to="loc_srt_RestatementDomain_7e4aa7c4-6e93-42b3-89d7-1afddcaa2e60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAdjustmentMember_0e1ebaf1-0ce8-4b29-a7b1-3cdae2fbe2fd" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RestatementAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_7e4aa7c4-6e93-42b3-89d7-1afddcaa2e60" xlink:to="loc_srt_RestatementAdjustmentMember_0e1ebaf1-0ce8-4b29-a7b1-3cdae2fbe2fd" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ScheduleICondensedFinancialInformationBalanceSheetDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ScheduleICondensedFinancialInformationBalanceSheetDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ScheduleICondensedFinancialInformationBalanceSheetDetails" xlink:type="extended" id="ie94e8c5e1b6b492ebd57849f09d7d85d_ScheduleICondensedFinancialInformationBalanceSheetDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_c66f7bc9-c8c7-44ee-80e6-5574125fb410" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CondensedBalanceSheetStatementsCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_c66f7bc9-c8c7-44ee-80e6-5574125fb410" xlink:to="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:to="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_612d6cc5-05e1-46a3-817c-57d0e499c3db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_612d6cc5-05e1-46a3-817c-57d0e499c3db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_d63b4411-61ad-41e7-9e27-65f31e57af73" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherReceivablesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_d63b4411-61ad-41e7-9e27-65f31e57af73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_9fee5ea9-3fe9-4764-b924-942e4f712868" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_IncomeTaxesReceivable_9fee5ea9-3fe9-4764-b924-942e4f712868" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueFromAffiliateCurrent_e7081702-d3ff-43ae-ad1f-8e33d34656e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueFromAffiliateCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_DueFromAffiliateCurrent_e7081702-d3ff-43ae-ad1f-8e33d34656e7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_e6b4b2f7-74b3-464e-a431-20cdea8994b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_e6b4b2f7-74b3-464e-a431-20cdea8994b0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_170a4542-e70f-4363-b30c-4667604d498d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_OtherAssetsCurrent_170a4542-e70f-4363-b30c-4667604d498d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_1d914f6f-d40a-459c-ab6a-6f411e027003" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_1ad4af94-4cdb-45aa-947c-ba15eefb0fec" xlink:to="loc_us-gaap_AssetsCurrent_1d914f6f-d40a-459c-ab6a-6f411e027003" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermInvestments_b5d749b1-4ca3-429d-ba57-cad18860a49f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:to="loc_us-gaap_LongTermInvestments_b5d749b1-4ca3-429d-ba57-cad18860a49f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_7c1c0eeb-08a6-4853-8986-4af7afbbfd7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:to="loc_us-gaap_Goodwill_7c1c0eeb-08a6-4853-8986-4af7afbbfd7b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4f5e6e7f-fca3-444e-aeaa-fe9fad346ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4f5e6e7f-fca3-444e-aeaa-fe9fad346ce6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_111b6a22-81fd-4a66-a54f-3e57ce45dff0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_111b6a22-81fd-4a66-a54f-3e57ce45dff0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_f0993a13-3a4d-4080-b17d-8e2c0cc406cb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_e5526ee1-1118-4839-b8be-4cf16665a739" xlink:to="loc_us-gaap_Assets_f0993a13-3a4d-4080-b17d-8e2c0cc406cb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_c66f7bc9-c8c7-44ee-80e6-5574125fb410" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_5efe0dbe-6b3a-4ed8-a90c-3d50a003b0b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_LongTermDebtCurrent_5efe0dbe-6b3a-4ed8-a90c-3d50a003b0b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_4f8f362b-438e-4e32-b150-846f94d8fa9a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_ShortTermBorrowings_4f8f362b-438e-4e32-b150-846f94d8fa9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableCurrent_15b71972-68de-4a12-9ee8-5b9edb0129fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_NotesPayableCurrent_15b71972-68de-4a12-9ee8-5b9edb0129fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_19505fca-4bcb-41ae-ab2d-dc1abcb15146" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_AccountsPayableCurrent_19505fca-4bcb-41ae-ab2d-dc1abcb15146" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueToAffiliateCurrent_bd9afe2a-5230-462e-b864-80516a808f16" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueToAffiliateCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_DueToAffiliateCurrent_bd9afe2a-5230-462e-b864-80516a808f16" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrent_ca051e95-efb8-4152-9fd1-25ca9c46027a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TaxesPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_TaxesPayableCurrent_ca051e95-efb8-4152-9fd1-25ca9c46027a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueToAffiliateCurrentAndNoncurrent_f386646b-7d46-400f-b24d-99767d0ae31a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueToAffiliateCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_DueToAffiliateCurrentAndNoncurrent_f386646b-7d46-400f-b24d-99767d0ae31a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_5556a812-720b-4f36-beb5-199b0dde245c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_InterestPayableCurrent_5556a812-720b-4f36-beb5-199b0dde245c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_4c41dc32-2f58-4174-9c78-41d4013df36c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_4c41dc32-2f58-4174-9c78-41d4013df36c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_8725fa41-fac5-46b0-bd13-45ca521e3e33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_44472d93-974a-42d6-be7a-9146fe2dd01e" xlink:to="loc_us-gaap_LiabilitiesCurrent_8725fa41-fac5-46b0-bd13-45ca521e3e33" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_6e36e5ab-d651-4ace-8bb8-9e1cf8709dbf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_6e36e5ab-d651-4ace-8bb8-9e1cf8709dbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_c1b20a40-5689-4dc9-a9ba-01c97b722a59" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:to="loc_us-gaap_Liabilities_c1b20a40-5689-4dc9-a9ba-01c97b722a59" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_970622e4-d236-451b-ab7d-8ef1510fe295" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_970622e4-d236-451b-ab7d-8ef1510fe295" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_f54923ca-781d-455d-93ca-54c3bb0f8f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:to="loc_us-gaap_StockholdersEquityAbstract_f54923ca-781d-455d-93ca-54c3bb0f8f1d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_CommonStockEquity_eeed60ca-c75b-44bf-a61a-8df49c21584a" xlink:href="ed-20221231.xsd#ed_CommonStockEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f54923ca-781d-455d-93ca-54c3bb0f8f1d" xlink:to="loc_ed_CommonStockEquity_eeed60ca-c75b-44bf-a61a-8df49c21584a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_79661f5a-c28e-4967-bf18-d46cc4b9c9a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f54923ca-781d-455d-93ca-54c3bb0f8f1d" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_79661f5a-c28e-4967-bf18-d46cc4b9c9a8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_037a6f9d-55e1-4411-a7b8-7febb827651d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_f54923ca-781d-455d-93ca-54c3bb0f8f1d" xlink:to="loc_us-gaap_StockholdersEquity_037a6f9d-55e1-4411-a7b8-7febb827651d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_10ca0e73-5bf2-4e16-91a2-7057d2ccc61f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_cebf4c29-960f-4069-961e-780a054b3585" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_10ca0e73-5bf2-4e16-91a2-7057d2ccc61f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CondensedBalanceSheetStatementTable_a2dd246a-fdde-4f94-a516-83bca5ce1b28" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CondensedBalanceSheetStatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_CondensedBalanceSheetStatementsCaptionsLineItems_c66f7bc9-c8c7-44ee-80e6-5574125fb410" xlink:to="loc_srt_CondensedBalanceSheetStatementTable_a2dd246a-fdde-4f94-a516-83bca5ce1b28" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_ea55a1c5-ac67-438b-8df7-d7392283fb65" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_CondensedBalanceSheetStatementTable_a2dd246a-fdde-4f94-a516-83bca5ce1b28" xlink:to="loc_srt_ConsolidatedEntitiesAxis_ea55a1c5-ac67-438b-8df7-d7392283fb65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_ea55a1c5-ac67-438b-8df7-d7392283fb65_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_ea55a1c5-ac67-438b-8df7-d7392283fb65" xlink:to="loc_srt_ConsolidatedEntitiesDomain_ea55a1c5-ac67-438b-8df7-d7392283fb65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_df4705ce-9a3b-441c-b779-d3dc75791394" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_ea55a1c5-ac67-438b-8df7-d7392283fb65" xlink:to="loc_srt_ConsolidatedEntitiesDomain_df4705ce-9a3b-441c-b779-d3dc75791394" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_4ebdccc8-caea-4aba-ba27-b5043d6ffdcb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ParentCompanyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_df4705ce-9a3b-441c-b779-d3dc75791394" xlink:to="loc_srt_ParentCompanyMember_4ebdccc8-caea-4aba-ba27-b5043d6ffdcb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.coned.com/role/ScheduleIIValuationandQualifyingAccountsDetails" xlink:type="simple" xlink:href="ed-20221231.xsd#ScheduleIIValuationandQualifyingAccountsDetails"/>
  <link:definitionLink xlink:role="http://www.coned.com/role/ScheduleIIValuationandQualifyingAccountsDetails" xlink:type="extended" id="i7d4fbbaaf67b46ba820716279af635d7_ScheduleIIValuationandQualifyingAccountsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_becca4c5-14fd-4e7f-8742-48dca8b0a0e3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_5a96db8d-9fdf-474b-ae41-68ada93c1d80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_becca4c5-14fd-4e7f-8742-48dca8b0a0e3" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_5a96db8d-9fdf-474b-ae41-68ada93c1d80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_0300dfed-96b7-47cf-84c7-f1c613c50d02" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_5a96db8d-9fdf-474b-ae41-68ada93c1d80" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_0300dfed-96b7-47cf-84c7-f1c613c50d02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_e031512b-02d4-4b18-8d15-461c766d55a9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_5a96db8d-9fdf-474b-ae41-68ada93c1d80" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_e031512b-02d4-4b18-8d15-461c766d55a9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts_a4b68363-02ff-48f0-90dd-478aaa1167c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_5a96db8d-9fdf-474b-ae41-68ada93c1d80" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts_a4b68363-02ff-48f0-90dd-478aaa1167c0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_b75c22d6-e5da-4613-a456-d6012072ce89" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesDeductions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_5a96db8d-9fdf-474b-ae41-68ada93c1d80" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_b75c22d6-e5da-4613-a456-d6012072ce89" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_3b678f2a-7630-43c0-a118-5476d24e4626" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5a3d6cff-f32a-43c5-aaa3-93a4efb609c7" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_becca4c5-14fd-4e7f-8742-48dca8b0a0e3" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5a3d6cff-f32a-43c5-aaa3-93a4efb609c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_a8474eae-ada3-4f28-ad29-cbb9123a28d1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5a3d6cff-f32a-43c5-aaa3-93a4efb609c7" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_a8474eae-ada3-4f28-ad29-cbb9123a28d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_a8474eae-ada3-4f28-ad29-cbb9123a28d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_a8474eae-ada3-4f28-ad29-cbb9123a28d1" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_a8474eae-ada3-4f28-ad29-cbb9123a28d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_dde07515-ae9b-456e-befd-233535557194" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_a8474eae-ada3-4f28-ad29-cbb9123a28d1" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_dde07515-ae9b-456e-befd-233535557194" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForCreditLossMember_77f2c5c3-7e0b-4ba2-b837-d5e6ca44c702" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForCreditLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_dde07515-ae9b-456e-befd-233535557194" xlink:to="loc_us-gaap_AllowanceForCreditLossMember_77f2c5c3-7e0b-4ba2-b837-d5e6ca44c702" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_02331899-5c5f-4883-982d-f9e013b873c3" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_5a3d6cff-f32a-43c5-aaa3-93a4efb609c7" xlink:to="loc_dei_LegalEntityAxis_02331899-5c5f-4883-982d-f9e013b873c3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_02331899-5c5f-4883-982d-f9e013b873c3_default" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_02331899-5c5f-4883-982d-f9e013b873c3" xlink:to="loc_dei_EntityDomain_02331899-5c5f-4883-982d-f9e013b873c3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d1e2fdf2-a145-4329-bcd6-fdb44e073472" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_02331899-5c5f-4883-982d-f9e013b873c3" xlink:to="loc_dei_EntityDomain_d1e2fdf2-a145-4329-bcd6-fdb44e073472" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d8270d0f-e3af-4015-bfb6-fcca6ddbacac" xlink:href="ed-20221231.xsd#ed_ConsolidatedEdisonCompanyofNewYorkInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d1e2fdf2-a145-4329-bcd6-fdb44e073472" xlink:to="loc_ed_ConsolidatedEdisonCompanyofNewYorkInc.Member_d8270d0f-e3af-4015-bfb6-fcca6ddbacac" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_LiabilitiesCurrent" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_us-gaap_LiabilitiesCurrent" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="loc_us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_ed_InterestExpenseIncomeOtherNet_f0b6ad4d-640f-41cd-a4fa-d913b19dbbef" xlink:href="ed-20221231.xsd#ed_InterestExpenseIncomeOtherNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_ed_InterestExpenseIncomeOtherNet_f0b6ad4d-640f-41cd-a4fa-d913b19dbbef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_Assets" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
