Filed Pursuant to Rule 424(b)(2)

Registration No. 333-226538

CALCULATION OF REGISTRATION FEE

PROSPECTUS SUPPLEMENT

(To Prospectus dated August 2, 2018)

10,100,000 Shares

Consolidated Edison, Inc.

Common Shares

We are offering 10,100,000 of our common shares (par value $0.10 per share) (the “offering”).

Our common shares are listed on the New York Stock Exchange LLC (the “NYSE”) under the symbol “ED.” On June 14, 2021, the closing price of our common shares on the NYSE was $77.75 per share.

Investing in our common shares involves risks. See “Risk Factors” on page S-6 of this prospectus supplement.

The underwriter has agreed to purchase our common shares from us at a price of $76.78 per share, which will result in $775,478,000 of proceeds to us (before deducting our estimated offering expenses). The underwriter may offer our common shares in transactions on the NYSE, in the over-the counter market or through negotiated transactions at market prices or at negotiated prices. See “Underwriting (Conflicts of Interest).”

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The common shares will be ready for delivery on or about June 18, 2021.

Barclays

The date of this prospectus supplement is June 15, 2021.

TABLE OF CONTENTS

Prospectus Supplement

Prospectus

This document is in two parts. The first part is the prospectus supplement, which describes the specific terms of the common shares subject to the offering and certain other matters relating to us and our financial condition. The second part, the accompanying prospectus, gives more general information about securities we may offer from time to time, some of which does not apply to the common shares subject to the offering. Generally, when we refer to the prospectus, we are referring to both parts of this document combined. To the extent information in this prospectus supplement differs from information in the accompanying prospectus, you should rely on the information in this prospectus supplement.

You should rely only on the information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus, in any related free writing prospectus filed by us with the Securities and Exchange Commission (the “Commission”), and in any communication from us or the underwriter specifying the final terms of the offering. We have not, and the underwriter has not, authorized anyone else to provide you with any different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriter is not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information contained in or incorporated by reference in this prospectus supplement, the accompanying prospectus or any free writing prospectus authorized by us is accurate as of any date other than the date of the document containing the information or such other date as may be specified therein. Our business, financial condition, results of operations and cash flows may have changed since those dates.

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PROSPECTUS SUPPLEMENT SUMMARY

In this prospectus supplement, the words “Con Edison,” “we,” “our” and “us” refer to Consolidated Edison, Inc.

The following summary contains basic information about the offering. It may not contain all of the information that is important to you. The “Description of Common Shares” section of the accompanying prospectus contains more detailed information regarding the common shares. The following summary is qualified in its entirety by reference to the more detailed information appearing elsewhere or incorporated by reference in this prospectus supplement and in the accompanying prospectus.

Con Edison

Con Edison, incorporated in New York State in 1997, is a holding company that owns all of the outstanding common stock of Consolidated Edison Company of New York, Inc. (“CECONY” or “Con Edison of New York”), Orange and Rockland Utilities, Inc. (“O&R”), Con Edison Clean Energy Businesses, Inc. and Con Edison Transmission, Inc. Our principal executive offices are located at 4 Irving Place, New York, New York 10003, and our telephone number is (212) 460-4600.

Con Edison seeks to provide shareholder value through continued dividend growth, supported by earnings growth in regulated utilities and contracted electric and gas assets. The company invests to provide reliable, resilient, safe and clean energy critical for New York City’s growing economy. The company is an industry-leading owner and operator of contracted, large-scale solar generation in the United States. Con Edison is a responsible neighbor, helping the communities it serves become more sustainable.

CECONY

CECONY provides electric service to approximately 3.5 million customers in all of New York City (except a part of Queens) and most of Westchester County, an approximately 660 square mile service area with a population of more than nine million. CECONY delivers gas to approximately 1.1 million customers in Manhattan, the Bronx, parts of Queens and most of Westchester County. CECONY operates the largest steam distribution system in the United States by producing and delivering approximately 17,405 million pounds of steam annually to approximately 1,571 customers in parts of Manhattan.

O&R

O&R and its utility subsidiary, Rockland Electric Company, provide electric service to approximately 0.3 million customers in southeastern New York and northern New Jersey, an approximately 1,300 square mile service area. O&R delivers gas to over 0.1 million customers in southeastern New York.

Clean Energy Businesses

Con Edison Clean Energy Businesses, Inc., through its subsidiaries, develops, owns and operates renewable and sustainable energy infrastructure projects and provides energy-related products and services to wholesale and retail customers.

Con Edison Transmission

Con Edison Transmission, Inc. invests in electric transmission facilities and holds investments in gas pipeline and storage facilities through its wholly-owned subsidiaries, Consolidated Edison Transmission, LLC (“CET Electric”) and Con Edison Gas Pipeline and Storage, LLC (“CET Gas”). CET Electric owns a

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45.7 percent interest in New York Transco LLC, which owns and has been selected to build additional electric transmission assets in New York. CET Gas owns, through subsidiaries, a 50 percent interest in Stagecoach Gas Services, LLC (“Stagecoach”), a joint venture that owns and operates an existing gas pipeline and storage business located in northern Pennsylvania and the southern tier of New York. In May 2021, a CET Gas subsidiary entered into a purchase and sale agreement pursuant to which it agreed to sell its interest in Stagecoach (see our Current Report on Form 8-K dated May 31, 2021, which is incorporated by reference herein). Also, CET Gas and CECONY own 71.2 percent and 28.8 percent interests, respectively, in Honeoye Storage Corporation, which owns and operates a gas storage facility in upstate New York. In addition, CET Gas owns an 11.2 percent interest (that is expected to be reduced to 8.5 percent based on the current project cost estimate and CET Gas’ capping of its cash contributions to the joint venture) in Mountain Valley Pipeline LLC, a joint venture developing a proposed 300-mile gas transmission project in West Virginia and Virginia.

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The Offering

(1) The number of our common shares to be outstanding immediately after the offering is based on 342,971,802 common shares outstanding as of June 14, 2021.

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WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the Commission and these filings are publicly available through the Commission’s website (http://www.sec.gov).

This prospectus supplement and the accompanying prospectus, which includes information incorporated by reference (see “Incorporation by Reference,” below), is part of a registration statement on Form S-3 we have filed with the Commission relating to the common shares offered hereby. As permitted by the Commission’s rules, this prospectus supplement and the accompanying prospectus do not contain all of the information included in the registration statement and the accompanying exhibits and schedules we file with the Commission. You should read the registration statement and the exhibits and schedules for more complete information about us and our common shares.

The registration statement, exhibits and schedules are also available through the Commission’s website.

You may obtain a free copy of our filings with the Commission by writing or telephoning us at our principal executive offices: Corporate Secretary, Consolidated Edison, Inc., 4 Irving Place, New York, New York 10003 (Telephone No.: 212-460-3192). The filings are also available through the Investor Information section of our website: www.conedison.com. The information on our website is not incorporated by reference into this prospectus supplement and the accompanying prospectus, and you should not consider it a part of this prospectus supplement and the accompanying prospectus.

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INCORPORATION BY REFERENCE

The Commission allows us to “incorporate by reference” into this prospectus supplement and the accompanying prospectus information we file with the Commission. This means that we can disclose important information to you by referring you to documents that we have previously filed with the Commission or documents that we will file with the Commission in the future. The information we incorporate by reference is considered to be an important part of this prospectus supplement and the accompanying prospectus. Information that we file later with the Commission that is incorporated by reference into this prospectus supplement and the accompanying prospectus will automatically update and supersede this information.

We are incorporating by reference into this prospectus supplement and the accompanying prospectus the following Con Edison documents that we have filed with the Commission:

We are also incorporating by reference into this prospectus supplement and the accompanying prospectus any additional documents that we may file with the Commission under Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) (other than those “furnished” pursuant to Item 2.02 or Item 7.01 in any Current Report on Form 8-K or other information deemed to have been “furnished” rather than filed in accordance with the Commission’s rules) prior to the termination of the offering.

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RISK FACTORS

Our businesses are influenced by many factors that are difficult to predict, that are often beyond our control and that involve uncertainties that may materially affect actual operating results, cash flows and financial condition. These risk factors include those described in the documents that are incorporated by reference in this prospectus supplement and the accompanying prospectus (see “Incorporation by Reference,” above), and could include additional uncertainties not presently known to us or that we currently do not consider to be material. Before making an investment decision, you should carefully consider these risks as well as any other information we include or incorporate by reference in this prospectus supplement and the accompanying prospectus.

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This prospectus supplement, the accompanying prospectus, and the information incorporated by reference herein and therein contains forward-looking statements that are intended to qualify for the safe-harbor provisions of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Exchange Act. Forward-looking statements are statements of future expectation and not facts. Words such as “forecasts,” “expects,” “estimates,” “anticipates,” “intends,” “believes,” “plans,” “will,” “target,” “guidance” and similar expressions identify forward-looking statements. The forward-looking statements reflect information available and assumptions at the time the statements are made, and accordingly speak only as of that time. Actual results or developments might differ materially from those included in the forward-looking statements because of various factors such as those identified in reports Con Edison has filed with the Commission, including but not limited to:

Con Edison assumes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

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USE OF PROCEEDS

The net proceeds (after deducting our estimated offering expenses) from the sale of the common shares in this offering are estimated to be approximately $775,028,000. The net proceeds from the sale of the common shares are expected to be invested by us in our regulated utility subsidiary, CECONY, for funding of its construction expenditures and for its other general corporate purposes.

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CERTAIN UNITED STATES FEDERAL INCOME AND ESTATE TAX CONSEQUENCES

FOR NON-U.S. HOLDERS

The following summary discusses certain material U.S. federal income and estate tax consequences to “non-U.S. holders” relating to the purchase, ownership and disposition of our common shares. As used herein, a non-U.S. holder means a beneficial owner of our common shares that is not a “U.S. Person” (as defined below) or a partnership for U.S. federal income tax purposes. This summary is based upon the provisions of the U.S. Internal Revenue Code of 1986, as amended (the “Code”), U.S. Treasury regulations, rulings and judicial decisions, all as in effect on the date hereof. Those authorities may be changed, perhaps retroactively, so as to result in U.S. federal income tax consequences different from those discussed below. There can be no assurance that the Internal Revenue Service (the “IRS”) will agree with the statements herein. A “U.S. Person” means a beneficial owner of our common shares that is for U.S. federal income tax purposes:

This summary deals only with our common shares held as capital assets within the meaning of section 1221 of the Code (generally, property held for investment). This summary does not address all of the U.S. federal income and estate tax consequences that may be relevant to a non-U.S. holder in light of such holder’s own particular circumstances, nor does it deal with special situations, such as:

If a partnership (or other entity or arrangement treated as a partnership) holds our common shares, the tax treatment of a partner in the partnership generally will depend upon the status of the partner and the status and activities of the partnership. Prospective investors that are partnerships (or entities or arrangements treated as partnerships for U.S. federal income tax purposes) should consult their own tax advisers regarding the U.S. federal income and estate tax considerations to them and their partners of holding our common shares.

THIS DISCUSSION IS FOR GENERAL PURPOSES ONLY. INVESTORS CONSIDERING THE PURCHASE OF OUR COMMON SHARES SHOULD CONSULT THEIR OWN TAX ADVISERS

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CONCERNING THE U.S. FEDERAL AND ESTATE TAX CONSEQUENCES TO THEM IN LIGHT OF THEIR OWN PARTICULAR CIRCUMSTANCES, AS WELL AS ANY TAX CONSEQUENCES ARISING UNDER THE LAWS OF ANY OTHER TAXING JURISDICTION, THE EFFECT OF ANY CHANGES IN APPLICABLE TAX LAW, AND THEIR ENTITLEMENT TO BENEFITS UNDER AN APPLICABLE INCOME TAX TREATY.

Dividends on Common Shares

If we make a distribution of cash or other property (other than certain pro rata distributions of our common shares) in respect of our common shares, the distribution will be treated as a dividend to the extent it is paid from our current or accumulated earnings and profits (as determined under U.S. federal income tax principles). If the amount of a distribution exceeds our current and accumulated earnings and profits, such excess first will be treated as a tax-free return of capital to the extent of the non-U.S. holder’s adjusted tax basis in our common shares, and thereafter will be treated as capital gain. Distributions treated as dividends on our common shares held by a non-U.S. holder generally will be subject to U.S. federal withholding tax at a rate of 30 percent, or at a lower rate if provided by an applicable income tax treaty and the non-U.S. holder has provided the documentation required to claim benefits under such treaty. Generally, to claim the benefits of an income tax treaty, a non-U.S. holder will be required to provide a properly executed IRS Form W-8BEN or Form W-8BEN-E (or appropriate substitute or successor form) certifying its entitlement to benefits under the treaty.

If, however, a dividend is effectively connected with the conduct of a trade or business in the United States by the non-U.S. holder (and, if an applicable tax treaty so provides, is attributable to a permanent establishment or fixed base maintained by the non-U.S. holder in the United States), the dividend will not be subject to the 30 percent U.S. federal withholding tax (provided the non-U.S. holder has provided the appropriate documentation, generally an IRS Form W-8ECI, to the withholding agent), but the non-U.S. holder generally will be subject to U.S. federal income tax in respect of the dividend on a net income basis, and at graduated rates, in substantially the same manner as U.S. Persons. Dividends received by a non-U.S. holder that is a corporation for U.S. federal income tax purposes and which are effectively connected with the conduct of a U.S. trade or business may also be subject to a branch profits tax at the rate of 30 percent (or a lower rate if provided by an applicable tax treaty).

A non-U.S. holder that is eligible for a reduced rate of U.S. federal withholding tax under an income tax treaty may obtain a refund or credit of any excess amounts withheld by timely filing an appropriate claim for a refund together with the required information with the IRS.

Sale or Other Disposition of Common Shares

Subject to the below discussion of backup withholding, a non-U.S. holder generally will not be subject to U.S. federal income or withholding tax on gain realized on the sale or other disposition of our common shares unless:

Gain realized by such non-U.S. holder described in the first bullet above will be subject to a flat 30 percent tax (or such lower tax rate specified by an applicable income tax treaty), which may be offset by certain U.S. source capital losses.

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Gain realized by a non-U.S. holder that is effectively connected with such non-U.S. holder’s conduct of a trade or business in the United States generally will be subject to U.S. federal income tax on a net income basis, and at graduated rates, in substantially the same manner as a U.S. Person (except as provided by an applicable tax treaty). In addition, if such non-U.S. holder is a corporation for U.S. federal income tax purposes, it may also be subject to a branch profits tax at the rate of 30 percent (or a lower rate if provided by an applicable tax treaty).

Generally, a corporation is a USRPHC if the fair market value of its United States real property interests equals or exceeds 50 percent of the sum of the fair market value of its worldwide real property interests and its other assets used or held for use in a trade or business (all as determined for U.S. federal income tax purposes). Given the lack of clear guidance in this area, there can be no assurances that we are not or will not become a USRPHC. If, however, we were a USRPHC during the applicable testing period, non-U.S. holders owning (directly or indirectly) more than 5 percent of our common shares will be subject to different tax consequences and should consult their own tax advisers. U.S. federal income tax will not apply to gain realized on the sale or disposition of our common shares by a non-U.S. holder that owns (directly or indirectly) 5 percent or less of our common shares so long as our common shares are “regularly traded on an established securities market” (such as the NYSE) as defined under applicable Treasury regulations. However, we can provide no assurance that our common shares will remain regularly traded.

Information Reporting and Backup Withholding

Dividends and proceeds from the sale or other taxable disposition of our common shares are potentially subject to backup withholding. In general, backup withholding will not apply to dividends on, or proceeds from the disposition of, our common shares paid by us or our paying agents, in their capacities as such, to a non-U.S. holder if the holder has provided the required certification (generally on Form W-8BEN or Form W-8BEN-E) that it is a non-U.S. holder and neither we nor our paying agent has actual knowledge (or reason to know) that the holder is a U.S. Person.

Generally, the amount of dividends on our common shares paid to a non-U.S. holder and the amount of any tax withheld from such dividends must be reported annually to the IRS and to the non-U.S. holder. Copies of these information returns may be made available by the IRS to the tax authorities of the country in which the non-U.S. holder is a resident under the provisions of an applicable tax treaty or agreement.

Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules will be allowed as a refund or a credit against a non-U.S. holder’s U.S. federal income tax liability, provided the required information is furnished on a timely basis to the IRS.

Non-U.S. holders should consult their tax advisers regarding the application of the information reporting and backup withholding rules to them.

FATCA

The Foreign Account Tax Compliance Act provisions of the Hiring Incentives to Restore Employment Act and Treasury regulations thereunder, commonly referred to as “FATCA”, generally, will impose a U.S. federal withholding tax of 30 percent on certain types of payments, including payments of U.S. source interest or dividends, made to (i) “foreign financial institutions” unless they agree to collect and disclose to the IRS information regarding their direct and indirect U.S. account holders or (ii) certain “non-financial foreign entities” unless they certify that they do not have any “substantial United States owners” (as defined in the Code) or furnish identifying information regarding each substantial United States owner (generally by providing an IRS Form W-8BEN or Form W-8BEN-E). In certain circumstances, the relevant foreign financial institution or non-financial foreign entity may qualify for an exemption from these rules, which exemption is typically evidenced by providing appropriate documentation (such as an IRS Form W-8BEN or Form W-8BEN-E). In addition, an intergovernmental agreement between the United States and the jurisdiction of a foreign financial institution may modify the information reporting and related rules under FATCA.

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Non-U.S. holders are urged to consult their tax advisers regarding FATCA and the application of these requirements to their investment in the common shares.

U.S. Federal Estate Tax

Common shares owned or treated as owned by an individual who is not a citizen or resident of the United States (as specifically defined for U.S. federal estate tax purposes) at the time of death will be included in the individual’s gross estate for U.S. federal estate tax purposes and may be subject to U.S. federal estate tax unless an applicable estate tax treaty provides otherwise.

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UNDERWRITING

Barclays Capital Inc. is acting as the underwriter in connection with this offering. We have entered into an underwriting agreement with the underwriter. Subject to the terms and conditions of the underwriting agreement, the underwriter has agreed to purchase from us 10,100,000 common shares at a price of $76.78 per share.

The underwriter has agreed to purchase all of the common shares sold under the underwriting agreement if any of these shares are purchased. Our common shares are offered subject to a number of conditions, including, among others, receipt and acceptance of our common shares by the underwriter and the underwriter’s right to reject orders in whole or in part.

We have agreed to indemnify the underwriter against certain liabilities, including liabilities under the Securities Act, or to contribute to payments the underwriter may be required to make in respect of any of these liabilities.

The expenses of the offering are estimated to be approximately $450,000 and are payable by us.

The underwriter proposes to offer the common shares offered hereby from time to time for sale in one or more transactions on the NYSE, in the over-the-counter market, through negotiated transactions or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or at negotiated prices, subject to receipt and acceptance by it and subject to its right to reject any order in whole or in part. In connection with the sale of the common shares offered hereby, the underwriter may be deemed to have received compensation in the form of an underwriting discount. The underwriter may effect such transactions by selling the common shares to or through dealers and such dealers may receive compensation in the form of discounts, concessions or commissions from the underwriter and/or purchasers of common shares for whom they may act as agents or to whom they may sell as principal.

Lock-Up Agreement

We have agreed that, subject to certain exceptions described below, without the prior written consent of the underwriter, we will not, directly or indirectly, during the 90-day period after the date of the underwriting agreement, issue, sell, offer or contract to sell, grant any option for the sale of, or otherwise dispose of, our common shares. This agreement does not apply to issuances pursuant to the underwriting agreement, upon conversions of our outstanding securities in accordance with their terms, or in connection with our employee stock or dividend reinvestment plans.

Electronic Prospectus

This prospectus supplement and the accompanying prospectus may be made available in electronic format on the website maintained by the underwriter, or selling group members, if any, participating in the offering. The underwriter may agree to allocate a number of shares to the selling group members for sale to their online brokerage account holders. Internet distributions will be allocated by the underwriter to the selling group members that may make Internet distributions on the same basis as other allocations.

NYSE Listing

Our common shares are listed on the NYSE under the symbol “ED.” We intend to list the common shares offered hereby on the NYSE.

Other Relationships

The underwriter and its affiliates are full service financial institutions engaged in various activities, which may include, among other activities, securities trading and underwriting, commercial and investment banking,

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financial advisory, corporate trust, investment management, investment research, principal investment, hedging, financing and brokerage activities. In the ordinary course of its business, the underwriter and/or its affiliates have in the past and may in the future provide us and our affiliates with financial advisory and other services for which it has and in the future will receive customary fees.

The underwriter or its affiliates have lending relationships with us and/or our subsidiaries. In addition, in the ordinary course of its business activities, the underwriter and/or its affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for its own account and for the accounts of its customers. Such investments and securities activities may involve securities and/or instruments of ours or our subsidiaries.

The underwriter and its affiliates may also make investment recommendations and/or publish or express independent research views in respect of such securities or financial instruments and may hold, or recommend to clients that they acquire, long and/or short positions in such securities and instruments.

NOTICES TO INVESTORS

No Public Offering Outside the United States

Other than in the United States, no action has been taken by us or the underwriter that would permit a public offering of the securities offered by this prospectus supplement and the accompanying prospectus in any jurisdiction where action for that purpose is required. The securities offered by this prospectus supplement and the accompanying prospectus may not be offered or sold, directly or indirectly, nor may this prospectus supplement and the accompanying prospectus or any other offering material or advertisements in connection with the offer and sale of any such securities be distributed or published in any jurisdiction, except under circumstances that will result in compliance with the applicable rules and regulations of that jurisdiction. Persons into whose possession this prospectus supplement and the accompanying prospectus comes are advised to inform themselves about and to observe any restrictions relating to the offering and the distribution of this prospectus supplement and the accompanying prospectus. This prospectus supplement and the accompanying prospectus do not constitute an offer to sell or a solicitation of an offer to buy any securities offered by this prospectus supplement and the accompanying prospectus in any jurisdiction in which such an offer or a solicitation is unlawful.

European Economic Area

This prospectus supplement has been prepared on the basis that any offer of common shares in any Member State of the European Economic Area (the “EEA”) (each, a “Relevant State”) will be made pursuant to an exemption under the Prospectus Regulation from the requirement to publish a prospectus for offers of common shares. Accordingly any person making or intending to make an offer in that Relevant State of common shares which are the subject of the offering contemplated in this prospectus supplement and the accompanying prospectus may only do so in circumstances in which no obligation arises for us or the underwriter to publish a prospectus pursuant to Article 1 of the Prospectus Regulation in relation to such offer. Neither we nor the underwriter have authorised, nor do they authorise, the making of any offer of common shares in circumstances in which an obligation arises for us or the underwriter to publish a prospectus for such offer. Neither we nor the underwriter has authorised, nor do they authorise, the making of any offer of common shares through any financial intermediary, other than offers made by the underwriter, which constitute the final placement of the common shares contemplated in this prospectus supplement and the accompanying prospectus.

In relation to each Relevant State, the underwriter has represented and agreed that with effect from and including the date on which the Prospectus Regulation was implemented in that Relevant State (the “Relevant Implementation Date”) it has not made and will not make an offer of common shares which are the subject of the offering contemplated by this prospectus supplement and the accompanying prospectus to the public in that

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Relevant State, except that it may, with effect from and including the Relevant Implementation Date, make an offer of such common shares to the public in that Relevant State:

(a) to any legal entity which is a qualified investor as defined in the Prospectus Regulation;

(b) to fewer than 150 natural or legal persons (other than qualified investors as defined in the Prospectus Regulation), as permitted under the Prospectus Regulation, subject to obtaining the prior consent of the underwriter nominated by us for any such offer; or

(c) in any other circumstances falling within Article 1(4) of the Prospectus Regulation,

provided that no such offer of common shares shall require us or the underwriter to publish a prospectus pursuant to Article 23 of the Prospectus Regulation.

Each person in a Relevant State who receives any communication in respect of, or who acquires any common shares under, the offer to the public contemplated in this prospectus supplement and the accompanying prospectus will be deemed to have represented, warranted and agreed to and with the underwriter and us that:

(a) it is a qualified investor within the meaning of the law in that Relevant State implementing Article 2(e) of the Prospectus Regulation; and

(b) in the case of any common shares acquired by it as a financial intermediary, as that term is used in Article 1(4) of the Prospectus Regulation, (i) the common shares acquired by it in the offer have not been acquired on behalf of, nor have they been acquired with a view to their offer or resale to, persons in any Relevant State other than qualified investors, as that term is defined in the Prospectus Regulation, or in circumstances in which the prior consent of the underwriter has been given to the offer or resale; or (ii) where common shares have been acquired by it on behalf of persons in any Relevant State other than qualified investors, the offer of those common shares to it is not treated under the Prospectus Regulation as having been made to such persons.

For the purposes of this provision: (a) the expression “an offer to the public” in relation to any common shares in any Relevant State means the communication in any form and by any means of sufficient information on the terms of the offer and the common shares to be offered so as to enable an investor to decide to purchase or subscribe for the common shares, as the same may be varied in that Relevant State by any measure implementing the Prospectus Regulation in that Relevant State; and (b) the expression “Prospectus Regulation” means Regulation (EU) 2017/1129.

United Kingdom

The common shares are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the United Kingdom (“UK”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client, as defined in point (8) of Article 2 of Regulation (EU) No 2017/565 as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018 (as amended, “EUWA”); (ii) a customer within the meaning of the provisions of the Financial Services and Markets Act 2000 (as amended, the “FSMA”) and any rules or regulations made under the FSMA to implement Directive (EU) 2016/97, where that customer would not qualify as a professional client, as defined in point (8) of Article 2(1) of Regulation (EU) No 600/2014 as it forms part of domestic law by virtue of the EUWA; or (iii) not a qualified investor as defined in Article 2 of Regulation 2017/1129/EU as it forms part of domestic law by virtue of the EUWA (the “UK Prospectus Regulation”). Consequently no key information document required by Regulation (EU) No 1286/2014 as it forms part of domestic law by virtue of the EUWA (the “UK PRIIPs Regulation”) for offering or selling the common shares or otherwise making them available to retail investors in the UK has been prepared and therefore offering or selling the common shares or otherwise making them available to any retail investor in the UK may be unlawful under the UK PRIIPs Regulation. This prospectus supplement and the accompanying prospectus have been prepared on the basis that any offer of common shares in the United Kingdom will be made pursuant to an exemption under the UK Prospectus Regulation from the requirement to publish a prospectus. This prospectus supplement and the accompanying prospectus are not prospectuses for the purposes of the UK Prospectus Regulation.

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For the purposes of this provision, the expression an “offer to the public” in relation to any common shares in the United Kingdom means the communication in any form and by any means of sufficient information on the terms of the offer and any common shares to be offered so as to enable an investor to decide to purchase any common shares.

In the United Kingdom, this prospectus supplement and the accompanying prospectus are being distributed only to, and is directed only at, and any offer subsequently made may only be directed at persons who are “qualified investors” (as defined in the UK Prospectus Regulation) (i) who have professional experience in matters relating to investments falling within Article 19 (5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the “Financial Promotion Order”) and/or (ii) who are high net worth companies (or persons to whom it may otherwise be lawfully communicated) falling within Article 49(2)(a) to (d) of the Financial Promotion Order (all such persons together being referred to as “relevant persons”). This prospectus supplement and accompanying prospectus must not be acted on or relied on in the United Kingdom by persons who are not relevant persons. In the United Kingdom, any investment or investment activity to which this prospectus supplement and accompanying prospectus relates is only available to, and will be engaged in with, relevant persons.

Japan

Our common shares have not been and will not be registered under the Financial Instruments and Exchange Law of Japan (Law No. 25 of 1948, as amended) and, accordingly, will not be offered or sold, directly or indirectly, in Japan, or for the benefit of any Japanese Person or to others for re-offering or resale, directly or indirectly, in Japan or to any Japanese Person, except in compliance with all applicable laws, regulations and ministerial guidelines promulgated by relevant Japanese governmental or regulatory authorities in effect at the relevant time. For the purposes of this paragraph, “Japanese Person” shall mean any person resident in Japan, including any corporation or other entity organized under the laws of Japan.

Australia

No placement document, prospectus, product disclosure statement or other disclosure document has been lodged with the Australian Securities and Investments Commission (“ASIC”), in relation to the offering. This prospectus supplement and accompanying prospectus does not constitute a prospectus, product disclosure statement or other disclosure document under the Corporations Act 2001 (the “Corporations Act”), and does not purport to include the information required for a prospectus, product disclosure statement or other disclosure document under the Corporations Act.

Any offer in Australia of the common shares may only be made to persons (the “Exempt Investors”) who are “sophisticated investors” (within the meaning of section 708(8) of the Corporations Act), “professional investors” (within the meaning of section 708(11) of the Corporations Act) or otherwise pursuant to one or more exemptions contained in section 708 of the Corporations Act so that it is lawful to offer the common shares without disclosure to investors under Chapter 6D of the Corporations Act.

The common shares applied for by Exempt Investors in Australia must not be offered for sale in Australia in the period of 12 months after the date of allotment under the offering, except in circumstances where disclosure to investors under Chapter 6D of the Corporations Act would not be required pursuant to an exemption under section 708 of the Corporations Act or otherwise or where the offer is pursuant to a disclosure document which complies with Chapter 6D of the Corporations Act. Any person acquiring shares must observe such Australian on-sale restrictions.

This prospectus contains general information only and does not take account of the investment objectives, financial situation or particular needs of any particular person. It does not contain any securities recommendations or financial product advice. Before making an investment decision, investors need to consider

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whether the information in this prospectus is appropriate to their needs, objectives and circumstances, and, if necessary, seek expert advice on those matters.

Canada

The common shares may be sold in Canada only to purchasers purchasing, or deemed to be purchasing, as principal that are accredited investors, as defined in National Instrument 45-106 Prospectus Exemptions or subsection 73.3(1) of the Securities Act (Ontario), and are permitted clients, as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations. Any resale of the common shares must be made in accordance with an exemption from, or in a transaction not subject to, the prospectus requirements of applicable securities laws.

Securities legislation in certain provinces or territories of Canada may provide a purchaser with remedies for rescission or damages if this prospectus supplement and the accompanying prospectus (including any amendment hereto or thereto) contains a misrepresentation, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser’s province or territory. The purchaser should refer to any applicable provisions of the securities legislation of the purchaser’s province or territory for particulars of these rights or consult with a legal advisor.

Pursuant to section 3A.3 (or, in the case of securities issued or guaranteed by the government of a non-Canadian jurisdiction, section 3A.4) of National Instrument 33-105 Underwriting Conflicts (“NI 33-105”), the underwriter is not required to comply with the disclosure requirements of NI 33-105 regarding underwriter conflicts of interest in connection with this offering.

Taiwan

The common shares have not been and will not be registered with the Financial Supervisory Commission of Taiwan, the Republic of China (“Taiwan”), pursuant to relevant securities laws and regulations and may not be offered or sold in Taiwan through a public offering or in any manner which would constitute an offer within the meaning of the Securities and Exchange Act of Taiwan or would otherwise require registration with or the approval of the Financial Supervisory Commission of Taiwan. No person or entity in Taiwan has been authorized to offer, sell, give advice regarding or otherwise intermediate the offering or sale of the common shares in Taiwan.

Singapore

Each of the prospectus supplement and the accompanying prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, the prospectus supplement and the accompanying prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the common shares may not be circulated or distributed, nor may the common shares be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to any person in Singapore other than: (i) to an institutional investor (as defined in Section 4A of the Securities and Futures Act, Chapter 289 of Singapore, as modified or amended from time to time (the “SFA”)) pursuant to Section 274 of the SFA; (ii) to a relevant person (as defined in Section 275(2) of the SFA pursuant to Section 275(1) of the SFA, or any person pursuant to Section 275(1A) of the SFA, and in accordance with the conditions specified in Section 275 of the SFA and (where applicable) Regulation 3 of the Securities and Futures (Classes of Investors) Regulations 2018; or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.

Where the common shares are subscribed or purchased under Section 275 of the SFA by a relevant person which is:

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securities or securities-based derivatives contracts (each term as defined in Section 2(1) of the SFA) of that corporation or the beneficiaries’ rights and interest (howsoever described) in that trust shall not be transferred within six months after that corporation or that trust has acquired the common shares pursuant to an offer made under Section 275 of the SFA except:

Section 309B Notification – In connection with Section 309B of the SFA and the Securities and Futures (Capital Markets Products) Regulations 2018 of Singapore (the “CMP Regulations 2018”), we have determined the classification of the common shares as prescribed capital markets products (as defined in the CMP Regulations 2018) and Excluded Investment Products (as defined in MAS Notice SFA 04-N12: Notice on the Sale of Investment Products and MAS Notice FAA-N16: Notice on Recommendations on Investment Products).

LEGAL MATTERS

The validity of the common shares offered hereby and certain other related legal matters will be passed upon for Con Edison by Deneen Donnley, Esq., Senior Vice President and General Counsel of Con Edison, and by Shearman & Sterling LLP, New York, New York. Certain legal matters in connection with the common shares will be passed upon for the underwriter by Hunton Andrews Kurth LLP, New York, New York. Hunton Andrews Kurth LLP has from time to time performed and may perform legal services for affiliates of Con Edison.

EXPERTS

The financial statements and management’s assessment of the effectiveness of internal control over financial reporting (which is included in the Report of Management on Internal Control over Financial Reporting) incorporated in this prospectus supplement by reference to the Annual Report on Form 10-K for the year ended December 31, 2020 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

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PROSPECTUS

Consolidated Edison, Inc.

Debt Securities

Common Shares ($.10 par value)

We may offer and sell from time to time our unsecured debt securities (“Debt Securities”) and common shares ($.10 par value) (“Common Shares”). Our Common Shares are listed on the New York Stock Exchange under the symbol “ED”.

We will establish the specific price and terms of the Debt Securities and the Common Shares we will offer (collectively, the “Securities”) and how they will be offered at the time we offer them, and we will describe them in one or more supplements to this prospectus. This prospectus may not be used to offer and sell our Securities unless accompanied by a prospectus supplement. You should read this prospectus and the related prospectus supplement before you invest in the Securities.

Investing in the Securities involves risks. See “Risk Factors” on page 2 of this prospectus.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

We may sell the Securities on a continuous or delayed basis directly, through agents, dealers or underwriters as designated from time to time, or through a combination of these methods. We reserve the sole right to accept, and together with any agents, dealers and underwriters, reserve the right to reject, in whole or in part, any proposed purchase of Securities. If any agents, dealers or underwriters are involved in the sale of any Securities, the applicable prospectus supplement will set forth any applicable commissions or discounts. Our net proceeds from the sale of Securities also will be set forth in the applicable prospectus supplement.

The date of this prospectus is August 2, 2018.

IN THIS PROSPECTUS, THE “COMPANY,” “CON EDISON,” “WE,” “US” AND “OUR” REFER TO CONSOLIDATED EDISON, INC.

TABLE OF CONTENTS

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RISK FACTORS

Our businesses are influenced by many factors that are difficult to predict, that are often beyond our control and that involve uncertainties that may materially affect our actual operating results, cash flows and financial condition. These risk factors include those described in the documents that are incorporated by reference in this prospectus (see “Incorporation by Reference,” below), and could include additional uncertainties not presently known to us or that we currently do not consider to be material. Before making an investment decision, you should carefully consider these risks as well as any other information we include or incorporate by reference in this prospectus or include in any applicable prospectus supplement.

ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement for the Securities that we have filed with the Securities and Exchange Commission (the “Commission”) using a “shelf” registration process. We may use this prospectus to offer and sell from time to time any of the Securities in one or more offerings. This prospectus provides you with a general description of the Securities. Each time we offer Securities, we will file with the Commission a supplement to this prospectus that will describe the specific terms of that offering. The specific terms of the offered Securities may vary from the general terms of the Securities described in this prospectus, and accordingly the description of the Securities contained in this prospectus is subject to, and qualified by reference to, the specific terms of the offered Securities contained in the applicable prospectus supplement. The prospectus supplement may also add, update or change the information contained in this prospectus, including information about us. If there is any inconsistency between this prospectus and the applicable prospectus supplement, you should rely on the information in the prospectus supplement. Before you invest, you should carefully read this prospectus, the applicable prospectus supplement and the information contained in the documents we refer to in this prospectus under “Where You Can Find More Information.”

This prospectus and any accompanying prospectus supplement contain and incorporate by reference information that you should consider when making your investment decision. We have not authorized anyone else to provide you with any additional or different information. If anyone provides you with such additional, different or inconsistent information, you should not rely on it. We are not making an offer to sell securities in any jurisdiction where the offer or sale is not permitted. You should assume that information appearing in this prospectus, any prospectus supplement and the documents incorporated by reference therein and in any related written communication that we provide or authorize is accurate only as of the respective dates of such documents. Our business, financial condition, results of operations and prospects may have changed since such dates.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the Commission and these filings are publicly available through the Commission’s website (http://www.sec.gov). You may read and copy materials that we have filed with the Commission at its public reference room located at 100 F Street, N.E., Washington, D.C. 20549. You may obtain information on the operation of the public reference room by calling the Commission at 1-800-SEC-0330.

This prospectus, which includes information incorporated by reference (see “Incorporation by Reference,” below), is part of a registration statement on Form S-3 we have filed with the Commission relating to the Securities. As permitted by the Commission’s rules, this prospectus does not contain all of the information included in the registration statement and the accompanying exhibits and schedules we file with the Commission. You should read the registration statement and the exhibits and schedules for more information about us and the Securities.

The registration statement, exhibits and schedules are also available at the Commission’s public reference room or through its Internet website.

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You may obtain a free copy of our filings with the Commission by writing or telephoning us at our principal executive offices: Corporate Secretary, Consolidated Edison, Inc., 4 Irving Place, New York, New York 10003 (Telephone No.: 212-460-3192). The filings are also available through the “For Investors” section of our website: www.conedison.com. The information on our website is not incorporated into this prospectus by reference, and you should not consider it a part of this prospectus.

INCORPORATION BY REFERENCE

The Commission allows us to “incorporate by reference” into this prospectus information we file with them. This means that we can disclose important information to you by referring you to documents that we have previously filed with the Commission or documents that we will file with the Commission in the future. The information we incorporate by reference is considered to be an important part of this prospectus. Information that we file later with the Commission that is incorporated by reference into this prospectus will automatically update and supercede this information.

We are incorporating by reference into this prospectus the following Con Edison documents that we have filed with the Commission:

We are also incorporating by reference into this prospectus any additional documents that we subsequently file with the Commission under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (other than those “furnished” pursuant to Item 2.02 or Item 7.01 in any Current Report on Form 8-K or other information deemed to have been “furnished” rather than filed in accordance with the Commission’s rules) prior to the termination of the offering of the Securities covered by the applicable prospectus supplement.

Any statement contained in a document incorporated or deemed to be incorporated by reference into this prospectus will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus or any accompanying prospectus supplement or any other subsequently filed document that is deemed to be incorporated by reference into this prospectus modifies or supersedes the statement. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this prospectus.

CON EDISON

Con Edison is a holding company that operates only through its subsidiaries. We were incorporated in New York State in 1997.

Our principal business operations are those of Consolidated Edison Company of New York, Inc., Orange and Rockland Utilities, Inc., Con Edison Clean Energy Businesses, Inc. and Con Edison Transmission, Inc.

Consolidated Edison Company of New York, Inc. provides electric service in all of New York City (except a part of Queens) and most of Westchester County, an approximate 660 square mile service area with a population of more than nine million. Consolidated Edison Company of New York, Inc. also provides gas service in Manhattan, the Bronx, parts of Queens and most of Westchester County, and steam service in parts of Manhattan.

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Orange & Rockland Utilities, Inc., along with its regulated utility subsidiary, delivers electricity and natural gas to customers primarily located in southeastern New York State and northern New Jersey.

Con Edison Clean Energy Businesses, Inc., through its subsidiaries, develops, owns and operates renewable and energy infrastructure projects and provides energy-related products and services to wholesale and retail customers.

Con Edison Transmission, Inc., through its subsidiaries, invests in electric and gas transmission projects.

Con Edison is a holding company that operates only through its subsidiaries and has no material assets other than its interests in its subsidiaries. Our ability to pay interest on the Debt Securities and dividends on the Common Shares is dependent on our receipt of dividends from these subsidiaries or proceeds from the sale by us of additional securities or assets. Our utility companies are subject to certain restrictions on the dividends that they may pay to us, as discussed in the notes to our consolidated financial statements in our most recent Annual Report on Form 10-K.

USE OF PROCEEDS

Unless we inform you otherwise in a supplement to this prospectus, we anticipate using the net proceeds received by us from the sale of the Securities for general corporate purposes, including, among others, investment by us in our subsidiaries, repayment of our short-term debt and repurchase, retirement or refinancing of our other debt securities. We may temporarily invest net proceeds prior to their use.

RATIO OF EARNINGS TO FIXED CHARGES

Our ratio of earnings to fixed charges for each of the five most recently completed fiscal years and for the most recent year-to-date quarter-end period are included in the management’s discussion and analysis of financial condition and results of operations section of our Annual Report on Form 10-K and Quarterly Reports on Form 10-Q which are incorporated by reference in this prospectus.

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DESCRIPTION OF DEBT SECURITIES

The Debt Securities are expected to be issued under an indenture, dated as of April 1, 2002, between Con Edison and The Bank of New York Mellon (formerly known as The Bank of New York (successor as trustee to JPMorgan Chase Bank, N.A. (formerly known as JPMorgan Chase Bank))), as Trustee (“Trustee”), as amended and supplemented by a First Supplemental Indenture, dated as of August 1, 2009 (such Indenture, as amended and supplemented, is herein referred to as the “Indenture”), copies of which are included as exhibits to the registration statement of which this prospectus is a part.

The Debt Securities to be issued under the Indenture will be unsecured general obligations of Con Edison ranking equally and ratably in right of payment with the other unsecured debt securities of Con Edison issued under the Indenture that are not subordinated obligations of Con Edison (“Subordinated Securities”); provided, however, that if so provided in the prospectus supplement relating to a series of Debt Securities, the Debt Securities will be Subordinated Securities.

There is no requirement that future issues of Debt Securities of Con Edison be issued under the Indenture, and Con Edison will be free to employ other indentures or documentation, containing provisions different from those included in the Indenture or applicable to one or more issues of Debt Securities, in connection with future issues of such other Debt Securities. Any such other indenture or documentation would be described in a prospectus supplement or in a revision to this prospectus.

The Indenture does not specifically restrict the ability of Con Edison to engage in transactions which could have the effect of increasing the ratio of debt to equity capitalization of Con Edison or a successor corporation. For example, the Indenture does not limit the amount of indebtedness of Con Edison, the payment of dividends by Con Edison or the acquisition by Con Edison of any of the equity securities of Con Edison or Con Edison of New York. The Indenture also permits Con Edison to merge or consolidate or to transfer its assets, subject to certain conditions (see “Consolidation, Merger and Sale” below). Con Edison must obtain approvals from state and/or federal regulatory bodies to merge or consolidate.

The following summary of the Indenture does not purport to be complete and is subject to, and qualified in its entirety by reference to, the Indenture, including the definitions therein of certain terms.

General: The Indenture provides that the Debt Securities offered and other unsecured debt securities of Con Edison issued under the Indenture, without limitation as to aggregate principal amount (collectively the “Indenture Securities”), may be issued in one or more series, in each case as authorized from time to time by Con Edison.

Reference is made to the prospectus supplement relating to the Debt Securities offered for any of the following terms not provided herein:

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The terms of a series of Indenture Securities shall be established by or pursuant to a resolution of Con Edison’s Board of Directors or any duly authorized committee thereof, and set forth in an Officers’ Certificate, or established in a supplemental indenture. The provisions of the Indenture described above permit Con Edison, in addition to issuing Indenture Securities with terms different from those of Indenture Securities previously issued, to “reopen” a previous issue of a series of Indenture Securities and to issue additional Indenture Securities of such series.

The Indenture Securities will be issued only in registered form without coupons and, unless otherwise provided with respect to a series of Indenture Securities, in denominations of $1,000 and integral multiples thereof. (Section 2.02) Indenture Securities of a series may be issued in whole or in part in the form of one or more Global Securities (see “Global Securities”). One or more Global Securities will be issued in a denomination or aggregate denominations equal to the aggregate principal amount of outstanding Indenture Securities of the series to be represented by such Global Security or Global Securities. (Section 2.01) No service charge will be made for any transfer or exchange of Indenture Securities, but Con Edison may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. (Section 2.05)

One or more series of the Indenture Securities may be issued with the same or various maturities at par or at a discount. Debt Securities bearing no interest or interest at a rate which at the time of issuance is below the

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market rate (“Original Issue Discount Securities”) will be sold at a discount (which may be substantial) below their stated principal amount. Federal income tax consequences and other special considerations applicable to any such Original Issue Discount Securities will be described in the prospectus supplement relating thereto.

Subordination: If the prospectus supplement relating to a particular series of Indenture Securities so provides, such securities will be Subordinated Securities and the payment of the principal of, premium, if any, and interest on the Subordinated Securities will be subordinate and junior in right of payment to the prior payment in full of all Senior Indebtedness (defined below) to the extent set forth in the next paragraph. (Section 14.01)

In the event (a) of any distribution of assets of Con Edison in bankruptcy, insolvency, reorganization or receivership proceedings, or upon an assignment for the benefit of creditors, or any other marshalling of assets and liabilities of Con Edison, except for a distribution in connection with a consolidation, merger, sale, transfer or lease permitted under the Indenture (see “Consolidation, Merger and Sale”), or (b) the principal of any Senior Indebtedness shall have been declared due and payable by reason of an event of default with respect thereto and such event of default shall not have been rescinded, then the holders of Subordinated Securities will not be entitled to receive or retain any payment, or distribution of assets of Con Edison, in respect of the principal of, premium, if any, and interest on the Subordinated Securities until the holders of all Senior Indebtedness (or, in the circumstances described in the foregoing clause (b), all Senior Indebtedness due and payable by reason of such an event of default) receive payment of the full amount due in respect of the principal of, premium, if any, and interest on the Senior Indebtedness or provision for such payment on the Senior Indebtedness shall have been made. (Section 14.02)

Subject to the payment in full of all Senior Indebtedness, the holders of the Subordinated Securities shall be subrogated to the rights of the holders of the Senior Indebtedness to receive payments or distributions applicable to the Senior Indebtedness until all amounts owing on the Subordinated Securities shall be paid in full. (Section 14.03)

“Senior Indebtedness” means all indebtedness of Con Edison for the repayment of money borrowed (whether or not represented by bonds, debentures, notes or other securities) other than the indebtedness evidenced by the Subordinated Securities and any indebtedness subordinated to, or subordinated on parity with, the Subordinated Securities. Senior Indebtedness does not include customer deposits or other amounts securing obligations of others to Con Edison. (Section 14.01)

The Indenture does not limit the aggregate amount of Senior Indebtedness that Con Edison may issue. As of June 30, 2018, $17.9 billion of Senior Indebtedness was outstanding, not including as “Senior Indebtedness” $2 billion of guarantees by Con Edison of certain obligations of its subsidiaries.

Redemption: If the prospectus supplement relating to a particular series of Indenture Securities so provides, such securities will be subject to redemption at the option of Con Edison. Notice of any redemption of Indenture Securities shall be given to the registered holders of such securities not less than 30 days nor more than 60 days prior to the date fixed for redemption. If less than all of a series of Indenture Securities are to be redeemed, the Trustee shall select, in such manner as in its sole discretion it shall deem appropriate and fair, the Indenture Securities of such series or portions thereof to be redeemed.

Global Securities: The Indenture Securities of a series may be issued in whole or in part in the form of one or more Global Securities that will be deposited with, or on behalf of, the Depositary identified in the prospectus supplement relating thereto. Unless and until it is exchanged in whole or in part for Indenture Securities in definitive form, a Global Security may not be transferred except as a whole by the Depositary for such Global Security to a nominee of such Depositary or by a nominee of such Depositary to such Depositary or another nominee of such Depositary or by such Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. (Sections 2.01 and 2.05)

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The specific terms of the depositary arrangement with respect to any Indenture Securities of a series will be described in the prospectus supplement relating thereto. Con Edison anticipates that the following provisions will apply to all depositary arrangements.

Upon the issuance of a Global Security, the Depositary for such Global Security will credit, on its book entry registration and transfer system, the respective principal amounts of the Indenture Securities represented by such Global Security to the accounts of institutions that have accounts with such Depositary (“participants”). The accounts to be credited shall be designated by the underwriters through which such Indenture Securities were sold. Ownership of beneficial interests in a Global Security will be limited to participants or persons that may hold interests through participants. Ownership of beneficial interests in such Global Security will be shown on, and the transfer of that ownership will be effected only through, records maintained by the Depositary for such Global Security or by participants or persons that hold through participants. The laws of some states require that certain purchasers of securities take physical delivery of such securities in definitive form. Such limits and such laws may impair the ability to transfer beneficial interests in a Global Security.

So long as the Depositary for a Global Security, or its nominee, is the owner of such Global Security, such Depositary or such nominee, as the case may be, will be considered the sole owner or holder of the Indenture Securities represented by such Global Security for all purposes under the Indenture. Except as set forth below, owners of beneficial interests in a Global Security will not be entitled to have Indenture Securities of the series represented by such Global Security registered in their names, will not receive or be entitled to receive physical delivery of Indenture Securities of such series in definitive form and will not be considered the owners or holders thereof under the Indenture.

Payments of principal of, premium, if any, and interest, if any, on Indenture Securities registered in the name of or held by a Depositary or its nominee will be made to the Depositary or its nominee, as the case may be, as the registered owner of the Global Security representing such Indenture Securities. None of Con Edison, the Trustee or any paying agent for such Indenture Securities will have any responsibility or liability for any aspect of the records relating to, or payments made on account of, beneficial ownership interests in a Global Security for such Indenture Securities or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

Con Edison expects that the Depositary for Indenture Securities of a series, upon receipt of any payment of principal, premium, if any, or interest, if any, in respect of a Global Security will immediately credit participants’ accounts with payments in amounts proportionate to their respective beneficial interests in the principal amount of such Global Security as shown on the records of such Depositary. Con Edison also expects that payments by participants to owners of beneficial interests in such Global Security held through such participants will be governed by standing instructions and customary practices, as is now the case with securities registered in “street name,” and will be the responsibility of such participants.

If a Depositary for Indenture Securities of a series is at any time unwilling or unable to continue as Depositary and a successor depositary is not appointed by Con Edison within 90 days, Con Edison will issue Indenture Securities of such series in definitive form in exchange for the Global Security or Global Securities representing the Indenture Securities of such series. In addition, Con Edison may at any time and in its sole discretion determine not to have any Indenture Securities of a series represented by one or more Global Securities and, in such event, will issue Indenture Securities of such series in definitive form in exchange for the Global Security or Global Securities representing such Indenture Securities. Further, if Con Edison so specifies with respect to the Indenture Securities of a series, each person specified by the Depositary of the Global Security representing Indenture Securities of such series may, on terms acceptable to Con Edison and the Depositary for such Global Security, receive Indenture Securities of the series in definitive form. In any such instance, each person so specified by the Depositary of the Global Security will be entitled to physical delivery in definitive form of Indenture Securities of the series represented by such Global Security equal in principal amount to such person’s beneficial interest in the Global Security.

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Payments and Paying Agents: Unless otherwise indicated in the prospectus supplement, payment of principal of and premium, if any, on Indenture Securities will be made against surrender of such Indenture Securities at The Bank of New York Mellon, Corporate Trust Division, 111 Sanders Creek Parkway, East Syracuse, NY 13057. Unless otherwise indicated in the prospectus supplement, payment of any installment of interest on Indenture Securities will be made to the person in whose name such Indenture Security is registered at the close of business on the record date for such interest. Unless otherwise indicated in the prospectus supplement, payments of such interest will be made at The Bank of New York Mellon, or by a check mailed to each holder of an Indenture Security at such holder’s registered address.

All moneys paid by Con Edison to a paying agent for the payment of principal of, premium, if any, or interest, if any, on any Indenture Security that remain unclaimed at the end of two years after such principal, premium or interest shall have become due and payable will be repaid to Con Edison and the holder of such Indenture Security entitled to receive such payment will thereafter look only to Con Edison for payment thereof. (Section 12.05) However, any such payment shall be subject to escheat pursuant to state abandoned property laws.

Consolidation, Merger and Sale: The Indenture permits Con Edison, without the consent of the holders of any of the Indenture Securities, to consolidate with or merge into any other corporation or sell, transfer or lease its properties as an entirety or substantially as an entirety to any person, provided that: (i) the successor is a corporation organized under the laws of the United States of America or any state thereof; (ii) the successor assumes Con Edison’s obligations under the Indenture and the Indenture Securities; (iii) immediately after giving effect to the transaction, no Event of Default (see “Default and Certain Rights on Default”) and no event that, after notice or lapse of time, or both, would become an Event of Default, shall have occurred and be continuing; and (iv) certain other conditions are met. (Section 11.02) The Indenture does not restrict the merger of another corporation into Con Edison.

Modification of the Indenture: The Indenture contains provisions permitting Con Edison and the Trustee, without the consent of the holders of the Indenture Securities, to execute supplemental indentures to, among other things, establish the form and terms of any series of Indenture Securities issuable thereunder by one or more supplemental indentures and to add to the conditions, limitations or restrictions to be observed by Con Edison and to cure any ambiguity or to correct or supplement any provision contained in the Indenture which may be defective or inconsistent with any other provision contained therein or to make such other provisions in regard to matters or questions arising under the Indenture as shall not be inconsistent with the provisions of the Indenture and shall not adversely affect the interests of the holders of the Indenture Securities. The Indenture also contains provisions permitting Con Edison and the Trustee, with the consent of the holders of a majority in aggregate principal amount of the Indenture Securities of any series at the time outstanding, evidenced as in the Indenture provided, to execute supplemental indentures adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture or of any supplemental indenture with respect to Indenture Securities of such series, or modifying in any manner the rights of the holders of the Indenture Securities of such series; provided, however, that no such supplemental indenture shall (i) extend the fixed maturity, or the earlier optional date of maturity, if any, of any Indenture Security of a particular series or reduce the principal amount thereof or the premium thereon, if any, or reduce the rate or extend the time of payment of interest thereon, or make the principal thereof or premium, if any, or interest thereon payable in any coin or currency other than that provided in the Indenture Security, without the consent of the holder of each Indenture Security so affected, or (ii) reduce the principal amount of Indenture Securities of any series, the holders of which are required to consent to any such supplemental indenture, without the consent of the holders of all Indenture Securities of such series outstanding thereunder. (Sections 10.01 and 10.02)

Default and Certain Rights on Default: The Indenture provides that the Trustee or the holders of 25% or more in aggregate principal amount of Indenture Securities of a series outstanding thereunder may declare the principal of all Indenture Securities of such series to be due and payable immediately, if any Event of Default

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with respect to such series of Indenture Securities shall occur and be continuing. However, if all defaults with respect to Indenture Securities of such series (other than non-payment of accelerated principal) are cured, the holders of a majority in aggregate principal amount of the Indenture Securities of such series outstanding thereunder may waive the default and rescind the declaration and its consequences. Events of Default with respect to a series of Indenture Securities include (unless specifically deleted in the supplemental indenture or Board Resolution under which such series of Indenture Securities is issued, or modified in any such supplemental indenture):

The Indenture provides that the holders of a majority in aggregate principal amount of the Indenture Securities of any series outstanding thereunder may, subject to certain exceptions, direct the time, method and place of conducting any proceeding for any remedy available to, or exercising any power or trust conferred upon, the Trustee with respect to Indenture Securities of such series and may on behalf of all holders of Indenture Securities of such series waive any past default and its consequences with respect to Indenture Securities of such series, except a default in the payment of the principal of or premium, if any, or interest on any of the Indenture Securities of such series. (Section 6.06)

Holders of Indenture Securities of any series may not institute any proceeding to enforce the Indenture unless the Trustee thereunder shall have refused or neglected to act for 60 days after a request and offer of satisfactory indemnity by the holders of 25% or more in aggregate principal amount of the Indenture Securities of such series outstanding thereunder. Notwithstanding any other provision of the Indenture, however, the right of any holder of Indenture Securities of any series to enforce payment of principal of or premium, if any, or interest on the holder’s Indenture Securities when due shall not be impaired. (Section 6.04)

The Trustee is required to give the holders of Indenture Securities of any series notice of defaults with respect to such series (Events of Default summarized above, exclusive of any grace period and irrespective of any requirement that notice of default be given) as to which it has received written notice within 90 days after the occurrence thereof, unless cured before the giving of such notice, but, except for defaults in payments of principal of, premium, if any, or interest on the Indenture Securities of such series, the Trustee may withhold notice if and so long as it determines in good faith that the withholding of such notice is in the interests of such holders. (Section 6.07)

Con Edison is required to deliver to the Trustee each year an Officers’ Certificate stating whether such officers have obtained knowledge of any default by Con Edison in the performance of certain covenants and, if so, specifying the nature thereof. (Section 4.06)

Concerning the Trustee: The Indenture provides that the Trustee shall, prior to the occurrence of any Event of Default with respect to the Indenture Securities of any series and after the curing or waiving of all Events of Default with respect to such series which have occurred, perform only such duties as are specifically set forth in the Indenture and no implied covenants or obligations shall be read into the Indenture against the Trustee. During the existence of any Event of Default with respect to the Indenture Securities of any series, the

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Trustee shall exercise such of the rights and powers vested in it under the Indenture with respect to such series and use the same degree of care and skill in their exercise as a prudent man would exercise or use under the circumstances in the conduct of his own affairs. (Section 7.01)

The Trustee may acquire and hold Indenture Securities and, subject to certain conditions, otherwise deal with Con Edison as if it were not Trustee under the Indenture. (Section 7.04)

The Bank of New York Mellon, which is the Trustee under the Indenture, is a participating bank under Con Edison’s revolving credit agreement and is a depository for funds and performs other services for, and transacts other banking business with, Con Edison in the normal course of business.

Satisfaction and Discharge of Indenture; Defeasance: The Indenture may be satisfied and discharged upon delivery of all outstanding Indenture Securities for cancellation or if all other Indenture Securities are to be paid within one year, at maturity or upon redemption, upon deposit with the Trustee of amounts sufficient for such payment and all other sums due under the Indenture. (Section 12.01) In addition, the Indenture provides that if, at any time after the date of the Indenture, Con Edison, if so permitted with respect to Indenture Securities of a particular series, shall deposit with the Trustee, in trust for the benefit of the holders thereof, (i) funds sufficient to pay, or (ii) such amount of obligations issued or guaranteed by the United States of America as will, or will together with the income thereon without consideration of any reinvestment thereof, be sufficient to pay all sums due for principal of, premium, if any, and interest on the Indenture Securities of such series, as they shall become due from time to time, and certain other conditions are met, the Trustee shall cancel and satisfy the Indenture with respect to such series to the extent provided therein. (Section 12.02) The prospectus supplement describing the Indenture Securities of such series will more fully describe the provisions, if any, relating to such defeasance of the Indenture with respect to such series.

Reports Furnished Securityholders: Con Edison will furnish the holders of Indenture Securities copies of all annual financial reports distributed to its stockholders generally as soon as practicable after the mailing of such material to the stockholders. (Section 4.07)

DESCRIPTION OF COMMON SHARES

Con Edison’s authorized capital stock consists of 500,000,000 Common Shares ($0.10 par value per share), of which 311,102,989 shares were issued and outstanding as of July 31, 2018, and 6,000,000 preferred shares ($1.00 par value per share) (“Preferred Shares”), of which no shares have been issued. Con Edison’s Board of Directors is authorized from time to time to issue the Preferred Shares as Preferred Shares of any series and, in connection with the creation of each such series, to fix by the resolution or resolutions providing for the issuance thereof the number of shares of such series and the designations, relative rights, preferences and limitations (including dividend, liquidation and voting rights, preferences and limitations) of such series to the full extent permitted by the law of the State of New York, except that holders of the Preferred Shares shall not be entitled to more than one vote for each Preferred Share held. The Preferred Shares will have no voting rights, except as so fixed or as required by applicable law.

The following description of the Common Shares does not purport to be complete and is subject to, and qualified in its entirety by reference to Con Edison’s Restated Certificate of Incorporation.

Dividends. Subject to any prior rights of Preferred Shares (if any should become outstanding), Common Shares are entitled to dividends when, as and if declared by Con Edison’s Board of Directors, and Con Edison may purchase or otherwise acquire outstanding Common Shares out of funds legally available therefor.

Liquidation Rights. Subject to any prior rights of Preferred Shares (if any should become outstanding), upon liquidation of Con Edison, any remaining net assets of Con Edison are distributable pro rata to the holders of Common Shares.

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Voting Rights. Holders of Common Shares are entitled to one vote for each share. There are no cumulative voting rights. Holders of Preferred Shares shall have no voting rights unless, in connection with the issuance of Preferred Shares, Con Edison’s Board of Directors provides voting rights (in which event the voting rights shall not be more than one vote for each Preferred Share held) or unless otherwise required by law.

No Preemptive Rights. Holders of the Common Shares are not entitled to preemptive rights.

Transfer Agent and Registrar. The transfer agent and registrar for the Common Shares is Computershare, P.O. Box 30170, College Station, TX 77842-3170.

Certain provisions of Con Edison’s Restated Certificate of Incorporation and by-laws and New York law may have the effect of encouraging persons considering unsolicited tender offers or unilateral takeover proposals for Con Edison to negotiate with the Board of Directors and could thereby have an effect of delaying, deferring or preventing a change in control of Con Edison. These provisions include:

Authorized But Unissued Shares. As of July 31, 2018, 165,686,311 Common Shares and 6,000,000 Preferred Shares were authorized but unissued and 23,210,700 Common Shares were held by Con Edison or Consolidated Edison Company of New York, Inc. as treasury shares. Such shares could be issued without stockholder approval in transactions that might prevent or render more difficult or costly the completion of a takeover transaction. In this regard, Con Edison’s Restated Certificate of Incorporation grants the Board of Directors broad corporate power to establish the rights and preferences of preferred stock, one or more classes or series of which could be issued which would entitle holders to exercise rights which could have the effect of impeding a takeover, including rights to convert or exchange the stock into Common Shares or other securities or to demand redemption of the stock at a specified price under prescribed circumstances related to a change of control.

Advance Notice By-law. Under Con Edison’s by-laws, written notice of any proposal to be presented by any shareholder or any person to be nominated by any shareholder for election as a director must be received by Con Edison’s Secretary at Con Edison’s principal executive offices not less than 90 nor more than 120 days prior to the anniversary date of the previous year’s annual meeting; provided, however, that if no annual meeting was held in the previous year, or if the date of the applicable annual meeting has been changed by more than 30 days from the anniversary date of the prior year’s annual meeting, such notice shall be received by the Secretary no more than ten days following the date Con Edison publicly announces the date of the applicable annual meeting.

Section 912. Con Edison is subject to Section 912 of the New York Business Corporation Law. Accordingly, Con Edison may not engage in a business combination, such as a merger, consolidation, recapitalization, asset sale or disposition of stock, with any “interested shareholder” for a period of five years from the date that the interested shareholder first became an interested shareholder unless:

An “interested shareholder” is any person that is the beneficial owner of 20% or more of the outstanding voting stock of Con Edison or is an affiliate or associate of Con Edison that at any time during the prior five years was the beneficial owner, directly or indirectly, of 20% or more of the then outstanding voting stock of Con Edison.

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PLAN OF DISTRIBUTION

We may offer the Securities (a) through agents; (b) through underwriters or dealers; (c) directly to one or more purchasers; or (d) through a combination of any of these or other methods of sale. Our Securities may also be offered in connection with forward sale agreements. We will identify the specific plan of distribution in a prospectus supplement, including: (1) the identity of any underwriters, dealers, agents or direct purchasers and the amount of the Securities underwritten or purchased by them and their compensation; (2) the initial offering price of the Securities and the proceeds that we will receive from the sale of the Securities; and (3) any securities exchange on which the Securities will be listed.

It is anticipated that any underwriting agreement pertaining to any Securities will (1) entitle the underwriters to indemnification by Con Edison against certain civil liabilities under the Securities Act of 1933, as amended, or to contribution for payments the underwriters may be required to make in respect thereof, (2) provide that the obligations of the underwriters will be subject to certain conditions precedent, and (3) provide that the underwriters generally will be obligated to purchase all such Securities if any are purchased. The underwriters or affiliated companies may engage in transactions with, or perform services for, Con Edison and its affiliates in the ordinary course of business.

In connection with an offering made hereby, any underwriter may purchase and sell the Securities in the open market. These transactions may include over-allotment and stabilizing transactions and purchases to cover short positions created by the underwriters in connection with an offering. Stabilizing transactions consist of certain bids or purchases for the purpose of preventing or delaying a decline in the market price of the Securities, and short positions created by the underwriters involve the sale by the underwriters of more Securities than they are required to purchase from Con Edison. The underwriters also may impose a penalty bid, whereby selling concessions allowed to broker-dealers in respect of the Securities sold in the offering may be reclaimed by the underwriters if such Securities are repurchased by the underwriters in stabilizing or covering transactions. These activities may stabilize, maintain or otherwise affect the market price of the Securities, which may be higher than the price that might otherwise prevail in the open market; and these activities, if commenced, may be discontinued at any time. These transactions may be effected in the over-the-counter market or otherwise.

The anticipated date of delivery of the Securities will be as set forth in the prospectus supplement relating to the offering of the Securities.

LEGAL MATTERS

Unless otherwise set forth in a prospectus supplement, the validity of the Securities and certain other related legal matters will be passed upon for Con Edison by Elizabeth D. Moore, Esq., Senior Vice President and General Counsel of Con Edison, and by Shearman & Sterling LLP, New York, New York. Certain legal matters in connection with the Securities will be passed upon for any underwriters by Hunton Andrews Kurth LLP, 200 Park Avenue, New York, New York 10166. Hunton Andrews Kurth LLP from time to time has performed and may perform legal services for affiliates of Con Edison.

EXPERTS

The financial statements and management’s assessment of the effectiveness of internal control over financial reporting (which is included in the Report of Management on Internal Control over Financial Reporting) incorporated in this prospectus by reference to the Annual Report on Form 10-K for the year ended December 31, 2017 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

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