D Dominion Energy Inc

Exhibit 1.1

DOMINION ENERGY, INC.

$1,250,000,000 2024 Series C Enhanced Junior Subordinated Notes due 2055

UNDERWRITING AGREEMENT

November 14, 2024

BofA Securities, Inc.

Goldman Sachs & Co. LLC

Wells Fargo Securities, LLC

as Representatives for the Underwriters

listed in Schedule I hereto

One Bryant Park

New York, New York 10036

Goldman Sachs & Co. LLC

200 West Street

New York, New York 10282

Wells Fargo Securities, LLC

550 South Tryon Street

Charlotte, North Carolina 28202

Ladies and Gentlemen:

The undersigned, Dominion Energy, Inc. (the Company), hereby confirms its agreement with the several Underwriters named in Schedule I hereto (the Agreement) with respect to the issuance and sale to the several Underwriters named in Schedule I of certain of the Company’s 2024 Series C Enhanced Junior Subordinated Notes due 2055 (Junior Subordinated Notes) specified in Schedule II hereto, and the public offering thereof by the several Underwriters, upon the terms specified in Schedule II. Capitalized terms used herein without definition shall be used as defined in the Prospectus (as hereinafter defined).

1. Underwriters and Representatives. The term “Underwriters” as used herein shall be deemed to mean the several persons, firms or corporations (including the Representatives hereinafter mentioned) named in Schedule I hereto, and the term “Representatives” as used herein shall be deemed to mean the Representatives to whom this Agreement is addressed, who by signing this Agreement represent that they have been authorized by the other Underwriters to execute this Agreement on their behalf and to act for them in the manner herein provided. If there shall be only one person, firm or corporation named as an addressee above, the term “Representatives” as used herein shall mean that person, firm or corporation. If there shall be only one person, firm or

corporation named in Schedule I hereto, the term “Underwriters” as used herein shall mean that person, firm or corporation. All obligations of the Underwriters hereunder are several and not joint. Unless otherwise stated, any action under or in respect of this Agreement taken by the Representatives will be binding upon all the Underwriters.

2. Description of the Junior Subordinated Notes. Schedule II specifies the aggregate principal amount of the Junior Subordinated Notes, the initial public offering price of the Junior Subordinated Notes, and the purchase price to be paid by the Underwriters and sets forth the date, time and manner of delivery of the Junior Subordinated Notes and payment therefor. Schedule II also specifies (to the extent not set forth in Sections 4 and 5 herein, or in the Registration Statement, Time of Sale Information or Prospectus, each such term as defined below) the terms and provisions for the purchase of such Junior Subordinated Notes. The Junior Subordinated Notes will be issued under the Company’s Junior Subordinated Indenture II dated as of June 1, 2006, between the Company and The Bank of New York Mellon (successor to JPMorgan Chase Bank, N.A.), as Trustee (the Indenture Trustee), as previously supplemented and amended and as further supplemented by an Eighteenth Supplemental Indenture, dated as of November 1, 2024, between the Company and Deutsche Bank Trust Company Americas (the Series Trustee) (collectively, the Indenture).

3A. Representations and Warranties of the Company. The Company represents and warrants to, and agrees with, the Underwriters that:

(a) A registration statement, No. 333-269879 on Form S-3 for the registration of the Junior Subordinated Notes under the Securities Act of 1933, as amended (the Securities Act), heretofore filed with the Securities and Exchange Commission (the Commission) has become effective. Such registration statement (i) is an “automatic shelf registration statement” as defined in Rule 405 under the Securities Act and (ii) became effective not earlier than three years prior to the Closing Date (as defined below), and the Company has not received any notice of objection of the Commission to the use of such registration statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Securities Act. As used herein, “Registration Statement” means, at any given time, such registration statement including the amendments thereto up to such time, the exhibits and any schedules thereto at such time, the Incorporated Documents (as defined below) at such time and documents otherwise deemed to be a part thereof or included therein at such time pursuant to the Rules and Regulations (as defined below) and information that was omitted from the Registration Statement at the time it became effective but that is deemed to be part of and included in the Registration Statement pursuant to Rule 430B under the Securities Act (Rule 430 B Information); “Base Prospectus” means the base prospectus included in the Registration Statement; “Preliminary Prospectus” means the Base Prospectus and any prospectus supplement used in connection with the offering of the Junior Subordinated Notes that omitted the Rule 430B Information and is used prior to the filing of the Prospectus (as defined below); “Prospectus” means the prospectus supplement to the Base Prospectus that is first filed after the execution hereof pursuant to Rule 424(b) under the Securities Act, together with the Base Prospectus, as amended at the time of such filing; and “Prospectus Supplement” means the prospectus supplement to the Base Prospectus included in the Prospectus. As used herein, the terms “Registration Statement,” “Base Prospectus,” “Preliminary

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Prospectus,” “Prospectus” and “Prospectus Supplement” include all documents (including any Current Report on Form 8-K) incorporated therein by reference, whether such incorporated documents are filed before or after the date of such Registration Statement or Prospectus (collectively, the Incorporated Documents). When such Incorporated Documents are filed after the date of the document into which they are incorporated, they shall be deemed included therein from the date of filing of such Incorporated Documents.

At or before 4:15 p.m. on the date hereof (the Time of Sale), the Company had prepared the following information in connection with the offering (collectively, the Time of Sale Information): the Base Prospectus dated February 21, 2023, each Preliminary Prospectus, the Final Term Sheet (as defined in Section 6(a)) and any Issuer Free Writing Prospectus (as defined in Section 3A(c)) listed on Schedule VI hereto. Notwithstanding any provision hereof to the contrary, each document included in the Time of Sale Information shall be deemed to include all documents (including any Current Report on Form 8-K) incorporated therein by reference, whether any such Incorporated Document is filed before or after the document into which it is incorporated, so long as the Incorporated Document is filed before the Time of Sale.

(b) No order suspending the effectiveness of the Registration Statement or otherwise preventing or suspending the use of the Prospectus has been issued by the Commission and is in effect and no proceedings for that purpose or pursuant to Section 8A of the Securities Act against the Company or related to the offering are pending before or, to the knowledge of the Company, threatened by the Commission. The Registration Statement and the Prospectus comply in all material respects with the provisions of the Securities Act, the Securities Exchange Act of 1934, as amended (the Securities Exchange Act), the Trust Indenture Act of 1939, as amended (the Trust Indenture Act), and the rules, regulations and releases of the Commission under the Securities Act, the Securities Exchange Act and the Trust Indenture Act (the Rules and Regulations); the Registration Statement, on its most recent effective date and on the Closing Date, did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; neither the Prospectus as of its date nor the Time of Sale Information at the Time of Sale contained or contains an untrue statement of a material fact or omitted or omits to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; on the Closing Date, none of the Time of Sale Information, the Issuer Free Writing Prospectuses (as supplemented by and taken together with the Time of Sale Information) or the Prospectus will include any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; and, on the Closing Date, the Registration Statement and the Prospectus (including any amendments and supplements thereto) will conform in all material respects to the requirements of the Securities Act, the Securities Exchange Act, the Trust Indenture Act and the Rules and Regulations; provided, that the foregoing representations and warranties in this Section 3A(b) shall not apply to statements in or omissions from the Registration Statement, any Issuer Free Writing Prospectus, the Time of Sale Information or the Prospectus made in reliance upon information furnished herein or in writing to the Company by the Underwriters or on the Underwriters’ behalf

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through the Representatives for use in the Registration Statement, any Issuer Free Writing Prospectus, the Time of Sale Information or the Prospectus or the part of the Registration Statement which constitutes the Indenture Trustee’s Statement of Eligibility under the Trust Indenture Act; and provided further, that, except as otherwise provided in Section 3A(a) with respect to the Time of Sale Information, the foregoing representations and warranties are given on the basis that any statement contained in an Incorporated Document shall be deemed not to be contained in the Registration Statement, the Time of Sale Information or the Prospectus if the statement has been modified or superseded by any statement in a subsequently filed Incorporated Document or in the Registration Statement or the Prospectus or in any amendment or supplement thereto.

(c) Other than the Base Prospectus, any Preliminary Prospectus, the documents listed on Schedule VI, the Prospectus, or any document not constituting a prospectus under Section 2(a)(10)(a) of the Securities Act or Rule 134 under the Securities Act, the Company (including its agents and representatives, other than the Underwriters in their capacity as such) has not made, used, prepared, authorized, approved or referred to and will not prepare, make, use, authorize, approve or refer to, any “written communication” (as defined in Rule 405 under the Securities Act) that constitutes an offer to sell or solicitation of an offer to buy the Junior Subordinated Notes, unless such written communication is approved in writing in advance by the Representatives. To the extent any such written communication constitutes an “issuer free writing prospectus” (as defined in Rule 433 under the Securities Act and referred to herein as an Issuer Free Writing Prospectus), such Issuer Free Writing Prospectus complied or will comply in all material respects with the requirements of Rule 433(c) and, if the filing thereof is required pursuant to Rule 433, such filing has been or will be made in the manner and within the time period required by Rule 433(d). The Company will, pursuant to reasonable procedures developed in good faith, retain copies of each such Issuer Free Writing Prospectus in accordance with Rule 433 under the Securities Act.

(d) If, at any time following issuance of an Issuer Free Writing Prospectus, any event occurred or occurs as a result of which such Issuer Free Writing Prospectus conflicted or conflicts with the information contained in the Registration Statement, the Preliminary Prospectus or the Prospectus, the Company (i) has promptly notified or will promptly notify the Underwriters through the Representatives of such conflict and, (ii) at its expense, has promptly amended or supplemented or will promptly amend or supplement such Issuer Free Writing Prospectus to eliminate or correct such conflict; provided, that the foregoing representations and warranties in this Section 3A(d) shall not apply to conflicts arising from statements in or omissions from any Issuer Free Writing Prospectus made in reliance upon information furnished herein or in writing to the Company by the Underwriters or on the Underwriters’ behalf through the Representatives for use in such Issuer Free Writing Prospectus.

(e) Except as reflected in, or contemplated by, the Registration Statement, the Time of Sale Information and the Prospectus (exclusive of any amendments or supplements after the date hereof), since the respective most recent dates as of which information is given in the Registration Statement, the Time of Sale Information and the Prospectus (exclusive of any amendments or supplements after the date hereof), there has not been any

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material adverse change or event which would result in a material adverse effect on the condition of the Company and its subsidiaries taken as a whole, financial or otherwise (a Material Adverse Effect). The Company and its subsidiaries taken as a whole have no material contingent financial obligation which is not disclosed in the Registration Statement, the Time of Sale Information or the Prospectus.

(f) Deloitte & Touche LLP, who has audited certain of the Company’s financial statements filed with the Commission and incorporated by reference in the Registration Statement, is an independent registered public accounting firm as required by the Securities Act and the Rules and Regulations.

(g) Virginia Electric and Power Company and Dominion Energy South Carolina, Inc. are the Company’s only Significant Subsidiaries as such term is defined in Rule 1-02 of Regulation S-X, substituting in such definition “September 30, 2024” and “the 12 month period ended September 30, 2024” for the end of the most recently completed fiscal year and for the most recently completed fiscal year, respectively (each of the foregoing entities, a Significant Subsidiary and, collectively, the Significant Subsidiaries). All of the issued and outstanding capital stock of each such Significant Subsidiary that is a corporation has been duly authorized and validly issued, is fully paid and nonassessable, and the capital stock of each such Significant Subsidiary that is a corporation is owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, claim, encumbrance or equitable right. With respect to any such Significant Subsidiary that is a limited liability company, the membership interests of such Significant Subsidiary are owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, claim, encumbrance or equitable right. With respect to any such Significant Subsidiary that is a limited partnership, the general partnership interests of such Significant Subsidiary are owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, claim, encumbrance or equitable right.

(h) The execution, delivery and performance of this Agreement, the Indenture, and the Junior Subordinated Notes, the consummation of the transactions contemplated in this Agreement and in the Registration Statement (including the issuance and sale of the Junior Subordinated Notes and the use of the proceeds from the sale of the Junior Subordinated Notes as described in the Prospectus under the caption “Use of Proceeds”) and compliance by the Company with its obligations under this Agreement, the Indenture and the Junior Subordinated Notes do not and will not, whether with or without the giving of notice or lapse of time or both, conflict with or constitute a breach of or default under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any subsidiary pursuant to any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or any other agreement or instrument, to which the Company or any subsidiary is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any subsidiary is subject (except for such conflicts, breaches or defaults or liens, charges or encumbrances that would not have a Material Adverse Effect), nor will such action result in any violation of the provisions of the charter or bylaws of the Company or any subsidiary, or any applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any subsidiary or any of their respective properties, assets or operations, and the Company has full power and authority to authorize, issue and sell the Junior Subordinated Notes as contemplated by this Agreement.

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(i) The Company is not, and, after giving effect to the offering and sale of the Junior Subordinated Notes and the application of the proceeds thereof as described in the Time of Sale Information or the Prospectus, will not be, an “investment company” or a company “controlled” by an “investment company” which is required to be registered under the Investment Company Act of 1940, as amended.

(j) The Company is a “well-known seasoned issuer,” and is not, and has not been since the filing of the Registration Statement, an “ineligible issuer,” both terms as defined in Rule 405 under the Securities Act. The Company has paid the registration fee for this offering of Junior Subordinated Notes pursuant to Rule 456(b)(1) under the Securities Act or will pay such fees within the time period required by such rule (without giving effect to the proviso therein) and in any event prior to the Closing Date.

(k) Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer or employee of the Company or any of its subsidiaries is currently subject to any U.S. sanctions administered by the U.S. government, including those administered by the Office of Foreign Assets Control of the U.S. Treasury Department (OFAC) or the U.S. Department of State; and the Company will not directly or, to the knowledge of the Company, indirectly use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any U.S. sanctions administered by OFAC.

3B. Representations and Warranties of the Underwriters. Each of the Underwriters represents and warrants to, and agrees with, the Company that:

(a) It has not solicited offers for, or offered or sold, and will not solicit offers for, or offer or sell, the Junior Subordinated Notes as part of its initial offering outside the United States except in or from those jurisdictions set forth on Schedule VII hereto, in accordance with the restrictions and the applicable securities laws and regulations thereunder as set forth in the Underwriting section of the Prospectus Supplement under the caption “Selling Restrictions.”

(b) It has not made and will not make, unless approved in writing in advance by the Company and the Representatives, any offer relating to the Junior Subordinated Notes that would constitute a “free writing prospectus” (as defined in Rule 405 under the Securities Act and referred to herein as a Free Writing Prospectus) that would be required to be filed with the Commission under Rule 433 under the Securities Act. Notwithstanding the foregoing, it may use a free writing prospectus that is (i) the Final Term Sheet; (ii) an Issuer Free Writing Prospectus listed on Schedule VI or otherwise approved in writing in advance by the Representatives pursuant to Section 3A(c) above or (iii) one or more term sheets relating to the Junior Subordinated Notes that do not contain substantive changes from or additions to the Final Term Sheet. The Representatives and the Company agree that any such term sheets described in clause (iii) above will not constitute Issuer Free Writing Prospectuses for purposes of this Agreement.

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(c) It will, pursuant to reasonable procedures developed in good faith, retain copies of each Free Writing Prospectus used or referred to by it, in accordance with Rule 433 under the Securities Act.

(d) It is not subject to any pending proceeding under Section 8A of the Securities Act with respect to the offering (and will promptly notify the Company if any such proceeding is initiated against it during the period of time after the first date of the public offering of the Junior Subordinated Notes that a prospectus relating to the Junior Subordinated Notes is required by law to be delivered (or required to be delivered but for Rule 172 under the Securities Act) in connection with sales of the Junior Subordinated Notes by an Underwriter or dealer (the Prospectus Delivery Period)). Whether the Prospectus Delivery Period is ongoing for purposes of this Section 3B(d) shall be determined by the opinion of Troutman Pepper Hamilton Sanders LLP.

4. Purchase and Public Offering. On the basis of the representations and warranties herein contained, but subject to the terms and conditions in this Agreement set forth, the Company agrees to sell to each of the Underwriters, and each Underwriter agrees, severally and not jointly, to purchase from the Company, at the price, place and time hereinafter specified, the principal amount of Junior Subordinated Notes set forth opposite the name of such Underwriter in Schedule I hereto. The Underwriters agree to make a public offering of their respective Junior Subordinated Notes specified in Schedule I hereto at the initial public offering price specified in Schedule II hereto. It is understood that after such initial offering the several Underwriters reserve the right to vary the offering price and further reserve the right to withdraw, cancel or modify any subsequent offering without notice.

The Company shall not be obligated to deliver any of the Junior Subordinated Notes, except upon payment for all of the Junior Subordinated Notes to be purchased on the Closing Date.

5. Time and Place of Closing. Delivery of the certificate(s) for the Junior Subordinated Notes and payment therefor by the Representatives for the accounts of the several Underwriters shall be made at the time, place and date specified in Schedule II or such other time, place and date as the Representatives and the Company may agree upon in writing, and subject to the provisions of Section 10 hereof. The hour and date of such delivery and payment are herein called the “Closing Date.” On the Closing Date, the Company, through the facilities of The Depository Trust Company (DTC), shall deliver or cause to be delivered a securities entitlement with respect to the Junior Subordinated Notes to the Representatives for the accounts of each Underwriter against payment of the purchase price by wire transfer of same day funds to a bank account designated by the Company. Time shall be of the essence, and delivery at the time and place specified pursuant to this Agreement is a further condition of the obligation of each Underwriter hereunder. Upon delivery, the Junior Subordinated Notes shall be registered in the name of Cede & Co., as nominee for DTC.

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6. Covenants of the Company. The Company agrees that:

(a) The Company will file the final Prospectus with the Commission within the time periods specified by Rule 424(b) and Rule 430B under the Securities Act; will prepare a final term sheet, substantially in the form of Schedule VI hereto and file such final term sheet in compliance with Rule 433(d) under the Securities Act (as so filed, the Final Term Sheet); will file any Issuer Free Writing Prospectus to the extent required by Rule 433 under the Securities Act; and will file promptly all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act after the date of the Prospectus and within the Prospectus Delivery Period. The Company will pay the registration fees for this offering within the time period required by Rule 456(b)(i) under the Securities Act and, in any event, prior to the Closing Date.

(b) If the Representatives so request, the Company, on or prior to the Closing Date, will deliver to the Representatives conformed copies of the Registration Statement as originally filed, including all exhibits, any Preliminary Prospectus, the Final Term Sheet, any Issuer Free Writing Prospectus, the Prospectus and all amendments and supplements to each such document, in each case as soon as available and in such quantities as are reasonably requested by the Representatives. The Representatives will be deemed to have made such a request for copies for each of the several Underwriters and Troutman Pepper Hamilton Sanders LLP, counsel to the Underwriters, with respect to any such documents that are not electronically available through the Commission’s Electronic Data Gathering, Analysis and Retrieval (EDGAR) filing system or any successor thereto.

(c) The Company will pay all expenses in connection with (i) the preparation and filing by it of the Registration Statement, any Preliminary Prospectus, the Final Term Sheet, any Issuer Free Writing Prospectus and the Prospectus, (ii) the preparation, issuance and delivery of the Junior Subordinated Notes, (iii) any fees and expenses of the Indenture Trustee and the Series Trustee and (iv) the printing and delivery (by first class mail) to the Underwriters, in reasonable quantities, of copies of the Registration Statement, any Preliminary Prospectus, the Final Term Sheet, any Issuer Free Writing Prospectus and the Prospectus (each as originally filed and as subsequently amended). In addition, the Company will pay the reasonable out-of-pocket fees and disbursements of Troutman Pepper Hamilton Sanders LLP, counsel to the Underwriters, in connection with the qualification of the Junior Subordinated Notes under state securities or blue sky laws or investment laws (if and to the extent such qualification is required by the Underwriters or the Company).

(d) If, during the time when a prospectus relating to the Junior Subordinated Notes is required to be delivered under the Securities Act, any event occurs as a result of which (i) the Prospectus, the Final Term Sheet or any Issuer Free Writing Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; or (ii) it is necessary at any time to amend the Prospectus, the Final Term Sheet or any Issuer Free Writing Prospectus to comply with the Securities Act, the Company promptly will (y) notify the Underwriters through the Representatives to suspend solicitation of purchases of the Junior Subordinated

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Notes and, (z) at its expense, prepare and file with the Commission an amendment or supplement which will correct such statement or omission or an amendment which will effect such compliance. During the period specified above, the Company will continue to prepare and file with the Commission on a timely basis all documents or amendments required under the Securities Exchange Act and the applicable rules and regulations of the Commission thereunder; provided, that the Company shall not file such documents or amendments without also furnishing copies thereof to the Representatives and Troutman Pepper Hamilton Sanders LLP. Any such documents or amendments which are electronically available through EDGAR shall be deemed to have been furnished by the Company to the Representatives and Troutman Pepper Hamilton Sanders LLP.

(e) The Company will advise the Representatives promptly of any proposal to amend or supplement the Registration Statement or the Prospectus and will afford the Representatives a reasonable opportunity to comment on any such proposed amendment or supplement prior to filing; and the Company will also advise the Representatives promptly of the filing of any such amendment or supplement, of the institution by the Commission of any stop order proceedings in respect of the Registration Statement or of any part thereof, or of receipt from the Commission of any notice of objection to the use of the Registration Statement or any supplement or amendment thereto pursuant to Rule 401(g)(2) under the Securities Act, and will use its best efforts to prevent the issuance of any such stop order or any such notice of objection and to obtain as soon as possible their lifting, if issued.

(f) The Company will make generally available to its security holders, as soon as it is practicable to do so, an earnings statement of the Company (in reasonable detail, in form complying with the provisions of Rule 158 under the Securities Act and which need not be audited), covering a period of at least 12 months beginning within three months after the “effective date” (as defined in Rule 158 under the Securities Act) of the Registration Statement, which earnings statement shall satisfy the requirements of Section 11(a) of the Securities Act.

(g) The Company will furnish such information as may be lawfully required for, and otherwise cooperate in, qualifying the Junior Subordinated Notes for offer and sale under the securities or blue sky laws of such jurisdictions as the Representatives may designate; provided, however, that the Company shall not be required in any state to qualify as a foreign corporation, or to file a general consent to service of process, or to submit to any requirements which it deems unduly burdensome.

(h) Fees and disbursements of Troutman Pepper Hamilton Sanders LLP, who is acting as counsel for the Underwriters, (exclusive of fees and disbursements of Troutman Pepper Hamilton Sanders LLP which are to be paid as set forth in Section 6(c)) shall be paid by the Underwriters; provided, however, that if this Agreement is terminated in accordance with the provisions of Sections 7 or 8 hereof, the Company shall reimburse the Representatives for the account of the Underwriters for the amount of such fees and disbursements.

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(i) During the period beginning on the date of this Agreement and continuing to and including the Closing Date, the Company will not, without the prior written consent of the Representatives, directly or indirectly, sell or offer to sell or otherwise dispose of any Junior Subordinated Notes or any security convertible into or exchangeable for Junior Subordinated Notes or any debt securities substantially similar to Junior Subordinated Notes (except for the Junior Subordinated Notes issued pursuant to this Agreement).

7. Conditions of Underwriters’ Obligations; Termination by the Underwriters.

(a) The obligations of the Underwriters to purchase and pay for the Junior Subordinated Notes on the Closing Date shall be subject to the following conditions:

(i) No stop order suspending the effectiveness of the Registration Statement shall be in effect on the Closing Date and no proceedings for that purpose shall be pending before or, to the knowledge of the Company, threatened by the Commission on such date. The Representatives shall have received, prior to payment for the Junior Subordinated Notes, a certificate dated the Closing Date, and signed by the President or any Vice President of the Company to the effect that no such stop order is in effect and that no proceedings for such purpose are pending before or, to the knowledge of the Company, threatened by the Commission.

(ii) On the Closing Date, the Representatives shall receive, on behalf of the several Underwriters, the opinions of Troutman Pepper Hamilton Sanders LLP, counsel to the Underwriters, McGuireWoods LLP, counsel to the Company, and the Company’s General Counsel, substantially in the forms attached hereto as Schedules III, IV and V, respectively.

(iii) The Representatives shall have received from Deloitte & Touche LLP on the date of this Agreement and on the Closing Date letters addressed to the Representatives (i) confirming that they are an independent registered public accounting firm within the meaning of the Securities Act and the applicable rules and regulations thereunder adopted by the SEC and the Public Company Accounting Oversight Board and (ii) stating, as of such date, the conclusions and findings of such firm with respect to the financial statements and certain financial information contained in or incorporated by reference into the Time of Sale Information or the Prospectus, including any pro forma financial information, and other matters ordinarily covered by accountants’ “comfort letters” to underwriters in connection with registered public offerings.

(iv) Subsequent to the execution of this Agreement and prior to the Closing Date, (A) except as reflected in, or contemplated by, the Registration Statement, the Time of Sale Information or the Prospectus (exclusive of amendments or supplements after the date hereof), there shall not have occurred (1) any change in the debt securities of the Company of the same class as the Junior Subordinated Notes or any class senior to the Junior Subordinated Notes (other than a decrease in the aggregate principal amount thereof outstanding or issuances of commercial paper in the ordinary course of business), (2) any material adverse

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change in the general affairs, financial condition or earnings of the Company and its subsidiaries taken as a whole or (3) any material transaction entered into by the Company other than a transaction in the ordinary course of business, the effect of which in each such case in the reasonable judgment of the Representatives is so material and so adverse that it makes it impracticable to proceed with the public offering or delivery of the Junior Subordinated Notes on the terms and in the manner contemplated in the Time of Sale Information, the Prospectus and this Agreement, and (B) there shall not have occurred (1) a downgrading in the rating accorded the debt securities of the Company of the same class as the Junior Subordinated Notes or any class senior to the Junior Subordinated Notes, by any “nationally recognized statistical rating organization” (as that term is defined in Section 3 of the Securities Exchange Act) and no such organization shall have given any notice of any intended or potential downgrading or of any review for a possible change with possible negative implications in its ratings of such securities, (2) any general suspension of trading in securities on the New York Stock Exchange or any limitation on prices for such trading or any restrictions on the distribution of securities established by the New York Stock Exchange or by the Commission or by any federal or state agency or by the decision of any court that shall, in the reasonable judgment of the Representatives, make it impracticable to proceed with the public offering or delivery of the Junior Subordinated Notes on the terms and in the manner contemplated in the Time of Sale Information, the Prospectus and this Agreement, (3) a suspension of trading of any securities of the Company on the New York Stock Exchange, (4) a banking moratorium declared either by federal or New York State authorities or (5) any outbreak or escalation of major hostilities in which the United States is involved, any declaration of war by the United States Congress or any other substantial national or international calamity or crisis resulting in the declaration of a national emergency, or any material adverse change in the financial markets; provided the effect of such outbreak, escalation, declaration, calamity, crisis or material adverse change shall, in the reasonable judgment of the Representatives, make it impracticable to proceed with the public offering or delivery of the Junior Subordinated Notes on the terms and in the manner contemplated in the Time of Sale Information, the Prospectus and this Agreement.

(v) On the Closing Date, the representations and warranties of the Company in this Agreement shall be true and correct as if made on and as of such date, and the Company shall have performed all obligations and satisfied all conditions required of it under this Agreement; and, on the Closing Date, the Representatives shall have received a certificate to such effect signed by the President or any Vice President of the Company.

(vi) All legal proceedings to be taken in connection with the issuance and sale of the Junior Subordinated Notes shall have been satisfactory in form and substance to Troutman Pepper Hamilton Sanders LLP.

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(b) In case any of the conditions specified above in Section 7(a) shall not have been fulfilled, this Agreement may be terminated by the Representatives upon mailing or delivering written notice thereof to the Company; provided, however, that in case the conditions specified in subsections 7(a)(v) and (vi) shall not have been fulfilled, this Agreement may not be so terminated by the Representatives unless Underwriters who have agreed to purchase in the aggregate 50% or more of the aggregate principal amount of the Junior Subordinated Notes shall have consented to such termination and the aforesaid notice shall so state. Any such termination shall be without liability of any party to any other party except as otherwise provided in Sections 6(c), 6(h), 7(c) and 9 hereof.

(c) If this Agreement shall be terminated by the Representatives pursuant to Section 7(b) above or because of any failure or refusal on the part of the Company to comply with the terms or to fulfill any of the conditions of this Agreement, or if for any reason the Company shall be unable to perform its obligations under this Agreement, then in any such case, the Company will reimburse the Underwriters, severally, for all out-of-pocket expenses (in addition to the fees and disbursements of their outside counsel as provided in Section 6(h)) reasonably incurred by such Underwriters in connection with this Agreement or the offering contemplated hereunder and, upon such reimbursement, the Company shall be absolved from any further liability hereunder, except as provided in Sections 6(c) and 9.

8. Conditions of the Obligation of the Company. The obligation of the Company to deliver the Junior Subordinated Notes shall be subject to the conditions set forth in the first sentence of Section 7(a)(i) and in Section 7(a)(ii). In case such conditions shall not have been fulfilled, this Agreement may be terminated by the Company by mailing or delivering written notice thereof to the Representatives. Any such termination shall be without liability of any party to any other party except as otherwise provided in Sections 6(c), 6(h), 9 and 10 hereof.

9. Indemnification and Contribution.

(a) The Company agrees to indemnify and hold harmless each Underwriter, its directors and officers, any broker-dealer affiliate of an Underwriter and each person who controls any Underwriter within the meaning of Section 15 of the Securities Act or Section 20(a) of the Securities Exchange Act, against any and all losses, claims, damages or liabilities, joint or several, to which they or any of them may become subject under the Securities Act, the Securities Exchange Act, or any other statute or common law and to reimburse each such Underwriter, director, officer, broker-dealer affiliate and controlling person for any legal or other expenses (including, to the extent hereinafter provided, reasonable and documented outside counsel fees) incurred by them in connection with investigating or defending any such losses, claims, damages, or liabilities, or in connection with defending any actions, insofar as such losses, claims, damages, liabilities, expenses or actions arise out of or are based upon any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, any Preliminary Prospectus (if and when used on or prior to the date hereof), the Time of Sale Information, any Issuer Free Writing Prospectus or the Prospectus, or in any such document as amended or supplemented (if any amendments or supplements thereto shall have been furnished), or the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading; and provided, however, that the indemnity agreement contained in this Section 9(a) shall not apply to any such losses,

12

claims, damages, liabilities, expenses or actions arising out of or based upon any such untrue statement or alleged untrue statement, or any such omission or alleged omission, if such statement or omission was made in reliance upon information furnished herein or otherwise in writing to the Company by or on behalf of any Underwriter through the Representatives for use in the Registration Statement or any amendment thereto, in the Prospectus or any supplement thereto, in any Preliminary Prospectus or in the Time of Sale Information. The indemnity agreement of the Company contained in this Section 9(a) and the representations and warranties of the Company contained in Section 3A hereof shall remain operative and in full force and effect, regardless of any investigation made by or on behalf of any Underwriter or any such director, officer, broker-dealer affiliate or controlling person, and shall survive the delivery of the Junior Subordinated Notes.

(b) Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless the Company, its officers and directors, and each person who controls the Company within the meaning of Section 15 of the Securities Act or Section 20(a) of the Securities Exchange Act, against any and all losses, claims, damages or liabilities, joint or several, to which they or any of them may become subject under the Securities Act, the Securities Exchange Act, or any other statute or common law and to reimburse each of them for any legal or other expenses (including, to the extent hereinafter provided, reasonable and documented outside counsel fees) incurred by them in connection with investigating or defending any such losses, claims, damages or liabilities or in connection with defending any actions, insofar as such losses, claims, damages, liabilities, expenses or actions arise out of or are based upon any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or the Prospectus, or in either such document as amended or supplemented (if any amendments or supplements thereto shall have been furnished), any Preliminary Prospectus (if and when used prior to the date hereof), or the Time of Sale Information or the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading if such statement or omission was made in reliance upon information furnished herein or in writing to the Company by or on behalf of such Underwriter for use in the Registration Statement or the Prospectus or any amendment or supplement to either thereof, any Preliminary Prospectus or the Time of Sale Information. The indemnity agreement of the respective Underwriters contained in this Section 9(b) shall remain operative and in full force and effect, regardless of any investigation made by or on behalf of the Company or any such director, officer or controlling person, and shall survive the delivery of the Junior Subordinated Notes.

(c) The Company and each of the Underwriters agree that, upon the receipt of notice of the commencement of any action against the Company or any of its officers or directors or any person controlling the Company, or against such Underwriter or any of its directors, officers, broker-dealer affiliates or controlling persons as aforesaid, in respect of which indemnity may be sought on account of any indemnity agreement contained herein, it will promptly give written notice of the commencement thereof to the party or parties against whom indemnity shall be sought hereunder, but the omission so to notify such indemnifying party or parties of any such action shall not relieve such indemnifying party or parties from any liability which it or they may have to the indemnified party otherwise than on account of such indemnity agreement. In case such notice of any such

13

action shall be so given, such indemnifying party shall be entitled to participate at its own expense in the defense or, if it so elects, to assume (in conjunction with any other indemnifying parties) the defense of such action, in which event such defense shall be conducted by counsel chosen by such indemnifying party (or parties) and satisfactory to the indemnified party or parties who shall be defendant or defendants in such action, and such defendant or defendants shall bear the fees and expenses of any additional outside counsel retained by them; provided that, if the defendants (including impleaded parties) in any such action include both the indemnified party and the indemnifying party (or parties) and the indemnified party shall have reasonably concluded that there may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the indemnifying party (or parties), the indemnified party shall have the right to select separate counsel to assert such legal defenses and to participate otherwise in the defense of such action on behalf of such indemnified party. The indemnifying party shall bear the reasonable and documented fees and expenses of outside counsel retained by the indemnified party if (i) the indemnified party shall have retained such counsel in connection with the assertion of legal defenses in accordance with the proviso to the preceding sentence (it being understood, however, that the indemnifying party shall not be liable for the expenses of more than one separate counsel (in addition to one local counsel), representing the indemnified parties under Section 9(a) or 9(b), as the case may be, who are parties to such action), (ii) the indemnifying party shall have elected not to assume the defense of such action, (iii) the indemnifying party shall not have employed counsel satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of the commencement of the action, or (iv) the indemnifying party has authorized the employment of counsel for the indemnified party at the expense of the indemnifying party. Notwithstanding the foregoing sentence, an indemnifying party shall not be liable for any settlement of any proceeding effected without its written consent (such consent not to be unreasonably withheld), but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party agrees to indemnify the indemnified party from and against any loss or liability by reason of such settlement or judgment. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened proceeding in respect of which indemnification may be sought hereunder (whether or not the indemnified party is an actual or potential party to such a proceeding), unless such settlement (x) includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of such proceeding and (y) does not include a statement as to or an admission of fault, culpability or failure to act by or on behalf of any indemnified party.

(d) If the indemnification provided for in Section 9(a) or 9(b) is unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, claims, damages or liabilities (or actions in respect thereof) referred to therein, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect the relative fault of the Company, on the one hand, and of the Underwriters, on the other, in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities (or actions in respect thereof), as well as any other relevant equitable considerations, including relative benefit. The relative

14

fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact required to be stated therein or necessary in order to make the statements therein not misleading relates to information supplied by the Company on the one hand or by the Underwriters on the other and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 9(d) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 9(d). The amount paid or payable by an indemnified party as a result of the losses, claims, damages or liabilities (or actions in respect thereof) referred to above in this Section 9(d) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters’ obligations under this Section 9(d) to contribute are several in proportion to their respective underwriting obligations and not joint. The remedies provided for in this Section 9 are not exclusive and shall not limit any rights or remedies which may otherwise be available to any indemnified party at law or in equity.

10. Termination. If any one or more of the Underwriters shall fail or refuse to purchase the Junior Subordinated Notes which it or they have agreed to purchase hereunder, and the aggregate principal amount of the Junior Subordinated Notes which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase is not more than one-tenth of the aggregate principal amount of the Junior Subordinated Notes, then the other Underwriters shall be obligated severally in the proportions which the principal amount of the Junior Subordinated Notes set forth opposite their respective names in Schedule I bears to the aggregate underwriting obligations of all non-defaulting Underwriters, or in such other proportions as the Underwriters may specify, to purchase the Junior Subordinated Notes which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase. If any Underwriter or Underwriters shall so fail or refuse to purchase Junior Subordinated Notes and the aggregate principal amount of the Junior Subordinated Notes with respect to which such default occurs is more than one-tenth of the aggregate principal amount of the Junior Subordinated Notes and arrangements satisfactory to the Underwriters and the Company for the purchase of such Junior Subordinated Notes are not made within 36 hours after such default, this Agreement will terminate without liability on the part of any non-defaulting Underwriter (except as provided in Sections 6(h) and 9) or of the Company (except as provided in Sections 6(c) and 9). In any such case not involving a termination, either the Representatives or the Company shall have the right to postpone the Closing Date, but in no event for longer than seven days, in order that the required changes, if any, in the Registration Statement and in the Prospectus or in any other documents or arrangements may be effected. Any action taken under this Section 10 shall not relieve any defaulting Underwriter from liability in respect of any default of such Underwriter under this Agreement.

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11. Recognition of the U.S. Special Resolution Regimes.

(a) In the event that any Underwriter that is a Covered Entity becomes subject to a proceeding under a U.S. Special Resolution Regime, the transfer from such Underwriter of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state of the United States.

(b) In the event that any Underwriter that is a Covered Entity or a BHC Act Affiliate of such Underwriter becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against such Underwriter are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state of the United States.

(c) For purposes of this Section 11, (i) the term “BHC Act Affiliate” has the meaning assigned to the term “affiliate” in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k); (ii) the term “Covered Entity” means any of the following: (1) a “covered entity” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 252.82(b); (2) a “covered bank” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 47.3(b); or (3) a “covered FSI” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 382.2(b); (iii) the term “Default Rights” has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable; and (iv) the term “U.S. Special Resolution Regime” means each of (1) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (2) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

12. Representations, Warranties and Agreements to Survive Delivery. All representations, warranties and agreements contained in this Agreement or contained in certificates of officers of the Company submitted pursuant hereto shall remain operative and in full force and effect regardless of any investigation made by or on behalf of any Underwriter or any controlling person of any Underwriter, or by or on behalf of the Company, and shall survive delivery of the Junior Subordinated Notes.

13. Miscellaneous. The validity and interpretation of this Agreement shall be governed by the laws of the State of New York. This Agreement shall inure to the benefit of the Company, the Underwriters and, with respect to the provisions of Section 9 hereof, each controlling person and each officer and director of the Company and the Underwriters referred to in Section 9, and their respective successors, assigns, executors and administrators. Nothing in this Agreement is intended or shall be construed to give to any other person, firm or corporation any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. The term “successors” as used in this Agreement shall not include any purchaser, as such, of any of the Junior Subordinated Notes from any of the several Underwriters. The Company and the Underwriters each acknowledge and agree that in connection with all aspects of each transaction contemplated by this Agreement, (i) the Company and the Underwriters have an arms length business relationship that creates no fiduciary duty on the part of either party and each expressly disclaims any fiduciary relationship, except that the Underwriters acknowledge that they owe a

16

duty of trust or confidence to the Company as contemplated by paragraph (b)(2)(i) of Rule 100 (17 CFR §243.100) of Regulation FD under the Securities Exchange Act, (ii) the Underwriters owe the Company only those duties and obligations set forth in this Agreement, any contemporaneous written agreement and prior written agreements (to the extent not superseded by this Agreement), if any, (iii) the Underwriters may have interests that differ from those of the Company, and (iv) none of the activities of the Underwriters in connection with the transactions contemplated herein constitutes a recommendation, investment advice, or solicitation of any action by the Underwriters with respect to any entity or natural person. The Company waives to the full extent permitted by applicable law any claims it may have against the Underwriters arising from an alleged breach of fiduciary duty in connection with the sale and distribution of the Junior Subordinated Notes.

14. Counterparts. This Agreement may be signed in two or more counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. Counterparts may be delivered via facsimile, electronic mail (including any electronic signature covered by the U.S. Federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable law, e.g., www.docusign.com) or other transmission method, and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

15. Notices. All communications hereunder shall be in writing and if to the Underwriters shall be mailed, faxed or delivered to the Representatives at the address set forth on Schedule II hereto, or if to the Company shall be mailed, faxed or delivered to it, attention of Assistant Treasurer, Dominion Energy, Inc., 120 Tredegar Street, Richmond, Virginia 23219 (facsimile number: (804) 819-2211).

[remainder of this page left blank intentionally]

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Please sign and return to us a counterpart of this letter, whereupon this letter will become a binding agreement between the Company and the several Underwriters in accordance with its terms.

18

The foregoing agreement is hereby

confirmed and accepted, as of the

date first above written.

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SCHEDULE I

I-1

SCHEDULE II

Title of Junior Subordinated Notes: 2024 Series C Enhanced Junior Subordinated Notes due 2055

Aggregate Principal Amount: $1,250,000,000

Initial Price to Public: 100.000% of the principal amount of the Junior Subordinated Notes, plus accrued interest, if any, from the date of issue

Initial Purchase Price to be Paid by Underwriters: 99.000% of the principal amount of the Junior Subordinated Notes

Time of Delivery:  November 18, 2024, 10:00 A.M.

Closing Location:  McGuireWoods LLP

Gateway Plaza

800 East Canal Street

Richmond, Virginia 23219

The Junior Subordinated Notes will be available for inspection by the Representatives at:

McGuireWoods LLP

Gateway Plaza

800 East Canal Street

Richmond, Virginia 23219

Addresses for Notices to the Underwriters:

BofA Securities, Inc.

114 West 47th Street

NY8-114-07-01

New York, New York 10036

Attention: High Grade Transaction Management/Legal

Facsimile: (212) 901-7881

II-1

Goldman Sachs & Co. LLC

200 West Street

New York, New York 10282

Attention: Registration Department

Facsimile: (212) 902-3000

Wells Fargo Securities, LLC

500 South Tryon Street

Charlotte, North Carolina 28202

Attention: Transaction Management

Email: tmgcapitalmarkets@wellsfargo.com

With a copy of any notice pursuant to Section 9(c) also sent to:

Troutman Pepper Hamilton Sanders LLP

Troutman Pepper Building

1001 Haxall Point

Richmond, Virginia 23219

Attention: David I. Meyers

Telephone: (804) 697-1239

Facsimile: (804) 698-5176

II-2

SCHEDULE III

PROPOSED FORM OF OPINION

OF

TROUTMAN PEPPER HAMILTON SANDERS LLP

Troutman Pepper Building

1001 Haxall Point

Richmond, Virginia 23219

November 18, 2024

DOMINION ENERGY, INC.

$1,250,000,000 2024 Series C Enhanced Junior Subordinated Notes due 2055

BofA Securities, Inc.

Goldman Sachs & Co. LLC

Wells Fargo Securities, LLC

as Representatives for the Underwriters

listed in Schedule I to the Underwriting Agreement

One Bryant Park

New York, New York 10036

Goldman Sachs & Co. LLC

200 West Street

New York, New York 10282

Wells Fargo Securities, LLC

550 South Tryon Street

Charlotte, North Carolina 28202

Ladies and Gentlemen:

We have acted as your counsel in connection with the arrangements for issuance by Dominion Energy, Inc. (the Company) of up to U.S. $1,250,000,000 aggregate principal amount of its 2024 Series C Enhanced Junior Subordinated Notes due 2055 (the Junior Subordinated Notes) and the offering of the Junior Subordinated Notes by you pursuant to an Underwriting Agreement dated November 14, 2024, by and among you and the Company (the Underwriting Agreement). This letter is being delivered to you pursuant to the Underwriting Agreement. All terms not otherwise defined herein shall have the meanings set forth in the Underwriting Agreement.

III-1

We have examined originals, or copies certified to our satisfaction, of such corporate records of the Company, indentures, agreements and other instruments, certificates of public officials, certificates of officers and representatives of the Company and the Series Trustee, and other documents, as we have deemed necessary as a basis for the opinions hereinafter expressed. As to various questions of fact material to such opinions, we have, when relevant facts were not independently established, relied upon certifications by officers of the Company and the Series Trustee and other appropriate persons and statements contained in the Registration Statement hereinafter mentioned. All legal proceedings taken as of the date hereof in connection with the transactions contemplated by the Underwriting Agreement have been satisfactory to us.

In addition, we attended the closing held today at which the Company satisfied the conditions contained in Section 7 of the Underwriting Agreement that are required to be satisfied as of the Closing Date.

Based upon the foregoing, and having regard to legal considerations that we deem relevant, we are of the opinion that:

1. The Company is a corporation duly incorporated and existing as a corporation in good standing under the laws of Virginia, and has the corporate power to transact its business as described in the Time of Sale Information and the Prospectus.

2. No approval or consent by any public regulatory body is legally required in connection with the sale of the Junior Subordinated Notes as contemplated by the Underwriting Agreement (except to the extent that compliance with the provisions of securities or blue sky laws of certain states may be required in connection with the sale of the Junior Subordinated Notes in such states) and the carrying out of the provisions of the Underwriting Agreement.

3. The Underwriting Agreement has been duly authorized by all necessary corporate action and has been duly executed and delivered by the Company.

4. The Indenture has been duly authorized, executed and delivered by the Company and has been duly qualified under the Trust Indenture Act and constitutes a valid and binding obligation of the Company, enforceable against the Company in accordance with its terms under the laws of the State of New York, except as enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally or by general equitable principles (regardless of whether enforcement is considered in a proceeding in equity or at law).

5. The Junior Subordinated Notes have been duly authorized and executed by the Company and when completed and authenticated by the Series Trustee in accordance with, and in the form contemplated by, the Indenture and issued, delivered and paid for as provided in the Underwriting Agreement, will have been duly issued under the Indenture and will constitute valid and binding obligations of the Company entitled to the benefits provided by the Indenture, enforceable against the Company in accordance with their terms, under the laws of the State of New York, except as enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally or by general equitable principles (regardless of whether enforcement is considered in a proceeding in equity or at law).

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6. The Registration Statement (Reg. No. 333-269879) with respect to the Junior Subordinated Notes filed pursuant to the Securities Act is an “automatic shelf registration statement” as defined under Rule 405 of the Securities Act that was filed with the Commission not earlier than three years prior to the Closing Date, and the Prospectus may lawfully be used for the purposes specified in the Securities Act in connection with the offer for sale of Junior Subordinated Notes in the manner therein specified.

7. The Registration Statement, the Preliminary Prospectus and the Prospectus (except that we express no comment or belief with respect to any historical or pro forma financial statements and schedules and other financial or statistical information contained or incorporated by reference in the Registration Statement or Prospectus) appear on their face to be appropriately responsive in all material respects to the requirements of the Securities Act, and to the applicable rules and regulations of the Commission thereunder.

8. We are of the opinion that the statements relating to the Junior Subordinated Notes contained in the Base Prospectus under DESCRIPTION OF DEBT SECURITIES and ADDITIONAL TERMS OF THE JUNIOR SUBORDINATED NOTES, as supplemented by the statements under DESCRIPTION OF THE JUNIOR SUBORDINATED NOTES in the Prospectus Supplement dated November 14, 2024 are substantially accurate and fair.

9. With regard to the discussion in the Prospectus Supplement dated November 14, 2024, under the caption MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS, subject to the limitations, qualifications and assumptions set forth therein, we are of the opinion that under current U.S. federal income tax law, although the discussion does not purport to disclose all possible U.S. federal income tax consequences of the purchase, ownership or disposition of the Junior Subordinated Notes, such discussion constitutes an accurate summary of the matters discussed therein in all material respects. In rendering the aforementioned opinion, we have considered the current provisions of the Internal Revenue Code of 1986, as amended, Treasury regulations promulgated thereunder, judicial decisions and Internal Revenue Service rulings, all as in effect as of the date of the Prospectus Supplement, and all of which are subject to change at any time, which changes may be retroactively applied. Any such change in the authorities upon which our opinion is based could affect the statements provided in the discussion.

*  *  *  *  *

We have not undertaken to determine independently the accuracy or completeness of the statements contained or incorporated by reference in the Registration Statement, the Time of Sale Information or in the Prospectus, and as to the statistical statements in the Registration Statement (which includes statistical statements in the Incorporated Documents), we have relied solely on the officers of the Company. We accordingly assume no responsibility for the accuracy or completeness of the statements made in the Registration Statement, except as stated above in numbered paragraphs 8 and 9 in regard to the statements described in such numbered paragraphs 8 and 9. We note that the Incorporated Documents were prepared and filed by the Company

III-3

without our participation. We have, however, participated in conferences with counsel for and representatives of the Company in connection with the preparation of the Registration Statement, the Time of Sale Information, the Prospectus as it was initially issued and as it has been supplemented or amended, and we have reviewed the Incorporated Documents and such of the corporate records of the Company as we deemed advisable. In addition, we participated in one or more due diligence conferences with representatives of the Company and attended the closing at which the Company satisfied the conditions contained in the Underwriting Agreement. None of the foregoing participation, review or attendance disclosed to us any information that gives us reason to believe that the Registration Statement contained on the most recent effective date of the Registration Statement or contains on the date hereof any untrue statement of a material fact or omitted or omits to state a material fact required to be stated therein or necessary to make the statements therein not misleading, or that the Time of Sale Information contained at the Time of Sale, or the Prospectus contained on its date or the date it was supplemented or amended, or that the Prospectus contains on the date hereof, any untrue statement of a material fact or omitted (or, with respect to the Prospectus, now omits) to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading (in all cases, excepting the financial statements and schedules and other financial information contained or incorporated therein by reference, any pro forma financial information and notes thereto, and the Statement of Eligibility of the Indenture Trustee filed on Form T-1 under the Trust Indenture Act, included or incorporated by reference into the Registration Statement or the Prospectus, as to which we express no belief).

In rendering the opinions set forth in paragraphs (1) – (9) above and in making the statements expressed in the preceding paragraph, we do not purport to express an opinion on any laws other than those of the Commonwealth of Virginia, the State of New York and the United States of America. This opinion may not be relied upon by, nor may copies be delivered to, any person without our prior written consent, except that we hereby consent to disclosure of this opinion letter by any Underwriter on a confidential basis to: (i) any regulatory authority having jurisdiction over such Underwriter and (ii) any other person pursuant to orders or legal process of any court or as otherwise required of such Underwriter by law, in the case of each of clauses (i) and (ii) above, solely for the purpose of establishing the existence of this opinion letter and on the condition and understanding that no such regulatory authority or other person is authorized to rely on the foregoing opinions for any other purpose.

III-4

SCHEDULE IV

PROPOSED FORM OF OPINION

OF

MCGUIREWOODS LLP

Gateway Plaza

800 East Canal Street

Richmond, Virginia 23219

November 18, 2024

DOMINION ENERGY, INC.

$1,250,000,000 2024 Series C Enhanced Junior Subordinated Notes due 2055

BofA Securities, Inc.

Goldman Sachs & Co. LLC

Wells Fargo Securities, LLC

as Representatives for the Underwriters

listed in Schedule I to the Underwriting Agreement

One Bryant Park

New York, New York 10036

Goldman Sachs & Co. LLC

200 West Street

New York, New York 10282

Wells Fargo Securities, LLC

550 South Tryon Street

Charlotte, North Carolina 28202

Ladies and Gentlemen:

We have acted as counsel to Dominion Energy, Inc., a Virginia corporation (the Company), in connection with the issuance and sale by the Company of up to U.S. $1,250,000,000 aggregate principal amount of its 2024 Series C Enhanced Junior Subordinated Notes due 2055 (the Junior Subordinated Notes) pursuant to an Underwriting Agreement dated November 14, 2024, by and among the Company and the Underwriters listed on Schedule I attached thereto (the Underwriting Agreement). This letter is being delivered to you pursuant to the Underwriting Agreement. All terms not otherwise defined herein have the meanings set forth in the Underwriting Agreement.

IV-1

We have examined originals, or copies certified to our satisfaction, of such corporate records of the Company, indentures, agreements, and other instruments, certificates of public officials, certificates of officers and representatives of the Company and the Series Trustee, and other documents, as we have deemed necessary as a basis for the opinions hereinafter expressed. As to various questions of fact material to such opinions, we have, when relevant facts were not independently established, relied upon certifications by officers of the Company, the Series Trustee and other appropriate persons and statements contained in the Registration Statement hereinafter mentioned. All legal proceedings taken as of the date hereof in connection with the transactions contemplated by the Underwriting Agreement have been satisfactory to us.

On this basis we are of the opinion that:

1. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency, domestic or foreign (other than those required under the Securities Act and the Rules and Regulations, which have been obtained, or as may be required under the securities or blue sky laws of the various states) is necessary or required in connection with the due authorization, execution and delivery of the Underwriting Agreement or the due execution, delivery or performance of the Indenture by the Company or for the offering, issuance, sale or delivery of the Junior Subordinated Notes as contemplated by the Underwriting Agreement.

2. The Underwriting Agreement has been duly authorized, executed and delivered by the Company.

3. The Indenture has been duly authorized, executed and delivered by the Company and has been duly qualified under the Trust Indenture Act and constitutes a valid and binding obligation of the Company, enforceable against the Company in accordance with its terms, under the laws of the State of New York, except as enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally or by general equitable principles (regardless whether enforcement is considered in a proceeding in equity or at law).

4. The Junior Subordinated Notes have been duly authorized and executed by the Company and, when completed and authenticated by the Series Trustee in accordance with, and in the form contemplated by, the Indenture and issued, delivered and paid for as provided in the Underwriting Agreement, will have been duly issued under the Indenture and will constitute valid and binding obligations of the Company entitled to the benefits provided by the Indenture, enforceable against the Company in accordance with their terms, under the laws of the State of New York, except as enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally or by general equitable principles (regardless whether enforcement is considered in a proceeding in equity or at law).

IV-2

5. The Registration Statement (Reg. No. 333-269879) with respect to the Junior Subordinated Notes filed pursuant to the Securities Act is an “automatic shelf registration statement” as defined under Rule 405 of the Securities Act that was filed with the Commission not earlier than three years prior to the Closing Date, and the Prospectus may lawfully be used for the purposes specified in the Securities Act in connection with the offer for sale of Junior Subordinated Notes in the manner therein specified.

6. The Registration Statement, the Preliminary Prospectus and the Prospectus (except the financial statements, any pro forma financial information and schedules contained or incorporated by reference therein, as to which we express no opinion) appear on their face to be appropriately responsive in all material respects to the requirements of the Securities Act, and to the applicable rules and regulations of the Commission thereunder.

7. We are of the opinion that the statements relating to the Junior Subordinated Notes contained in the Base Prospectus under DESCRIPTION OF DEBT SECURITIES and ADDITIONAL TERMS OF THE JUNIOR SUBORDINATED NOTES, as supplemented by the statements under DESCRIPTION OF THE JUNIOR SUBORDINATED NOTES in the Prospectus Supplement dated November 14, 2024 are substantially accurate and fair.

8. With regard to the discussion in the Prospectus Supplement dated November 14, 2024, under the caption MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS, subject to the limitations, qualifications and assumptions set forth therein, we are of the opinion that under current U.S. federal income tax law, although the discussion does not purport to disclose all possible U.S. federal income tax consequences of the purchase, ownership or disposition of the Junior Subordinated Notes, such discussion constitutes an accurate summary of the matters discussed therein in all material respects. In rendering the aforementioned opinion, we have considered the current provisions of the Internal Revenue Code of 1986, as amended, Treasury regulations promulgated thereunder, judicial decisions and Internal Revenue Service rulings, all of which are subject to change, which changes may be retroactively applied. A change in the authorities upon which our opinion is based could affect the discussion.

**********

We have participated in conferences with officers and other representatives of the Company and your representatives at which the contents of the Registration Statement, the Time of Sale Information and the Prospectus were discussed, and we have consulted with officers and other employees of the Company to inform them of the disclosure requirements of the Securities Act. We have examined various reports, records, contracts and other documents of the Company and orders and instruments of public officials, which our investigation led us to deem pertinent. In addition, we participated in one or more due diligence conferences with representatives of the Company and attended the closing at which the Company satisfied the conditions contained in Section 7 of the Underwriting Agreement. We have not, however, undertaken to make any independent review of other records of the Company which our investigation did not lead us to deem pertinent. As to the statistical statements in the Registration Statement (which includes the Incorporated Documents), we have relied solely on the officers of the Company. We accordingly assume no responsibility for the accuracy or completeness of the statements made in the Registration Statement, except as stated above in numbered paragraphs 7 and 8 in regard to the statements described in such paragraphs 7 and 8. But such conferences, consultation, examination and attendance disclosed to us no information with respect to such other matters that gives us

IV-3

reason to believe that the Registration Statement contained on the most recent effective date of the Registration Statement or contains on the date hereof any untrue statement of a material fact or omitted on such date or omits on the date hereof to state a material fact required to be stated therein or necessary to make the statements therein not misleading, or that the Time of Sale Information contained at the Time of Sale, the Prospectus contained as of its date, or that the Prospectus contains on the date hereof, any untrue statement of a material fact or omitted on such date or omits on the date hereof to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading (in each case, except with respect to the financial statements, any pro forma financial information and schedules and other financial information and the Statement of Eligibility of the Indenture Trustee filed on Form T-1 under the Trust Indenture Act, contained or incorporated by reference in the Registration Statement, the Time of Sale Information or the Prospectus). The foregoing assurance is provided on the basis that, except as otherwise provided in Section 3A(a) of the Underwriting Agreement with respect to the Time of Sale Information, any statement contained in an Incorporated Document will be deemed not to be contained in the Registration Statement, the Time of Sale Information or the Prospectus if the statement has been modified or superseded by any statement in a subsequently filed Incorporated Document or in the Registration Statement, the Time of Sale Information or the Prospectus.

We do not purport to express an opinion on any laws other than those of the Commonwealth of Virginia, the State of New York and the United States of America. This opinion may not be relied upon by, nor may copies be delivered to, any person without our prior written consent, except that we hereby consent to disclosure of this opinion letter by any Underwriter on a confidential basis to: (i) any regulatory authority having jurisdiction over such Underwriter and (ii) any other person pursuant to orders or legal process of any court or as otherwise required of such Underwriter by law, in the case of each of clauses (i) and (ii) above, solely for the purpose of establishing the existence of this opinion letter and on the condition and understanding that no such regulatory authority or other person is authorized to rely on the foregoing opinions for any other purpose.

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SCHEDULE V

PROPOSED FORM OF OPINION

OF

GENERAL COUNSEL OF

DOMINION ENERGY, INC.

120 Tredegar Street

Richmond, Virginia 23219

November 18, 2024

DOMINION ENERGY, INC.

$1,250,000,000 2024 Series C Enhanced Junior Subordinated Notes due 2055

Ladies and Gentlemen:

The arrangements for issuance of up to U.S. $1,250,000,000 aggregate principal amount of 2024 Series C Enhanced Junior Subordinated Notes due 2055 (the Junior Subordinated Notes) of Dominion Energy, Inc. (the Company), pursuant to an Underwriting Agreement dated November 14, 2024, by and among the Company and the Underwriters listed on Schedule I attached thereto (the Underwriting Agreement), have been taken under my supervision as Vice President and General Counsel of the Company. Terms not otherwise defined herein have the meanings set forth in the Underwriting Agreement.

As Vice President and General Counsel of the Company, I have general responsibility over the attorneys within the Company’s Legal Department responsible for rendering legal counsel to the Company regarding corporate, financial, securities and other matters. I am generally familiar with the organization, business and affairs of the Company. I am also familiar with the proceedings taken and proposed to be taken by the Company in connection with the offering and sale of the Junior Subordinated Notes, and I have examined such corporate records, certificates and other documents and such questions of the law as I have considered necessary or appropriate for the purposes of this opinion. In addition, I have responsibility for supervising lawyers who may have been asked by me or others to review legal matters arising in connection with the offering and sale of the Junior Subordinated Notes. Accordingly, some of the matters referred to herein have not been handled personally by me, but I have been made familiar with the facts and circumstances and the applicable law, and the opinions herein expressed are my own or are opinions of others in which I concur.

V-1

On this basis I am of the opinion that:

1. The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of Virginia, and has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Time of Sale Information and the Prospectus and to enter into and perform its obligations under the Underwriting Agreement; and the Company is duly qualified as a foreign corporation to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing would not result in a Material Adverse Effect.

2. Each Significant Subsidiary of the Company has been duly organized and is validly existing and in good standing under the respective laws of the jurisdiction of its organization, has organizational power and authority to own, lease and operate its properties and to conduct its business as described in the Time of Sale Information and the Prospectus and is duly qualified to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing would not result in a Material Adverse Effect.

3. There are no actions, suits or proceedings pending or, to the best of my knowledge, threatened, to which the Company or one of its subsidiaries is a party or to which any of the Company’s, or any of its subsidiaries’, properties is subject other than any proceedings described in the Time of Sale Information or the Prospectus and proceedings which I believe are not likely to have a Material Adverse Effect on the power or ability of the Company to perform its obligations under the Underwriting Agreement or to consummate the transactions contemplated thereby or by the Time of Sale Information or the Prospectus.

I am a member of the Bar of the Commonwealth of Virginia and I do not purport to express an opinion on any laws other than those of the Commonwealth of Virginia and the United States of America. This opinion may not be relied upon by, nor may copies be delivered to, any person without my prior written consent, except that I hereby consent to disclosure of this opinion letter by any Underwriter on a confidential basis to: (i) any regulatory authority having jurisdiction over such Underwriter and (ii) any other person pursuant to orders or legal process of any court or as otherwise required of such Underwriter by law, in the case of each of clauses (i) and (ii) above, solely for the purpose of establishing the existence of this opinion letter and on the condition and understanding that no such regulatory authority or other person is authorized to rely on the foregoing opinions for any other purpose. I do not undertake to advise you of any changes in the opinions expressed herein resulting from matters that may hereinafter arise or that may hereinafter be brought to my attention.

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Annex A

BofA Securities, Inc.

Goldman Sachs & Co. LLC

Wells Fargo Securities, LLC

as Representatives for the Underwriters

listed in Schedule I to the Underwriting Agreement

One Bryant Park

New York, New York 10036

Goldman Sachs & Co. LLC

200 West Street

New York, New York 10282

Wells Fargo Securities, LLC

550 South Tryon Street

Charlotte, North Carolina 28202

Deutsche Bank Trust Company Americas

1 Columbus Circle, 17^th Floor

Mail Stop: NYC01-1710

New York, New York 10019

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SCHEDULE VI

ISSUER FREE WRITING PROSPECTUSES

Final Term Sheet dated November 14, 2024, containing final pricing and related information:

Filed pursuant to Rule 433

Relating to Preliminary Prospectus Supplement dated November 14, 2024

to Prospectus dated February 21, 2023

Registration No. 333-269879

DOMINION ENERGY, INC.

FINAL TERM SHEET

November 14, 2024

The terms “Reset Period,” “Five-year U.S. Treasury Rate,” “Reset Interest Determination Date,” “Reset Date,” “Tax Event” and “Rating Agency Event” have the meanings given in the issuer’s preliminary prospectus supplement dated November 14, 2024.

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The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC, including the preliminary prospectus supplement dated November 14, 2024, for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling:

VI-2

SCHEDULE VII

OFFERING RESTRICTIONS

Canada

European Economic Area

Hong Kong

Japan

Singapore

Switzerland

Taiwan

United Kingdom

VII-1

Exhibit 4.3

EIGHTEENTH SUPPLEMENTAL INDENTURE

BETWEEN

DOMINION ENERGY, INC.

ISSUER

AND

DEUTSCHE BANK TRUST COMPANY AMERICAS

SERIES TRUSTEE

DATED AS OF NOVEMBER 1, 2024

2024 SERIES C ENHANCED JUNIOR SUBORDINATED NOTES DUE 2055

TABLE OF CONTENTS

EIGHTEENTH SUPPLEMENTAL INDENTURE

THIS EIGHTEENTH SUPPLEMENTAL INDENTURE, dated as of November 1, 2024 (the “Eighteenth Supplemental Indenture”), is between DOMINION ENERGY, INC., a Virginia corporation having its principal office at 120 Tredegar Street, Richmond, Virginia 23219 (the “Company”), and DEUTSCHE BANK TRUST COMPANY AMERICAS, a New York banking corporation, as trustee of the series of Securities established by this Eighteenth Supplemental Indenture, having a corporate trust office at 1 Columbus Circle, 17th Floor, Mail Stop: NYC01-1710, New York, New York 10019 (herein called the “Series Trustee”).

WHEREAS, the Company has heretofore entered into a Junior Subordinated Indenture II, dated as of June 1, 2006, between the Company and The Bank of New York Mellon (successor to JPMorgan Chase Bank, N.A.) (the “Original Trustee”), as supplemented and amended by the Third Supplemental and Amending Indenture, dated as of June 1, 2009 (as so amended, the “Base Indenture”), among the Company, the Original Trustee and the Series Trustee;

WHEREAS, the Base Indenture is incorporated herein by this reference and the Base Indenture, as supplemented and amended by this Eighteenth Supplemental Indenture, and as may be hereafter supplemented or amended from time to time in accordance herewith and therewith, is herein called the “Indenture”;

WHEREAS, under the Base Indenture, a new series of Securities may at any time be established in accordance with the provisions of the Base Indenture and the terms of such series may be described by a supplemental indenture executed by the Company and the Series Trustee;

WHEREAS, the Company proposes to create under the Base Indenture a new series of Securities and to appoint the Series Trustee as Trustee under the Base Indenture with respect to such series of Securities; and

WHEREAS, the Company has requested that the Series Trustee execute and deliver this Eighteenth Supplemental Indenture and all requirements necessary to make this Eighteenth Supplemental Indenture a valid instrument in accordance with its terms, and to make the Junior Subordinated Notes, when executed by the Company and authenticated and delivered by the Series Trustee, the valid obligations of the Company, have been performed, and the execution and delivery of this Eighteenth Supplemental Indenture has been duly authorized in all respects.

NOW, THEREFORE, in consideration of the purchase and acceptance of the Junior Subordinated Notes by the holders, and for the purpose of setting forth, as provided in the Base Indenture, the form and substance of the Junior Subordinated Notes and the terms, provisions and conditions thereof, the Company covenants and agrees with the Series Trustee as follows:

ARTICLE I

DEFINITIONS

1.1 Definition of Terms. For all purposes of this Eighteenth Supplemental Indenture, except as otherwise expressly provided or unless the context otherwise requires:

(a) the capitalized terms not otherwise defined herein shall have the meanings set forth in the Base Indenture;

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(b) the terms defined in this Article have the meanings assigned to them in this Article and include the plural as well as the singular;

(c) all other terms used herein which are defined in the Trust Indenture Act of 1939, as amended, whether directly or by reference therein, have the meanings assigned to them therein;

(d) all accounting terms not otherwise defined herein have the meanings assigned to them in accordance with generally accepted accounting principles in the United States of America, and, except as otherwise herein expressly provided, the term “generally accepted accounting principles” with respect to any computation required or permitted hereunder shall mean such accounting principles as are generally accepted in the United States of America at the date of such computation; provided, that when two or more principles are so generally accepted, it shall mean that set of principles consistent with those in use by the Company;

(e) a reference to a Section or Article is to a Section or Article of this Eighteenth Supplemental Indenture unless otherwise stated;

(f) the words “herein,” “hereof” and “hereunder” and other words of similar import refer to this Eighteenth Supplemental Indenture as a whole and not to any particular Article, Section or other subdivision; and

(g) headings are for convenience of reference only and do not affect interpretation.

“Additional Interest” has the meaning specified in Section 2.5(a).

“Business Day” means a day other than (i) a Saturday or a Sunday, (ii) a day on which banks in New York, New York are authorized or obligated by law or executive order to remain closed or (iii) a day on which the Corporate Trust Office of the Series Trustee is closed for business.

“Calculation Agent” has the meaning set forth in Section 2.5(a).

“Corporate Trust Office of the Series Trustee” means the office of the Series Trustee at which at any particular time its corporate trust business with respect to the series of Securities herein described shall be principally administered, which office at the date of original execution of this Eighteenth Supplemental Indenture is located at 1 Columbus Circle, 17^th Floor, Mail Stop: NYC01-1710, New York, New York 10019, Attention: Corporates Team – Dominion Energy.

“Definitive Note Certificates” means Junior Subordinated Notes issued in definitive, fully registered form.

“First Reset Date” means May 15, 2035.

“Five-year U.S. Treasury Rate” means, as of any Reset Interest Determination Date, (i) an interest rate (expressed as a decimal) determined to be the per annum rate equal to the arithmetic mean of the yields to maturity for U.S. Treasury securities adjusted to constant maturity with a maturity of five years from the next Reset Date and trading in the public securities markets, for the five consecutive business days immediately prior to the respective Reset Interest Determination Date as published in the Most Recent H.15, or (ii) if there is no such published U.S. Treasury security with a maturity of five years from the next Reset Date and trading in the public securities markets, then the rate will be determined by interpolation between

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the arithmetic mean of the yields to maturity for each of the two series of U.S. Treasury securities adjusted to constant maturity trading in the public securities markets, (A) one maturing as close as possible to, but earlier than, the Reset Date following the next succeeding Reset Interest Determination Date, and (B) the other maturing as close as possible to, but later than, the Reset Date following the next succeeding Reset Interest Determination Date, in each case for the five consecutive business days immediately prior to the respective Reset Interest Determination Date as published under the heading “Treasury Constant Maturities” in the Most Recent H.15. If the Five-year U.S. Treasury Rate cannot be determined pursuant to the methods described in clause (i) or (ii) above, then the Five-year U.S. Treasury Rate will be the same rate determined for the prior Reset Interest Determination Date or, if the Five-year U.S. Treasury Rate cannot be so determined as of the Reset Interest Determination Date preceding the First Reset Date, then the interest rate applicable for the Reset Period beginning on and including the First Reset Date will be deemed to be 6.625% per year.

“Global Note” has the meaning specified in Section 2.4(a).

“H.15” means the statistical release designated as such, or any successor publication, published by the Board of Governors of the U.S. Federal Reserve System (or any successor thereto).

“Interest Payment Dates” means May 15 and November 15 of each year, commencing on May 15, 2025.

“Junior Subordinated Notes” has the meaning specified in Section 2.1.

“Most Recent H.15” means the H.15 published closest in time but prior to the close of business on the second business day prior to the applicable Reset Date.

“Optional Deferral Period” has the meaning specified in Section 4.1.

“Original Issue Date” means November 18, 2024.

“Rating Agency Event” means as of any date, a change, clarification or amendment in the methodology published by any nationally recognized statistical rating organization within the meaning of Section 3(a)(62) of the Securities Exchange Act of 1934, as amended (or any successor provision thereto), that then publishes a rating for the Company (together with any successor thereto, a “Rating Agency”) in assigning equity credit to securities such as the Junior Subordinated Notes, (a) as such methodology was in effect on November 14, 2024, in the case of any rating agency that published a rating for the Company as of November 14, 2024, or (b) as such methodology was in effect on the date such Rating Agency first published a rating for the Company, in the case of any Rating Agency that first publishes a rating for the Company after November 14, 2024 (in the case of either clause (a) or (b), the “current methodology”), that results in (i) any shortening of the length of time for which a particular level of equity credit pertaining to the Junior Subordinated Notes by such Rating Agency would have been in effect had the current methodology not been changed or (ii) a lower equity credit (including up to a lesser amount) being assigned by such Rating Agency to the Junior Subordinated Notes as of the date of such change, clarification or amendment than the equity credit that would have been assigned to the Junior Subordinated Notes by such rating agency had the current methodology not been changed.

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“Record Date” has the meaning specified in Section 2.5(a).

“Reset Date” means the First Reset Date and May 15 of every fifth year after 2035.

“Reset Interest Determination Date” means, in respect of any Reset Period, the day falling two business days prior to the first day of such Reset Period.

“Reset Period” means the period from and including the First Reset Date to, but excluding, the next following Reset Date, and thereafter each period from and including a Reset Date to, but excluding, the next following Reset Date.

“Stated Maturity” has the meaning specified in Section 2.2.

“Tax Event” means the receipt by the Company of an opinion of counsel experienced in such tax matters to the effect that, as a result of (a) any amendment to, clarification of, or change (including any announced prospective change) in the laws or treaties of the United States or any political subdivisions or taxing authorities, or any regulations under such laws or treaties, (b) any judicial decision or any official administrative pronouncement, ruling, regulatory procedure, notice or announcement (including any notice or announcement of intent to issue or adopt any such administrative pronouncement, ruling, regulatory procedure or regulation), (c) any amendment to, clarification of, or change in the official position or the interpretation of any administrative action or judicial decision or any interpretation or pronouncement that provides for a position with respect to an administrative action or judicial decision that differs from the theretofore generally accepted position, in each case by any legislative body, court, governmental authority or regulatory body, irrespective of the time or manner in which such amendment, clarification or change is introduced or made known, or (d) threatened challenge asserted in writing in connection with an audit of the Company or any of its subsidiaries, or a publicly-known threatened challenge asserted in writing against any other taxpayer that has raised capital through the issuance of securities that are substantially similar to the Junior Subordinated Notes, which amendment, clarification, or change is effective, or which administrative action is taken or which judicial decision, interpretation or pronouncement is issued or threatened challenge is asserted or becomes publicly-known, in each case after November 14, 2024, there is more than an insubstantial risk that interest payable by the Company on the Junior Subordinated Notes is not deductible, or within 90 days would not be deductible, in whole or in part, by the Company for United States Federal income tax purposes.

ARTICLE II

GENERAL TERMS AND CONDITIONS OF THE JUNIOR SUBORDINATED NOTES

2.1 Designation and Principal Amount. There is hereby established a new series of Securities to be issued under the Indenture, to be designated as the Company’s “2024 Series C Enhanced Junior Subordinated Notes due 2055” (the “Junior Subordinated Notes”), in the initial aggregate principal amount of up to $1,250,000,000, which amount shall be set forth in any written orders of the Company for the authentication and delivery of Junior Subordinated Notes pursuant to Section 2.1 of the Base Indenture and Section 6.1 hereof. Additional Junior Subordinated Notes, without limitation as to amount and without the consent of the holders of the then outstanding Junior Subordinated Notes, may also be authenticated and delivered in the manner provided in Section 2.1 of the Base Indenture. Any such additional Junior Subordinated Notes will have the same Stated Maturity and other terms (except, if applicable, the initial Interest Payment Date and initial interest accrual date) as those initially issued and shall be consolidated with and part of the same series of Junior Subordinated Notes as the Junior Subordinated Notes initially issued under this Eighteenth Supplemental Indenture.

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2.2 Stated Maturity. The “Stated Maturity” of the Junior Subordinated Notes is May 15, 2055, which may not be shortened or extended.

2.3 Form and Payment; Minimum Transfer Restriction.

(a) The Junior Subordinated Notes shall be issued in fully registered global form without coupons in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof. Principal and interest on the Junior Subordinated Notes will be payable, the transfer of such Junior Subordinated Notes will be registrable and such Junior Subordinated Notes will be exchangeable for Junior Subordinated Notes bearing identical terms and provisions at the Corporate Trust Office of the Series Trustee; provided, however, that payment of interest may be made at the option of the Company by check mailed to the Person entitled thereto at such address as shall appear in the Register or by transfer to an account maintained by the Person entitled thereto as specified in the Register, provided that proper transfer instructions have been received by the Paying Agent in writing at least five Business Days prior to the Record Date. The Register for the Junior Subordinated Notes shall be kept at the Corporate Trust Office of the Series Trustee, and the Series Trustee is hereby appointed registrar and Paying Agent for the Junior Subordinated Notes.

(b) The Junior Subordinated Notes may be transferred or exchanged only in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof, and any attempted transfer, sale or other disposition of Junior Subordinated Notes in a denomination of less than $2,000 shall be deemed to be void and of no legal effect whatsoever. Any such transferee shall be deemed not to be the holder of such Junior Subordinated Notes for any purpose, including but not limited to the receipt of payments in respect of such Junior Subordinated Notes and such transferee shall be deemed to have no interest whatsoever in such Junior Subordinated Notes.

2.4 Exchange and Registration of Transfer of Junior Subordinated Notes; Restrictions on Transfers; Depositary. The Junior Subordinated Notes will be issued to the holders in accordance with the following procedures:

(a) So long as Junior Subordinated Notes are eligible for book-entry settlement with the Depositary, or unless required by law, all Junior Subordinated Notes that are so eligible will be represented by one or more Junior Subordinated Notes in global form (a “Global Note”) registered in the name of the Depositary or the nominee of the Depositary. Except as provided in Section 2.4(c) below, beneficial owners of a Global Note shall not be entitled to have Definitive Note Certificates registered in their names, will not receive or be entitled to receive physical delivery of Definitive Note Certificates and will not be registered holders of such Global Notes.

(b) The transfer and exchange of beneficial interests in Global Notes shall be effected through the Depositary in accordance with the Indenture and the procedures and standing instructions of the Depositary and the Series Trustee shall make appropriate endorsements to reflect increases or decreases in principal amounts of such Global Notes.

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(c) Notwithstanding any other provisions of the Indenture (other than the provisions set forth in this Section 2.4(c)), a Global Note may not be exchanged in whole or in part for Junior Subordinated Notes in definitive form, and no transfer of a Global Note may be registered, in the name of any person other than the Depositary or a nominee thereof unless (i) such Depositary (A) has notified the Company that it is unwilling or unable to continue as Depositary for such Global Note or (B) has ceased to be a clearing agency registered as such under the Exchange Act at a time when the Depositary is required to be so registered to act as such Depositary, and no successor Depositary has been appointed by the Company within 90 days after its receipt of such notice or its becoming aware of such ineligibility, or (ii) the Company, in its sole discretion and subject to the procedures of the Depositary, instructs the Series Trustee in writing to exchange such Global Note for a Junior Subordinated Note that is not a Global Note (in which case such exchange (subject to such procedures) shall be effected by the Series Trustee).

The Depositary shall be a clearing agency registered under the Exchange Act. The Company initially appoints The Depository Trust Company to act as Depositary with respect to the Global Notes. Initially, the Global Notes shall be registered in the name of Cede & Co., as the nominee of the Depositary, and deposited with the Series Trustee as custodian for the Depositary.

Definitive Note Certificates issued in exchange for all or a part of a Global Note pursuant to this Section 2.4(c) shall be registered in such names and in such authorized denominations as the Depositary, pursuant to instructions from its direct or indirect participants or otherwise, shall instruct the Series Trustee. Upon execution and authentication, the Series Trustee shall deliver such Definitive Note Certificates to the person in whose names such Definitive Note Certificates are so registered.

So long as Junior Subordinated Notes are represented by one or more Global Notes, (i) the registrar for the Junior Subordinated Notes and the Series Trustee shall be entitled to deal with the Depositary for all purposes of the Indenture relating to such Global Notes as the sole holder of the Junior Subordinated Notes evidenced by such Global Notes and shall have no obligations to the holders of beneficial interests in such Global Notes; and (ii) the rights of the holders of beneficial interests in such Global Notes shall be exercised only through the Depositary and shall be limited to those established by law and agreements between such holders and the Depositary and/or the participants in the Depositary.

At such time as all interests in a Global Note have been paid, redeemed, exchanged, repurchased or canceled, such Global Note shall be, upon receipt thereof, canceled by the Series Trustee in accordance with standing procedures and instructions of the Depositary. At any time prior to such cancellation, if any interest in a Global Note is exchanged for Definitive Note Certificates, redeemed by the Company pursuant to Article III or canceled, or transferred for part of a Global Note, the principal amount of such Global Note shall, in accordance with the standing procedures and instructions of the Depositary be reduced or increased, as the case may be, and an endorsement shall be made on such Global Note by, or at the direction of, the Series Trustee to reflect such reduction or increase.

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2.5 Interest.

(a) Each Junior Subordinated Note will bear interest (i) from and including the Original Issue Date to, but excluding the First Reset Date at the rate of 6.625% per year and (ii) from and including the First Reset Date, during each Reset Period, at a rate per year equal to the Five-year U.S. Treasury Rate as of the most recent Reset Interest Determination Date plus a spread of 2.207%, to be reset on each Reset Date. Subject to the Company’s right to defer interest payments described in Article IV below, interest on the Junior Subordinated Notes is payable semi-annually in arrears on each Interest Payment Date until the principal thereof is paid or made available for payment. If interest payments are deferred or otherwise not paid, they will accrue and compound semi-annually until paid at an annual rate equal to the interest rate then applicable to the Junior Subordinated Notes, to the extent permitted by applicable law (“Additional Interest”). The amount of interest payable for any period will be computed on the basis of a 360-day year of twelve 30-day months. The interest so payable will be paid to the Person in whose name such Junior Subordinated Note is registered, at the close of business on the Record Date next preceding such Interest Payment Date; provided that interest payable at Maturity will be paid to the Person to whom principal is payable. Any such interest that is not so punctually paid or duly provided for, and that is not deferred pursuant to Article IV hereof, will forthwith cease to be payable to the Holders on such Record Date and shall be paid to the Person in whose name such Junior Subordinated Note (or any Junior Subordinated Note issued upon registration of transfer or exchange thereof) is registered at the close of business on the record date for the payment of such defaulted interest established in accordance with Section 2.3 of the Base Indenture. The “Record Date” for payment of interest will be the close of business on the Business Day next preceding the applicable Interest Payment Date, unless such Junior Subordinated Note is registered to a holder other than the Depositary or a nominee of the Depositary, in which case the Record Date for payment of interest will be the close of business on the fifteenth calendar day preceding the applicable Interest Payment Date, whether or not a Business Day. The interest rate for each Reset Period will be determined by an agent appointed by the Company for such purpose (such agent, the “Calculation Agent”), which agent may be the Company or an affiliate of the Company.

(b) If an Interest Payment Date, redemption date or the Stated Maturity of the Junior Subordinated Notes falls on a day that is not a Business Day, the payment of interest and principal will be made on the next succeeding Business Day, and no interest on such payment will accrue for the period from and after the Interest Payment Date, redemption date or the Stated Maturity, as applicable.

2.6 Events of Default. An Event of Default as defined in the Base Indenture shall be an Event of Default with respect to the Junior Subordinated Notes provided that the nonpayment of interest for so long as and to the extent that interest is permitted to be deferred pursuant to Article IV herein shall not be deemed to be a default in the payment of interest for the purposes of Article VI of the Base Indenture and shall not otherwise be deemed an Event of Default with respect to the Junior Subordinated Notes. For the avoidance of doubt, and without prejudice to any other remedies that may be available to the Series Trustee or the holders of the Junior Subordinated Notes, no breach by the Company of any covenant or obligation under the Indenture or the terms of the Junior Subordinated Notes shall be an Event of Default except those that are specifically identified as an Event of Default under the Base Indenture.

2.7 No Sinking Fund. The Junior Subordinated Notes shall not be subject to any sinking fund.

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ARTICLE III

REDEMPTION OF THE JUNIOR SUBORDINATED NOTES

3.1 Optional Redemption by Company. The Company shall have the option to redeem the Junior Subordinated Notes:

(a) in whole or in part on one or more occasions at a redemption price equal to 100% of the principal amount being redeemed, plus accrued and unpaid interest to, but excluding, the redemption date (i) on any day in the period commencing on the date falling 90 days prior to the First Reset Date and ending on and including the First Reset Date and (ii) after the First Reset Date, on any Interest Payment Date;

(b) in whole, but not in part, at a redemption price equal to 100% of the principal amount being redeemed, plus accrued and unpaid interest to, but excluding, the redemption date, at any time within 120 days after the occurrence of a Tax Event; and

(c) in whole, but not in part, at a redemption price equal to 102% of the principal amount being redeemed, plus accrued and unpaid interest to, but excluding, the redemption date, at any time within 120 days after the occurrence of a Rating Agency Event.

The applicable redemption price shall be paid prior to 2:30 p.m., New York City time, on the date of such redemption, provided that the Company shall deposit with the Series Trustee an amount sufficient to pay the applicable redemption price by 10:00 a.m., New York City time, on the date such redemption price is to be paid. The Company will, in an Officers’ Certificate, notify the Series Trustee of the amount of any applicable redemption price promptly after the calculation thereof, and the Series Trustee will not be responsible for such calculation.

3.2 Notice of Redemption. Subject to Article III of the Base Indenture, notice of any redemption pursuant to this Article III will be mailed not less than 20 days nor more than 60 days prior to the redemption date to each holder of Junior Subordinated Notes to be redeemed at such holder’s registered address. Unless the Company defaults in payment of the applicable redemption price, on and after the redemption date interest shall cease to accrue on such Junior Subordinated Notes called for redemption.

ARTICLE IV

OPTION TO DEFER INTEREST PAYMENTS

4.1 Option to Defer Interest Payments. So long as there is no Event of Default with respect to the Junior Subordinated Notes under the Indenture, the Company, at its option, may, on one or more occasions, defer payment of all or part of the current and accrued interest otherwise due on the Junior Subordinated Notes for a period of up to 10 consecutive years (each period, commencing on the date that the first such interest payment would otherwise have been made, an “Optional Deferral Period”). A deferral of interest payments may not end on a date other than an Interest Payment Date and may not extend beyond the Stated Maturity of the Junior Subordinated Notes, and the Company may not begin a new Optional Deferral Period and may not pay current interest on the Junior Subordinated Notes until it has paid all accrued interest on the Junior Subordinated Notes from the previous Optional Deferral Period. Such accrued interest shall be payable to the persons in whose names the Junior Subordinated Notes are registered at the close of business on the Record Date next preceding such Interest Payment Date.

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Any deferred interest on the Junior Subordinated Notes will accrue Additional Interest as provided for in Section 2.5(a) above. Once the Company pays all deferred interest payments on the Junior Subordinated Notes, including any Additional Interest accrued on the deferred interest, it shall be entitled to again defer interest payments on the Junior Subordinated Notes as described above, but not beyond the Stated Maturity of the Junior Subordinated Notes.

Unless the Company has paid all accrued and payable interest on the Junior Subordinated Notes and is not deferring any interest payments on the Junior Subordinated Notes at such time, it will not and its Subsidiaries shall not do any of the following:

However, the foregoing provisions shall not prevent or restrict the Company from making:

(a) purchases, redemptions or other acquisitions of its capital stock in connection with any employment contract, benefit plan or other similar arrangement with or for the benefit of employees, officers, directors, agents or consultants or a stock purchase or dividend reinvestment plan, or the satisfaction of its obligations pursuant to any contract or security outstanding on the date that the payment of interest is deferred requiring it to purchase, redeem or acquire its capital stock;

(b) any payment, repayment, redemption, purchase, acquisition or declaration of dividend described in clause (i) above as a result of a reclassification of its capital stock, or the exchange or conversion of all or a portion of one class or series of its capital stock for another class or series of its capital stock;

(c) the purchase of fractional interests in shares of its capital stock pursuant to the conversion or exchange provisions of its capital stock or the security being converted or exchanged, or in connection with the settlement of stock purchase contracts outstanding on the date that the payment of interest is deferred or with any split, reclassification or similar transaction;

(d) dividends or distributions paid or made in its capital stock (or rights to acquire its capital stock), or repurchases, redemptions or acquisitions of capital stock in connection with the issuance or exchange of capital stock (or of securities convertible into or exchangeable for shares of its capital stock) and distributions in connection with the settlement of stock purchase contracts outstanding on the date that the payment of interest is deferred;

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(e) redemptions, exchanges or repurchases of, or with respect to, any rights outstanding under a shareholder rights plan outstanding on the date that the payment of interest is deferred or the declaration or payment thereunder of a dividend or distribution of or with respect to rights in the future;

(f) payments on the Junior Subordinated Notes, any trust preferred securities, subordinated debentures, junior subordinated debentures or junior subordinated notes, or any guarantees of any of the foregoing, in each case that rank equal in right of payment to the Junior Subordinated Notes, so long as the amount of payments made on account of such securities or guarantees is paid on all such securities and guarantees then outstanding on a pro rata basis in proportion to the full payment to which each series of such securities and guarantees is then entitled if paid in full;

(g) any payment of deferred interest or principal on, or repayment, redemption or repurchase of, parity securities that, if not made, would cause the Company to breach the terms of the instrument governing such parity securities; or

(h) any regularly scheduled dividend or distribution payments declared prior to the date that the applicable Optional Deferral Period commences.

4.2 Notice of Deferral. The Company shall give the Series Trustee written notice of its election to begin an Optional Deferral Period at least one Business Day before the Record Date for the next Interest Payment Date, which notice shall contain an instruction for the Series Trustee to forward such notice to the holders of the Junior Subordinated Notes. However, the Company’s failure to pay interest on any Interest Payment Date will itself constitute the commencement of an Optional Deferral Period unless the Company pays such interest payment within five Business Days after the Interest Payment Date, whether or not the Company provides a notice of deferral.

ARTICLE V

FORM OF JUNIOR SUBORDINATED NOTE

5.1 Form of Junior Subordinated Note. The Junior Subordinated Notes and the Series Trustee’s Certificate of Authentication to be endorsed thereon are to be substantially in the form attached hereto as Exhibit A.

ARTICLE VI

ORIGINAL ISSUE OF JUNIOR SUBORDINATED NOTES

6.1 Original Issue of Junior Subordinated Notes. Junior Subordinated Notes in the initial aggregate principal amount of up to $1,250,000,000 may be executed by an Officer of the Company and delivered to the Series Trustee for authentication by it, and the Series Trustee shall thereupon authenticate and deliver said Junior Subordinated Notes to or upon the written order of the Company in accordance with the terms of the Base Indenture. For the avoidance of doubt, no corporate seal or attestation shall be required for the Company’s due execution of the Junior Subordinated Notes.

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ARTICLE VII

THE SERIES TRUSTEE

7.1 Appointment of Series Trustee. Pursuant to the Base Indenture and pursuant to this Eighteenth Supplemental Indenture, the Company hereby appoints the Series Trustee as Trustee under the Base Indenture with respect to the Junior Subordinated Notes, and by execution hereof the Series Trustee accepts such appointment. Pursuant to the Base Indenture, all the rights, powers, trusts and duties of the Original Trustee under the Base Indenture shall be vested in the Series Trustee with respect to the Junior Subordinated Notes, there shall continue to be vested in the Original Trustee all of its rights, powers, trusts and duties as Trustee under the Base Indenture with respect to all of the series of Securities as to which it has served and continues to serve as Trustee, and the Original Trustee shall have no rights, powers, trusts and duties with respect to the Junior Subordinated Notes.

7.2 Eligibility of Series Trustee. The Series Trustee hereby represents that it is qualified and eligible under Section 7.9 of the Base Indenture and the provisions of the Trust Indenture Act to accept its appointment as Trustee with respect to the Junior Subordinated Notes under the Base Indenture and hereby accepts the appointment as such Trustee.

7.3 Security Registrar and Paying Agent. Pursuant to the Base Indenture, the Company hereby appoints Deutsche Bank Trust Company Americas as registrar and “Paying Agent” with respect to the Junior Subordinated Notes.

7.4 Concerning the Trustees. Neither the Original Trustee nor the Series Trustee assumes any duties, responsibilities or liabilities by reason of this Eighteenth Supplemental Indenture other than as set forth in the Base Indenture or (with respect to the Series Trustee) as expressly set forth herein and, in carrying out its responsibilities hereunder, each shall have all of the rights, powers, privileges, protections, duties and immunities which it possesses under the Base Indenture. The Original Trustee and the Series Trustee shall not constitute co-trustees of the same trust, and each of the Original Trustee and the Series Trustee shall be trustee of a trust or trusts under the Base Indenture separate and apart from any trust or trusts under the Base Indenture administered by the other trustee. The Original Trustee shall have no liability for any acts or omissions of the Series Trustee and the Series Trustee shall have no liability for any acts or omissions of the Original Trustee.

References in this Eighteenth Supplemental Indenture to sections of the Base Indenture that require or permit actions by the Original Trustee with respect to Securities of the series established hereby shall be deemed to require or permit actions only by the Series Trustee and the Original Trustee shall have no responsibility therefor.

7.5 Patriot Act Requirements of Series Trustee. In order to comply with the laws, rules, regulations and executive orders in effect from time to time applicable to banking institutions, including, without limitation, those relating to the funding of terrorist activities and money laundering, including Section 326 of the USA PATRIOT Act of the United States (“Applicable AML Law”), the Series Trustee is required to obtain, verify, record and update certain information relating to individuals and entities which maintain a business relationship with the Series Trustee. Accordingly, the Company agrees to provide to the Series Trustee, upon its request from time to time such identifying information and documentation as may be available for such party in order to enable the Series Trustee to comply with Applicable AML Law.

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7.6 Notice upon Series Trustee. Any notice, direction, request, demand, consent or waiver by the Company or any holder to or upon the Series Trustee, registrar or Paying Agent for the Junior Subordinated Notes shall be deemed to have been sufficiently given, made or filed, for all purposes, if given, made or filed in writing at the Corporate Trust Office of the Series Trustee.

ARTICLE VIII

MISCELLANEOUS

8.1 Modification of Indenture without Consent of Holders. In addition to subsections (a) through (i) of Section 10.1 of the Base Indenture, without the consent of any Holders of a Junior Subordinated Note, the Company and the Series Trustee may amend the Junior Subordinated Notes, the Base Indenture (in so far as it relates to the Junior Subordinated Notes) and this Eighteenth Supplemental Indenture to conform the provisions thereof or hereof to the descriptions thereof or hereof contained in the prospectus supplement dated November 14, 2024 for the Junior Subordinated Notes under the heading “Description of the Junior Subordinated Notes.”

8.2 Ratification of Indenture; Eighteenth Supplemental Indenture Controls. The Base Indenture, as supplemented and (solely for purposes of the Junior Subordinated Notes) amended by this Eighteenth Supplemental Indenture, is in all respects ratified and confirmed, and this Eighteenth Supplemental Indenture shall be deemed part of the Base Indenture in the manner and to the extent herein and therein provided. The provisions of this Eighteenth Supplemental Indenture shall supersede the provisions of the Base Indenture to the extent the Base Indenture is inconsistent herewith.

8.3 Recitals. The recitals herein contained are made by the Company only and not by the Original Trustee or the Series Trustee, and neither the Original Trustee nor the Series Trustee assumes any responsibility for the correctness thereof. Neither the Original Trustee nor the Series Trustee makes any representation as to the validity or sufficiency of this Eighteenth Supplemental Indenture or the terms or provisions hereof. All of the provisions contained in the Base Indenture in respect of the rights, powers, privileges, protections, duties and immunities of the Original Trustee, including, without limitation, its right to be indemnified, shall be applicable, but only to the Series Trustee in respect of the Junior Subordinated Notes and of this Eighteenth Supplemental Indenture (to the extent relating to the Junior Subordinated Notes) as fully and with like effect as if set forth herein in full. The Series Trustee shall not be responsible for the due execution hereof by the Company or the consequences of any amendment herein provided for, and the Series Trustee makes no representation as to such matters.

8.4 Governing Law. This Eighteenth Supplemental Indenture and each Junior Subordinated Note shall be deemed to be a contract made under the internal laws of the State of New York, and for all purposes shall be governed by and construed in accordance with the laws of said State, without regard to the conflicts of law principles thereof.

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8.5 Separability. In case any one or more of the provisions contained in this Eighteenth Supplemental Indenture or in the Junior Subordinated Notes shall for any reason be held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provisions of this Eighteenth Supplemental Indenture or of the Junior Subordinated Notes, but this Eighteenth Supplemental Indenture and the Junior Subordinated Notes shall be construed as if such invalid or illegal or unenforceable provision had never been contained herein or therein.

8.6 Counterparts. This Eighteenth Supplemental Indenture may be executed in any number of counterparts each of which shall be an original; but such counterparts shall together constitute but one and the same instrument. The exchange of copies of this Eighteenth Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Eighteenth Supplemental Indenture as to the parties hereto and may be used in lieu of the original Eighteenth Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes. Signatures of the parties to this Eighteenth Supplemental Indenture or any certificate or other document delivered pursuant to the Indenture (other than a Global Note or Definitive Note Certificate) may be in electronic form and any such electronic signature shall be deemed to be such signatory’s original signature for all purposes.

[Signature Page Follows]

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IN WITNESS WHEREOF, the parties hereto have caused this Eighteenth Supplemental Indenture to be duly executed as of the date first above written.

EXHIBIT A

FORM OF

2024 SERIES C ENHANCED JUNIOR SUBORDINATED NOTE DUE 2055

[THIS NOTE IS A GLOBAL NOTE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE OF A DEPOSITARY. THIS NOTE IS EXCHANGEABLE FOR JUNIOR SUBORDINATED NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS NOTE (OTHER THAN A TRANSFER OF THIS NOTE AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY) MAY BE REGISTERED EXCEPT IN SUCH LIMITED CIRCUMSTANCES.]*

[UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY NOTE ISSUED IS REGISTERED IN THE NAME OF [CEDE & CO.] OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT HEREON IS MADE TO [CEDE & CO.], ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, [CEDE & CO.], HAS AN INTEREST HEREIN.]*

THE NOTES EVIDENCED HEREBY WILL BE ISSUED, AND MAY BE TRANSFERRED, ONLY IN MINIMUM DENOMINATIONS OF $2,000 AND INTEGRAL MULTIPLES OF $1,000 IN EXCESS THEREOF. ANY ATTEMPTED TRANSFER, SALE OR OTHER DISPOSITION OF NOTES IN A DENOMINATION OF LESS THAN $2,000 SHALL BE DEEMED TO BE VOID AND OF NO LEGAL EFFECT WHATSOEVER. ANY SUCH TRANSFEREE SHALL BE DEEMED NOT TO BE THE HOLDER OF SUCH NOTES FOR ANY PURPOSE, INCLUDING BUT NOT LIMITED TO THE RECEIPT OF PAYMENTS IN RESPECT OF SUCH NOTES, AND SUCH TRANSFEREE SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN SUCH NOTES.

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DOMINION ENERGY, INC.

[Up to]* $[__]

2024 SERIES C ENHANCED JUNIOR SUBORDINATED NOTE DUE 2055

Dated: [_______] [__], 20[__]

Registered Holder: [_____________________]

DOMINION ENERGY, INC., a corporation duly organized and existing under the laws of the Commonwealth of Virginia (herein referred to as the “Company,” which term includes any successor corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to the Registered Holder named above, the principal sum [of [__] Dollars]** [specified in the Schedule of Increases or Decreases annexed hereto]* on May 15, 2055 (the “Stated Maturity”). The Company further promises to pay to the Registered Holder of this note (the “Note”) as hereinafter provided interest on said principal sum (subject to deferral as set forth herein) at the rate specified in the Eighteenth Supplemental Indenture (as defined herein) semi-annually in arrears on May 15 and November 15 of each year (each an “Interest Payment Date”), commencing May 15, 2025, from the Interest Payment Date next preceding the date hereof to which interest has been paid or duly provided for (unless (i) no interest has yet been paid or duly provided for on this Note, in which case from November 18, 2024, or (ii) the date hereof is before an Interest Payment Date but after the related Record Date (as defined below), in which case from such following Interest Payment Date; provided, however, that if the Company shall default in payment of the interest due on such following Interest Payment Date, then from the next preceding Interest Payment Date to which interest has been paid or duly provided for or if no interest has yet been paid or duly provided for on this Note, in which case from November [__], 2024), until the principal hereof is paid or duly provided for, plus (b) Additional Interest, as defined in the Eighteenth Supplemental Indenture, to the extent permitted by applicable law, on any interest payment that is not made on the applicable Interest Payment Date, which shall accrue at the rate per annum borne by this Note, compounded semi-annually.

The interest so payable will, subject to certain exceptions provided in the Indenture hereinafter referred to, be paid to the person in whose name this Note is registered at the close of business on the Record Date next preceding such Interest Payment Date. The Record Date shall be the close of business on the Business Day next preceding the Interest Payment Date, unless this Note is registered to a holder other than The Depository Trust Company or a nominee of The Depository Trust Company, in which case the Record Date will be the close of business on the fifteenth calendar day preceding such Interest Payment Date whether or not a Business Day.

The amount of interest payable for any period will be computed on the basis of a 360-day year of twelve 30-day months.

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If an Interest Payment Date, redemption date or the Stated Maturity of the Junior Subordinated Notes falls on a day that is not a Business Day, the payment of interest and principal will be made on the next succeeding Business Day, and no interest on such payment will accrue for the period from and after the Interest Payment Date, redemption date or the Stated Maturity, as applicable.

At the Company’s option, so long as there is no Event of Default with respect to the Junior Subordinated Notes under the Indenture, it may, on one or more occasions, defer payment of all or part of the current and accrued interest otherwise due on the Junior Subordinated Notes for a period of up to 10 consecutive years (each period, commencing on the date that the first such interest payment would otherwise have been made, an “Optional Deferral Period”). A deferral of interest payments may not extend beyond the Stated Maturity of the Junior Subordinated Notes, and the Company may not begin a new Optional Deferral Period and may not pay current interest on the Junior Subordinated Notes until it has paid all accrued interest on the Junior Subordinated Notes from the previous Optional Deferral Period.

Any deferred interest on the Junior Subordinated Notes will accrue Additional Interest as provided for in the Eighteenth Supplemental Indenture. Once the Company pays all deferred interest payments on the Junior Subordinated Notes, including any Additional Interest accrued on the deferred interest, it shall be entitled to again defer interest payments on the Junior Subordinated Notes as described above, but not beyond the Stated Maturity of the Junior Subordinated Notes.

Unless the Company has paid all accrued and payable interest on the Junior Subordinated Notes and is not deferring any interest payments on the Junior Subordinated Notes at such time, it will not and its Subsidiaries shall not do any of the following:

However, the foregoing provisions shall not prevent or restrict the Company from making:

(a) purchases, redemptions or other acquisitions of its capital stock in connection with any employment contract, benefit plan or other similar arrangement with or for the benefit of employees, officers, directors, agents or consultants or a stock purchase or dividend reinvestment plan, or the satisfaction of its obligations pursuant to any contract or security outstanding on the date that the payment of interest is deferred requiring it to purchase, redeem or acquire its capital stock;

A-3

(b) any payment, repayment, redemption, purchase, acquisition or declaration of dividend described in clause (i) above as a result of a reclassification of its capital stock, or the exchange or conversion of all or a portion of one class or series of its capital stock for another class or series of its capital stock;

(c) the purchase of fractional interests in shares of its capital stock pursuant to the conversion or exchange provisions of its capital stock or the security being converted or exchanged, or in connection with the settlement of stock purchase contracts outstanding on the date that the payment of interest is deferred or with any split, reclassification or similar transaction;

(d) dividends or distributions paid or made in its capital stock (or rights to acquire its capital stock), or repurchases, redemptions or acquisitions of capital stock in connection with the issuance or exchange of capital stock (or of securities convertible into or exchangeable for shares of its capital stock) and distributions in connection with the settlement of stock purchase contracts outstanding on the date that the payment of interest is deferred;

(e) redemptions, exchanges or repurchases of, or with respect to, any rights outstanding under a shareholder rights plan outstanding on the date that the payment of interest is deferred or the declaration or payment thereunder of a dividend or distribution of or with respect to rights in the future;

(f) payments on the Junior Subordinated Notes, any trust preferred securities, subordinated debentures, junior subordinated debentures or junior subordinated notes, or any guarantees of any of the foregoing, in each case that rank equal in right of payment to the Junior Subordinated Notes, so long as the amount of payments made on account of such securities or guarantees is paid on all such securities and guarantees then outstanding on a pro rata basis in proportion to the full payment to which each series of such securities and guarantees is then entitled if paid in full;

(g) any payment of deferred interest or principal on, or repayment, redemption or repurchase of, parity securities that, if not made, would cause the Company to breach the terms of the instrument governing such parity securities; or

(h) any regularly scheduled dividend or distribution payments declared prior to the date that the applicable Optional Deferral Period commences.

The Company shall give the Series Trustee written notice of its election to begin an Optional Deferral Period at least one Business Day before the Record Date for the next Interest Payment Date, which notice shall contain an instruction for the Series Trustee to forward such notice to the holders of the Junior Subordinated Notes. However, the Company’s failure to pay interest on any Interest Payment Date will itself constitute the commencement of an Optional Deferral Period unless the Company pays such interest payment within five Business Days after the Interest Payment Date, whether or not the Company provides a notice of deferral.

This Note may be presented for payment of principal and interest at the principal corporate trust office of the Paying Agent; provided, however, that payment of interest may be made at the option of the Company (i) by check mailed to such address of the person entitled thereto as the address shall appear on the Register or (ii) by transfer to an account maintained by the Person entitled thereto as specified in the Register, provided that proper transfer instructions have been received by the Record Date.

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The Notes of this series shall have an initial aggregate principal amount of up to $1,250,000,000.

The Notes evidenced by this Certificate may be transferred or exchanged only in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof, and any attempted transfer, sale or other disposition of Notes in a denomination of less than $2,000 shall be deemed to be void and of no legal effect whatsoever.

The indebtedness of the Company evidenced by this Note, including the principal hereof and interest hereon, is, to the extent and in the manner set forth in the Indenture, subordinate and junior in right of payment to the Company’s obligations to holders of Priority Indebtedness of the Company and each holder of this Note, by acceptance hereof, agrees to and shall be bound by such provisions of the Indenture and all other provisions of the Indenture.

This Note shall not be entitled to any benefit under the Indenture, or be valid or become obligatory for any purpose, until the certificate of authentication hereon shall have been signed by or on behalf of the Series Trustee under the Indenture.

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IN WITNESS WHEREOF, DOMINION ENERGY, INC. has caused this instrument to be duly executed.

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Securities, of the series designated herein, referred to in the within-mentioned Indenture.

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REVERSE OF NOTE

This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series pursuant to the Junior Subordinated Indenture II, dated as of June 1, 2006, as heretofore supplemented and amended, between the Company and The Bank of New York Mellon (successor to JPMorgan Chase Bank, N.A.) (herein called the “Original Trustee”), as supplemented and amended by the Third Supplemental and Amending Indenture dated as of June 1, 2009 (as so amended, the “Base Indenture”), by and among the Company, the Original Trustee and Deutsche Bank Trust Company Americas, as Series Trustee, as further supplemented and amended by a Eighteenth Supplemental Indenture dated as of November 1, 2024 by and between the Company and Deutsche Bank Trust Company Americas, as Trustee of the series of Securities established thereby (herein called the “Series Trustee,” which term includes any successor series trustee for the Junior Subordinated Notes under the Indenture) (the “Eighteenth Supplemental Indenture” and together with the Base Indenture, as it may be hereafter supplemented or amended from time to time, the “Indenture”). Reference is hereby made to the Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Original Trustee, the Series Trustee and the Holders (the word “Holder” or “Holders” meaning the registered holder or registered holders) of the Notes. This Security is one of the series designated on the face hereof (the “Junior Subordinated Notes”) which is unlimited in aggregate principal amount.

Capitalized terms used herein but not defined herein shall have the respective meanings assigned thereto in the Indenture.

As provided in and subject to the provisions in the Indenture, the Company shall have the option to redeem the Junior Subordinated Notes:

(a) in whole or in part on one or more occasions at a redemption price equal to 100% of the principal amount being redeemed, plus accrued and unpaid interest to, but excluding, the redemption date (i) on any day in the period commencing on the date falling 90 days prior to the First Reset Date and ending on and including the First Reset Date and (ii) after the First Reset Date, on any interest payment date;

(b) in whole, but not in part, at a redemption price equal to 100% of the principal amount being redeemed, plus accrued and unpaid interest to, but excluding, the redemption date, at any time within 120 days after the occurrence of a Tax Event; and

(c) in whole, but not in part, at a redemption price equal to 102% of the principal amount being redeemed, plus accrued and unpaid interest to, but excluding, the redemption date, at any time within 120 days after a Rating Agency Event.

In the case an Event of Default, as defined in the Indenture, shall have occurred and be continuing, the principal of all of the Junior Subordinated Notes may be declared, and upon such declaration shall become, due and payable, in the manner, with the effect and subject to the conditions provided in the Indenture.

A-7

Any consent or waiver by the Holder of this Note given as provided in the Indenture (unless effectively revoked as provided in the Indenture) shall be conclusive and binding upon such Holder and upon all future Holders of this Note and of any Junior Subordinated Notes issued in exchange, registration of transfer, or otherwise in lieu hereof irrespective of whether any notation of such consent or waiver is made upon this Note or such other Junior Subordinated Notes. No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and interest on this Note, at the places, at the respective times, at the rates and in the coin or currency herein prescribed.

As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Note may be registered on the Register of the Junior Subordinated Notes upon surrender of this Note for registration of transfer at the offices maintained by the Company or its agent for such purpose, duly endorsed by the Holder hereof or his attorney duly authorized in writing, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Securities registrar duly executed by the Holder hereof or his attorney duly authorized in writing, but without payment of any charge other than a sum sufficient to reimburse the Company for any tax or other governmental charge incident thereto. Upon any such registration of transfer, a new Junior Subordinated Note or Notes of authorized denomination or denominations for the same aggregate principal amount will be issued to the transferee in exchange herefor.

Prior to due presentment for registration of transfer of this Note, the Company, the Trustee, and any agent of the Company or the Trustee may deem and treat the person in whose name this Note shall be registered upon the Register of the Notes of this series as the absolute owner of this Note (whether or not this Note shall be overdue and notwithstanding any notation of ownership or other writing hereon) for the purpose of receiving payment of or on account of the principal hereof and, subject to the provisions on the face hereof, interest due hereon and for all other purposes; and neither the Company nor the Trustee nor any such agent shall be affected by any notice to the contrary.

No recourse shall be had for the payment of the principal of or interest on this Note, or for any claim based hereon or otherwise in respect hereof, or based on or in respect of the Indenture, against any shareholder, officer, director or employee, as such, past, present or future, of the Company or of any successor corporation, either directly or through the Company, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as a part of the consideration for the issue hereof, expressly waived and released.

By acceptance of this Note or a beneficial interest in this Note, each Holder hereof and any Person acquiring a beneficial interest herein, for United States federal, state and local tax purposes, agrees to treat this Note as indebtedness and to take other positions for such tax purposes as set forth in the Eighteenth Supplemental Indenture.

This Note shall be deemed to be a contract made under the laws of the State of New York (without regard to conflicts of laws principles thereof) and for all purposes shall be governed by, and construed in accordance with, the laws of said State.

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ASSIGNMENT

FOR VALUE RECEIVED, the undersigned hereby sell(s) and transfer(s) unto

                                                             .

(please insert Social Security or other identifying number of assignee)

                                                             .

                                                             .

                                                             .

PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE OF ASSIGNEE

the within Note and all rights thereunder, hereby irrevocably constituting and appointing

                                                             .

                                                             .

                                                             .

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agent to transfer said Note on the books of the Company, with full power of substitution in the premises.

Dated: __________________ __, ____

______________________________________

NOTICE: The signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular without alteration or enlargement, or any change whatever.

A-9

SCHEDULE OF INCREASES OR DECREASES

The initial principal amount of this Note is: $

Changes to Principal Amount of Global Note

A-10

Exhibit 5.1

November 18, 2024

Dominion Energy, Inc.

120 Tredegar Street

Richmond, Virginia 23219

Ladies and Gentlemen:

We have acted as special counsel to Dominion Energy, Inc., a Virginia corporation (the “Company”), in connection with (i) the Registration Statement on Form S-3 (File No. 333-269879) (the “Registration Statement”), which was filed by the Company with the Securities and Exchange Commission (the “SEC”) in connection with the registration under the Securities Act of 1933, as amended (the “Act”), of certain securities of the Company, including Junior Subordinated Notes, and (ii) the issuance by the Company of up to $1,250,000,000 aggregate principal amount of the Company’s 2024 Series C Enhanced Junior Subordinated Notes due 2055 (the “Notes”), as described in the Company’s Prospectus, dated February 21, 2023 (the “Prospectus”) and Prospectus Supplement, dated November 14, 2024 (the “Prospectus Supplement”). The Registration Statement became effective on February 21, 2023. This opinion letter is being furnished in accordance with the requirements of Item 16 of Form S-3 and Item 601(b)(5)(i) of Regulation S-K promulgated under the Act.

The Notes, which are Junior Subordinated Notes for purposes of the Registration Statement, are being issued under that certain Junior Subordinated Indenture II dated as of June 1, 2006 (the “Original Indenture”), between the Company and The Bank of New York Mellon (as successor to JPMorgan Chase Bank, N.A.), as trustee (the “Original Trustee”), as supplemented and amended by the Third Supplemental and Amending Indenture dated as of June 1, 2009 (the “Third Supplemental and Amending Indenture”) among the Company, the Original Trustee and Deutsche Bank Trust Company Americas, as series trustee (the “Series Trustee”), and as further supplemented by an Eighteenth Supplemental Indenture dated as of November 1, 2024 (the “Eighteenth Supplemental Indenture”) between the Company and the Series Trustee, pursuant to which the Notes are being issued. The Notes are being offered to the public in accordance with an Underwriting Agreement dated November 14, 2024 (the “Underwriting Agreement”) among the Company and the Underwriters named on Schedule I thereto. Capitalized terms used and not defined herein shall have the meanings assigned to them in the Registration Statement or the Indenture (as defined below).

Documents Reviewed

In connection with this opinion letter, we have examined the following documents:

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The documents referred to in clauses (d) through (j) above are referred to collectively as the “Subject Documents” and each, individually, as a “Subject Document,” and the Original Indenture, as supplemented and/or amended, as applicable, by the Third Supplemental and Amending Indenture and the Eighteenth Supplemental Indenture, is referred to as the “Indenture.”

In addition we have examined and relied upon the following:

(i) a certificate from the assistant corporate secretary of the Company certifying as to (A) true and correct copies of the articles of incorporation and bylaws of the Company (the “Organizational Documents”), (B) the resolutions of the Board of Directors of the Company (the “Board”) effective January 27, 2023 authorizing the filing of the Registration Statement and regarding the amount of securities authorized to be issued under the Registration Statement, (C) an approval of senior officers of the Company effective November 14, 2024 relating to the issuance and sale of the Notes by the Company, and (D) the incumbency and specimen signature(s) of the individual(s) authorized to execute and deliver the Underwriting Agreement, the Eighteenth Supplemental Indenture and the Global Securities on behalf of the Company;

(ii) a certificate dated November 18, 2024 issued by the State Corporation Commission of the Commonwealth of Virginia, attesting to the corporate status and good standing of the Company in the Commonwealth of Virginia; and

(iii) originals, or copies identified to our satisfaction as being true copies, of such other records, documents and instruments as we have deemed necessary for the purposes of this opinion letter.

“Applicable Law” means the law of the Commonwealth of Virginia and the State of New York and the relevant laws of the United States.

2

Assumptions Underlying Our Opinions

For all purposes of the opinions expressed herein, we have assumed, without independent investigation, the following:

(a) Factual Matters. To the extent that we have reviewed and relied upon (i) certificates of the Company or authorized representatives thereof and (ii) certificates and assurances from public officials, all of such certificates and assurances are accurate with regard to factual matters.

(b) Signatures. The signatures of individuals who have signed the Subject Documents are genuine and (other than those of individuals signing on behalf of the Company) authorized.

(c) Authentic and Conforming Documents. All documents submitted to us as originals are authentic, complete and accurate, and all documents submitted to us as copies conform to authentic original documents.

(d) Organizational Status, Power and Authority and Legal Capacity of Certain Parties. All parties to the Subject Documents are validly existing and in good standing in their respective jurisdictions of formation and have the capacity and full power and authority to execute, deliver and perform the Subject Documents and the documents required or permitted to be delivered and performed thereunder, except that no such assumption is made as to the Company as of the date hereof. All individuals who have signed each Subject Document had the legal capacity to execute such Subject Document.

(e) Authorization, Execution and Delivery of Subject Documents. The Subject Documents and the documents required or permitted to be delivered thereunder have been duly authorized by all necessary corporate, limited liability company, business trust, partnership or other action on the part of the parties thereto and have been duly executed and delivered by such parties, except that no such assumption is made as to the Company.

(f) Subject Documents Binding on Certain Parties. The Subject Documents and the documents required or permitted to be delivered thereunder are valid and binding obligations enforceable against the parties thereto in accordance with their terms, except no such assumption is made as to the Company.

(g) Noncontravention. Neither the issuance of the Notes by the Company or the execution and delivery of the Subject Documents by any party thereto nor the performance by such party of its obligations thereunder will conflict with or result in a breach of (i) the certificate or articles of incorporation, bylaws, certificate or articles of organization, operating agreement, certificate of limited partnership, partnership agreement, trust agreement or other similar organizational documents of any such party, except that no such assumption is made with respect to the Company as to its Organizational Documents, (ii) any law or regulation of any jurisdiction applicable to any such party, except that no such assumption is made with respect to the Company as to any Applicable Law or (iii) any order, writ, injunction or decree of any court or governmental instrumentality or agency applicable to any such party or any agreement or instrument to which any such party may be a party or by which its properties are subject or bound, except that no such assumption is made with respect to the Company as to the Subject Documents.

3

(h) Governmental Approvals. All consents, approvals and authorizations of, or filings with, all governmental authorities that are required as a condition to the issuance of the Notes or to the execution and delivery of the Subject Documents by the parties thereto or the performance by such parties of their obligations thereunder have been obtained or made, except that no such assumption is made with respect to any consent, approval, authorization or filing that is applicable to the Company.

(i) No Mutual Mistake, Amendments, etc. There has not been any mutual mistake of fact, fraud, duress or undue influence in connection with the issuance of the Notes as contemplated by the Registration Statement, Prospectus and the Prospectus Supplement. There are no oral or written statements or agreements that modify, amend or vary, or purport to amend or vary, any of the terms of the Subject Documents, except in the case of the terms of the Original Indenture applicable to the Notes for Third Supplemental and Amending Indenture and the Eighteenth Supplemental Indenture.

Our Opinions

Based on and subject to the foregoing and the exclusions, qualifications, limitations and other assumptions set forth in this opinion letter, we are of the opinion that:

1. Organizational Status. The Company is a validly existing corporation under the laws of the Commonwealth of Virginia, and is in good standing under such laws.

2. Power and Authority. The Company has the corporate power and authority to issue the Notes.

3. Validity. When (i) the Notes have been issued and sold as contemplated by the Registration Statement, the Prospectus and the Prospectus Supplement, (ii) the Company has received the consideration provided for in the Prospectus Supplement and the Underwriting Agreement and (iii) the Notes have been completed, executed, authenticated and delivered in accordance with the provisions of the Indenture, the Notes will constitute the valid and binding obligations of the Company, enforceable against the Company in accordance with their terms.

Matters Excluded from Our Opinions

We express no opinion with respect to the enforceability of any agreement of the Company as may be included in any Subject Document relating to indemnification, contribution or exculpation from costs, expenses or other liabilities or regarding the choice of governing law (other than the enforceability in a court of the State of New York or in a federal court sitting in the State of New York and applying New York law to any such agreement that the laws of the State of New York shall govern).

Qualifications and Limitations Applicable to Our Opinions

The opinions set forth above are subject to the following qualifications and limitations:

(a) Applicable Law. Our opinions are limited to the Applicable Law, and we do not express any opinion concerning any other law.

(b) Bankruptcy. Our opinions are subject to the effect of any applicable bankruptcy, insolvency (including, without limitation, laws relating to preferences, fraudulent transfers and equitable subordination), reorganization, moratorium and other similar laws affecting creditors’ rights generally.

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(c) Equitable Principles. Our opinions are subject to the effect of general principles of equity (regardless of whether considered in a proceeding in equity or at law), including, without limitation, concepts of materiality, reasonableness, good faith and fair dealing.

(d) Choice of New York Law and Forum. To the extent that our opinions relate to the enforceability of the choice of New York law or any choice of New York forum provisions of any Subject Document, our opinion is rendered in reliance upon N.Y. Gen. Oblig. Law §§ 5-1401 and 5-1402 and N.Y. CPLR 327(b) and is subject to the qualification that such enforceability may be limited by principles of public policy, comity and constitutionality.

Miscellaneous

The foregoing opinion is being furnished only for the purpose referred to in the first paragraph of this opinion letter. Our opinions are based on statutes, regulations and administrative and judicial interpretations which are subject to change. We undertake no responsibility to update or supplement these opinions subsequent to the date hereof. We hereby consent to the filing of this opinion as an exhibit to the Company’s Current Report on Form 8-K and the incorporation of this opinion by reference in the Registration Statement and to references to us under the heading “Legal Matters” in the Registration Statement and in the Prospectus Supplement relating to the Notes. In giving this consent, we do not admit that we are within the category of persons whose consent is required by Section 7 of the Act or the rules and regulations of the SEC promulgated thereunder.

5

Exhibit 8.1

November 18, 2024

Dominion Energy, Inc.

120 Tredegar Street

Richmond, Virginia 23219

Ladies and Gentlemen:

We have acted as United States federal income tax counsel for Dominion Energy, Inc. (the “Company”) in connection with (i) the Registration Statement on Form S-3 (File No. 333-269879) (the “Registration Statement”), which was filed by the Company with the Securities and Exchange Commission in connection with the registration under the Securities Act of 1933, as amended (the “Act”), of certain securities of the Company, including Junior Subordinated Notes, and (ii) the issuance by the Company of up to $1,250,000,000 2024 Series C Enhanced Junior Subordinated Notes due 2055 (the “Junior Subordinated Notes”), as described in the Company’s Prospectus, dated February 21, 2023 (the “Prospectus”) and Prospectus Supplement, dated November 14, 2024 (the “Prospectus Supplement”). The Registration Statement became effective on February 21, 2023. This opinion letter is being furnished in accordance with the requirements of Item 16 of Form S-3 and Item 601(b)(5)(i) of Regulation S-K promulgated under the Act.

In rendering our opinion, we have examined originals or copies, certified or otherwise identified to our satisfaction, of (i) the Registration Statement, (ii) the Prospectus, (iii) the Prospectus Supplement, (iv) the Indenture as defined in the underwriting agreement relating to the offer and sale of the Junior Subordinated Notes (the “Underwriting Agreement”), (v) the Underwriting Agreement, and (vi) such other agreements and documents as we have deemed relevant and necessary, and we have made such investigations of law as we have deemed appropriate as a basis for the opinion expressed below.

In our examination, we have assumed, with your permission, (i) the authenticity of original documents, (ii) the accuracy of copies and the genuineness of signatures, (iii) that the execution and delivery by each party to a document and the performance by such party of its obligations thereunder have been authorized by all necessary measures and do not violate or result in a breach of or default under such party’s certificate or instrument of formation and by-laws or the laws of such party’s jurisdiction of organization, (iv) that each agreement represents the entire agreement between the parties with respect to the subject matter thereof, (v) that the parties to each agreement have complied, and will comply, with all of their respective covenants, agreements and undertakings contained therein, (vi) that the transactions provided for by each agreement were and will be carried out in accordance with their terms, (vii) that the factual representations made to us by the Company in its officer’s certificate dated as of the date hereof and delivered to us for purposes of this opinion (the “Officer’s Certificate”) are true, correct and complete and will be true, correct and complete at the time of closing of the offering and delivery of the Junior Subordinated Notes (as if made as of such time), and (viii) that any factual representations made in the Prospectus, the Prospectus Supplement or the Officer’s Certificate “to the best knowledge of,” “in the belief of,” or similarly qualified are true, correct and complete without such qualification. If any of the above described assumptions are untrue for any reason or if the issuance of the Junior Subordinated Notes is consummated in a manner that is inconsistent with the manner in which it is described in the Prospectus Supplement, our opinion as expressed below may be adversely affected and may not be relied upon.

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In rendering our opinion, with your permission, we have not undertaken any independent investigation or verification of any fact or matter set forth in any document or materials or any assumption upon which we have relied (including, without limitation, any statement or representation contained in the Officer’s Certificate), and we expressly disclaim any intent, undertaking, or obligation to make any such investigation or verification.

The opinion set forth below is based upon the Internal Revenue Code of 1986, as amended, Treasury Regulations (including temporary and proposed Treasury Regulations) issued thereunder, Internal Revenue Service (“IRS”) rulings and pronouncements and judicial decisions now in effect, all of which are subject to change, possibly with retroactive effect. Our opinion is limited to the matters expressly stated herein. Our opinion is rendered only as of the date hereof, and its validity could be affected by subsequent changes in applicable law. We disclaim any undertaking to advise you or any other person with respect to any such change subsequent to the date hereof. An opinion of counsel with respect to an issue represents counsel’s best judgment as to the outcome on the merits with respect to such issue and is not binding on the IRS or the courts. Thus, there can be no assurance or guarantee that the IRS will not assert a contrary position with respect to an issue or any conclusions contained herein, or that a court will not sustain such a position if asserted by the IRS.

Based upon and subject to the foregoing, the discussion contained in the Prospectus Supplement under the caption “Material U.S. Federal Income Tax Considerations,” insofar as such discussion relates to legal conclusions with respect to matters of U.S. federal income tax law, represents our opinion and, subject to the qualifications, exceptions and limitations stated therein and herein, such discussion is accurate in all material respects. Such discussion does not, however, purport to discuss all U.S. federal income tax consequences to holders of the Junior Subordinated Notes and is limited to those U.S. federal income tax consequences to holders of the Junior Subordinated Notes specifically discussed therein and subject to the qualifications set forth therein and herein.

We are rendering this opinion to you solely in connection with the offering of the Junior Subordinated Notes, and this opinion may not be relied upon by any other person or for any other purpose without our prior written consent. We hereby consent to use of this opinion as an exhibit to the Company’s Current Report on Form 8-K regarding the issuance and sale of the Junior Subordinated Notes and the incorporation of this opinion by reference in the Registration Statement and to references to us under the heading “Legal Matters” in the Registration Statement and in the Prospectus Supplement relating to the Junior Subordinated Notes. In giving this consent, we do not thereby admit that we come within the category of persons whose consent is required by the Act or the Rules.