NOTICE TO THE PUBLIC OF THE PETITION OF VIRGINIA ELECTRIC AND POWER COMPANY D/B/A DOMINION ENERGY VIRGINIA FOR APPROVAL OF A PLAN FOR ELECTRIC DISTRIBUTION GRID TRANSFORMATION PROJECTS PURSUANT TO 56-585.1 A 6 OF THE CODE OF VIRGINIA CASE NO. PUR-2026-00041 LEGAL NOTICE VIRGINIA ELECTRIC AND POWER COMPANY D/B/A DOMINION ENERGY On April 23, 2026, Virginia Electric and Power Company ("Dominion" or "Company") completed the filing of a petition with the State Corporation Commission ("Commission") for approval of a plan for electric distribution grid transformation projects ("Petition") pursuant to 56-585.1 A 6 of the Code of Virginia ("Code"). Specifically, Dominion seeks approval of Phase IV of its plan to transform its electric distribution grid ("GT Plan"), which consists of proposed projects in 2027, 2028, and 2029. Dominion states that Phase IV of the GT Plan would include the continuation of five projects: (i) mainfeeder hardening; (ii) voltage island mitigation; (iii) voltage optimization enablement; (iv) telecommunications; and (v) targeted corridor improvement ("TCI"). The Company proposes to continue the mainfeeder hardening project, previously approved in Phases I, III, and IIIB of the GT Plan, on 41 additional feeders from 2027 through 2029. Dominion proposes an additional $287.7 million of capital investment in mainfeeder hardening as part of Phase IV of the GT Plan. The Company proposes to continue implementation of its voltage island mitigation work, which was previously approved in Phases I, II, and III of the GT Plan. Dominion proposes to complete four additional voltage island mitigation projects, representing an additional $40.9 million of capital investment as part of Phase IV of the GT Plan. The Company also proposes to continue implementation of its voltage optimization enablement program, which was previously approved in Phases II and III of the GT Plan. Dominion estimates that its voltage optimization enablement program affects approximately 43,000 customer premises requiring substation voltage control upgrades and improvements. The Company proposes an additional $531.1 million of capital investments for its voltage optimization enablement program as part of Phase IV of the GT Plan. Dominion further proposes to continue deployment of its telecommunications plan, which was previously approved in Phases I, II, and III of the GT Plan. The Company proposes to continue its deployment of the Tier 2 network to extend high-speed connectivity and multiprotocol label switching technology to an additional 38 critical facilities through Companyowned fiber. Dominion proposes an additional $59 million of capital investments and $5.4 million in operations and maintenance ("O&M") expenses for its telecommunications plan as part of Phase IV of the GT Plan. Finally, the Company proposes to continue deployment of its TCI project, specifically its hazard tree removal and tree overhang pilot programs. Dominion proposes to perform an additional 15,000 miles of hazard tree removal between 20272029 and to expand the tree overhang program on an additional 71 feeders. The Company proposes an additional $119.8 million in O&M expenses for its TCI project as part of Phase IV of the GT Plan. Dominion also requests approval of one new project in conjunction with Phase IV: the Stepdown Conversion Program, which is designed to proactively upgrade parts of the distribution system to a higher voltage, eliminating the need for a stepdown transformer. The Company states that this pilot program would aim to eliminate 24 overhead 500 kilovolt-ampere ("kVA") and 333 kVA stepdown transformers that serve a population of customers that are (1) at risk of an extended outage, and/or (2) served by lower voltages, which factors limit the ability for these customers to pursue electrification or distributed energy resource installations. Dominion asserts that the pilot program would proactively mitigate the risk of extended outages and expand access to electrification, battery storage, and solar. Dominion proposes $64.4 million of capital investments for the Stepdown Conversion Program as part of Phase IV of the GT Plan. In total, the proposed cost associated with Phase IV of the GT Plan is approximately $983.1 million in capital investment and $125.2 million in O&M expenses. The Company also represents that, in preparing the GT Plan, it evaluated each proposed project to determine whether there were any environmental justice concerns. Interested persons are encouraged to review the Petition and supporting documents in full for additional details. The Commission entered an Order for Notice and Hearing in this proceeding that, among other things, scheduled public hearings on Dominion's Petition and assigned a Hearing Examiner to conduct all further proceedings in this matter on behalf of the Commission. A hearing for the receipt of testimony from public witnesses on the Company's Petition shall be convened telephonically by the Hearing Examiner at 10 a.m. on August 5, 2026. On or before July 28, 2026, any person desiring to offer testimony as a public witness shall provide to the Commission: (a) your name, and (b) the telephone number that you wish the Commission to call during the hearing to receive your testimony. This information may be provided to the Commission: (i) by filling out a form on the Commission's website at scc.virginia.gov/caseinformation/webcasting; or (ii) by calling (804) 371-9141 to register. This public witness hearing will be webcast at scc.virginia.gov/case-information/webcasting. Beginning at 10 a.m. on August 5, 2026, the Hearing Examiner will telephone sequentially each person who has signed up to testify as provided above. On August 5, 2026, at 10 a.m., or at the conclusion of the public witness portion of the hearing, whichever is later, in the Commission's second floor courtroom located in the Tyler Building, 1300 East Main Street, Richmond, Virginia 23219, the Hearing Examiner will convene a hearing to receive testimony and evidence related to the Petition from the Company, any respondents, and the Commission Staff ("Staff"). To promote administrative efficiency and timely service of filings upon participants, the Commission has directed the electronic filing of testimony and pleadings, unless they contain confidential information, and required electronic service on parties to this proceeding. An electronic copy of the public version of the Company's Petition may be obtained by submitting a written request to counsel for the Company: Jontille D. Ray, Esquire, McGuireWoods LLP, Gateway Plaza, 800 East Canal Street, Richmond, Virginia 23219, or jray@mcguirewoods.com. Interested persons may also download unofficial copies of the public version of the Petition and the public versions of other documents filed in this case from the Commission's website: scc.virginia.gov/case-information. On or before July 28, 2026, any interested person may submit comments on the Petition by following the instructions found on the Commission's website: scc.virginia.gov/caseinformation/submit-public-comments. Those unable, as a practical matter, to submit comments electronically may file such comments by U.S. mail to the Clerk of the State Corporation Commission, c/o Document Control Center, P.O. Box 2118, Richmond, Virginia 23218-2118. All such comments shall refer to Case No. PUR-2026-00041. On or before June 15, 2026, any person or entity wishing to participate as a respondent in this proceeding may do so by filing a notice of participation with the Clerk of the Commission at scc.virginia.gov/clk/efiling. Those unable, as a practical matter, to file a notice of participation electronically may file such notice by U.S. mail to the Clerk of the Commission at the address listed above. Such notice of participation shall include the email addresses of such parties or their counsel, if available. The respondent simultaneously shall serve a copy of the notice of participation on counsel to the Company, any other respondents and Staff electronically as described above. Pursuant to 5 VAC 520-80 B, Participation as a respondent, of the Commission's Rules of Practice and Procedure, 5 VAC 5-20-10 et seq. ("Rules of Practice"), any notice of participation shall set forth: (i) a precise statement of the interest of the respondent; (ii) a statement of the specific action sought to the extent then known; and (iii) the factual and legal basis for the action. Any organization, corporation, or government body participating as a respondent must be represented by counsel as required by 5 VAC 5-20-30, Counsel, of the Rules of Practice. All filings shall refer to Case No. PUR-2026-00041. For additional information about participation as a respondent, any person or entity should obtain a copy of the Commission's Order for Notice and Hearing. On or before July 7, 2026, each respondent may file with the Clerk of the Commission, at scc.virginia.gov/clk/efiling, any testimony and exhibits by which the respondent expects to establish its case. Any respondent unable, as a practical matter, to file testimony and exhibits electronically may file such by U.S. mail to the Clerk of the Commission at the address listed above. Each witness's testimony shall include a summary not to exceed one page. All testimony and exhibits shall be served electronically on the Staff, the Company, and all other respondents simultaneous with their filing. In all filings, respondents shall comply with the Rules of Practice, as modified herein, including, but not limited to: 5 VAC 5-20-140, Filing and service, and 5 VAC 5-20-240, Prepared testimony and exhibits. All filings shall refer to Case No. PUR-2026-00041. Any documents filed in paper form with the Office of the Clerk of the Commission in this docket may use both sides of the paper. In all other respects, except as modified by the Commission's Order for Notice and Hearing, all filings shall comply fully with the requirements of 5 VAC 5-20-150, Copies and format, of the Rules of Practice. The public version of the Company's Petition, the Commission's Rules of Practice, the Commission's Order for Notice and Hearing, and the public versions of other documents filed in the case may be viewed at: scc.virginia.gov/case-information.