Investor Presentaiton

Important note for investors This presentation contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 regarding Dominion Energy. The statements relate to, among other things, expectations, estimates and projections concerning the business and operations of Dominion Energy. We have used the words "anticipate", "believe", "could", "estimate", "expect", "intend", "may", "plan", "outlook", "predict", "project", "should", "strategy", "target", "will", "potential" and similar terms and phrases to identify forward-looking statements in this presentation. Such forward-looking statements, including 2Q23 operating earnings guidance and projected dividends, are subject to various risks and uncertainties. As outlined in our SEC filings, factors that could cause actual results to differ include, but are not limited to: the direct and indirect impacts of implementing recommendations resulting from the business review announced in November 2022; unusual weather conditions and their effect on energy sales to customers and energy commodity prices; extreme weather events and other natural disasters; extraordinary external events, such as the current pandemic health event resulting from COVID-19; federal, state and local legislative and regulatory developments; changes to regulated rates collected by Dominion Energy; timing and receipt of regulatory approvals necessary for planned construction or expansion projects and compliance with conditions associated with such regulatory approvals; the inability to complete planned construction projects within time frames initially anticipated; risks and uncertainties that may impact the ability to develop and construct the Coastal Virginia Offshore Wind (CVOW) Commercial Project within the currently proposed timeline, or at all, and consistent with current cost estimates along with the ability to recover such costs from customers; changes to federal, state and local environmental laws and regulations, including those related to climate change; cost of environmental strategy and compliance, including cost related to climate change; changes in implementation and enforcement practices of regulators relating to environmental standards and litigation exposure for remedial activities; changes in operating, maintenance and construction costs; additional competition in Dominion Energy's industries; changes in demand for Dominion Energy's services; receipt of approvals for, and timing of, closing dates for acquisitions and divestitures; impacts of acquisitions, divestitures, transfers of assets by Dominion Energy to joint ventures, and retirements of assets based on asset portfolio reviews; adverse outcomes in litigation matters or regulatory proceedings; fluctuations in interest rates; the effectiveness to which existing economic hedging instruments mitigate fluctuations in currency exchange rates of the Euro and Danish Krone associated with certain fixed price contracts for the major offshore construction and equipment components of the CVOW Commercial Project; changes in rating agency requirements or credit ratings and their effect on availability and cost of capital; and capital market conditions, including the availability of credit and the ability to obtain financing on reasonable terms. Other risk factors are detailed from time to time in Dominion Energy's quarterly reports on Form 10-Q and most recent annual report on Form 10-K filed with the U.S. Securities and Exchange Commission. The information in this presentation was prepared as of May 5, 2023. Dominion Energy undertakes no obligation to update any forward-looking information statement to reflect developments after the statement is made. Projections or forecasts shown in this document are based on the assumptions listed in this document and are subject to change at any time. This presentation shall not constitute an offer to sell or the solicitation of an offer to buy securities. Any offers to sell or solicitations of offers to buy securities will be made in accordance with the requirements of the Securities Act of 1933, as amended. This presentation has been prepared primarily for security analysts and investors in the hope that it will serve as a convenient and useful reference document. The format of this document may change in the future as we continue to try to meet the needs of security analysts and investors. This document is not intended for use in connection with any sale, offer to sell or solicitation of any offer to buy securities. This presentation includes certain financial measures that have not been prepared in accordance with U.S. generally accepted accounting principles (GAAP). In providing its quarterly operating earnings per share guidance (non-GAAP), the company notes that there could be differences between such non-GAAP financial measure and the GAAP equivalent of reported net income per share. Reconciliation of such non-GAAP measure to net income per share is not provided, because the company cannot, without unreasonable effort, estimate or predict with certainty various components of net income. These components, net of tax, include but are not limited to, acquisitions, divestitures, impairment charges, changes in accounting principles, extreme weather events and other natural disasters. Please continue to regularly check Dominion Energy's website at www.dominionenergy.com/investors. Dominion Energy® 2

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