Investor Presentaiton

Overview of selected Virginia legislation Biennial review summary First biennial Initial filing Final order Investment under review Years reviewed Authorized return Equity ratio Collar Earnings sharing Earnings sharing cap July 2023 ~March 2024 2021-2022 9.35% End of year 0.70% Second biennial March 2025 Late 2025 Third biennial "Base" only - Rider investment outside scope 15% to shareholders None 2023-2024 9.70% 52.1%² None 15% to shareholders 1.5% above ROE March 2027 Late 2027 2025 2026 (To be set during B2) End of year None 15% to shareholders 1.5% above ROE 2028 - 2029 Forward test years Performance-based adjustment¹ 2024 2025 2026 - 2027 +/- 0.50% +/- 0.50% Dominion 1 The Commission will have discretion to adjust Dominion Energy's authorized return upward/downward by up to 0.50%, based on criteria such as reliability, generating plant Energy® performance and customer service beginning in 2025 or 2027 biennial 2Through year-end 2024, DEV will be directed to undertake reasonable efforts to maintain a common equity capitalization to total capitalization ratio of 52.1% 16

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