Investor Presentaiton

Dominion Energy Virginia Regulated offshore wind Milestone Record of Decision by BOEM Construction completion ~90% Fixed costs¹ Target 2H 2023 (no change) Late 2026 (no change) 2.6 GW capacity; regulated cost-of-service rider Est. installed cost of $10B (including onshore transmission) (no change) Est. lifetime capacity factor 43.3% (gross) / 42.0% (net) (no change) Est. LCOE of ~$80 - $90/MWh (no change) Dominion Fixed costs as percentage of total project costs, excluding contingency Energy® 11

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