On April 7, 2026, Dominion Energy, Inc. (Dominion Energy) entered into an amendment to its existing Sustainability Revolving Credit Agreement, dated as of June 9, 2021 (the Sustainability Credit Agreement), with Sumitomo Mitsui Banking Corporation, as administrative agent, and the other agents and lenders party thereto. The amendment, among other changes, extends the maturity date of the Sustainability Credit Agreement to April 7, 2029 and provides for Dominion Energy to request up to an additional two one-yearextensions of the maturity date subject to certain conditions. The amendment is filed as Exhibit 10.1 hereto and is incorporated herein by reference.

Effective April 8, 2026, Dominion Energy, Virginia Electric and Power Company and Dominion Energy South Carolina, Inc., as borrowers under the Sixth Amended and Restated Revolving Credit Agreement, dated April 8, 2025 (the Core Revolving Credit Agreement), with JP Morgan Chase Bank, N.A., as administrative agent, and the other agents and lenders party thereto, received the consent of the lenders to extend the maturity date of the Core Revolving Credit Agreement to April 8, 2031.