Exhibit 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement No. 333-226039 on Form S-8 of our report dated June 27, 2022, relating to the financial statements and supplemental schedule of the Dominion Energy Ohio Union Savings Plan, appearing in this Annual Report on Form 11-K of the Dominion Energy Ohio Union Savings Plan for the year ended December 31, 2021.
/s/ DELOITTE & TOUCHE LLP
Richmond, Virginia
June 27, 2022