Exhibit 23.3
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statementon Form S-3 of our report dated September 11, 2019, relating to the consolidated financial statements of Dominion Cove Point, LLC (formerly known as Dominion Cove Point, Inc.), included in the Current Report onForm 8-K/A of Dominion Energy Gas Holdings, LLC dated November 18, 2019, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
/s/ Deloitte & Touche LLP
Richmond, Virginia
November 18, 2019