Exhibit 23.4
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 financial statements of Dominion MLP Holding Company II, LLC (formerly known as Dominion MLP Holding Company II, 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