Income Taxes (Tables)

6 Months Ended

Jun. 30, 2023

Income Tax Disclosure [Abstract]

Effective Income Tax

For continuing operations, including noncontrolling interests, the statutory U.S. federal income tax rate reconciles to the Companies’ effective income tax rate as follows:

	Dominion Energy						Virginia Power
Six Months Ended June 30,	2023			2022			2023			2022
U.S. statutory rate		21.0	%		21.0	%		21.0	%		21.0	%
Increases (reductions) resulting from:
Recognition of taxes - sale of    subsidiary stock		—			(24.1	)
State taxes, net of federal benefit		3.8			(2.8	)		4.6			4.4
Investment tax credits		(3.1	)		4.5			(0.3	)		(6.9	)
Production tax credits		(0.5	)		0.5			(0.8	)		(1.0	)
Reversal of excess deferred income    taxes		(2.0	)		4.2			(2.3	)		(3.9	)
Changes in state deferred taxes associated    with assets held for sale		—			(1.4	)
AFUDC - equity		(0.1	)		0.2			(0.1	)		(1.0	)
Other, net		(1.2	)		0.3			(0.5	)		0.6
Effective tax rate		17.9	%		2.4	%		21.6	%		13.2	%