Income Taxes (Tables)

3 Months Ended

Mar. 31, 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
Three Months Ended March 31,	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		—			19.7
State taxes, net of federal benefit		3.8			4.8			4.6			4.4
Investment tax credits		(2.6	)		(7.3	)		(0.3	)		(6.7	)
Production tax credits		(0.4	)		(0.8	)		(0.7	)		(0.8	)
Reversal of excess deferred income    taxes		(1.9	)		(5.6	)		(2.7	)		(3.0	)
Changes in state deferred taxes associated    with assets held for sale		—			1.1
AFUDC - equity		(0.1	)		(1.0	)		0.2			(0.9	)
Other, net		(1.2	)		0.3			(0.2	)		0.6
Effective tax rate		18.6	%		32.2	%		21.9	%		14.6	%