Income Taxes (Tables)

9 Months Ended

Sep. 30, 2022

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
Nine Months Ended September 30,	2022			2021			2022			2021
U.S. statutory rate		21.0	%		21.0	%		21.0	%		21.0	%
Increases (reductions) resulting from:
Recognition of taxes - sale of    subsidiary stock		7.3			—			—			—
State taxes, net of federal benefit		4.7			2.0			4.4			4.5
Investment tax credits		(6.4	)		(5.6	)		(8.9	)		(5.8	)
Production tax credits		(0.7	)		(0.5	)		(1.0	)		(0.6	)
Reversal of excess deferred income    taxes		(6.1	)		(3.8	)		(3.7	)		(2.2	)
State legislative change		—			(1.0	)		—			(1.0	)
Changes in state deferred taxes associated    with assets held for sale		0.4			(0.5	)		—			—
AFUDC - equity		(0.6	)		(0.5	)		(0.8	)		(0.5	)
Absence of tax on noncontrolling interest		—			(0.2	)		—			—
Other, net		(0.4	)		(1.1	)		0.5			—
Effective tax rate		19.2	%		9.8	%		11.5	%		15.4	%