Income Taxes (Tables)

9 Months Ended

Sep. 30, 2021

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,	2021			2020			2021			2020
U.S. statutory rate		21.0	%		21.0	%		21.0	%		21.0	%
Increases (reductions) resulting from:
State taxes, net of federal benefit		2.0			1.5			4.5			4.7
Investment tax credits		(5.6	)		(30.5	)		(5.8	)		(5.6	)
Production tax credits		(0.5	)		(2.4	)		(0.6	)		(0.9	)
Reversal of excess deferred income    taxes		(3.8	)		(14.5	)		(2.2	)		(1.9	)
State legislative change		(1.0	)		—			(1.0	)		—
Change in tax status		—			(6.1	)		—			—
AFUDC - equity		(0.5	)		(1.1	)		(0.5	)		(0.3	)
Changes in state deferred taxes associated    with assets held for sale		(0.5	)		(11.6	)		—			—
Absence of tax on noncontrolling interest		(0.2	)		14.1			—			—
Other, net		(1.1	)		(1.8	)		—			—
Effective tax rate		9.8	%		(31.4	)%		15.4	%		17.0	%