Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2021

Asset Retirement Obligation Disclosure [Abstract]

Changes to Asset Retirement Obligations

The changes to AROs during 2020 and 2021 were as follows:

	Amount
(millions)
Dominion Energy
AROs at December 31, 2019	$	5,184
Obligations incurred during the period		67
Obligations settled during the period		(114	)
Revisions in estimated cash flows(1)		228
Accretion		218
AROs at December 31, 2020(2)	$	5,583
Obligations incurred during the period		31
Obligations settled during the period		(165	)
Revisions in estimated cash flows(3)		(151	)
Accretion		224
Sale of non-wholly-owned nonregulated solar facilities		(49	)
AROs at December 31, 2021(2)	$	5,473
Virginia Power
AROs at December 31, 2019	$	3,581
Obligations incurred during the period		48
Obligations settled during the period		(85	)
Revisions in estimated cash flows(4)		139
Accretion		137
AROs at December 31, 2020	$	3,820
Obligations incurred during the period		26
Obligations settled during the period		(131	)
Revisions in estimated cash flows(5)		67
Accretion		141
AROs at December 31, 2021	$	3,923

(1) Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities, asbestos abatement costs associated with certain utility facilities and from the completion of a nuclear decommissioning cost study related to Summer.

(2) Includes $179 million and $198 million reported in other current liabilities at December 31, 2020 and 2021, respectively.

(3) Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities, estimated cash flow projections associated with the recovery of spent nuclear fuel costs for its AROs associated with the decommissioning of Kewaunee and estimated cash flow projections associated with certain gas distribution pipelines.  These revisions in 2021 resulted in a charge of $44 million ($35 million after-tax) within other operations and maintenance expense in the Consolidated Statements of Income as well as a $173 million decrease to property, plant and equipment, net.

(4) Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities and asbestos abatement costs associated with certain utility facilities.

(5) Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities.

In addition, Virginia Power revised its estimated cash flows for the existing ARO related to future ash pond and landfill closure costs, which resulted in a $113 million ($84 million after-tax) benefit in other operations and maintenance expense in the Consolidated Statements of Income in 2019.