Employee Benefit Plans

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Employee Benefit Plans

Note 20. Employee Benefit Plans

Net Periodic Benefit (Credit) Cost

The service cost component of net periodic benefit (credit) cost is reflected in other operations and maintenance expense in Dominion Energy’s Consolidated Statements of Income, except for $4 million and $12 million for the three and nine months ended September 30, 2023, respectively, and $7 million and $19 million for the three and nine months ended September 30, 2022, respectively, presented in discontinued operations. The non-service cost components of net periodic benefit (credit) cost are reflected in other income (expense) in Dominion Energy's Consolidated Statements of Income, except for $(11) million and $(34) million for the three and nine months ended September 30, 2023, respectively, and $(11) million and $(32) million for the three and nine months ended September 30, 2022, respectively, presented in discontinued operations. The components of Dominion Energy’s provision for net periodic benefit cost (credit) are as follows:

	Pension Benefits												Other Postretirement Benefits
	Quarter-to-Date						Year-to-Date						Quarter-to-Date						Year-to-Date
Period Ended September 30,	2023			2022			2023			2022			2023			2022			2023			2022
(millions)
Service cost	$	24		$	35		$	72		$	106		$	3		$	5		$	10		$	16
Interest cost		111			83			332			250			15			11			46			34
Expected return on plan assets		(216	)		(221	)		(648	)		(667	)		(37	)		(47	)		(113	)		(143	)
Amortization of prior service    cost (credit)		—			—			—			—			(10	)		(10	)		(28	)		(29	)
Amortization of net actuarial    (gain) loss		—			39			—			119			(1	)		—			(4	)		(1	)
Curtailment(1)		—			—			—			—			—			(8	)		—			(8	)
Net periodic benefit    (credit) cost	$	(81	)	$	(64	)	$	(244	)	$	(192	)	$	(30	)	$	(49	)	$	(89	)	$	(131	)

(1) 2022 amounts relate primarily to Dominion Energy's sale of Hope.

Employer Contributions

During the three and nine months ended September 30, 2023, Dominion Energy made no contributions to its qualified defined benefit pension plans or other postretirement benefit plans. Dominion Energy is not required to make any contributions to its qualified defined

benefit pension plans or to VEBAs associated with its other postretirement plans in 2023. Dominion Energy considers voluntary contributions from time to time, either in the form of cash or equity securities.