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Investments (Tables)

9 Months Ended

Sep. 30, 2025

Equity and Debt Securities and Cash Equivalents and Cost Method Investments in Decommissioning Trust Funds

The Companies’ decommissioning trust funds are summarized below:

		Dominion Energy																				Virginia Power
		Amortized Cost				Total Unrealized Gains				Total Unrealized Losses				Allowance for Credit Losses				Fair Value				Amortized Cost				Total Unrealized Gains				Total Unrealized Losses					Allowance for Credit Losses				Fair Value
(millions)
September 30, 2025
Equity securities:(1)
U.S.		$	1,257			$	4,907			$	(3	)						$	6,161			$	716			$	2,546			$	(2	)							$	3,260
International			51				128				—								179				32				72				—									104
Fixed income securities:(2)
Corporate debt    instruments			496				13				(7	)		$	—				502				288				6				(6	)			$	—				288
Government    securities			1,802				25				(21	)			—				1,806				1,084				14				(14	)				—				1,084
Insurance    contracts(3)			247				—				—								247
Cash equivalents    and other(4)			50				—				—				—				50				9				—				—					—				9
Total		$	3,903			$	5,073			$	(31	)	(5)	$	—			$	8,945			$	2,129			$	2,638			$	(22	)	(5)		$	—			$	4,745
December 31, 2024
Equity securities:(1)
U.S.		$	1,220			$	4,157			$	(4	)						$	5,373			$	695			$	2,155			$	(3	)							$	2,847
International			52				111				—								163				34				65				—									99
Fixed income securities:(2)
Corporate debt    instruments			516				6				(15	)		$	—				507				303				3				(12	)			$	—				294
Government    securities			1,736				7				(39	)			—				1,704				1,038				4				(18	)				—				1,024
Insurance    contracts(3)			239				—				—								239
Cash equivalents    and other(4)			65				—				—				—				65				22				—				—					—				22
Total		$	3,828			$	4,281			$	(58	)	(5)	$	—			$	8,051			$	2,092			$	2,227			$	(33	)	(5)		$	—			$	4,286

(1)Unrealized gains and losses on equity securities are included in other income (expense) and the nuclear decommissioning trust regulatory liability.

(2)Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability. Changes in allowance for credit losses are included in other income (expense).

(3)Includes company owned life insurance contracts measured at cash surrender value.

(4)Dominion Energy includes pending sales of securities of $17 million and $35 million at September 30, 2025 and December 31, 2024, respectively. Virginia Power includes pending sales of securities of $9 million and $22 million at September 30, 2025, and December 31, 2024, respectively.

(5)Dominion Energy’s fair value of securities in an unrealized loss position was $609 million and $1.4 billion at September 30, 2025 and December 31, 2024, respectively. Virginia Power’s fair value of securities in an unrealized loss position was $460 million and $796 million at September 30, 2025 and December 31, 2024, respectively.

Unrealized Gain Loss on Equity

The portion of unrealized gains and losses that relates to equity securities held within Dominion Energy and Virginia Power’s nuclear decommissioning trusts is summarized below:

	Dominion Energy
	Quarter-to-Date						Year-to-Date
Period Ended September 30,	2025			2024			2025			2024
(millions)
Net gains (losses) recognized during    the period	$	458		$	282		$	754		$	919
Less: Net (gains) losses recognized    during the period on securities    sold during the period		(1	)		5			15			1
Unrealized gains (losses) recognized    during the period on securities still    held at period end(1)	$	457		$	287		$	769		$	920

(1)Included in other income (expense) and the nuclear decommissioning trust regulatory liabilities.

	Virginia Power
	Quarter-to-Date						Year-to-Date
Period Ended September 30,	2025			2024			2025			2024
(millions)
Net gains (losses) recognized during    the period	$	236		$	145		$	389		$	473
Less: Net (gains) losses recognized    during the period on securities    sold during the period		—			3			11			(2	)
Unrealized gains (losses) recognized    during the period on securities still    held at period end(1)	$	236		$	148		$	400		$	471

(1)Included in other income (expense) and the nuclear decommissioning trust regulatory liabilities.

Investments Classified by Contractual Maturity Date

The fair value of Dominion Energy and Virginia Power’s fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at September 30, 2025 by contractual maturity is as follows:

	Dominion Energy			Virginia Power
(millions)
Due in one year or less	$	26		$	8
Due after one year through five years		517			255
Due after five years through ten years		532			276
Due after ten years		1,233			833
Total	$	2,308		$	1,372

Marketable Securities

Presented below is selected information regarding Dominion Energy and Virginia Power’s equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds.

	Dominion Energy
	Quarter-to-Date						Year-to-Date
Period Ended September 30,	2025			2024			2025			2024
(millions)
Proceeds from sales	$	869		$	651		$	2,563		$	2,230
Realized gains(1)		18			18			36			77
Realized losses(1)		15			21			57			93

(1)Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liabilities.

	Virginia Power
	Quarter-to-Date						Year-to-Date
Period Ended September 30,	2025			2024			2025			2024
(millions)
Proceeds from sales	$	489		$	297		$	1,412		$	1,370
Realized gains(1)		12			13			26			52
Realized losses(1)		11			16			40			61

(1)Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liabilities.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6B
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