SAN ONOFRE NUCLEAR GENERATING STATION (Tables)

12 Months Ended

Dec. 31, 2025

Regulated Operations [Abstract]

Schedule of Nuclear Decommissioning Trusts

The following table shows the fair values and gross unrealized gains and losses for the securities held in the NDT on the Sempra and SDG&E Consolidated Balance Sheets. We provide additional fair value disclosures for the NDT in Note 11.

NUCLEAR DECOMMISSIONING TRUSTS
(Dollars in millions)
	Cost		Gross unrealized gains		Gross unrealized losses		Estimated fair value
	December 31, 2025
Short-term investments, primarily cash equivalents	$	12	$	—	$	—	$	12
Equity securities	69		221		(2)		288
Debt securities:
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies(1)	46		1		—		47
Municipal bonds(2)	301		4		(5)		300
Other securities(3)	253		5		(3)		255
Total debt securities	600		10		(8)		602
Receivables (payables), net	(3)		—		—		(3)
Total	$	678	$	231	$	(10)	$	899
	December 31, 2024
Short-term investments, primarily cash equivalents	$	10	$	—	$	—	$	10
Equity securities	78		223		(3)		298
Debt securities:
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies	67		1		(1)		67
Municipal bonds	295		1		(9)		287
Other securities	234		2		(8)		228
Total debt securities	596		4		(18)		582
Receivables (payables), net	(15)		—		—		(15)
Total	$	669	$	227	$	(21)	$	875

(1)    Maturity dates are 2026-2056.

(2)    Maturity dates are 2026-2055.

(3)    Maturity dates are 2026-2070.

Schedule of Securities Sold

The following table shows the proceeds from sales of securities in the NDT and gross realized gains and losses on those sales.

SALES OF SECURITIES IN THE NUCLEAR DECOMMISSIONING TRUSTS
(Dollars in millions)
	Years ended December 31,
	2025		2024		2023
Proceeds from sales	$	974	$	874	$	592
Gross realized gains	57		57		27
Gross realized losses	8		10		14