Operating Segments

6 Months Ended

Jun. 30, 2025

Segment Reporting [Abstract]

Operating Segments

11. OPERATING SEGMENTS

The Corporate and Other segment primarily includes specific items attributable to DESC’s operating segment that are not included in profit measures evaluated by executive management in assessing the segment’s performance or in allocating resources.

DESC’s CODM is Dominion Energy’s CEO. The CODM uses net income (loss) as the primary profit or loss measure at each segment. The CODM considers budget-to-actual variances on a quarterly basis when making decisions about allocating operating and capital resources to each segment, when assessing the performance of each segment and when determining the compensation of certain employees.

In the six months ended June 30, 2025 and 2024, DESC reported an insignificant amount of specific items in the Corporate and Other segment.

The following tables present segment information pertaining to DESC’s operations:

Three Months Ended June 30,	Dominion Energy South Carolina		Corporate and Other			Consolidated Total
(millions)
2025
Operating Revenue	$	832	$	—		$	832
Fuel used in electric generation(1)		155		—			155
Purchased power(1)		37		—			37
Gas purchased for resale(1)		49		—			49
Other operations and maintenance(1)		167		—			167
Depreciation and amortization(1)		142		—			142
Other taxes(1)		77		—			77
Total Operating Expenses		627		—			627
Other income (expense), net(2)		3		—			3
Interest charges, net of AFUDC(1)		70		—			70
Income tax expense(1)		29		2			31
Comprehensive Income Attributable to Noncontrolling Interest(2)		6		—			6
Comprehensive Income (Loss) Available (Attributable) to    Common Shareholder	$	103	$	(2	)	$	101
Total assets (billions)	$	17.3	$	—		$	17.3
2024
Operating Revenue	$	731	$	—		$	731
Fuel used in electric generation(1)		135		—			135
Purchased power(1)		22		—			22
Gas purchased for resale(1)		46		—			46
Other operations and maintenance(1)(3)		168		4			172
Depreciation and amortization(1)		136		—			136
Other taxes(1)		76		—			76
Total Operating Expenses		583		4			587
Other income (expense), net(2)		1		—			1
Interest charges, net of AFUDC(1)		67		—			67
Income tax expense(1)		14		1			15
Comprehensive Income Attributable to Noncontrolling Interest(2)		6		—			6
Comprehensive Income (Loss) Available (Attributable) to    Common Shareholder	$	62	$	(5	)	$	57

(1)The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to DESC’s CODM.

(2)Items designated are other segment items for each reportable segment.

(3)Includes impairment of assets and other charges.

Six Months Ended June 30,	Dominion Energy South Carolina		Corporate and Other			Consolidated Total
(millions)
2025
Operating Revenue	$	1,818	$	—		$	1,818
Fuel used in electric generation(1)		359		—			359
Purchased power(1)		59		—			59
Gas purchased for resale(1)		175		—			175
Other operations and maintenance(1)		341		—			341
Depreciation and amortization(1)		282		—			282
Other taxes(1)		159		—			159
Total Operating Expenses		1,375		—			1,375
Other income (expense), net(2)		6		—			6
Interest charges, net of AFUDC(1)		141		—			141
Income tax expense(1)		47		4			51
Comprehensive Income Attributable to Noncontrolling Interest(2)		14		—			14
Comprehensive Income (Loss) Available (Attributable) to    Common Shareholder	$	247	$	(4	)	$	243
Capital expenditures	$	561	$	—		$	561
Total assets (billions)		17.3		—			17.3
2024
Operating Revenue	$	1,506	$	—		$	1,506
Fuel used in electric generation(1)		280		—			280
Purchased power(1)		32		—			32
Gas purchased for resale(1)		125		—			125
Other operations and maintenance(1)(3)		331		4			335
Depreciation and amortization(1)		272		—			272
Other taxes(1)		154		—			154
Total Operating Expenses		1,194		4			1,198
Other income (expense), net(2)		2		—			2
Interest charges, net of AFUDC(1)		134		—			134
Income tax expense(1)		31		2			33
Comprehensive Income Attributable to Noncontrolling Interest(2)		12		—			12
Comprehensive Income (Loss) Available (Attributable) to    Common Shareholder	$	137	$	(6	)	$	131
Capital expenditures	$	490	$	—		$	490

(1)The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to DESC’s CODM.

(2)Items designated are other segment items for each reportable segment.

(3)Includes impairment of assets and other charges.