Affiliated and Related Party Transactions

6 Months Ended

Jun. 30, 2025

Related Party Transactions [Abstract]

Affiliated and Related Party Transactions

12. AFFILIATED AND RELATED PARTY TRANSACTIONS

DES, on behalf of itself and its parent company, provides the following services to DESC, which are rendered at direct or allocated cost: information systems, telecommunications, customer support, marketing and sales, human resources, corporate compliance, purchasing, financial, risk management, public affairs, legal, investor relations, gas supply and capacity management, strategic planning, general administrative and retirement benefits. Costs for these services include amounts capitalized. Amounts expensed are primarily recorded in other operations and maintenance - affiliated suppliers and other income (expense), net in the Consolidated Statements of Comprehensive Income.

DESC transacts with affiliates for certain quantities of electricity in the ordinary course of business. DESC also enters into certain commodity derivative contracts with affiliates. DESC uses these contracts, which are principally comprised of forward commodity purchases, to manage commodity price risks associated with purchases of electricity. See Note 7 for additional information.

	Three Months Ended June 30,				Six Months Ended June 30,
(millions)	2025		2024		2025		2024
Direct and allocated costs from DES(1)	$	58	$	57	$	120	$	110
Operating Revenues - Electric from sales to affiliate		2		2		3		3
Operating Revenues - Gas from sales to affiliate		1		1		1		1
Operating Expenses - Other taxes from affiliate		2		2		5		5
Purchases of electricity from solar affiliates		4		3		7		4

(1)Includes capitalized expenditures of $19 million and $15 million for the three months ended June 30, 2025 and 2024, respectively, and $38 million and $27 million for the six months ended June 30, 2025 and 2024, respectively.

(millions)	June 30, 2025		December 31, 2024
Payable to DES	$	16	$	19
Payable to SCANA Corporation		7		7
Derivative assets with affiliates(1)		33		48

(1)Includes amounts recorded in current derivative assets of $5 million and $4 million as of June 30, 2025 and December 31, 2024, respectively, and amounts recorded in noncurrent derivative assets of $28 million and $44 million as of June 30, 2025 and December 31, 2024, respectively.

Borrowings from an affiliate are described in Note 5.