Related Party Transactions

12 Months Ended

Dec. 31, 2024

Related Party Transactions [Abstract]

Related Party Transactions

12. Related Party Transactions

Xcel Energy Services Inc. provides management, administrative and other services for the subsidiaries of Xcel Energy Inc., including SPS. The services are provided and billed to each subsidiary in accordance with service agreements executed by each subsidiary. SPS uses services provided by Xcel Energy Services Inc. whenever possible. Costs are charged directly to the subsidiary and are allocated if they cannot be directly assigned.

Xcel Energy, Inc., NSP-Minnesota, NSP-Wisconsin, PSCo and SPS have established a utility money pool arrangement.

See Note 5 for further information.

Significant affiliate transactions among the companies and related parties for the years ended Dec. 31:

(Millions of Dollars)	2024		2023		2022
Operating expenses:
Other operating expenses — paid to Xcel Energy Services Inc.	$	244	$	245	$	238
Interest expense	3		4		1

Accounts receivable and payable with affiliates at Dec. 31 were:

	2024				2023
(Millions of Dollars)	Accounts Receivable		Accounts Payable		Accounts Receivable		Accounts Payable
NSP-Minnesota	$	2	$	—	$	4	$	—
PSCo	8		—		11		—
Other subsidiaries of Xcel Energy Inc.	10		27		11		7
	$	20	$	27	$	26	$	7