Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2024

Related Party Transactions [Abstract]

Related Party Transactions

Significant affiliate transactions among the companies and related parties including billings under the Interchange Agreement for the years ended Dec. 31:

(Millions of Dollars)	2024		2023		2022
Operating revenues:
Electric	$	216	$	204	$	202
Operating expenses:
Purchased power	384		424		445
Transmission expense	75		69		68
Natural gas purchased for resale	1		1		—
Other operating expenses — paid to Xcel Energy Services Inc.	129		119		114
Interest income	—		1		—
Interest expense	1		1		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	$	28	$	—	$	—	$	9
PSCo	2		—		1		—
Other subsidiaries of Xcel Energy Inc.	3		13		12		13
	$	33	$	13	$	13	$	22