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Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2021

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


(Millions of Dollars)	2021		2020		2019
Operating revenues:

Other	$	5	$	5	$	5
Operating expenses:
Other operating expenses — paid to Xcel Energy Services Inc.	617		571		532

Accounts receivable and payable with affiliates at Dec. 31:


	2021				2020
(Millions of Dollars)	Accounts Receivable		Accounts Payable		Accounts Receivable		Accounts Payable
NSP-Minnesota	$	—	$	16	$	—	$	1
NSP-Wisconsin	—		2		—		1
SPS	—		7		—		6
Other subsidiaries of Xcel Energy Inc.	13		44		8		50
	$	13	$	69	$	8	$	58