Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2012

The table below contains significant affiliate transactions among the companies and related parties for the years ended Dec. 31:

(Thousands of Dollars)	2012		2011		2010
Operating revenues:
Electric	$	6,539	$	7,187	$	6,805
Operating expenses:
Purchased power		9,271		10,896		9,428
Other operating expenses — paid to Xcel Energy Services Inc.		117,277		118,370		109,111
Interest expense		76		83		90
Interest income		10		1		25

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

	2012				2011
	Accounts		Accounts		Accounts		Accounts
(Thousands of Dollars)	Receivable		Payable		Receivable		Payable
NSP-Minnesota	$	3,820	$	-	$	1,314	$	-
NSP-Wisconsin		4		-		-		-
PSCo		-		69		-		319
Other subsidiaries of Xcel Energy Inc.		967		12,294		-		11,509
	$	4,791	$	12,363	$	1,314	$	11,828