Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2014

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



(Thousands of Dollars)	2014		2013		2012
Operating revenues:
Electric	$	23	$	1,331	$	6,539
Operating expenses:
Purchased power	9,614		8,136		9,271
Other operating expenses — paid to Xcel Energy Services Inc.	145,917		127,669		117,277
Interest expense	73		178		76
Interest income	3		—		10

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



	2014				2013
(Thousands of Dollars)	Accounts Receivable		Accounts Payable		Accounts Receivable		Accounts Payable
NSP-Minnesota	$	1,983	$	—	$	3,462	$	—
NSP-Wisconsin	—		31		—		26
PSCo	—		5,803		—		1,056
Other subsidiaries of Xcel Energy Inc.	—		13,956		12,378		14,305
	$	1,983	$	19,790	$	15,840	$	15,387