Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2015

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



(Thousands of Dollars)	2015		2014		2013
Operating revenues:
Electric	$	—	$	23	$	1,331
Operating expenses:
Purchased power	8,632		9,614		8,136
Other operating expenses — paid to Xcel Energy Services Inc.	197,134		145,917		127,669
Interest expense	156		73		178
Interest income	6		3		—

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



	2015				2014
(Thousands of Dollars)	Accounts Receivable		Accounts Payable		Accounts Receivable		Accounts Payable
NSP-Minnesota	$	1,066	$	—	$	1,983	$	—
NSP-Wisconsin	—		71		—		31
PSCo	—		414		—		5,803
Other subsidiaries of Xcel Energy Inc.	13		28,650		—		13,956
	$	1,079	$	29,135	$	1,983	$	19,790