Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2013

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



(Thousands of Dollars)	2013		2012		2011
Operating revenues:
Electric	$	136,917	$	125,344	$	124,334
Operating expenses:
Purchased power	416,173		405,016		399,649
Transmission expense	42,460		44,942		40,870
Natural gas purchased for resale	97		116		98
Other operating expenses — paid to Xcel Energy Services Inc.	61,531		54,137		54,885
Interest expense	22		22		48

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



	2013				2012
(Thousands of Dollars)	Accounts Receivable		Accounts Payable		Accounts Receivable		Accounts Payable
NSP-Minnesota	$	—	$	18,584	$	—	$	26,632
PSCo	—		8		—		71
SPS	26		—		—		4
Other subsidiaries of Xcel Energy Inc.	1,569		6,394		586		4,849
	$	1,595	$	24,986	$	586	$	31,556