Related Party Transactions

12 Months Ended

Dec. 31, 2014

Xcel Energy Services Inc. provides management, administrative and other services for the subsidiaries of Xcel Energy Inc., including SPS. The services are provided and billed to each subsidiary in accordance with service agreements executed by each subsidiary. SPS uses the service provided by Xcel Energy Services Inc. whenever possible. Costs are charged directly to the subsidiary and are allocated if they cannot be directly assigned.

Xcel Energy Inc., NSP-Minnesota, PSCo and SPS have established a utility money pool arrangement with the utility subsidiaries. See Note 4 for further discussion of this borrowing arrangement.

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

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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