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Rate Matters
6 Months Ended
Jun. 30, 2011
Rate Matters [Abstract]  
Rate Matters
5.
Rate Matters

Except to the extent noted below, the circumstances set forth in Note 11 to the financial statements included in SPS' Annual Report on Form 10-K for the year ended Dec. 31, 2010 appropriately represent, in all material respects, the current status of other rate matters, and are incorporated herein by reference.
 
Pending and Recently Concluded Regulatory Proceedings - New Mexico Public Regulation Commission (NMPRC)
 
SPS New Mexico Electric Rate Case - In February 2011, SPS filed a request in New Mexico with the NMPRC seeking to increase New Mexico electric rates approximately $19.9 million. The rate filing is based on a 2011 test year adjusted for known and measurable changes for 2012, a requested return on equity (ROE) of 11.25 percent, an electric rate base of $390.3 million and an equity ratio of 51.11 percent. Rates are expected to go into effect during the first quarter of 2012.

The New Mexico Attorney General (NMAG) has filed a motion to dismiss the rate case or to toll the suspension period of rates, and the NMPRC Staff has also filed a motion to reject the filing and for SPS to file additional information on the grounds that SPS' information supporting its 2011 test year is incomplete. SPS has filed a response asserting that SPS' filing is complete and requesting the NMPRC to deny the NMAG's motion. The NMPRC has not yet acted on the motion. The date for SPS to respond to the Staff's motion has not yet been established.