XML 14 R12.htm IDEA: XBRL DOCUMENT v2.3.0.15
Rate Matters
9 Months Ended
Sep. 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 was based on a 2011 test year adjusted for known and measurable changes for 2012, a requested return on equity of 11.25 percent, an electric rate base of $390.3 million and an equity ratio of 51.11 percent.

In September 2011, the parties filed an unopposed black box settlement to resolve all issues in the case.  If the settlement is approved by the NMPRC, base rates will increase by $13.5 million.  SPS has agreed not to file another base rate case until Dec. 3, 2012 with new final rates from the result of such case not going into effect until Jan. 1, 2014 (Settlement Period), provided however, that SPS can request to implement interim rates if the NMPRC standard for interim rates is met.  During the Settlement Period, rates are to remain fixed aside from the continued operation of the fuel adjustment clause and certain exceptions for energy efficiency, a rider for an approved renewable portfolio standard regulatory asset, and actual costs incurred for environmental regulations with an effective date after Dec. 31, 2010.

In October 2011, the NMPRC held hearings on the settlement.  A decision by the NMPRC is expected by year-end and final rates are expected to be implemented effective Jan. 1, 2012.