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Southwest Power Pool (SPP)
The Southwest Power Pool (SPP) Assessment Area is a NERC RE that covers 370,000 square miles and encompasses all or part of Arkansas, Kansas, Louisiana, Mississippi, Missouri, New Mexico, Oklahoma, and Texas. The SPP RE reporting footprint includes the MRO entity members that are part of the SPP Planning Coordinator, which consists of the Nebraska entities. SPP’s footprint consists of 20 BA Areas including 48,368 miles of transmission lines, 915 generating plants, and 2,481 substations.
Recent Boundary Changes
The SPP RC is coordinating with Entergy, CLECO, Lafayette Utilities System, Louisiana Energy and Power Authority, and MISO for the transition of those entities to the MISO RC footprint and eventually into the MISO BA Area and the MISO Market. This transition began in June 2013 and will conclude in December 2013. This transition into the MISO Market and MISO BA is expected to result in significant changes in flows as compared to what has historically been observed and managed using existing congestion management processes. SPP and MISO are evaluating ways to mitigate reliability concerns from these operational changes by improving how flows are accounted for and reviewing congestion management techniques for potential enhancements. These additional coordination activities are expected to continue to ensure the reliable operation of the interconnected transmission system.
  • Link to Website
  • Link to SPP 2013 LTRA Part II Documentation (Methods and Assumptions)
Long Term Reliability Assessment Methods and Assumptions
  • 2013 LTRA Part II
  • 2012 LTRA Part II
  • 2011 LTRA Part II
Summer Reliability Assessment Methods and Assumptions
  • 2013 SRA Part II
  • 2012 SRA Part II
  • 2011 SRA Part II
Winter Reliability Assessment Methods and Assumptions
  • 2013 WRA Part II
  • 2012 WRA Part II
  • 2011 WRA Part II

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