SPP's WEIS goes live Feb. 1

February 01, 2021

The Southwest Power Pool’s (SPP) Western Energy Imbalance Service market went live at midnight on Feb. 1. The Municipal Energy Agency of Nebraska (MEAN), along with several other regional utilities, are participants in the new regional market.

The Federal Energy Regulatory Commission (FERC) approved the Southwest Power Pool’s (SPP) WEIS tariff in late December. Prior to the real-time balancing market going live, SPP entered a period of parallel operations with its market participants, during which participants continued testing and training in the WEIS market’s production environment. Along with MEAN, WEIS participants include:

  • Basic Electric Power Cooperative
  • Deseret Power Electric Cooperative
  • Tri-Sate Generation and Transmission Association
  • Western Area Power Administration (Upper Great Plains West, Rocky Mountain Region, Colorado River Storage Projects)
  • Wyoming Municipal Power Agency

The tariff defines rates, terms and conditions for the WEIS market and defines the market’s rules and obligations for market participants. The WEIS tariff includes a market participant agreement effective on the date market participants begin their involvement in WEIS. SPP will administer the WEIS tariff separate from its Open Access Transmission Tariff.

Several WEIS participants, including MEAN, are evaluating full membership in the SPP regional transmission organization in the Western Interconnect. SPP will facilitate a public new-member integration process to evaluate the costs, benefits and other impacts of this potential move.

SPP serves as a regional transmission organization, mandated by FERC to ensure reliable supplies of power, adequate transmission infrastructure and competitive wholesale electricity prices on behalf of its members across 17 states in the Central and Western U.S.

Here is a link to SPP's full new release.