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Mountain West Transmission Group Initiative**

The Mountain West Transmission Group (Mountain West) is an informal collaboration of electricity service providers that are working to develop strategies to adapt to the changing electric industry. The group was formed in early 2013 to evaluate an array of options ranging from a common transmission tariff to​ regional transmission organization (RTO) membership. Based on the results of extensive evaluations, Mountain West decided to focus its attention on full membership in an existing RTO.​

Current Status​​

April 23, 2018: WAPA is assessing next steps following Public Service Company of Colorado’s decision to withdraw from the initiative. WAPA appreciates the strong collaborative partnerships within the Mountain West Transmission Group and remains committed to working with neighboring entities across its 15-state footprint to develop strategies to adapt to the evolving electricity industry. WAPA will continue to evaluate and pursue opportunities to optimize the use of generation and transmission resources across multiple utility systems.​

​Recent news

Sept. 22, 2017: The Mountain West participants completed initial discussions with the Southwest Power Pool’s management team, concerning membership in the SPP RTO. Through these discussions, Mountain West has determined that membership in SPP would provide opportunities to reduce customer costs, and maximize use of resources and the grid. Read more in the news release.

​​​​ Public and regulatory proces​​ses​​

Each Mountain West participant is pursuing regulatory or governing body ​approval, as applicable. ​P​​ublic proce​sses in progress include:


​Mountain West participants

Mountain West includes one investor-owned utility; two municipal electricity providers; two generation and transmission cooperatives; and two federal power marketing administration projects. The Mountain West participants are a subset of the WestConnect planning region and are members of the Colorado Coordinated Planning Group (CCPG). Current participants are listed below and other electricity providers may join after initial implementation.

  • Basin Electric Power Cooperative (BEPC)
  • Black Hills Energy:
    • Black Hills Power (BHP)
    • Black Hills Colorado Electric Utility Company (BHCE)
    • Cheyenne Light Fuel & Power Company (CLFP)
  • Colorado Springs Utilities (CSU)
  • Platte River Power Authority (PRPA)
  • Tri‐State Generation and Transmission Association (Tri‐State)
  • Western Area Power Administration (WAPA)
    • Loveland Area Projects (LAP)
    • Colorado River Storage Project (CRSP)

​Production Cost Savings Reports

As one component of the evaluation of the benefits and costs of regional market participation, the Mountain West entities commissioned studies of the potential production cost savings. 

Mountain West timeline

​Ongoing: ​Customer, regulator, and stakeholder meetings
​January 2017: ​Mountain West consensus on specific RTO for additional discussions
​Mid- to Late-2017: ​Discussions with RTO; Mountain West entities develop consensus about whether or not to negotiate full RTO membership
​Late-2017 to ​2018: ​Stakeholder processes; state and federal regulatory approvals
​2019: ​Implementation​

*WAPA specific* - customer communication and presentations (PDFs)

**NOTE: This is a WAPA webpage to share publicly available information regarding WAPA's involvement with the Mountain West Transmission Group. It is not a Mountain West website, and does not represent the views or actions of the other Mountain West participants individually or as a group.

Page Last Updated: 4/23/2018 9:49 AM