FERC facts

The TWE Project is under the jurisdiction of the Federal Energy Regulatory Commission. FERC is an independent agency that regulates the interstate transmission of electricity and regulates other energy infrastructure.

Information related to TransWest’s FERC filings for the TWE Project will be provided on this page as it becomes available.

FERC filings

TWE Project information

  • The TWE Project is a new high-voltage interregional transmission system designed primarily to deliver renewable wind energy from Wyoming to the Desert Southwest region (California, Nevada, and Arizona). It will include three interconnected segments extending a total of 732 miles between Wyoming and Nevada.
  • The TWE Project will consist of three linked segments that include: (1) a 405-mile, 3,000 MW, 500 kV high-voltage direct current (HVDC) system between Wyoming and Utah; (2) a 278-mile, 1,500 MW, 500 kV high-voltage alternating current (HVAC) transmission line between Utah and Nevada; and (3) a 49-mile, 1,680 MW, 500 kV HVAC transmission line in Nevada.
  • Pending interconnection requests
    • Wyoming: The TWE Project will interconnect to PacifiCorp’s Wyoming 230 kV and 500 kV transmission systems.
    • Utah: The TWE Project will interconnect to the Intermountain Power Agency’s Intermountain Power Project at its 345 kV Switchyard.
    • Nevada: TransWest has pending interconnection requests (500 kV Points of Delivery) including the Crystal (NV Energy), Harry Allen (LS Power/CAISO) and Eldorado (SCE/CAISO) substations.
  • Indicative long-term, firm point-to-point transmission rates:
    • Segment 1 at 1,500 MW
      • WY to IPP – $90-110/kW-year
    • Segment 1 at 1,500 MW and Segment 2 to Crystal at 1,500 MW
      • WY to Crystal – $130-160/kW-year
    • The provision/posting of these indicative rates does not constitute either an offer, offer price, opening minimum or maximum price for transmission capacity. TransWest’s FERC Application outlines the proposed process for determining rates for TWE Project capacity.

TransWest’s proposed open solicitation process

  • If TransWest’s initial capacity allocation process is approved by FERC, TransWest has retained an Independent Solicitation Manager to run the open solicitation process, including managing a TWE Project Open Solicitation website. The link to that website will be added to this page when it is available.
  • After receipt of a FERC order accepting the initial capacity allocation process, the Notice of the Open Solicitation will be broadly publicized, and a link to it will be added to this page when it is available.

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In the news

"A number of peer-reviewed studies have documented that the aggregate output of wind and solar plants spread over a large geographic area is much less variable than the output of plants clustered into a small area. Thus, a more robust grid can significantly reduce the cost of integrating wind and solar power with the grid by allowing larger power flows between regions as well as making it possible to access renewable resources from a greater diversity of areas."

- AWEA/SEIA Green Power Superhighways report, February 2009