• Scoping meetings
  • Scoping meetings
  • Scoping meetings
  • Scoping meetings
  • Routes map

Delivering Wyoming wind energy to the West

The TransWest Express Transmission Project is a high-voltage, direct current regional electric transmission system proposed by TransWest Express LLC. The TWE Project will reliably deliver cost-effective renewable energy produced in Wyoming to the Desert Southwest region (California, Nevada, Arizona), ultimately helping contribute to a cleaner world, strengthen the electric grid, and provide much-needed electricity to millions of homes and businesses every year. For example, Wyoming’s high-capacity wind energy resources complement California’s renewables, providing geographic diversity that helps Californians not only save money but also achieve GHG emissions reduction goals. The TWE Project has been under development since 2005.
Transmission Line Map

The dotted line indicates the approximate route of this bidirectional transmission line project, from the Marketplace Hub in Nevada to south-central Wyoming, with a potential future terminal near Delta, Utah. The TWE Project aligns with regional transmission development objectives set forth in an April 2005 Memorandum of Understanding signed by the governors of Wyoming, Utah, Nevada and California.

By the numbers

  • 3,000 MW transmission capacity
  • 600 kV HVDC
  • 730-mile route
  • 3-year construction creating 1,000+ jobs each year
  • $3B estimated cost

Project updates

EIS websites

BLM and WAPA are joint lead agencies that prepared an Environmental Impact Statement for the TWE Project. USFS was a cooperating agency. Each federal agency has an EIS-related site:

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Federal focus

green star

Federal "Rapid Response Team for Transmission" selects TWE Project
See Permitting Dashboard page

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