• 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. Under development since 2005, the transmission line is anticipated to begin construction in 2014.
Transmission Line Map

The dotted line indicates the approximate route of the proposed transmission line project. The final route may vary. 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 capacity
  • 600 kV HVDC
  • 725-mile proposed route
  • 3-year construction creating 1,000+ jobs each year
  • $3B estimated cost

Project updates


EIS websites

BLM and Western are joint lead agencies preparing an Environmental Impact Statement for the TWE Project. Each federal agency has an EIS-related site:


Stay informed

E-mail UpdatesJoin TransWest's email list to receive periodic updates and meeting notifications.

TwitterFollow us on Twitter.


Federal focus

green star

Federal "Rapid Response Team for Transmission" selects TWE Project
See RRTT project milestones


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