• 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:


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Federal focus

green star

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


In the news

"A robust transmission grid provides consumers with access to lower-cost electricity. On a severely constrained transmission grid… consumers are forced to rely on local power plants even though plants in other regions can produce power more efficiently and at lower cost."

- AWEA/SEIA Green Power Superhighways report, February 2009