Critical grid infrastructure to connect the West

The dotted line indicates the approximate route of this transmission line project, from the Marketplace Hub in Nevada to south-central Wyoming, with a 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
- 732 miles of high-voltage transmission infrastructure consisting of two systems: a 500kV direct current (DC) system with terminals near Sinclair, Wyo., and Delta, Utah; and a 500kV alternating current (AC) system from the Utah terminal to southern Nevada.
- $3 billion estimated cost
- DC system terminals to be phased over time from 1,500 MW to 3,000 MW of transmission capacity
Project updates
- July 25, 2022: TransWest Express Transmission Project submits application to join California ISO balancing authority
- March 16, 2022: Initial transmission capacity allocation process is complete
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

Federal "Rapid Response Team for Transmission" selects TWE Project
• See Permitting Dashboard page
In the news
"To accelerate the creation of a clean energy economy, we will double our capacity to generate alternative sources of energy like wind, solar and biofuels over the next three years. We'll begin to build a new electricity grid that lay down more than 3,000 miles of transmission lines to convey this new energy from coast to coast."
- President Barack Obama, weekly address, Jan. 24, 2009