Critical grid infrastructure to connect the West
By the numbers
- 732 miles of high-voltage transmission infrastructure consisting of two systems: a 3,000 MW direct current (DC) segment with terminals near Sinclair, Wyo., and Delta, Utah; and a 1,500 MW alternating current (AC) segment from the Utah terminal to southern Nevada.
- $3 billion estimated cost
- Three planning regions in the WECC connected by this interregional system
- Sept. 21, 2023: TWE Project construction activity begins in Wyoming
- June 30, 2023: Smiles, support surround TWE Project groundbreaking
- June 20, 2023: TransWest Express Transmission Project celebrates construction phase with Cabinet Secretaries and groundbreaking in Wyoming
- June 5, 2023: TransWest Express chooses Barnard Wilson Joint Venture as transmission line construction partner
- April 11, 2023: Interior Department issues the Notice to Proceed for the TransWest Express Transmission Project
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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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