Spanning 125 miles, this 500kV transmission line will improve transmission system efficiency and reliability for renewable energy production and storage in Arizona and California.

Why does this project matter?

As we increase our use of clean energy sources to provide safe, reliable power for our communities, this project helps achieve renewable energy standards and carbon reduction goals in one of America’s fastest-growing regions – the Desert Southwest.

What is ESA doing to help?

Working alongside the engineering, procurement, and construction contractor, several tribes and closely with the Bureau of Land Management, ESA is providing archaeological monitoring during construction of the transmission line between electrical substations in Tonopah, Arizona and Blythe, California. The project is a national priority energy infrastructure project listed on the Fast-41 Permitting Dashboard. The construction monitoring is being conducted as a condition of the BLM’s National Historic Preservation Act, Section 106 Programmatic Agreement and the California Public Utilities Commission requirements for the project.

ESA staff on site providing archaeological monitoring services for the Ten West project

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“The Ten West Link Transmission Line will stretch from Arizona to California. It will deliver electricity from wind and solar farms out here in the desert to big cities like Phoenix and Los Angeles and San Diego, and to rural communities like Blythe and Quartzsite. This electricity will be clean electricity. When we invest in climate, we build a safer, cleaner, healthier, more just, and prosperous country.”

Kamala Harris , Vice President of the United States


Location Southwest United States


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