Associated Press - Elliot Spagat

Excerpt:

Rod Colwell, chief executive of Controlled Thermal Resources Ltd., oversees construction of what would be the region’s first geothermal power plant in nearly a decade. General Motors Corp. said it invested in the project as it seeks to eliminate tailpipe emissions from light-duty vehicles by 2035.

The lake’s southern shores are dotted with small, volcano-like pots of bubbling mud caused by geothermal activity. In 2011, Colwell walked about a mile in the Salton Sea’s knee-deep water — all of it now evaporated, with a fine powder below a white, cracked crust.

Lakebed is considered an ideal spot for lithium. The company says it plans to drill down 8000 feet (2,438 meters) for super-hot liquid.

“There is no brine resource like this anywhere on the planet,” said Colwell, who relied on years of extensive, publicly available reports analyzing the area’s soil.

He said the $520 million plant will start producing lithium in 2024.

Owners of 11 existing geothermal plants around the lake’s southern shores are retooling for lithium and possibly other brine minerals instead of building from scratch. Warren Buffett’s Berkshire Hathaway Energy Co. has state and federal grants for lithium demonstration projects and says it could begin construction for commercial operations in 2024.

EnergySource LLC opened its geothermal plant in 2012 and its sister company, EnergySource Minerals, has extracted lithium there on a small scale since 2016, said Derek Benson, chief operating officer. It plans to start building a $500 million addition for mineral extraction by the end of March.

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