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Business & Finance

GM shakes up lithium industry with California geothermal project

  • The deal, announced on Friday, comes as automakers around the world scramble for access to lithium and other electric vehicle (EV) metals as internal combustion engines are phased out.
Published July 2, 2021

General Motors Co is investing in a US lithium project that could become the country's largest by 2024, making the automaker one of the first to develop its own source of a battery metal crucial for the electrification of cars and trucks.

The deal, announced on Friday, comes as automakers around the world scramble for access to lithium and other electric vehicle (EV) metals as internal combustion engines are phased out.

Detroit-based GM said it will make a "multimillion-dollar investment" in and help develop Controlled Thermal Resources (CTR) Ltd's Hell's Kitchen geothermal brine project near California's Salton Sea, roughly 160 miles (258 km) southeast of Los Angeles.

"This will supply a sizeable amount of our lithium needs," said Tim Grewe, GM's director of electrification strategy.

The company declined to be more specific on its investment amount, but said the project's lithium will be used to build EVs in the United States and that GM engineers and scientists will visit the site once pandemic-related travel restrictions end.

While other automakers, including China's Great Wall Motor Co and BYD, have invested in lithium producers before, none appear to have taken such an aggressive step to be part of the production process, as GM is taking with CTR.

The move could spark other automakers to follow suit with similar partnerships, especially as demand for the metal is expected to outstrip supply by 20% within four years, according to industry consultant Benchmark Mineral Intelligence.

The Hell's Kitchen project could be producing 60,000 tonnes of lithium - enough to make roughly 6 million EVs, depending on design - by mid-2024 if all goes as planned, said Rod Colwell, CTR's chief executive. The company expects to obtain federal environmental permits by the end of next year.

That output would make CTR's Hell's Kitchen the largest US producer of the white metal, with production roughly twice as much planned by a rival Nevada project from Lithium Americas Corp.

"There's a great window of opportunity here to develop more lithium in the United States," Colwell said.

The announcement comes two weeks after GM boosted its electric and autonomous vehicles budget by 75% to $35 billion.

The geothermal process involves extracting super-hot lithium-rich brine from reservoirs 8,000 feet (2.4 km) underground and using the heat to produce electricity, after which lithium is extracted from the brine.

The brine is then reinjected into the earth, making the process more sustainable than open-pit mines and brine evaporation ponds, the two most-common existing methods to produce the white metal.

Warren Buffett's Berkshire Hathaway Inc operates geothermal power plants at the Salton Sea and has in the past studied ways to produce lithium there. The Salton area is estimated to contain more than 15 million tonnes of lithium, according to the US Geological Survey.

CTR, which received California state funding last year, said its project will emit 15 times less carbon dioxide than lithium mines in Australia, the world's largest producer.

GM is also talking with other US lithium companies for supply, including those who plan to produce the metal from clay, brine and other geological sources, Grewe said.

The announcement comes the day after US President Joe Biden promoted a video on his Twitter feed featuring US Energy Secretary Jennifer Granholm and White House National Climate Advisor Gina McCarthy driving in a GM-produced electric Chevy Bolt.

GM said there was no connection between the tweet and Friday's announcement.

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