Geothermal energy has long been the forgotten member of the clean energy family, overshadowed by relatively cheap solar and wind power, despite its proven potential. But that may soon change – for an unexpected reason. Geothermal technologies are on the verge of unlocking vast quantities of lithium from naturally occurring hot brines beneath places like California’s Salton Sea, a two-hour drive from San Diego. Lithium is essential for lithium-ion batteries, which power electric vehicles and energy storage. Demand for these batteries is quickly rising, but the U.S. is currently heavily reliant on lithium imports from other countries – most of…
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