A unit of Berkshire Hathaway denied a report on Sunday that it reached an agreement to allow extraction of lithium from its geothermal wells in California, a project that could offer US carmakers and battery producers a secure supply of the metal.
"There is no agreement in place with anybody to allow extraction of lithium or any other minerals from the geothermal wells in California," Jessi Strawn, a spokeswoman for Berkshire Hathaway Energy, which is majority-owned by Warren Buffett’s conglomerate, said in an emailed response to a Reuters query.