(Reuters) - Warren Buffett's Berkshire Hathaway Inc
The venture has been in talks to supply Tesla Inc
Berkshire Hathaway's geothermal wells could produce up to 90,000 tonnes of lithium a year worth $1.5 billion at current prices, the report said, citing a fundraising document.
"We see a lot of interest in getting North American supply as automakers start to get further into electric vehicles," the FT quoted Eric Besseling, a vice president at BHE Renewables, as saying.
Berkshire Hathaway Energy Co and Tesla did not immediately respond to a request for comment outside normal business hours.
(Reporting by Shubham Kalia in Bengaluru; Editing by Lisa Shumaker)