Tesla's Lithium Supply - Update Another Randy Carlson article. Summary Recent political activity in Nevada's Legislature suggests the State is about to double down on electric cars, batteries and lithium mining. Pure Energy Minerals proposes a solvent extraction process to win high purity lithium compounds from Nevada's Silver Peak brine deposits. Other Nevada miners look to supply lithium also. Strongly conservative Nevada Assemblyman and liberal State Senator are urging new tax incentives aimed at bringing lithium refining to Tesla's backyard.