Form Energy

Developing low-cost, multi-day energy storage using rechargeable iron-air batteries capable of delivering electricity for 100 hours at less than 1/10th the cost of lithium-ion. The batteries work by reversibly rusting and de-rusting iron using water and air. Manufacturing at Form Factory 1 in Weirton, West Virginia (550,000 sq ft). Signed $1B deal with Google for 300MW/30GWh system powering its Minnesota data center. Planning IPO in 2027.