A battery chemistry that served spacecraft is getting a second career on the grid. EnerVenue’s harder invention has been the factory that can make it.
Before a utility builds a transmission line, retires a power plant or bets on hydrogen, it can test the decision inside Energy Exemplar’s model. A PhD side project from Adelaide has become the rehearsal room for consequential energy bets.
Form Energy is an American energy-storage company building iron-air batteries that store electricity for 100 hours - multiple days - at roughly one-tenth the cost of lithium-ion. Founded in 2017 by a group of storage veterans, the company uses 'reversible rusting' of cheap, abundant iron to let renewable grids stay reliable through long stretches of low wind and sun. Its first high-volume factory, Form Factory 1, sits on the site of the former Weirton Steel mill in West Virginia, and its batteries are now being deployed with utilities including Great River Energy, Xcel Energy, Georgia Power and Dominion Energy.