Solid Power to build the largest solid-state battery factory in the U.S

Doug Campbell wants to do a solid for the auto industry — a solid-state battery, that is. The gizmo could make electric vehicles less expensive and go farther on a single charge.

Campbell’s company, Solid Power, is building in Louisville the largest solid-state battery factory in the U.S. after raising $20 million in September in its first round of venture-capital financing.

Though the nation’s biggest solid-state production facility, its 12-megawatt-hour capacity is relatively small. Elon Musk’s Tesla battery factory in Sparks, Nevada, has a 1,000-MWh capacity, making it a so-called gigafactory.

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