Anthro Energy broke ground on Tuesday for a 25-gigawatt-hour electrolyte factory in Louisville, Kentucky, designed to produce materials for more than 300,000 electric vehicles annually. The facility, slated to begin operations in 2028, targets a critical gap in the U.S. battery supply chain by offering electrolytes free of foreign entity concerns tied to Chinese manufacturers.
The startup secured $24.9 million from the Department of Energy and $18.4 million in tax credits under the Inflation Reduction Act to fund construction, with Kentucky adding $2.3 million in incentives for 110 permanent jobs. Anthro’s electrolytes are initially compatible with existing production lines, allowing customers to validate the material before shifting to the company’s polymer product, Proteus, which supports solid- and semi-solid-state batteries.
Proteus strengthens cells by up to 15 times compared to liquid electrolytes and can be manufactured flexibly, with applications extending beyond EVs to drones and robots. CEO David Mackanic emphasized the factory’s role in overcoming scale-up challenges, noting federal funding helps bridge the “valley of death” between small-scale prototypes and large production. Solid-state batteries promise higher energy density and fire safety but have struggled with cost-effective manufacturing—an issue Anthro aims to address.
