Anthro Energy Breaks Ground on 25 GWh Kentucky Battery Materials Plant
Anthro Energy breaks ground on a Louisville electrolyte factory targeting 25 GWh in 2028, enough for 300,000 EVs and US solid-state batteries at scale.
Summary
Anthro Energy broke ground Tuesday, August 18, 2026, on a Louisville, Kentucky, factory scheduled to begin production in 2028. Its 25 gigawatt-hours of electrolyte capacity could supply more than 300,000 electric vehicles, providing US battery makers with domestic material free from Chinese control and foreign entity of concern restrictions. CEO and co-founder David Mackanic told TechCrunch that Louisville sits within a 12-hour drive of 70% of existing US battery production facilities. Anthro, which raised its first round four years ago, received $24.9 million from the Department of Energy under the Bipartisan Infrastructure Law, $18.4 million in Inflation Reduction Act investment tax credits, and $2.3 million in Kentucky tax incentives tied to 110 permanent jobs.
The plant can initially manufacture customers’ formulations, then shift capacity toward Anthro’s Proteus polymer after validation. Designed for existing production lines with minimal changes, Proteus enters cells as a liquid, penetrates the anode and cathode, then solidifies and bonds them, producing cells Mackanic says can be 10 to 15 times stronger than liquid-electrolyte cells and potentially flexible. Anthro says the material could enable solid-state and semi-solid-state batteries with greater energy density, less fire risk from flammable electrolytes, and protection against short-circuiting dendrites, with potential applications in EVs, drones, and robots. Chinese companies reportedly plan solid-state battery trials in 2027, while the industry still lacks cost-effective, durable mass production. Mackanic expects federal support to help Anthro survive the difficult jump from small-scale manufacturing to large-volume output.
Positives
- 25 gigawatt-hours of planned electrolyte capacity could supply materials for more than 300,000 electric vehicles.
- $45.6 million in federal awards and tax credits will support construction, alongside $2.3 million in Kentucky incentives.
- 110 permanent jobs are expected under Anthro Energy’s agreement with Kentucky.
- 70% of existing US battery production facilities are within a 12-hour drive of the Louisville plant.
- Proteus can enter cells as a liquid and later solidify, potentially creating cells 10 to 15 times stronger.
- Existing production lines would require minimal changes to adopt Proteus, according to Anthro Energy.
Risks & concerns
- Production is not scheduled to begin until 2028, while Chinese companies reportedly plan solid-state battery trials in 2027.
- Proteus must still win customer validation before Anthro can dedicate substantial factory capacity to its own polymer.
- No company has yet demonstrated cost-effective manufacturing of durable solid-state cells at scale.
- Battery materials companies frequently fail when moving from small-scale processes to large-volume manufacturing.
- US manufacturers remain exposed to foreign entity of concern restrictions while seeking battery materials without Chinese control.
