Anthro Energy Breaks Ground in Kentucky on First US Large-Scale Electrolyte Plant for 25 GWh

Anthro Energy broke ground on August 18 in Louisville, Kentucky, on the first large-scale US lithium battery electrolyte plant, backed by the US Department of Energy (DOE). The facility, valued at more than $40 million, will produce enough electrolyte for 25 gigawatt-hours (GWh) of batteries per year.

Electrolyte is the material that transports lithium ions between electrodes during charging and discharging; most lithium-ion batteries use a flammable liquid electrolyte. Anthro's Proteus platform is injected as a liquid using standard manufacturing equipment and converts into a solid or semi-solid polymer during the cell formation process, reducing the risk of fire, short circuit, and swelling. The plant will produce approximately 12,000 metric tons of electrolyte per year and create 110 permanent jobs and approximately 390 construction jobs, according to the Kentucky government. The project combines $24.9 million from the DOE under the Bipartisan Infrastructure Law and $18.4 million in tax credits from the 48C program.

For the region, the figure matters because electrolyte is a critical input for storage growing on both sides of the energy bridge: battery energy storage systems (BESS) in Texas and storage projects ramping up in Mexico and South America depend on lithium-ion batteries. Electrek estimates that annual production is equivalent to the batteries for 6.25 GW of four-hour storage projects. The plant will use Foreign Entity of Concern (FEOC)-restriction-free inputs from day one and is located within a 12-hour drive of 70% of US battery plants, according to TechCrunch. David Mackanic, co-founder and CEO of Anthro, stated that the goal is to supply domestic customers with a supply source free of FEOC restrictions.

Production is scheduled to begin in late 2027. The key question to watch is whether battery manufacturers validate the polymer electrolyte in their existing lines and the pace at which this input reaches storage projects in Texas (ERCOT) and Latin America.

This article was written with artificial intelligence assistance from verified sources and reviewed by a human editor before publication.