Anthro Energy develops and manufactures advanced polymer electrolytes, including the Proteus™ platform, for next-generation lithium-ion batteries. Spun out of Stanford University, the company is headquartered in Alameda, California, and supplies electrolytes that improve battery energy density, safety, and mechanical stability for electric vehicles, consumer electronics, defense, and wearable applications. It operates a facility in Alameda and is building a manufacturing plant in Kentucky.