Quino Energy

Founded in 2026, Quino Energy is a private company headquartered in San Leandro, United States with approximately 11-50 employees specializing in Energy Storage.

Quino Energy is developing water-based organic redox flow batteries for grid-scale and commercial energy storage applications. The company's technology uses quinone molecules—cheap organic compounds derived from abundant coal tar chemicals—as battery reactants. Key innovations include recovery of degraded quinones through mild oxidation, operation without inert gas protection, and in situ synthesis of high-performance quinones with zero chemical waste. The technology is designed for 8-24 hour energy storage durations, where flow batteries offer cost advantages over lithium-ion systems. Founded by Harvard researchers, the company combines water-soluble quinone chemistry with advanced electrolyte management to achieve long cycle life and improved safety.