Ki 13 (formerly Ki Hydrogen) is a UK-based cleantech company developing an electrochemical process that converts lignocellulosic biomass into separate streams of green hydrogen and biogenic CO₂. These streams serve as feedstocks for synthetic fuels and chemicals, including sustainable aviation fuel (e-SAF), e-methanol, and e-methane. The company aims to reduce the cost and energy intensity of producing these critical feedstocks.