Green Earth Institute Co., Ltd. is a holding company that engages in bio refinery business. It specializes in technology development of green products from non-food biomass by using biorefinery technologies. It produces bio fuels, such as cellulosic ethanol and biobutanol; and green chemicals including amino acids, organic acids, and aromatics. The company was founded by Hideaki Yukawa on September 1, 2011 and is headquartered in Tokyo, Japan.