Idemitsu Kosan Co.,Ltd., ENEOS Corporation, Toyota Motor Corporation, and Mitsubishi Heavy Industries, Ltd. announce that they have commenced a study toward the introduction and spread of carbon-neutral fuels that contribute to the decarbonization of automobiles with the aim of realizing a carbon-neutral society. Seeking to introduce carbon-neutral fuels in Japan around 2030, the four companies fulfilling major roles respectively in supply, technology, and demand will jointly embark on this study.