Taiheiyo Cement is developing a new Oxyfuel version in Japan for carbon capturing and later storage or producing synthetic methane. The project is part of the NEDO (New Energy and Industrial Technology Development Organization) Green Innovation (GI) Fund project. The ‘C2SP kiln’ (illustration) can directly capture CO2 with compact equipment by increasing the CO2 concentration in the calciner exhaust gas, using a mixture of oxygen and CO2 instead of the usual air as the combustion gas for the calciner. In March 2024 a demonstration test facility was completed in Sanyo Onoda City, Yamaguchi Prefecture. The next development step is underway at the DC cement plant.