Abstract
SOEC methanation technology can produce e-methane with extremely high energy conversion efficiency from non-fossil electricity using water and CO2 as raw materials. Since the amount of electricity required, which accounts for a large portion of the production cost, is the lowest among various green fuels, it is expected to be an innovative technology with high potential for cost reduction. This paper describes the outline, features, our efforts, and future development of innovative SOEC methanation technology that enables low-cost production of e-methane (synthetic methane), a non-fossil fuel that is carbon neutral like biomass, etc., the advantages of e-methane as an overseas renewable energy power import carrier, and the significance and potential of the e-methane power generation.
