A test facility for synthesizing methane from CO2 and hydrogen was completed on the Koshijihara plant site of Nagaoka Mine in Niigata Prefecture. Tests and continuous operation will be conducted through the end of 2019. In this test facility, methane is produced by synthesizing CO2 produced during natural gas production at the Koshijihara Plant and hydrogen produced by water electrolysis by Kokusai Oil Development Teishi Co.
NEDO news release, October 16, 2019
Hitachi Zosen builds CO2-to-methane (methanation) test facility