Preliminary feasibility study for on-site hydrogen station with distributed CO₂ capture and storage system

It is important to produce Carbon-Free Hydrogen for FCV. Current Japanese situation, it is difficult to fully supply the Carbon Free Hydrogen is generated by water-electrolysis (WER) using renewable energy. This study presents the Steam reforming for natural gas (NSR) with decentralized CCS system for producing Carbon-Free Hydrogen. The CCS cost is covered by the differential cost between WER and NSR Hydrogen production cost. Our preliminary investigation suggests the differential cost between WER and NSR Hydrogen enough to cover the cost of decentralized CCS (under 1000 ton-CO₂/y). We also analyze the feasibility of Mother-Daughter type of Hydrogen supplement system with decentralized CCS. In this case, NSR with CCS system has advantage against WER Hydrogen production systems. These investigations clearly indicate the high potential of NSR with CCS system but it is carefully discussion about CO₂ behavior in the reservoir by well-established and newly developing methods for safety.