Development of Hydrogen Utilization Technology to realize Zero Emission Town and Initiatives in Actual Buildings

Abstract

Shimizu and AIST have jointly developed a hydrogen utilization system that produces hydrogen using surplus electricity from renewable energy, stores it safely in hydrogen storage alloys, and generates heat and power by using fuel cells. The demonstration of the developed system had been carried out by installing the system to a building in the central wholesale market of Koriyama City, for two years. We have evaluated CO² reduction using the system toward the realization of zero energy building. Based on the development results, we have implemented a designed system suitable to the Shimizu’s Hokuriku branch in Kanazawa City, which can store hydrogen of 1,350Nm³ indoors. We are also developing a technology to utilize hydrogen brought in throughout a tentative supply chain. Hydrogen produced at AIST’s renewable energy power plant was compressed and transported to the market to expand the amount of hydrogen used for the realization zero energy building.