World’s largest 100% hydrogen closed-loop plant to rise in China

Construction has begun in Ordos, Inner Mongolia, China, on the world’s largest 100% hydrogen-fired turbine power system, featuring a 30MW turbine integrated into a renewable energy storage and generation setup. This pioneering project combines wind (500MW capacity), solar (5MW off-grid photovoltaic array), hydrogen production via 240MW electrolysers, hydrogen storage, and green ammonia production (150,000 tonnes annually) into a single closed-loop system. Unlike previous hydrogen turbine demonstrations, China’s system will run solely on hydrogen rather than a hydrogen-natural gas blend, marking a global first at this scale. The project aims to establish an “electricity–hydrogen–electricity” closed-loop cycle, converting renewable electricity into hydrogen for storage and later electricity generation during low renewable output periods, thereby stabilizing the grid and addressing intermittency. Developed by Mingyang Hydrogen and Shenzhen Energy, the facility supports Inner Mongolia’s ambition to become a national hydrogen energy demonstration hub and serves as a potential model for