https://www.cas.cn/cm/202604/t20260427_5108171.shtml

China’s first one-million-cubic-meter-level salt cavern hydrogen storage demonstration project has been put into operation in Pingdingshan, central Henan Province.

The project was conducted based on the high-quality salt rock resources of a gas storage and salt chemistry company under the China Pingmei Shenma. Its key technological breakthroughs were led by the CAS Institute of Rock and Soil Mechanics, with the participation of China National Petroleum Corporation (CNPC) and China Petrochemical Corporation (Sinopec) in design and construction.

The project aims to create a salt cavern with a water-soluble volume exceeding 30,000 cubic meters and achieve a hydrogen storage capacity of 1.5 million standard cubic meters. At present, the project uses two compressors to inject hydrogen at a pressure of 15 MPa and a rate of 2,000 standard cubic meters per hour.