The large-scale CAES uses molten salt and pressurized thermal water storage to achieve high efficiency, with power generated through two 300 MW units. Construction on the project started on 18 December 2024, according to China state-owned news outlet CCTV. Its full name is the Huaneng Jintan Salt Cave. . Once completed, the Jintan project will hold the title of the world's largest compressed air energy storage facility, integrating groundbreaking advancements in both power output and efficiency. The national pilot demonstration project was jointly developed by China National Salt Industry. . China's Huaneng Group has achieved a major milestone in renewable energy innovation with the launch of phase two of its Jintan Salt Cavern Compressed Air Energy Storage (CAES) project in Changzhou, Jiangsu province. facilitating large-scale storage options, 2.
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