Installation work has started on a compressed air energy storage project in Jiangsu, China, claimed to be the largest in the world of its kind. Its full name is the Huaneng Jintan Salt Cave. . HUAI'AN, China — China activated the world's largest compressed-air energy storage facility on January 26, 2026, in Jiangsu province, with capacity to supply electricity to approximately 600,000 households annually, according to Harbin Electric Corporation, which participated in the project's. . China has made breakthroughs on compressed air energy storage, as the world's largest of such power station has achieved its first grid connection and power generation in China's Shandong province. The power plant can generate more than 132. .
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