China’s Giant Leap in Compressed Air Energy Storage - Cozzy Energy Solutions A newly operational compressed air energy storage facility in Jiangsu province, China, represents the world’s largest of its kind. The Guoxin Suyan Huai’an Salt Cavern Compressed Air Energy Storage Power Generation Project has an installed power generation capacity of 600 megawatts (MW) and a storage capacity of 2.4 gigawatt-hours (GWh), enabling four hours of energy