China's 792M kWh compressed air energy station now operational

6 hours ago

The world's largest compressed air energy storage (CAES) station is now fully operational in China's Jiangsu Province.
The Huai’an Salt Cavern CAES project has a total installed capacity of 600 MW and storage capacity of 2,400 MWh with approximately 71% conversion efficiency.
Unit 2 of the project successfully achieved grid connection and full-load power generation, supporting China’s new-type power system development.
The project utilizes abandoned salt mine caverns (1,150–1,500 meters deep) as gas storage, creating a 'super power bank.'
The system employs non-supplementary combustion high-temperature adiabatic compression technology, eliminating fossil fuel use and reducing CO₂ emissions.
Once fully operational, the station will generate 792 million kWh annually, powering around 600,000 households and saving 250,000 tons of coal yearly.
CAES in salt caverns helps address renewable energy volatility by storing compressed air during low demand and releasing it during peak times.
Shanghai Electric supplied core equipment, including turbines, generators, and molten salt storage tanks.

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