Image: Harbin Electric Corporation
By ESS news
A historic compressed air energy storage (CAES) power plant using two underground salt caves in Yingcheng city, central China’s Hubei province, was successfully connected to the power grid at full capacity on Thursday, marking the official start of the commercial activities were highlighted.
The “Energy Storage No. 1” project uses the caves of an abandoned salt mine, up to a depth of 600 meters, as a gas storage facility. This enables a gas storage volume of almost 700,000 cubic meters, which translates into a power of up to 300 MW per unit and a storage capacity of 1,500 MWh. The system conversion efficiency is about 70%. It can store energy for eight hours and release energy for five hours a day, generating about 500 GWh of electricity annually.
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