A power storage utility has connected to the power grid in Dalian City, northeast China's Liaoning Province, according to the Chinese Academy of Sciences (CAS) on Friday.
With the capacity to meet one day's electricity demand of some 200,000 people, the first phase of Dalian Flow Battery Energy Storage Peak-shaving Power Station is expected to be put into operation in October.
The utility has a storage capacity of 400,000 kWh, and it will be doubled to 800,000 kWh after an extension in the future, according to the CAS.
Based on vanadium flow battery energy storage technology, which is safe, reliable, enduring, recyclable and eco-friendly, the project can store and output power from renewable energies, according to the Dalian Institute of Chemical Physics (DICP) under the CAS, who helped develop the project.
The station works like a reservoir of power. At electricity troughs, the batteries will be charged by renewable energy sources, and at peak-load hours, the chemical energy in them can transform into electricity for use.
"Given the volatile and intermittent generation of clean energy including wind and solar power, this project can increase clean energy utilization and ensure grid stability," said Li Xianfeng, deputy director of the DICP.