Huadian (Haixi) New Energy Co., a subsidiary of China Huadian Group, has successfully completed the full-capacity grid connection of the Togdjog Shared Energy Storage Station in a cold, high-altitude region of China. This milestone marks the start of operations for China’s largest electrochemical storage facility.
The project in Delingha, Haixi Prefecture, Qinghai Province, is located at an altitude of more than 3,000 meters. The project has a capacity of 270 MW and a total storage capacity of 1,080 MWh. It is divided into eight storage rooms and 56 storage rooms. When fully operational, it is expected to deliver approximately 300 GWh of clean energy annually.
The facility features prefabricated lithium iron phosphate (LiFePO4) outdoor battery storage systems supplied by Chinese storage systems supplier Sungrow. The company has installed 51 units of its Power Titan liquid-cooled storage systems. In addition, an experimental zinc-bromine battery storage system has been installed, although its capacity has not yet been specified.
Zinc-bromine flow batteries, a more mature technology in the flow battery category, offer an energy density three to five times greater than lead-acid batteries and represent 10-20% of the cost of lithium-based storage batteries. The installation aims to test the performance of high-altitude, large-scale zinc-bromine battery storage systems for wind-solar energy storage.
The new Togdjog Shared Energy Storage Station will add to Huadian’s 1 GW solar storage project base and 3 MW hydrogen production project in Delingha, making it not only the largest electrochemical storage project in China, but also the largest smart shared energy storage station built and operational. in cold and high altitude areas.
