China’s Largest Vanadium Flow Battery Energy Storage Power Station Enters Commercial Operation Ahead of Schedule
Date: 23 Jun 2026 |
China's Largest Vanadium Flow Battery Energy Storage Power Station Enters Commercial Operation Ahead of Schedule
Source: ASIACHEM, 23 June 2026
The Three Gorges Group's Jimsar 1 GW photovoltaic plus vanadium flow battery (VFB) energy storage integrated project in Xinjiang has officially entered commercial operation approximately one month ahead of schedule, marking a major milestone in the deployment of large-scale, long-duration energy storage technology in China.
The Jimsar vanadium flow battery energy storage station, located in Jimsar County, Changji Hui Autonomous Prefecture, Xinjiang, is currently the largest project of its kind in China. The successful transition to commercial operation provides strong evidence of the technical and commercial viability of large-scale vanadium flow battery technology and represents an important step in supporting China's transition toward a new power system dominated by renewable energy sources.
The energy storage facility has a rated power capacity of 200 MW and an energy storage capacity of 1,000 MWh (1 GWh). As one of the most promising long-duration energy storage technologies available today, vanadium flow batteries store and release energy through reversible electrochemical reactions involving vanadium ions in different oxidation states. The technology offers several advantages, including enhanced safety, long cycle life, and flexible scalability.
According to Deng Fubin, Project Manager of the Jimsar Vanadium Flow Battery Solar-Storage Integrated Project, the accelerated commissioning schedule is expected to deliver approximately 130 million kWh of additional electricity generation compared with the original plan. Once fully operational, the project is expected to generate approximately 1.72 billion kWh of electricity annually, saving around 519,000 tonnes of standard coal and reducing carbon dioxide emissions by approximately 1.424 million tonnes each year.
"Going forward, we will comprehensively review and summarize the technical experience gained during the commissioning process, continue optimizing operating parameters, and enhance operational efficiency to maximize the value of the energy storage station," said Deng. "The knowledge gained from this project will provide valuable experience for future large-scale vanadium flow battery projects in China and internationally."
The successful commercial operation of the Jimsar project further strengthens the role of vanadium flow battery technology in supporting renewable energy integration, grid stability, and long-duration energy storage applications, while contributing to China's carbon reduction and energy transition objectives.