Wontai New Vanadium Electrolyte Supports Successful Commissioning of 200MW/800MWh Kofei Energy Storage Station in Qinghai
Date: 23 May 2025 |
Source: Global Flow Battery Energy Storage WeChat, 21 May 2025
Wontai New Vanadium Materials (Gansu) Co., Ltd. (“Wontai New Vanadium”) has successfully supplied vanadium flow battery electrolyte for the newly commissioned 200MW/800MWh Kofei Energy Storage Station, part of the 1 GW wind-solar-storage integrated project developed by China Energy Investment Corporation’s Qinghai branch in Dachaidan, Qinghai Province.
Officially put into operation on 16 May, the Kofei station is currently China’s most technologically diverse integrated energy storage facility. It incorporates eight mainstream electrochemical storage technologies, including vanadium flow batteries (VFBs), centralized and high-voltage direct lithium iron phosphate batteries, sodium-ion batteries, and others.
As a key supplier, Wontai New Vanadium provided high-performance electrolyte specifically formulated for VFB systems. Known for its intrinsic safety, long cycle life, deep charge-discharge capability, and environmental friendliness, VFB technology is particularly well-suited for large-scale, long-duration energy storage. Wontai’s electrolyte demonstrated exceptional performance in impurity control, energy capacity, and stability across wide temperature ranges. Notably, impurity levels significantly exceeded national Tier 1 standards, ensuring system stability and reliability for up to 25 years.
With over 15,000 cubic meters of electrolyte contracted and more than 4,000 cubic meters successfully delivered by the end of 2024, Wontai’s products are gaining continued market trust. The company, headquartered in Jiuquan, Gansu, operates the largest vanadium electrolyte production facility in Northwest China, with an annual capacity of 20,000 cubic meters. It remains at the forefront of electrolyte innovation, offering 1.6–1.8 mol/L sulfuric acid-based formulations tailored to meet evolving project needs.
The success of the Kofei Energy Storage Station represents a major advancement in China’s energy storage landscape. It not only enhances grid flexibility through peak shaving and frequency regulation but also serves as a research hub to test and validate various storage technologies. The project strengthens the role of clean energy in Qinghai and contributes to China’s national goals of building a clean, low-carbon, safe, and efficient energy system.