Yunnan's Massive VRFB Industrial Cluster Takes Shape in China
The southwestern Chinese province of Yunnan is rapidly advancing one of the world's most ambitious long-duration energy storage (LDES) initiatives. Chuxiong Prefecture is currently developing a comprehensive vanadium redox flow battery (VRFB) industrial cluster, headlined by a massive 300-megawatt (MW) and 1200-megawatt-hour (MWh) project located in Yongren County. This strategic development aims to secure regional grid stability while establishing a dominant domestic supply chain for advanced flow battery technologies.
Giant 300MW/1200MWh Project Nears Grid Connection
The Yongren project represents the largest under-construction VRFB facility in China, featuring a four-hour discharge duration and a total investment of 3.382 billion yuan. Over a 25-year operational lifecycle, the station is designed to charge 720 million kilowatt-hours annually and discharge 504 million kilowatt-hours to the grid. As of mid-October, electrolyte pouring has reached 48.54% completion. Project managers expect the entire pouring and joint debugging process to finish by the end of October, paving the way for full grid connection by the end of 2026. This milestone will significantly boost the region's capacity to absorb renewable energy fluctuations.
Building a Comprehensive Supply Chain
Beyond standalone power stations, Chuxiong is strategically constructing a full-scale VRFB supply chain to eliminate upstream bottlenecks and reduce costs. In neighboring Lufeng City, a production line capable of manufacturing 5,000 cubic meters of vanadium electrolyte annually is currently under construction to secure core materials. Meanwhile, Shuangbai County has officially launched a 200MW/800MWh grid-forming VRFB project, further expanding the regional footprint.
By integrating Lufeng's electrolyte supply, Yongren's system integration, and Yuanmou's equipment manufacturing, the region is forming a highly synergistic industrial layout aimed at becoming China's largest and most efficient VRFB cluster.
This coordinated approach, led by Jinjiang Energy Group in partnership with industry giants like Shanghai Electric, Sichuan Weili De, and Zhejiang Juheshun, underscores China's aggressive push to commercialize long-duration flow batteries. The integrated ecosystem will not only support local mega-projects but also position the region as a critical hub for global LDES manufacturing and technology export.
This article was assisted by AI analysis. Please refer to the original source for official information.