Yunnan’s 100MW/400MWh Vanadium Flow Battery Energy Storage Project Successfully Connected to the Grid
Date: 09 Aug 2025 |
Source: ASIACHEM Energy Storage WeChat，4 August 2025
Jinjiang Energy Development (Lufeng) Co., Ltd. today announced the successful first grid connection of its 100MW/400MWh vanadium flow battery long-duration energy storage project in Lufeng City. This achievement marks a significant milestone for the company, showcasing its capability to independently procure, construct, and commission large-scale vanadium flow battery systems. As Yunnan Province’s first long-duration vanadium flow energy storage facility, the project will play a pivotal role in supporting China’s “dual carbon” goals, enhancing the regional power grid’s stability, and advancing the southwest’s new energy industry chain.
Breaking New Ground with Innovation
From the outset, the project aimed to overcome complex technical barriers. While vanadium flow batteries are valued for their high safety and long service life, the design and construction of the booster station and transmission lines were new challenges for the company.
Through an innovative modular construction approach, the project team achieved GIS equipment installation precision within 0.5 mm and solved high-altitude engineering issues such as insulation and lightning protection. These efforts resulted in “zero-defect” acceptance by power quality inspectors and the smooth commissioning of the booster station.
Despite tight timelines, challenging terrain, and long equipment lead times, the project achieved remarkable results:
- 12 days to complete 25,110 meters of prestressed pipe pile installation – averaging more than 2,000 meters per day.
- 60 days from design to commissioning of main transformers and GIS equipment, coordinating with up to 12 suppliers simultaneously at peak times.
- 28 days to build the company’s first 220kV, 8.6 km transmission line, including tower erection on slopes over 60 degrees.
Race Against Time to Achieve Grid Connection
On July 22 at 21:58, the grid connection operation commenced under a detailed schedule of 127 precise steps. After 19 hours of coordinated effort, the 220kV booster station was fully energized and connected at 16:38 on July 23. The moment of success was met with applause and celebration on site.