Rongke Power Completes World’s First Grid-Connected GWh-Scale Vanadium Flow Battery Station in Xinjiang
Date: 29 May 2025 |
Source: Global Flow Battery Energy Storage WeChat, 29 May 2025
The world’s first GWh-scale, fully grid-connected vanadium flow battery energy storage project officially went online on May 28 in Jimsar County, Changji Prefecture, Xinjiang. The 200MW/1GWh vanadium flow battery system, built with the participation of Dalian Rongke Power Co., Ltd., marks a historic milestone — ushering in the GWh era for flow battery technology.
With a maximum energy storage duration of 5 hours, the project sets a new benchmark as Xinjiang’s longest-duration flow battery energy storage facility. A single full charge can store 1 million kilowatt-hours of electricity — sufficient to power approximately 390 households of three people for an entire year.
Located roughly 11km northwest of Jimsar County and 6km northwest of Beiting Town, the site benefits from highly accessible road infrastructure. The advanced energy station includes two major subsystems:
- Station 1: 150MW/750MWh system connected via six 35kV lines to the planned 220kV substation.
- Station 2: 50MW/250MWh system connected via two 35kV lines to a separate 220kV substation.
The project was awarded to a consortium comprising Shanghai Investigation, Design & Research Institute Co., Ltd., China Construction Third Engineering Bureau Group Co., Ltd., and Dalian Rongke Power Co., Ltd. The winning bid totalled ¥1.93 billion (approx. ¥1.929/Wh).
Vanadium flow battery systems are known for their fast grid regulation capabilities, making them ideal for stabilizing intermittent renewable energy sources. By extending storage duration and enhancing peak shaving, the system provides vital support for grid reliability.
As part of a broader strategy to stabilize renewable energy output, Xinjiang continues to lead in the deployment of new energy storage technologies. As of April 2025, the province had installed 10.52GW/34.75GWh of grid-connected new-type storage — a year-on-year increase of 90.2% — placing it at the forefront of national efforts in energy innovation.