World’s Largest 300MW / 1200MWh Grid-Forming Energy Storage Project Commissioned — Featuring Vanadium Flow Battery Hybrid System
Date: 27 Feb 2026 |
ASIACHEM WeChat, 26 February 2026
The Gushanliang 300MW / 1200MWh grid-forming hybrid energy storage power station in Ordos, Inner Mongolia, supplied by Sineng Electric, has successfully completed full “three-charge, three-discharge” commissioning tests and has officially entered commercial operation.
At the heart of this landmark project is a hybrid energy storage system integrating vanadium flow batteries (VFBs) with lithium iron phosphate (LFP) batteries—demonstrating the growing strategic importance of vanadium flow battery technology in large-scale, grid-support applications.
As the only grid-forming facility within a broader 3GW / 12.8GWh regional storage cluster, the station will provide critical support to grid stability across Inner Mongolia and strengthen the resilience of the regional power system.
Vanadium Flow Batteries Provide Long-Duration Stability
A defining feature of the project is its integration of vanadium flow batteries, which deliver long-duration, stable energy output and enhanced operational flexibility. Unlike conventional battery systems designed primarily for short-duration response, vanadium flow batteries are particularly suited to applications requiring:
- Extended discharge duration
- High operational safety
- Stable performance over long service life
- Flexible scaling of power and capacity
In this hybrid configuration, the vanadium flow battery system forms the long-duration backbone of the station, ensuring sustained energy delivery and supporting multi-hour grid services. The LFP battery component complements this by providing rapid, high-power response. Together, the technologies create a balanced system capable of responding effectively across multiple time scales.
Advanced Grid-Forming Technology Enables Active Grid Support
The station deploys Sineng Electric’s 1250kW centralized grid-forming Energy Storage Power Conversion System (PCS), incorporating second-generation enhanced hybrid grid-forming technology. This enables the power station to shift from passive “grid-following” behavior to becoming an active grid stabilizer.
The PCS platform supports grid-forming, grid-following, and off-grid operational modes. During grid disturbances, the system can provide:
- Millisecond-level rapid power support
- Virtual inertia and damping support
- Suppression of wide-frequency oscillations
- Enhanced frequency and voltage regulation
- Minute-level black start capability under extreme conditions
Combined with the long-duration stability of the vanadium flow battery system, these capabilities significantly enhance grid resilience and reliability.
AI-Enabled Operations Maximize Lifecycle Value
The project also integrates an AI-powered intelligent operations system, enabling optimized energy dispatch across all time scales. By leveraging the complementary strengths of vanadium flow batteries and LFP batteries, the station maximizes operational efficiency, grid-support performance, and long-term economic returns.
A Milestone for Long-Duration, Grid-Forming Storage
As large-scale, dispatchable, grid-forming energy storage transitions from optional to essential infrastructure, the integration of vanadium flow battery technology in this 300MW / 1200MWh project marks a significant advancement for long-duration storage deployment.
Sineng Electric has completed full-chain validation of its grid-forming solutions and continues to play a leading role in advancing industry standards and global applications.
The successful commissioning of this project underscores the expanding role of vanadium flow batteries in enabling stable, flexible, and low-carbon power systems worldwide.