E-Fuel Energy Launches China’s First 100MW High-Power-Density Flow Battery Stack Automated Production Line to Advance Vanadium Flow Battery Industrialisation
Date: 16 Mar 2026 |
Source: ASIACHEM WeChat, 12 March 2026
A major step forward in the commercialization of vanadium flow battery (VFB) technology has been achieved with the launch of a 100MW high-power-density flow battery stack automated production line by E-Fuel Energy Technology (Guangdong) Co., Ltd. at the Nanping Technology Industrial Park in Zhuhai.
The new facility represents China’s first hundred-megawatt-scale automated production line specifically designed for high-power-density vanadium flow battery stacks, marking an important milestone in scaling up manufacturing capacity for long-duration energy storage technologies.
Vanadium flow batteries are increasingly recognized as a critical technology for safe, long-life and sustainable grid-scale energy storage, supporting the transition toward renewable energy systems and net-zero power grids.
The new production line integrates a series of automated manufacturing processes including automated stack assembly, compression fastening, stack inversion inspection, and airtightness testing. Automation improves both manufacturing efficiency and stack consistency, supporting large-scale deployment of vanadium flow battery systems.
The facility has a designed annual production capacity of 100 MW of flow battery stacks and is expected to generate approximately RMB 300 million in annual industrial output, while supporting an estimated RMB 800 million in downstream energy storage system deployment.
Such manufacturing capacity expansion is an important step in reducing costs and enabling the broader adoption of vanadium flow batteries in long-duration energy storage (LDES) applications.
E-Fuel Energy has focused on improving the power density of vanadium flow battery stacks, a key pathway to reducing system cost and improving competitiveness.
The company’s stacks operate at a current density of up to 400 mA/cm², placing them among the highest-performance designs currently reported in the industry.
According to the company’s General Manager Zhang Cheng, higher power density significantly reduces the amount of key materials—such as ion-exchange membranes—required to achieve the same storage capacity, lowering both capital costs and system integration costs.
E-Fuel Energy recently introduced its Generation 2.5 stack, which offers further size reduction and 30–40% cost savings compared with typical products of similar specifications.
The company is also working to improve vanadium electrolyte utilisation, targeting an increase from the current industry range of 60–70% to approximately 85%, which would further reduce system costs by lowering vanadium consumption per unit of energy storage capacity.
Beyond manufacturing, E-Fuel Energy has demonstrated the practical deployment of its technology through a 1 MW / 5 MWh vanadium flow battery energy storage demonstration project, which has been successfully connected to the grid at one of the world’s largest independent energy storage power stations.
The system operates under grid dispatch and has maintained stable performance under challenging environmental conditions including wide temperature ranges, sandstorms, rain and snow, demonstrating the robustness of vanadium flow battery technology for real-world applications.
While lithium-ion batteries currently dominate the energy storage market, vanadium flow batteries are emerging as a leading alternative technology for long-duration storage applications requiring high safety, long lifetime and deep cycling capability.
Industry projections suggest that flow batteries could eventually account for around 30% of the global energy storage market as the world moves toward carbon neutrality.
With continued advances in stack design, electrolyte utilisation and automated manufacturing, vanadium flow batteries are rapidly improving their cost competitiveness and scalability.
The commissioning of E-Fuel Energy’s new automated production line represents an important milestone in the industrialisation of vanadium flow battery technology, helping accelerate the deployment of reliable long-duration energy storage solutions needed to support the global energy transition.