Top Flow Battery Companies

The global flow battery market is driven by several factors, chiefly the increasing need for dependable, large-scale energy storage solutions to meet the rapidly growing renewable generation from sources such as solar and wind. Since renewable generation is inherently variable, flow batteries encase an excellent solution for creating and storing surplus energy during times of abundant generation and dispatching it when demand is high, allowing for grid reliability and energy management. Some advantages of flow batteries include long duration energy storage, high efficiency, usability at scale, and the ability to decouple power and energy capacity, all of which are suited to utility-scale and commercial applications.

Industry Overview

According to SkyQuest Technology “Flow Battery Market By Battery Type (Redox, Hybrid), By Material (Vanadium, Zinc Bromine), By Ownership (Customer owned, Third-party owned), By Storage (Small-scale, Large-scale), By Application (Utilities, Commercial & Industrial), By Region - Industry Forecast 2025-2032,” Global Flow Battery Market is projected to grow at a CAGR of over 21.51% by 2032, on account of urgent need for automating quantified data. The flow battery market is expanding due to increasing investment into smart grids, microgrids, and energy storage infrastructure through both government funding and private players. Government policies and incentives to mitigate carbon emissions and incentivize renewable energy integration are also extending the adoption of flow batteries. Flow batteries are also seen as somewhat superior to lithium-ion batteries, as they offer long life cycles with low degradation, as well as higher environmental sustainability for applications needing high energy throughput.

Top 10 Global Flow Battery Companies

1. VRB Energy

VRB Energy is a global leader in vanadium redox flow battery (VRFB) technology, committed to the mission of facilitating a clean energy future. The company has developed highly reliable VRFBs with over 1,000,000 hours of proven operating history.

2. ESS Tech, Inc.

ESS Tech, Inc. is a top-tier manufacturer of long-duration iron flow energy storage solutions. Founded in 2011, the company designs, builds, and deploys environmentally sustainable, low-cost iron flow batteries for use in commercial and utility-scale energy storage applications. ESS Tech’s mission is to help speed up decarbonization in a safe and sustainable manner utilizing readily available materials such as iron, salt and water.

3. Dalian Rongke Power Co., Ltd.

Dalian Rongke Power is a well-known Chinese team that specializes in vanadium redox flow batteries for large-scale, long-duration energy storage. Founded in 2008, and headquartered in Dalian, China, the company has expanded rapidly over the past few years as the demand for grid-scale energy storage solutions has increased, and it is recognized as an expert in the flow battery field.

4. CellCube Energy Storage Systems Inc.

CellCube Energy Storage Systems is a leader in vanadium flow battery technology specializing in safe, sustainable, and cost-effective energy storage solutions. The company manufactures vanadium electrolytes and VRFBs that are offered in storage durations from 4 hours, up to 24+ hours to assist in grid management and renewable energy integration.

5. Primus Power Corporation

Primus Power provides long-duration, fade-free energy storage technology for the smart grid. Founded in 2009 and based in Silicon Valley, Primus Power develops zinc-based, rechargeable, commercial-size liquid flow batteries. Primus Power provides scalable, cost-effective storage options for commercial, industrial, and utility customers worldwide.

6. Invinity Energy Systems

Invinity Energy Systems creates and sells grid-scale flow batteries for commercial and industrial applications. The Invinity technology is safe, reliable, durable, and completely recyclable without relying on rare earth or conflict materials. Its batteries also have fire-resistant properties and are designed for long lifespans of service.

7. Redflow Ltd.

Redflow Ltd. designs and manufactures zinc-bromine flow batteries to store electricity from solar panels, support peak loads, and augment diesel generators with battery storage. Redflow, founded in 2005, is known for its ZBM3 flow battery product, which is discharge capable by 100 percent, allowing Redflow to offer off-grid and commercial solutions for energy storage utilizing flow batteries.

8. Sumitomo Electric Industries Ltd.

Sumitomo Electric Industries Ltd. is a diversified technology company founded in Japan in 1897, involved in energy storage and renewable options. Sumitomo Electric Industries contributes to sustainable infrastructure from technology and projects in automotive, electronics, and energy arena including flow battery systems.

9. VoltStorage GmbH

VoltStorage GmbH, a Munich-based company, is focused on iron-salt flow battery technology for long-duration energy storage solutions and has received considerable investments into increasing production capacity and developing new energy storage systems. The company has undergone growth and innovation but announced in 2025 that it was going to be closing its operations amidst challenges of scaling and profitability.

10. StorEn Technologies

StorEn Technologies is a New York-based startup working on vanadium flow battery technology for residential, telecom and industrial applications. The company has received over $540,000 in pre-orders and has forecasted revenues of $11 million for 2025. StorEn Technologies had a net loss of $1.67 million in 2024 while scaling business operations.

Other Leading Global Flow Battery Companies

• Enerox GmbH
• Elestor
• Largo Inc.
• Lockheed Martin Corporation
• SCHMID Group
• Infinite Energy Systems
• H2 Inc.
• Stryten Energy
• Mobius Energy Storage
• Zhonghe Energy Storage
• Sinergy Flow
• Cellfion

Conclusion

The global flow battery market is expected to expand steadily as the world further transitions to renewables and sustainable power solutions. Flow batteries provide long-duration energy storage, high efficiency, and scalability, which are attractive features for grid stabilization, peak load management, and the integration of intermittent energy sources. The market has strong support from favorable government policies, higher investment in energy infrastructure, and ongoing technological developments to improve performance and costs. Challenges remain, such as the initial high capital expenditure and competition from other battery technologies, but with increasing focus on decarbonization, energy reliability, and sustainable power solutions, it is certain flow batteries will provide a key role into the future energy mix, resulting in long term growth in the market.