Aug 20, 2026
By Transpire Insight
Description
According to a research report published by Transpire Insight, The Flow Battery Energy Storage Market size is projected to Grow from USD 47.98 Million in 2025 to USD 81.01 Million by 2035, at a CAGR of 7.12% during the forecast period 2026-2035. The market expansion will be fueled by the growing adoption of solar and wind energy, investment in the upgrading of power grids, government policies on energy storage technologies, and the rising demand for energy storage systems that can deliver multi-hour discharge capability, longevity, and improved safety. Innovation in technologies such as vanadium redox flow batteries, zinc-bromine flow batteries, iron flow batteries, and electrolytes, as well as reduced system costs and large scale energy storage installations, will continue to fuel market growth during the forecast period.
Introduction
The Flow Battery Energy Storage Market is dedicated to the provision of rechargeable batteries utilizing a liquid electrolyte stored in external tanks for the purpose of capturing and discharging electricity via electrochemical reactions. Unlike traditional batteries which store energy in solid electrodes, flow batteries provide separation between capacity for power storage and energy storage, whereby the time of storage may be increased via increase in the amount of electrolyte, thus making the technology especially suitable for utility-scale installations and longer storage times. The market is being driven by fast adoption of solar and wind power, the need for grid flexibility due to increasing problems with handling electricity production from renewable sources, and reliable storage able to move energy from off-peak times to peak times. Vanadium redox, zinc-bromine, iron-based, and other flow batteries are gaining popularity.
Recent Development News
Stay Ahead of Emerging Opportunities with Expert Market Insights by Transpire Insight
The insights that have been shared through this blog are based on intensive market research carried out by Transpire Insight, an advisor that works with many organizations. Thanks to the analysis of extensive data, forecasts made by our specialists, and industry intelligence, our reports allow clients to find strategic growth opportunities in dynamically developing industries. For all those who would like to get more detailed information regarding market segmentation, competitive analysis, regional outlooks, and future investment tendencies, there is no doubt that our full report will be of great value.
Download the exclusive Flow Battery Energy Storage Market sample report today to uncover expert insights, emerging trends, and the opportunities defining the future of the industry.
Flow Battery Energy Storage Market Size & Statistics
Regional Growth and Demand Analysis by Transpire Insight:
The Flow Battery Energy Storage Market is dominated by the Asia-Pacific market currently owing to the massive deployment of renewable energy sources, high demand for energy, upgrades in grid infrastructure, and substantial investments made by the governments in building clean energy infrastructures. China, Japan, South Korea, and India are examples of those countries which are making use of energy storage systems to handle the fluctuations in solar and wind energy production and stabilize their grid. Among all the countries, China is a notable contributor because of the addition of many capacities of renewable energy sources, utility-scale storage, and the domestic manufacture of vanadium redox flow batteries.
Asia-Pacific has the advantage of being quick with the deployment of renewable energy sources, higher electricity consumption rate, energy policies, manufacturing ability, and investments in advanced batteries. The supply chain of battery materials and low dependence on fossil fuel sources are some of the factors that make the adoption faster.
North America is anticipated to witness robust growth during the forecast period, owing to the increasing demand for long-term energy storage, increased adoption of renewable power generation, government initiatives to promote clean energy projects, and investment in grid reliability and energy independence. Flow battery solutions are being increasingly adopted in the United States in utility scale and renewable energy projects.
Top 15 Trends in the Flow Battery Energy Storage Market
Proceed to Checkout to purchase the exclusive Flow Battery Energy Storage Market report and gain instant access to in-depth market intelligence, strategic analysis, and future growth opportunities.
The importance of flow batteries has increased due to the need for storage solutions in electricity grids that should be able to supply energy not only over a short time period but also for hours. It is possible to scale up the storage of the electrolytes independently from the power production in flow batteries, which makes them a perfect candidate for long duration storage.
Flow batteries are becoming more popular for managing the intermittent power generation of renewable sources like solar and wind technologies. Flow batteries allow storage of surplus electrical power that is produced at times of high renewable power generation and discharging this surplus at times of low renewable power generation and increased demand.
VRFBs are still one of the important paths that have been considered for the development of new battery systems due to the potential benefits that include long cycle life, deep discharge, and reusability of electrolytes after numerous operation cycles. Energy companies are considering the usage of VRFBs in applications where the need for cycle life and service life outweigh the need for small size of the battery.
Iron-based flow batteries are gaining more interest owing to the abundant availability of iron when compared with the other metals used in certain batteries. This may be attributed to the possibility of using iron-based chemistries to achieve cheap storage systems. There might be further developments that would make them applicable commercially.
Flow batteries are also gaining recognition as a technology choice for large grid-scale deployments intended to enable energy time-shifting, peak shaving, renewable energy integration, and grid stability. The scalable tank-based design of flow batteries makes them a good fit for applications that require long durations of storage. With the increasing penetration of renewables on electricity networks, the use of utility-scale flow batteries will become more common.
Grids are getting more variable with the increasing contribution of renewable energy sources in the generation mix, thus requiring flexible energy storage technologies. Flow batteries are well suited for renewable balancing because they can store excess energy and then release it when necessary. The long lifetime and the high cyclability of flow batteries make them good candidates for grid energy storage systems.
Top 25 Companies Leading the Flow Battery Energy Storage Market
Customize the exclusive Flow Battery Energy Storage Market report today to receive tailored insights, country-specific analysis, and business-focused market intelligence.
1. Sumitomo Electric Industries, Ltd.
Sumitomo Electric Industries is a diversified Japanese technology company with a strong presence in energy storage, including redox flow battery systems designed for large-scale and long-duration electricity storage.
Founded: 1897 | Headquarters: Osaka, Japan
Why It Ranks: It ranks highly because of its long-standing experience in redox flow battery technology, large-scale project deployments, and established relationships with utilities and energy infrastructure operators.
Regional Dominance: Japan and the wider Asia-Pacific region are key markets, with technology also deployed internationally.
Product Line: Vanadium redox flow batteries, large-scale energy storage systems, grid stabilization solutions, and renewable-energy integration systems.
Recent Development: Sumitomo Electric continues expanding its redox flow battery business for renewable integration and long-duration grid storage, with increasing focus on improving system economics and operational performance.
2. Invinity Energy Systems plc
Invinity Energy Systems is a UK-based energy technology company specializing in vanadium flow batteries for utility-scale and industrial long-duration energy storage.
Founded: 2013 | Headquarters: London, United Kingdom
Why It Ranks: The company ranks strongly due to its dedicated focus on vanadium flow batteries and growing portfolio of large-scale renewable-energy storage projects.
Regional Dominance: The United Kingdom, North America, Australia, and other international renewable-energy markets represent important areas of activity.
Product Line: Vanadium flow batteries, utility-scale storage systems, renewable-energy storage solutions, and long-duration energy storage platforms.
Recent Development: Invinity continues commercial deployment of its Endurium vanadium flow battery platform, targeting large-scale renewable energy and grid-storage applications.
3. Rongke Power
Rongke Power is a Chinese energy-storage technology company specializing in vanadium flow battery systems for large-scale electricity storage.
Founded: 2008 | Headquarters: Dalian, China
Why It Ranks: It ranks among the leading flow battery companies because of its large manufacturing capabilities, extensive vanadium flow battery experience, and involvement in major utility-scale storage projects.
Regional Dominance: China is its core market, supported by growing activity across the broader Asia-Pacific region.
Product Line: Vanadium redox flow batteries, utility-scale energy storage systems, renewable-energy storage, and grid-support solutions.
Recent Development: Rongke Power has continued scaling its vanadium flow battery manufacturing and supporting large-duration energy storage projects designed to integrate renewable power into China's electricity network.
4. ESS Tech, Inc.
ESS Tech is a U.S.-based energy storage technology company developing iron-based flow batteries for long-duration electricity storage.
Founded: 2011 | Headquarters: Wilsonville, Oregon, USA
Why It Ranks: ESS ranks highly because its iron-flow technology uses abundant materials and is designed for long-duration applications, offering an alternative to lithium-ion and vanadium-based systems.
Regional Dominance: North America is its primary market, with growing opportunities in international renewable-energy projects.
Product Line: Iron flow batteries, long-duration energy storage systems, utility-scale storage solutions, and renewable-energy integration platforms.
Recent Development: ESS continues commercializing its Energy Warehouse and Energy Center platforms, targeting multi-hour and long-duration storage for renewable energy and grid applications.
5. VRB Energy
VRB Energy is an energy storage technology company focused on vanadium redox flow battery systems for utility-scale and long-duration energy storage applications.
Founded: 2017 | Headquarters: Vancouver, Canada
Why It Ranks: The company is recognized for its dedicated vanadium flow battery technology and focus on large-scale renewable integration and grid storage.
Regional Dominance: China and Asia-Pacific are important markets, with the company also targeting international energy storage opportunities.
Product Line: Vanadium redox flow batteries, grid-scale energy storage systems, renewable-energy storage, and integrated energy solutions.
Recent Development: VRB Energy continues advancing large-scale vanadium flow battery projects and technology development aimed at improving long-duration storage economics and deployment.
6. CellCube Energy Storage Systems Inc.
CellCube Energy Storage Systems is a Canadian energy storage company specializing in modular vanadium redox flow battery systems for long-duration applications.
Founded: 2019 | Headquarters: Toronto, Canada
Why It Ranks: Its modular approach and focus on scalable vanadium flow battery systems position the company for commercial, industrial, microgrid, and renewable-energy applications.
Regional Dominance: North America is a key market, with opportunities across Europe, Australia, and other renewable-energy markets.
Product Line: Vanadium flow battery systems, modular energy storage units, microgrid solutions, renewable-energy storage, and commercial and industrial storage systems.
Recent Development: CellCube has continued developing modular flow battery deployments aimed at supporting renewable energy, microgrids, and resilient power infrastructure.
7. Redflow Limited
Redflow is an Australian energy storage company specializing in zinc-bromine flow battery technology for long-duration energy storage.
Founded: 2005 | Headquarters: Brisbane, Australia
Why It Ranks: Redflow differentiates itself through zinc-bromine chemistry, which offers long-duration operation, deep cycling, and a non-lithium approach to stationary energy storage.
Regional Dominance: Australia is its core market, with growing commercial opportunities in North America and other regions.
Product Line: Zinc-bromine flow batteries, modular energy storage systems, microgrid solutions, renewable-energy storage, and commercial and industrial storage systems.
Recent Development: Redflow continues commercial development and deployment of its zinc-bromine flow battery systems for renewable energy, microgrid, and long-duration storage applications.
8. Primus Power
Primus Power is a U.S. energy technology company known for developing zinc-based flow battery systems for stationary energy storage.
Founded: 2009 | Headquarters: Hayward, California, USA
Why It Ranks: The company's zinc-based flow battery technology provides an alternative pathway for long-duration grid storage and has been developed for high-cycle stationary applications.
Regional Dominance: North America has historically been its primary market and technology development base.
Product Line: Zinc-bromine flow battery systems, grid energy storage, renewable-energy storage, and commercial energy storage solutions.
Recent Development: Primus Power's technology development has focused on improving the scalability and economics of zinc-based flow batteries for utility and renewable-energy applications.
9. UniEnergy Technologies
UniEnergy Technologies was a U.S. energy storage technology company known for developing vanadium redox flow battery systems for grid-scale energy storage.
Founded: 2012 | Headquarters: Mukilteo, Washington, USA
Why It Ranks: The company contributed significantly to the development and commercialization of vanadium flow battery technology for long-duration stationary storage.
Regional Dominance: North America was its principal market and technology-development region.
Product Line: Vanadium redox flow battery systems, grid-scale energy storage, renewable-energy integration, and long-duration storage solutions.
Recent Development: UniEnergy Technologies is primarily a historical market participant rather than an active standalone company, following the transfer of its technology and assets to other industry participants. Its technology nevertheless remains relevant to the development of modern vanadium flow batteries.
10. Dalian Rongke Power Co., Ltd.
Dalian Rongke Power is a Chinese manufacturer and developer specializing in vanadium redox flow battery systems and large-scale energy storage infrastructure.
Founded: 2008 | Headquarters: Dalian, China
Why It Ranks: The company ranks among the leading flow battery participants due to its substantial manufacturing capabilities, vanadium flow battery expertise, and involvement in large utility-scale installations.
Regional Dominance: China is its dominant market, supported by strong growth in renewable energy and grid-scale storage across Asia-Pacific.
Product Line: Vanadium redox flow batteries, large-scale energy storage systems, renewable-energy storage, grid balancing, and energy management solutions.
Recent Development: Dalian Rongke Power continues expanding its vanadium flow battery production and large-scale storage projects as China increases its investment in long-duration energy storage and renewable power integration.
Schedule a meeting with our market experts to discuss the exclusive Flow Battery Energy Storage Market report and identify the best research solution for your organization.
Conclusion
The Flow Battery Energy Storage Market is emerging as an important component in the growing trend towards long-term energy storage solutions in the landscape. The growing use of solar and wind energy, grid transformation, increasing energy requirements, and reliable multi-hour storage needs are creating conducive conditions for the uptake of flow battery technology. Some of the major players in this industry include Sumitomo Electric Industries, Invinity Energy Systems, Rongke Power, ESS Tech, VRB Energy, CellCube Energy Storage Systems, Redflow, Primus Power, UniEnergy Technologies, and Dalian Rongke Power, among others. Future growth prospects in the market are likely to be associated with applications like renewable integration, utility-level grid balancing, microgrids, commercial & industrial applications, and energy resilience. Improvement in electrolyte cost, energy density, efficiency, modularity, recyclability, and manufacturing scale are going to be vital in enhancing the competitive position of flow batteries over traditional energy storage options.
Send us a brief description of your challenge and we'll get back to you within 24 hours.
inquiry@transpireinsight.com
APAC:+91 7666513636
Address
