Top 10 Vanadium Redox Flow Battery (VRFB) Manufacturers in China

Long-duration, utility-scale storage is no longer hypothetical — it’s being built around the world today. Among long-duration chemistries, the vanadium redox flow battery (VRFB) stands out for its intrinsic safety, long calendar life, and independent power/energy scaling. China now leads global manufacturing capacity and project deployment for VRFBs, home to GW-scale factories and several multi-hundred-MWh projects commissioned since 2022.

Quick Comparison of Top 10 VRFB Manufacturers in China:

1. HIITIO

• Founded:2018
• Headquarters / Main sites: Hangzhou, Zhejiang, China
• Core products: VRFB systems, battery stacks, energy storage integration, PCS, and containerized ESS.
• Website: https://www.hiitio.com/

HIITIO is a China-based electrical-accessory supplier and energy-storage integrator that has expanded into vanadium redox flow battery (VRFB) systems designed for utility, C&I and EPC customers. The company emphasizes modular, containerized VRFB units for multi-hour discharge, combining in-house system integration, power electronics and tailored balance-of-plant.

HIITIO positions its VRFB offering as a complement to solar and wind farms where safety, recyclability and long calendar life are decisive. Recent company news highlights factory deliveries and overseas system shipments, underscoring a move from component supply into turnkey storage projects.

Signature products
HIITIO’s VRFB portfolio emphasizes modular containerized blocks optimized for long-duration dispatch, high-cycle lifetime, and low fire risk. For technical details and datasheets, visit HIITIO’s VRFB product page and manufacturer page.

EXPLORE MORE HIITIO VRFB DETAILS

EXPLORE MORE

2. Rongke Power

• Founded: 2008.
• Location: Dalian (Liaoning Province) and Hong Kong presence.
• Core products: Utility-scale VRFB systems, battery stacks, PCS and EPC services.
• Website: https://rkpstorage.com/

Rongke Power is widely regarded as China’s most influential vanadium flow battery developer and a global name in utility-grade VRFB deployments. Founded in the late 2000s and headquartered in Dalian, Rongke has pursued aggressive scale-up: it has multiple GW-level production and project announcements and has delivered some of the largest grid-forming VRFB installations in China. The firm combines R&D in stacks and electrolytes with EPC capabilities, serving large utility and renewable-integration contracts. Its leadership in large-scale demonstration and commercial projects has made Rongke a reference supplier for governments and large power producers seeking long-duration storage.

3. V-Liquid Energy

• Founded: 2004
• Location: Sichuan (headquarters) and several production sites.
• Core products: All-vanadium flow battery stacks and containerized VRFB systems.
• Website: https://en.v-liquid.com/

V-Liquid Energy (often styled as V-LIQUID) is a rapidly growing VRFB manufacturer with multiple production bases in China and an explicit strategy to scale to GW-level stack production. The company focuses exclusively on all-vanadium liquid flow chemistry, stack manufacturing and system integration, and has publicized several large project deployments and trial operations in 2024–2025. V-Liquid emphasizes manufacturability — welding and sealing innovations, compact stack layouts and modular tanks — to reduce cost per kWh while retaining VRFB advantages for long-duration storage and safety. The firm is increasingly visible in regional utility projects and industrial park deployments.

4. Beijing Xingchen New Energy

• Founded: 2021
• Location: Beijing (corporate) with production in Changzhou / Jiangsu.
• Core products: All-vanadium stacks, electrolytes, integrated VRFB systems.
• Website: 星辰新能

Xingchen New Energy is an emerging but influential Chinese player focused on full-chain VRFB industrialization. The company’s value proposition is an integrated supply chain (electrolyte, stacks, battery assembly) and rapid factory automation: in 2023–2024 Xingchen reported an all-vanadium gigawatt-scale automated factory in Changzhou (Wujin) and claims advanced stack and electrolyte IP. Though younger than legacy suppliers, Xingchen’s emphasis on automation, materials integration and academic collaboration positions it as a fast mover in cost reduction and quality control for large VRFB projects. Market observers highlight Xingchen’s potential to accelerate China’s VRFB manufacturing economics.

5. Sineng Electric

• Founded: 2012
• Location: China (headquarters / regional offices).
• Core products: Power conversion systems (PCS), VRFB integration, inverters and grid controllers.
• Website: https://en.si-neng.com/

Sineng Electric is a large Chinese energy-equipment supplier that has entered the vanadium flow battery market via system integration and project delivery. Traditionally known for inverters and power electronics, Sineng has leveraged its grid-interface expertise to provide VRFB solutions tailored to large-scale PV-plus-storage projects. In 2024–2025 the company announced participation in substantial VRFB projects (for example, a 75MW/300MWh installation in Xinjiang), showcasing Sineng’s ability to combine power conversion, control systems and vanadium battery modules into utility-grade solutions. That cross-domain strength makes Sineng a credible supplier for EPCs seeking packaged solutions.

6. Sichuan Tianfu Energy Storage

• Founded: 2022
• Location: Sichuan (Chengdu / Wenjiang district).
• Core products: All-vanadium stacks, battery modules and packaged VRFB systems.
• Website: 四川天府储能科技有限公司

Sichuan Tianfu Energy Storage Technology is a technology-led company targeting industrialized, automated production of all-vanadium flow battery stacks. Established recently with strong academic and R&D links, Tianfu has built a stack production line and claims GWh-scale stack ambitions from its Chengdu/Wenjiang facility. The company positions itself on stack-level innovation, testing and turnkey system supply for projects ranging from microgrids to utility shared stations. Tianfu’s strategy of combining local R&D with automated manufacturing aims to reduce unit costs while preserving the long cycle life and safety profile of VRFBs.

7. Puneng Energy

• Founded: 2007
• Location: Beijing / Hubei region partnerships.
• Core products: VRFB systems, electrolyte sourcing and project engineering.
• Website: Home – VRB Energy

Pu Neng (Puneng Energy) is an early Chinese advocate of VRFBs with project experience in Hubei and other provinces; it has a history of participating in government-backed demonstration projects and in local collaborations to secure electrolyte supply chains. Historically visible in the 2017–2019 project wave, Pu Neng’s work focused on integrating vanadium electrolyte sourcing with project deployment to lower supply-chain risk. While other entrants have scaled manufacturing faster, Puneng’s early project experience and local partnerships still make it a recognized name for grid demonstration projects and early-stage large installations.

8. Suqian Time

• Founded: 2024
• Location: Suqian / Jiangsu region.
• Core products: Vanadium flow battery stacks, aqueous flow energy storage solutions.
• Website: http://en.energydefender.cn/

Suqian Times (also styled “Suqian Time”) is a Chinese energy-storage startup that has concentrated on liquid flow systems, including vanadium flow batteries and aqueous organic alternatives. The company has attracted VC interest and executed pilot production and AORFB/VRFB demonstrations. Suqian Times emphasizes research-driven product development and has announced financing rounds to scale production and commercialization of flow battery technologies for both grid and industrial applications. Their strategy targets niche markets where temperature range, cycle life and system economics favor flow chemistries over lithium.

9. Mengneng Group

• Founded: 2013
• Location: Inner Mongolia and other provincial projects.
• Core products: Large-scale VRFB hybrid projects and integrated energy storage stations.
• Website: https://www.mengnengs.com/

Mengneng Group (sometimes referenced in industry press as part of Inner Mongolia or regional energy conglomerates) has moved into flow battery projects by combining vanadium flow cells with hybrid electrochemical storage to meet large clean-energy targets. Recent project announcements describe multi-hundred-MW investments that mix VRFB and electrochemical systems to reach GW-scale deployments in Inner Mongolia and other regions. Mengneng’s advantage is scale economy and access to regional project financing for utility-scale installations that combine generation and storage on a shared site. Industry sources report major investments and groundbreakings for multi-hundred-MWh installations under Mengneng’s involvement.

10. Wontai (WONTAI Power)

• Founded: 2021
• Location: China (regional bases).
• Core products: VRFB stacks, modules and turnkey energy storage systems.
• Website: https://www.wontai.cn/enqyjj.html

Wontai (often referenced as WONTAI Power) is an innovative enterprise active in vanadium flow energy systems and related R&D. The company’s public materials highlight independent stack development and production alongside system integration. Wontai and similar mid-tier manufacturers serve regional industrial and microgrid clients who require scalable modular VRFB units and support for deployment in non-standard sites. Wontai’s technology portfolio emphasizes reliability, modular stack designs and project-level engineering services for clients seeking alternatives to mainstream lithium solutions for long-duration needs.

How to pick a VRFB supplier

1. Project scale match: choose manufacturers with proven deliveries at your target MWh scale (Rongke, V-Liquid, HIITIO for small–mid; Rongke, Mengneng, V-Liquid for multi-100-MWh+).
2. Supply chain for electrolyte: prefer companies with secured electrolyte sourcing or in-house electrolyte capability to avoid vanadium price/supply risks.
3. Integration & PCS: If you need turnkey plant services, pick vendors who provide PCS and EPC (Sineng, Rongke, HIITIO).
4. Warranties & lifecycle economics: compare round-trip efficiency, maintenance intervals and electrolyte replacement policies for TCO modelling.

View HIITIO Real VRFB Cases

Partner with HIITIO for Scalable and Proven VRFB Technology

If your project requires a reliable, safe and long-duration energy storage partner, HIITIO’s vanadium redox flow battery solutions are engineered for exactly that purpose. HIITIO offers modular VRFB systems designed for multi-hour dispatch, containerized delivery for rapid site integration, and factory-tested stacks for dependable cycle life and low-maintenance operation. Our systems are suitable for utility-scale renewable firming, microgrids and industrial backup where fire safety, recyclability and extended calendar life are mission-critical.

For technical specifications, configurations and commercial offers, please consult HIITIO’s VRFB product page and company manufacturer profile, or contact our project team to request a datasheet and site sizing assistance. Choose a partner who can deliver components, integration and verified field experience.