Suqian Times Energy Storage

What Suqian Times Energy Storage does

Suqian Times Energy Storage (宿迁时代储能科技有限公司) is a privately-held Chinese manufacturer of flow batteries founded in 2021 and headquartered in Suqian, Jiangsu Province. The company designs, produces, and sells three flow battery chemistry platforms — aqueous organic, all-vanadium, and iron-chromium — as well as the underlying core materials (anion exchange membranes, bipolar plates, sealing films, pipes and fittings). Its core proprietary technology is an aqueous organic flow battery platform that uses organic quaternary ammonium salts dissolved in neutral NaCl aqueous solution, offering intrinsic safety, an operating life exceeding 20 years, and millisecond-level frequency regulation response. The company claims over 100 domestic and international patents and an R&D team of more than 100 personnel, supported by formal collaborations with the Chinese Academy of Sciences, Chinese Academy of Engineering, USTC, Xi'an Jiaotong University, and Changzhou University.

The business operates a vertically integrated model spanning complete systems (250kW/1MWh to 500kW/2MWh), stacks (7kW to 80kW), and core materials. Manufacturing runs across three GW-scale production bases in Suqian, Lianyungang, and Baotou, with a Phase 2 3GWh expansion initiated in 2024. Revenue is generated primarily through project-based hardware sales and engineering/integration services sold to enterprise and government customers — state grid operators, power generation companies, and industrial enterprises — in China, with international expansion pursued through a wholly-owned German subsidiary, Jena Flow Batteries, and strategic partnerships with Uniper (European GTM), Redox One (iron-chromium supply, 600MWh order), and Quino Energy (US aqueous organic). The company has raised two major rounds (Series A RMB 100M led by Hillhouse/GL Ventures in October 2023; Series A+ several hundred million RMB led by Beijing Green Energy Fund in December 2024), holds national 'Little Giant' enterprise status, and won the 2024 first-prize Technical Invention Award from the China Petroleum and Chemical Industry Federation.

Name

Suqian Times Energy Storage

Legal name

宿迁时代储能科技有限公司

Website

https://energydefender.cn

Company type

Private

Founded year

2021

Operating status

Operating

Short description

Suqian Times Energy Storage is a Chinese manufacturer of aqueous organic, all-vanadium, and iron-chromium flow battery systems and core materials. Founded in 2021, it serves grid operators, power generators, and industrial enterprises in China and Europe through GW-scale production capacity and a German subsidiary.

Ownership category

akta.pro rank

Product category

Flow Battery Energy Storage Systems

NAICS

Battery Manufacturing (33591), Battery Manufacturing (335910)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Electrochemical LDES (Flow Batteries & Other Long-Duration Batteries) (EUAFADAA)

akta.pro secondary industry

Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB)

Keywords

• Flow battery manufacturing
• Energy storage systems
• Long duration storage
• Grid scale batteries
• Aqueous organic electrolytes

Headquarters

HQ city

Suqian

HQ country

China

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Flow Battery System Sales: Sale of aqueous organic flow battery and iron-chromium flow battery hardware systems. One-time capital equipment revenue from large-scale energy storage deployments.
2. Engineering and Integration Services: Project engineering, system integration, and deployment services for energy storage projects. Provides end-to-end solutions to customers alongside hardware delivery.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels1 record

Core offering

Suqian Times Energy Storage manufactures flow battery energy storage systems across three chemistry platforms — aqueous organic, all-vanadium, and iron-chromium — along with stacks and proprietary core materials (anion exchange membranes, bipolar plates, sealing films, pipes/fittings). The company sells complete energy storage systems (250kW/1MWh to 500kW/2MWh) plus engineering and integration services to enterprise and government customers in China and Europe, with end-use applications in grid frequency regulation, long-duration storage, renewable integration, and industrial peak shaving.

Product overview

Suqian Times Energy Storage is a specialized manufacturer of flow batteries offering three main battery technology series (aqueous organic, all-vanadium, and iron-chromium) plus supporting stack products and core materials. The product portfolio includes complete energy storage systems (250kW/1MWh to 500kW/2MWh capacity), stacks (7kW to 80kW power range), and critical components (anion exchange membranes, bipolar plates, sealing films, pipes and fittings). The company implements a full industry chain strategy from core materials to battery systems, with all products designed for grid-side, power generation-side frequency regulation and long-duration energy storage applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Aqueous Organic Flow Battery Energy Storage System Water-based organic flow battery energy storage system using organic quaternary ammonium salt materials dissolved in neutral NaCl aqueous solution. Features intrinsic safety (no fire/explosion risk), ultra-long lifespan exceeding 20 years, and millisecond-level response for frequency regulation applications. Sold to grid operators, power generation companies, and industrial customers for grid-side, power generation-side frequency regulation, and long-duration energy storage.
• All-Vanadium Flow Battery Energy Storage System Vanadium redox flow battery energy storage system designed for international long-duration energy storage and large-scale energy storage power station applications. For grid operators and large-scale power station deployments.
• Iron-Chromium Flow Battery Energy Storage System Iron-chromium flow battery energy storage system targeting zero-carbon parks and high energy-consuming enterprises, featuring 180kW/720kWh standardized product. For industrial enterprises seeking peak load management and zero-carbon park compliance.
• Organic Flow Battery Stack Stack product for organic flow batteries with power ratings of 7kW/10kW/20kW/50kW and energy efficiency ≥81%. Component for building aqueous organic flow battery systems.
• All-Vanadium Flow Battery Stack All-vanadium flow battery stack with power options of 16kW/28kW/70kW, energy efficiency ≥82%, and current density of 125mA·cm⁻². Component for building all-vanadium flow battery systems.
• Iron-Chromium Flow Battery Stack Iron-chromium flow battery stack with 10kW power, ≥80% energy efficiency, operating temperature range of 35°C–65°C, and service life exceeding 25 years. Component for building iron-chromium flow battery systems.
• Anion Exchange Membrane (AEM-ES50) Anion exchange membrane with thickness of 50±1 μm, water absorption 20~30% at 20°C, tensile strength 40±5 MPa, chloride ion conductivity >75 mS/cm at 20°C, and alkali resistance stability of 2500h in 1M NaOH at 80°C. Core proprietary material for flow battery systems.
• Anion Exchange Membrane (AEM-HP80) Third-generation anion exchange membrane (AEM) for water electrolysis with current density of 1-2.5A/cm², system conversion efficiency of 70%-85%, and service life of 10-20 years.
• Bipolar Plate Bipolar plate with tensile strength >35MPa, flexural strength >45MPa, volume resistance <40mΩ·cm, thickness 0.5~1mm, and contact resistance <100mΩ·cm². Core material for flow battery stacks.
• Sealing Film Sealing film with hardness of 68, specific gravity 0.9g/cm³, tensile strength 7.8MPa, featuring corrosion resistance, strong sealing performance, high resilience, and low creep. Production capacity of 3 million square meters per year.
• Pipes and Fittings Pipes and fittings with Vicat softening temperature >83°C, density 1396kg/m³, featuring lightweight, high mechanical strength, corrosion resistance, and low fluid resistance. Production capacity of 1000 tons per year.
• Engineering and Integration Services Project engineering, system integration, and deployment services for energy storage projects. Provides end-to-end solutions to customers alongside hardware delivery for grid-scale and industrial energy storage deployments.

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

14 partnerships are on record, tiered core and minor.

• Redox OnecoreTechnology or IntegrationStrategic cooperation with German company Redox One for iron-chromium flow battery supply and technology integration. Redox One supplies iron-chromium flow battery components and systems to Suqian Times, enabling a complementary product line alongside the company's primary aqueous organic flow battery platform.
• Quino EnergycoreStrategic or Co-development PartnerStrategic cooperation with US-based Quino Energy for aqueous organic flow battery technology and MW-level project deployment. Includes a MW-level project order for Quino Energy.
• UnipercoreGTM or Marketing PartnerPartnership with German utility company Uniper for European market expansion. Uniper serves as a strategic channel partner for introducing Suqian Times' flow battery technology into the European market.
• Jena Flow BatteriescoreChannel Partner/ Reseller/ DistributorGerman subsidiary of Suqian Times Energy Storage. Operates as the European hub for sales, distribution, and customer engagement in the European market. Supports the Uniper GTM partnership.
• Huasheng New EnergyminorStrategic or Co-development PartnerCollaboration with Huasheng New Energy focused on photovoltaic (solar) and long-duration storage integration projects.
• National Power Investment Comprehensive Smart EnergyminorStrategic or Co-development PartnerStrategic partnership with National Power Investment Comprehensive Smart Energy for integrated smart energy solutions incorporating energy storage.
• Huaneng New EnergyminorImplementation/ SI/ Consulting PartnerPartnership with Huaneng New Energy for energy storage technology deployment and project implementation. Huaneng New Energy deploys Suqian Times' storage technology in projects.
• Xi'an Thermal Power Research InstituteminorStrategic or Co-development PartnerCollaborative research and technology development partnership with Xi'an Thermal Power Research Institute for energy storage technology advancement and application research.
• Chinese Academy of SciencesminorStrategic or Co-development PartnerR&D collaboration with the Chinese Academy of Sciences on energy storage technology research and development.
• Chinese Academy of EngineeringminorStrategic or Co-development PartnerR&D collaboration with the Chinese Academy of Engineering on energy storage technology innovation.
• University of Science and Technology of China (USTC)minorStrategic or Co-development PartnerR&D collaboration with USTC on energy storage technology research and development.
• Xi'an Jiaotong UniversityminorStrategic or Co-development PartnerR&D collaboration with Xi'an Jiaotong University on energy storage technology.
• Changzhou UniversityminorStrategic or Co-development PartnerR&D collaboration with Changzhou University on energy storage technology research.
• National Energy Storage Innovation CenterminorStrategic or Co-development PartnerCollaborative participation in the National Energy Storage Innovation Center for joint technology development and innovation in energy storage.

Scale indicators5 records

Recent moves12 records

Expansion highlights6 records

Direct peers

• Redflow: Australian zinc-bromide flow battery manufacturer targeting commercial, industrial, and microgrid applications. Direct peer in the non-vanadium flow battery category targeting distributed LDES.
• Invinity Energy Systems: UK/Canada-based vanadium flow battery manufacturer focused on commercial, industrial, and utility-scale long-duration storage. Comparable in target use cases (LDES, microgrids, renewable integration) and in offering complete flow battery systems globally.
• VRB Energy: Beijing/Canada-based long-duration vanadium redox flow battery manufacturer targeting grid-scale storage worldwide. Direct competitor in the same flow battery category with similar utility customer base, and the most established Chinese-origin flow battery peer.
• Redox One: German iron-chromium flow battery company that is both a technology partner and a major customer of Suqian Times (600MWh order). Overlapping product line and a natural peer in iron-chromium flow for European industrial and grid markets.
• CellCube (Enerox GmbH): Austrian/German vanadium redox flow battery manufacturer serving commercial and industrial customers across Europe. Comparable in product category, use cases, and Europe-centric go-to-market.
• Dalian Rongke Power (Rongke New Energy): Leading Chinese all-vanadium flow battery manufacturer with large-scale deployments for Chinese state grids. Competes directly with Suqian Times in the China grid and large-scale LDES market using the same vanadium chemistry.
• ESS Inc. US-based iron flow battery manufacturer targeting long-duration storage for utilities and commercial customers. Directly comparable technology category (aqueous flow, non-lithium) and customer base.
• Sumitomo Electric Industries: Japanese conglomerate with a long-established vanadium redox flow battery business serving utility-scale projects globally. Competes in the same LDES category with decades of operating history and reference deployments.
• Quino Energy: US-based aqueous organic flow battery developer. Direct technology peer (aqueous organic chemistry) and a strategic partner/customer of Suqian Times, making it a close competitor in the emerging aqueous organic LDES niche.

Broad incumbents

• CATL (Contemporary Amperex Technology): World's largest battery manufacturer with a growing energy storage systems business. While primarily lithium-ion, CATL is a broad incumbent that competes for utility-scale storage tenders in the same Chinese and international markets where Suqian Times operates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors8 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Suqian Times Energy Storage