Key Advantages of our technology
Inherent Safety
Non-flammable, non-explosive,
alkaline electrolyte
Low Cost
LCOS≈$45/MWh
(within 3 years)
Long Duration
4-10 hours,
decoupled power and capacity
Mass Production
GW-scale production
Long Lifespan
> 20 years
Flexible in Location
No geographical constraints
Short Construction Period
3-6 months
Environment-friendly
No hazardous waste
Zinc-iron Flow Batteries
The zinc-iron flow battery is a long-duration energy storage technology with origins in the 1970s. It is a high-capacity, novel energy storage product based on globally leading zinc-iron flow battery energy storage technology.
Utilizing an alkaline aqueous electrolyte formula, the zinc-iron flow battery is non-flammable, non-explosive, environmentally friendly, and generates no hazardous waste. It boasts long-duration energy storage, Inherent safety, and an ultra-long system lifespan. The abundant and affordable raw materials for zinc-iron flow batteries (including zinc and iron) provide significant cost advantages and room for cost reduction. Additionally, the independent scalability of the power module and capacity module allows the zinc-iron flow battery to flexibly adjust the system scale and energy storage duration as needed.
working principles
A zinc-iron flow battery consists of a power module (stack), a capacity module (electrolyte storage and supply unit), a circulation system, and an energy management system.
The energy of a zinc-iron flow battery is stored in the electrolyte, which is typically housed in tanks separate from the stack structure, forming the capacity module. During charging and discharging, a specially formulated aqueous electrolyte containing redox-active species is transported by the circulation system to the stack under the control of the energy management system to undergo redox reactions, converting electrical energy into chemical energy stored in the electrolyte. During discharging, this process is reversed, and the battery releases energy.
working principles
A zinc-iron flow battery consists of a power module (stack), a capacity module (electrolyte storage and supply unit), a circulation system, and an energy management system.
The energy of a zinc-iron flow battery is stored in the electrolyte, which is typically housed in tanks separate from the stack structure, forming the capacity module. During charging and discharging, a specially formulated aqueous electrolyte containing redox-active species is transported by the circulation system to the stack under the control of the energy management system to undergo redox reactions, converting electrical energy into chemical energy stored in the electrolyte. During discharging, this process is reversed, and the battery releases energy.
application scenarios
The zinc-iron flow battery, as a long-duration energy storage technology, is well-suited for various energy and power applications, including power generation storage, grid peak adjustment, and industrial and community energy storage.
Generation
Enable more clean energy to be connected to the grid, promote multi-energy complementarity.
Grid
Improve the flexible adjustment capacity and security and stability of the power grid, and achieve a smarter and safer new power system.
Load
Support the diversified energy needs of load storage, enabling safe, green, and reliable energy to contribute to a better society.
application projects
Demonstration Zone of Green and Integrated Ecological Development of the Yangtze River Delta
The Zinc-iron flow battery is used in the Yangtze River Delta Ecological and Green Zone. As part of YRDI’s “new infrastructure,” it highlights energy technology integrated with engineering to achieve “Zero-Carbon YRDI.” Envision AESC, with its long-duration storage, partners with YRDI to create a replicable zero-carbon park with an integrated “source-grid-load-storage” system, including a photovoltaic carport using roof solar panels to power parking and wastewater treatment.
Zero-Carbon Smart Integrated Energy Center at Yangpu Riverside, Shanghai
WeView and State Grid Shanghai’s Urban Power Supply Co. jointly built a Zero-Carbon Smart Integrated Energy Center in Yangpu Riverside, integrating solar PV, energy storage, smart management, and carbon footprint analysis. Using zinc-iron flow batteries, they installed a 100kW/400kWh centralized storage system and a smart management platform. In early 2024, the project was selected as a national pilot for new energy storage by the NEA.
Pilot Energy Storage Project in Jiangxi
In October 2021, WeView and Jiangxi Electric Power Construction successfully grid-connected a 200kW/600kWh “Smart Energy Demonstration Project” in Shangrao, Jiangxi. The project features a 200kW/600kWh zinc-iron flow battery, boosted to 10kV. Integrated with a 20MW PV plant, it enables power tracking, peak shaving, curve following, fluctuation mitigation, and voltage regulation.