Redox Flow Battery

Product catalog summary

Principle and Features
The Redox Flow Battery system operates on the principle of reduction and oxidation of vanadium ions, allowing for semi-permanent use of the electrolyte without deterioration. The system separates power (MW) and energy (MWh), making it easy to build long-duration energy storage (LDES) systems with expandable capacity beyond 10 hours. It features low capital expenditure (CAPEX) per kWh and low operational expenditure (OPEX) due to the lack of need for cell stack or electrolyte replacement. The system also offers significant salvage value with reusable electrolytes.

Configuration
The system is designed with a minimized footprint using a two-storey model, where the top is a battery container and the bottom two are electrolyte tank containers. It supports a wide range of capacities and durations, with container types ranging from 20ft to 53ft, supporting durations from 3 to 10 hours.

Safety and Operability
The Redox Flow Battery uses non-flammable electrolytes, ensuring no thermal runaway and safe operation under tough environmental conditions. It offers a long lifetime with over 20 years of design life, unlimited charging/discharging cycles, and low degradation of capacity. The system allows for 0-100% state of charge (SoC) with accurate real-time monitoring.

Demonstration Projects
Several demonstration projects highlight the system's capabilities:

Hokkaido Electric Power Network Project: 17MWx3h (51MWh) system for grid control and renewable generation smoothing in Japan.
San Diego Gas & Electric Project: 15MWx4h (60MWh) system for frequency regulation and renewable generation smoothing in California, US.
UNIDO Morocco Project: 125kWx4h (500kWh) system for microgrid and renewable generation smoothing in Morocco.
John Cockerill Project: 500kWx3.4h (1,700kWh) system for microgrid and peak shaving in Belgium.

Applications
The Redox Flow Battery system is suitable for various applications, including frequency regulation, renewable generation smoothing, peak shaving, microgrid operations, and demand response. It has been successfully integrated into projects across Japan, the US, Europe, and Africa, demonstrating its versatility and reliability in different environments.

Catalog excerpts

Redox Flow Battery − Long Duration Energy Storage (LDES) − Redox Flow Battery System Division https://sumitomoelectric.com/products/redox

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Technology Fundamentals and Key Features Principle Container Type Redox Flow Battery Redox: Reduction/Oxidation of active materials Flow: Flowing active materials with pumps from tanks Power grid Charge Single cell & Cell stack Frame Membrane Bi-polar plate Charge Electrolyte Tank Electrolyte Tank Cell Stack Pump Minimized installation with the two-storey model: the top is battery container and the bottom two are electrolyte tank containers. Tank Container Design Flexibility Pump Positive Reaction Heat Exchanger Footprint Reduction Cell stacking Electrode Membrane Pump Battery Container Low CAPEX...

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Grid-scale Project for Utility in Japan Hokkaido Electric Power Network Project Grid-scale Project for Utility in US Flow Battery Pilot Project for Grid Applications in California (NEDO project) Customer: Hokkaido Electric Power Network, Inc. Customer: San Diego Gas & Electric (SDG&E) Location: Minami-Hayakita Substation Hokkaido, Japan Location: San Diego, California, US Power and Energy: 2MWx4h (8MWh) Application: Multiple uses of electricity market (CAISO) operation, Microgrid, Peak shaving, Renewable firming Application: Enhancing grid control for new 162MW wind turbines (e.g. Frequency regulation,...

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Project in Africa & Europe & Asia UNIDO Morocco Project Customer: UNIDO / MASEN Customer: NIPPON P.S CO.,LTD. Location: Ouarzazate, Morocco Location: Tsuruga, Fukui, Japan Application: Microgrid, Renewable generation smoothing Application: Carbon emissions reduction by effective renewable energy utilization Operation under tough environmental conditions Commencement of Operation: Jul. 2019 John Cockerill Project Obayashi Corporation Project Customer: John Cockerill Customer: Obayashi Corporation Location: Seraing, Belgium Location: Tokyo, Japan Application: Microgrid, Peak shaving, Peak cut operation,...

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