Sumitomo Electric Wiring Systems Archives | Market Krystal https://www.marketkrystal.com/chemical-news/company/sumitomo-electric-wiring-systems/ Voice of Chemical Industry Leaders Wed, 08 Jul 2026 00:00:00 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.8 148046184 Sumitomo Electric Begins Building 8,000 kWh Vanadium Flow Battery in Kashiwazaki https://www.marketkrystal.com/chemical-news/sumitomo-electric-wiring-systems-sumitomo-electric-begins-building-8000-kwh-vanadium-flow/ Wed, 08 Jul 2026 00:00:00 +0000 https://www.marketkrystal.com/chemical-news/sumitomo-electric-wiring-systems-sumitomo-electric-begins-building-8000-kwh-vanadium-flow/ Sumitomo Electric Industries has received an order from Kashiwazaki IR Energy for a fourth-phase vanadium redox flow battery system in Kashiwazaki City, Niigata Prefecture, and construction has begun. The 8,000…

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]]> Sumitomo Electric Industries has received an order from Kashiwazaki IR Energy for a fourth-phase vanadium redox flow battery system in Kashiwazaki City, Niigata Prefecture, and construction has begun. The 8,000 kWh system, rated 1,000 kW for 8 hours, is scheduled to start operation in spring 2027 and will lift cumulative storage at the site to 32,000 kWh. The project is subsidized under the FY2026 Program for Promoting Public Understanding of Advanced Energy Structure and Transformation and will store surplus solar power for use at peak demand.

Why it matters

Growing VRFB deployments in Japan add demand for vanadium electrolyte and grid-scale storage hardware, supporting renewable integration and wholesale power arbitrage use cases.

Key facts

Companies Sumitomo Electric Industries, Ltd., Kashiwazaki IR Energy Co., Ltd., Kashiwazaki City
Chemicals Vanadium
Capacity 8,000 kWh storage (1,000 kW x 8 hours); cumulative storage 32,000 kWh including existing systems
Location Former site of Ishiji Elementary School, Kashiwazaki City, Niigata Prefecture
Timing 2026-07-08, Spring 2027 scheduled operation, FY2026 subsidy program
Partners Kashiwazaki IR Energy Co., Ltd., Kashiwazaki City
End uses Renewable energy storage, Solar power integration, Wholesale electricity market trading

Market context

Vanadium redox flow batteries store electricity in liquid electrolytes held in external tanks, so power and energy capacity can be sized independently. This makes them suited to long-duration grid storage, typically in multi-hour blocks, and they are generally valued for long cycle life and tolerance of frequent charging. Their main demand drivers are utilities and grid operators integrating variable solar and wind output, along with commercial sites that shift power to higher-price peak periods. Vanadium electrolyte is the key material cost, so project activity links directly to vanadium pentoxide and electrolyte supply chains. Each new installation adds incremental demand for electrolyte, membranes, and power conversion equipment, and it can tighten availability of vanadium feedstock when deployments cluster. Japan has been a meaningful market for these systems because of its growing solar base and policy support for storage, which is why projects of this scale attract attention from suppliers and investors.

Source: official release on sumitomoelectric.com. Summary and context written by Market Krystal.

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