The Minami Hayakita Substation – Flow Battery Energy Storage System is a 15,000kW energy storage project located in Abira-Chou, Hokkaido, Japan.

The electro-chemical battery energy storage project uses flow as its storage technology. The project was announced in 2013 and was commissioned in 2015.

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The Minami Hayakita Substation – Flow Battery Energy Storage System was developed by Sumitomo Electric Industries. The project is owned by Hokkaido Electric Power (100%).

The key application of the project is renewable capacity firming.

Contractors involved

Hokkaido Electric Power and Sumitomo Electric Industries have delivered the battery energy storage project.

Additional information

The project is funded by Japan’s Ministry of Economy, Trade and Industry (METI) under its “Emergency Verification Project for Large-scale Storage Battery System in 2012” programme
The verification of SEI’s redox flow battery will last for approximately three years. The ultimate goal of the scheme is to test the performance of the system as a new way to adjust wind and solar intermittency and to develop optimal control technologies.

About Sumitomo Electric Industries

Sumitomo Electric Industries Ltd (Sumitomo) is a manufacturing company that develops, produces, markets and sells products related to electronics, info communications, automotive, industrial materials, and environment and energy. The company’s major product portfolio includes wiring harnesses, automotive hoses, car electrical equipment, telecommunication cables and equipment, optical and wireless devices, electronic wire products, flexible printed circuits and others. Sumitomo also provides air cushions for railroad vehicle, power systems, power transmission wires, tungsten and molybdenum materials, heat sinks and laser optics. The company along with its subsidiaries operates in Americas, Europe, Middle East, Africa and Asia Pacific. Sumitomo is headquartered in Osaka, Japan.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.