The Minami-Hayakita substation – Battery Energy Storage System is a 17,000kW energy storage project located in Abira, Hokkaido, Japan. The rated storage capacity of the project is 51,000kWh.

The electro-chemical battery energy storage project uses flow as its storage technology. The project was announced in 2020 and will be commissioned in 2022.


The Minami-Hayakita substation – Battery Energy Storage System is owned by Hokkaido Electric Power (100%).

The key application of the project is grid supportive services.

Contractors involved

Hokkaido Electric Power is the owner. Sumitomo Electric Industries is the technology provider for the project.

Sumitomo Electric Industries is the EPC contractor for the project.

Additional information

The new storage system will be set up at Minami-Hayakita substation located in the Hokkaido town of Abira. The battery system will operate from April 1, 2022, until March 31, 2043.


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.