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August 30, 2021

Hitachi Automotive Plant – BESS, Japan

By Carmen

The Hitachi Automotive Plant – BESS is a 9,600kW energy storage project located in Hitachinaka, Ibaraki, Japan.

The electro-chemical battery energy storage project uses sodium based as its storage technology. The project was commissioned in 2004.


The Hitachi Automotive Plant – BESS is owned by Hitachi (100%).

The key applications of the project are electric bill management and electric energy time shift.

Contractors involved

Hitachi and NGK Insulators have delivered the battery energy storage project.

Additional information

The Hitachi Automotive Systems Group’s ESS consists of 4 x 2 MW NGK Insulators Ltd. NaS units. The system performs load leveling and backup power. When installed in 2003, this was one of the largest energy storage systems in the world.


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.

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