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August 28, 2021

Morigasaki Water Reclamation Center – BESS, Japan

By Carmen

The Morigasaki Water Reclamation Center – BESS is an 8,000kW energy storage project located in Ota-ku, Tokyo, Japan.

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


The Morigasaki Water Reclamation Center – BESS is owned by Tokyo Metropolitan Government (100%).

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

Contractors involved

NGK Insulators and Tokyo Metropolitan Government have delivered the battery energy storage project.

Additional information

The Bureau of Sewerage, Tokyo Metropolitan Government launched an ambitious response to the Kyoto Protocol. The Bureau accounted for 45% of all the greenhouse gas emissions generated by the Tokyo Metropolitan Government, and sought to reduce emissions by instituting a number of energy efficiency measures and incorporating sodium batteries. The Morigasaki Water Reclamation Center’s ESS consists of 4 x 2 MW NGK Insulators Ltd. NaS units. The system provides load leveling and backup power.


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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