The Rokkasho Village Wind Farm – BESS is a 34,000kW energy storage project located in Rokkasho, Aomori, Japan.

The electro-chemical battery energy storage project uses sodium based as its storage technology. The project was commissioned in 2008.


The Rokkasho Village Wind Farm – BESS was developed by Japan Wind Development .

The key applications of the project are electric supply reserve capacity – spinning, renewable capacity firming and renewable energy time shift.

Contractors involved

Japan Wind Development and NGK Insulators have delivered the battery energy storage project.

Additional information

The project was commissioned in 2008. The batteries provide greater wind integration for electricity produced at night during periods of low demand, subsequently sold during the day and times of higher demand. The batteries can also be used to provide spinning reserve and frequency response. To protect them from corrosive salty air in the area, they are kept in suitable housing and consist of 17 sets of 2 MW battery units. They are monitored from a single control centre at the site, using smart grid monitoring and controls provided by Yokogawa Electric Corporation.

About Japan Wind Development

Japan Wind Development Co Ltd (JWD) is a renewable energy company that operates and develops wind power generation plants. The company offers operation and maintenance, construction and development of wind power plants. In addition, it also develops green power system integration technology. JWD’s power plants include Choshi Obama Wind Power Station, Choshi Kazeigaura Wind Power Station, Rokkasho village wind power plant, Atsumi Wind Power Station, Kamogawa wind power plant, Rokkasho-mura Nibami Wind Power Station, Womb power plant, Fukikoshi terrace wind farm, Esuda North Wind Power Station, Tohaku Wind Power Station, Ichihara Wind Power Station, and others. The company operates its power plants in Japan and Germany. JWD is headquartered in Tokyo, 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.