en.Wedoany.com Reported - During the Franco-Japanese Economic Forum, Neoen announced the simultaneous launch of two large-scale Battery Energy Storage System (BESS) projects in France and Japan. As a subsidiary of the Canadian asset management company Brookfield, Neoen is significantly expanding its global energy storage footprint through this move.
Building France's Largest Battery Energy Storage System
Located in Vernou-la-Celle-sur-Seine, Seine-et-Marne, France, this project has a designed capacity of 248 MW / 496 MWh. Upon completion, it will become the largest battery energy storage facility in France and the first storage project connected to the French national grid operator RTE's 400 kV ultra-high voltage transmission network.
Construction is planned to start in the summer of 2026, with operations expected to commence in 2028. It will provide frequency and voltage regulation services for the Île-de-France regional grid. Nidec, as Neoen's long-term industrial partner, will be responsible for supplying the battery cells, assembling them at its factory near Saint-Étienne, and providing 20 years of operation and maintenance services.
First Foray into the Japanese Energy Storage Market
The simultaneously launched Ako battery project in Hyogo Prefecture, Japan, has a capacity of 100 MW / 400 MWh. This marks Neoen's first major investment in the Japanese market. The project signed a grid connection agreement with Kansai Electric Power Company (KEPCO) in January 2026.
Neoen will execute this project in collaboration with Equans from France and Toho from Japan. Construction work is set to begin in the coming months, with the goal of achieving commercial operation by 2028.
Globally, Neoen has a battery storage portfolio of 2.8 GW and 8.1 GWh in operation or under construction across Australia, Germany, Finland, France, Italy, Sweden, and El Salvador. The company plans to install an additional 10 GW of capacity by 2030 to further strengthen its global energy storage footprint.
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