A total of 12 projects totaling 180MW/595.3MWh was awarded 13 billion yen through Tokyo’s FY2024 subsidy for promoting grid-scale battery storage, the metropolitan government’s document released in February 2025 shows.
The subsidy covers up to two thirds (up to three quarters if using recycled EV batteries) of development and construction costs, up to 2 billion yen per project.
The number of awarded projects in FY2024 was less than half of FY2023’s 26. However, the total capacity, was more than three times as high as the previous round’s 50.5MW/171.6MWh. Due to the larger average project size, the average amount awarded per project in FY2024 was 1.1 billion yen compared to FY2023’s 356 million.
Two projects, one being developed by NTT Anode Energy and another by Renewable Japan, were awarded the maximum 2 billion. Five others secured about a billion yen or more each. Tokyo Century was the only company to receive funding for two projects as the main applicant.
Geographically, three of the projects will be built in Ibaraki Prefecture, two in Kanagawa, Chiba, and Tochigi each, and one in Tokyo, Saitama, and Gunma each.
As Japan works to expand battery storage amid growing solar and wind capacity, METI also runs a similar subsidy scheme at the national level. In FY2024, it awarded 34.6 billion yen to 27 projects. Both programs are expected to continue in FY2025.
Recipients of Tokyo Metropolitan Government’s FY2024 Subsidy for Grid-Scale BESS Projects
- Gunma
- Minakami Chikudensho LLC, Tokyu Land, and ReEne in Minakami Town (1,191,604,000 yen)
- Tochigi
- Mirai One Co., Ltd. and Itochu Shoji in Oyama City (227,332,000 yen)
- NTT Anode Energy in Nasushiobara City (2,000,000,000 yen)
- Ibaraki
- Tokyo Century, JTU Mihomura Chikuden LLC, JFE Engineering, and Urban Energy in Miho Village (762,344,000 yen)
- GI Energy Storage No. 2 LLC and Shizen Energy in Kasama City (1,608,452,000 yen)
- Japan Decarbonization No. 1 LLC and Digital Grid in Ami Town (955,117,000 yen)
- Chiba
- Pacifico Energy Storage No. 4 LLC and Pacifico Energy in Funabashi City (1,754,542,000 yen)
- Prologis and Digital Grid in Chiba City (322,203,000 yen)
- Saitama
- Batteria Tokorozawa LLC and Renewable Japan in Tokorozawa City (2,000,000,000 yen)
- Tokyo
- Kanagawa
- Tokyo Century and MIRAI Tokyo Chikuden LLC in Yokohama City (1,737,697,000 yen)
- Tokyu Corporation and Tokyu Power Supply in Kiyokawa Village (150,454,000 yen)
