SMFL Mirai Partners, a Sumitomo Mitsui Finance and Leasing subsidiary focused on real estate and energy, agreed to acquire three high-voltage grid-scale battery storage projects from Sun Village, the developer and EPC announced on June 6, 2025.
According to the statement, all three assets will be 2MW/8.3MWh and used for trading in the wholesale, balancing, and capacity markets.
The first project will be located in Matsusaka City, Mie Prefecture, in the Chubu TSO area and is scheduled for December 2025 commissioning. The remaining two projects will be in Nihonmatsu City and Futaba District, both in Fukushima Prefecture in the Tohoku TSO area, and are expected to come online in January and February 2026, respectively.
SMFL Mirai Partners previously disclosed plans to add 1.75MW/8.2MWh BESS to one of its solar power plants. It also holds a 5% economic interest in and provided project finance for the 15MW/48MWh Himeji Power Storage Station with planned October 2025 COD. However, the three Sun Village-developed projects mark the company’s first-known direct participation in grid-scale storage.
Sun Village has expanded from solar, in which it has been involved since its founding, into battery storage. It both develops its own projects and provides development and engineering, procurement, and construction (EPC) services to third parties. Earlier this year, it signed memorandums of understanding with Sungrow and Huawei, targeting to procure 500MWh of BESS from each. It plans to gradually develop and build 250 assets totaling 500MW.
