HD Renewable Energy Japan (HDJP) has acquired a majority ownership stake in the Helios I battery energy storage system (BESS) project located in Sapporo, Hokkaido. The 50-megawatt (MW), 104 megawatt-hour (MWh) project is being developed by Manoa Energy and managed by Brawn Capital. The acquisition was finalized through a Tokumei Kumiai agreement between HDJP and Brawn Capital
Construction for the project is being handled by Hokkaido Electric, with completion and operations planned by the end of 2025. Helios I will use battery storage technology to address grid challenges, including solar energy curtailment, in the region. Hokkaido’s growing renewable energy sector has created a need for systems that store excess electricity generated during periods of high production. Stored energy can be used later during peak demand.
The project supports Japan’s energy transition and its goal to achieve carbon neutrality by 2050. It also fits into the government’s target of having renewable energy make up at least 40% of the country’s energy mix by 2040. Battery storage systems like Helios I can help stabilize the grid while supporting greater use of solar and wind power.
Brawn Capital, which manages Helios I, has a portfolio of over 1 gigawatt (GW) of BESS projects under development across Japan. This project reflects ongoing efforts to address grid stability issues caused by renewable energy integration.
Financial advisory firm Finergreen provided support to Brawn Capital during the acquisition process. This included structuring the transaction, overseeing due diligence, and coordinating negotiations with HDJP.
Helios I is part of a broader strategy to increase energy storage capacity in Japan, particularly in areas like Hokkaido where renewable energy generation is expanding. Projects like this demonstrate how energy storage can play a role in supporting local energy needs while reducing reliance on fossil fuels.
