HD Renewable Energy Japan, a wholly-owned subsidiary of Taiwan’s HDRE, invested in Brawn Capital’s 50MW/104MWh “Helios I” grid-scale battery storage project in Sapporo City, Hokkaido, the companies announced on March 25, 2025. It secured majority interest in the project through a tokumei kumiai (silent partnership).
According to the statement, the project, which was developed by Brawn Capital’s Japan-focused Manoa Energy, is expected to be commissioned by the end of 2025. Hokkaido Electric Power will be in charge of its construction and maintenance.
“This project marks an important step forward in HDRE’s commitment to advancing energy storage solutions that support Japan’s renewable energy transition,” said Jason Chou, General Manager of HDRE. The company has been involved in multiple other BESS projects in Japan. It won two totaling 100MW in the first long-term decarbonization auction and partnered with Sun Village to develop 13 high-voltage power storage stations in the Tokyo and Chubu TSO areas.
Brawn Capital’s pipeline includes over 1GW of battery storage projects in Japan. “With this successful partnership, Brawn Capital remains focused on expanding its energy storage portfolio and advancing next-generation clean energy investments across the Asia-Pacific region,” said the company’s CEO Scott Reinhart.
The transaction, advised by Finergreen, comes amid a wave of activity in the grid-scale battery storage industry driven by increasing demand due to growing intermittent renewable capacity.
