About
Brawn Energy is a renewable energy company headquartered in Tokyo, Japan specializing in Energy Storage.
Brawn Energy is a developer of utility-scale, extra high voltage (EHV) battery energy storage systems (BESS) in Japan. The company identifies, develops, owns and operates transmission-connected storage projects intended to support grid stability, absorb renewable surplus and meet peak demand. Its portfolio includes projects in Kyoto, Shiga, Tochigi, Yamagata and Hokkaido, with a pipeline of approximately 1 GW of EHV BESS projects at various development stages. The company covers the full project lifecycle, including site acquisition, permitting, grid coordination, construction management and community engagement. It was established following the commercial operation of a 50 MW / 104 MWh EHV project in Hokkaido and builds on the legacy of its sister company, Manoa Energy.
Headquarters
Focus areas
Products & services
Business models
Value chain
Service areas (1)
Extra High Voltage battery energy storage development
Develops, owns and operates utility-scale extra high voltage battery energy storage systems connected to Japan's transmission network.
Locations
Headquarters
Tsao Hibiya 9F 3-3-13, 105-0004, Tokyo, Japan
Service regions
Projects
5Project Kyotanabe
137 MW / 548 MWh utility-scale battery energy storage system serving the Kansai grid. Acquired during early development and advancing through technical review, procurement and construction planning.
Project Maibara
50 MW utility-scale battery energy storage system serving the Kansai grid. Advanced to Ready-to-Build status; Brawn Energy leads site acquisition, permitting and stakeholder coordination and will act as construction and delivery manager.
Project Mooka
50 MW pre-Ready-to-Build battery energy storage system in the development phase, with permitting and technical preparations underway.
Project Tsuruoka
50 MW utility-scale battery energy storage system under development. Grid connection capacity secured with Tohoku Electric Power Network; procurement, detailed design and construction planning in progress.
Project Helios
Early utility-scale battery energy storage system in Hokkaido, operating since December 2025. Developed by sister company Manoa Energy and later transferred. Referenced as the 50 MW / 104 MWh Hokkaido EHV project.
Credentials & affiliations
Partnerships
Manoa Energy
