Company Profile
- Startup Name: Challenergy Inc. (株式会社チャレナジー)
- Stage: Growth-stage / Series C
- Location: Room 1, Center of Garage, 1-16-3 Yokokawa, Sumida-ku, Tokyo 130-0003, Japan (with a joint venture, Challenergy Philippines Inc., in Cainta, Rizal, Philippines)
- Website: https://challenergy.com/en/
- Business Content: Challenergy is a Japanese cleantech startup founded in October 2014 by CEO Atsushi Shimizu in response to the Fukushima nuclear disaster, with the vision of “Bringing innovation to wind power generation and supplying safe and secure energy to all mankind.” The company develops next-generation vertical-axis wind turbines, most notably its proprietary Magnus-type wind turbine, which combines Magnus force with a vertical axis to be resistant to changes in wind speed and direction — making it suitable for typhoon-prone regions where conventional propeller turbines fail. Its product lineup also includes Savonius-type Type D (for disaster-resilient emergency power) and Type A (snow- and ice-resistant) small wind turbines. The company is targeting both the Japanese market and off-grid electrification in island nations such as the Philippines.










