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Energy Series B Founded 2021

Helical Fusion

Provider of nuclear energy services. Founded in 2021, headquartered in Chiyoda City, Japan. The company has raised $44.0M in funding at the series b stage. The team comprises 19 (Jun 30, 2026) employees. Backed by investors including Sony Innovation Fund, Plug and Play Tech Center, SBI Investment, SBIR. Helical Fusion operates in the Nuclear Energy sector. The company focuses on Power Producer. Additional backers…

📍 Chiyoda City, Japan · Nuclear Energy,

Funding snapshot

Last roundSeries B
Amount$17M
Date28 April 2026
Total raised$44M
Team size19

About

Provider of nuclear energy services. Founded in 2021, headquartered in Chiyoda City, Japan. The company has raised $44.0M in funding at the series b stage. The team comprises 19 (Jun 30, 2026) employees. Backed by investors including Sony Innovation Fund, Plug and Play Tech Center, SBI Investment, SBIR. Helical Fusion operates in the Nuclear Energy sector. The company focuses on Power Producer. Additional backers include Toyoda Gosei, Keio Innovation Initiative, E-Cloud, GomunoInaki, among others. The company has a team of 19 employees. The company is categorized under Energy > Nuclear Energy; Environment > Nuclear Energy. Its business model spans Nuclear Energy > Power Producer.

Business model

Nuclear Energy > Power Producer

Institutional investors

Sony Innovation Fund Plug and Play Tech Center SBI Investment SBIR Toyoda Gosei Keio Innovation Initiative E-Cloud GomunoInaki NICHIAS Konoike Transport MITANI SANGYO Makoto Naruge Kazunori Asada Hideto Fujino Kei Tanaka

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