# Helical Fusion Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/helical-fusion-co

- Industry: Power & Utilities
- Headquarters: Tokyo, Japan
- Website: www.helicalfusion.com
- Total disclosed funding: $21M
- Latest round: Series A (Jul 11, 2025)
- Investors on record: 22

## About

Based in Tokyo, Japan, and founded by Khalid Aldoseri in 2021, Helical Fusion Co., Ltd., is a start-up company that aims to develop a fusion reactor from the helical method. Helical Fusion was co-founded by Junichi Miyazawa, Takaya Taguchi (President and CEO), Nagato Yanagi (Board member), and Takuya Goto (Board Member). In December 2025, Helical Fusion Co., Ltd. raised JPY 870 million in series A funding from Ecrowd Inc. and GOMUNOINAKI CO., LTD. This round was part of a larger JPY 3.4 billion series A funding. This round was part of a larger JPY 3.4 billion series A funding. Helical Fusion develops stationary fusion reactors using helical magnetic confinement of high-temperature plasmas using a pair of superconducting helical coils with a double-helix structure similar to DNA, for a sustainable source of power generation. The firm aims to provide a sustainable source of base energy by designing a fusion reactor with elemental technology. The company will use the funding to accelerate the Helix Program by expanding development resources and strengthening the team to ensure rapid progress.

## Funding rounds

- Series A, Jul 11, 2025, $16M — Mizuho Capital, Tokai Tokyo Investment, SBI Investment, Nissay Capital, Keio Innovation Initiative, Deepcore, OKB Capital, Toyoda Gosei Co., Ltd., Leave a Nest Capital, coconala Skill Partners, Okano Valve Manufacturing Co. , Ltd., Hakobune, Daiwa House Ventures, X&, YAMADA SHOKAI Holding, Noden, Aoki Super Co.,LTD., YNF
- Seed, Apr 5, 2023, $5.8M — Mitsubishi UFJ Capital, MITSUI MINING & SMELTING CO.,LTD., SMBC Venture Capital, SBI Investment, Nissay Capital, AIZAWA Investments

## Investors

- Mitsubishi UFJ Capital (https://capitalatlas.ai/funds/mitsubishi-ufj-capital) — Seed
- MITSUI MINING & SMELTING CO.,LTD. — Seed
- SMBC Venture Capital (https://capitalatlas.ai/funds/smbc-venture-capital) — Seed
- SBI Investment (https://capitalatlas.ai/funds/sbi-investment) — Seed, Series A
- Nissay Capital (https://capitalatlas.ai/funds/nissay-capital) — Seed, Series A
- AIZAWA Investments (https://capitalatlas.ai/funds/aizawa-investments) — Seed
- Mizuho Capital (https://capitalatlas.ai/funds/mizuho-capital) — Series A
- Tokai Tokyo Investment (https://capitalatlas.ai/funds/tokai-tokyo-investment) — Series A
- Keio Innovation Initiative (https://capitalatlas.ai/funds/keio-innovation-initiative) — Series A
- Deepcore (https://capitalatlas.ai/funds/deepcore) — Series A
- OKB Capital (https://capitalatlas.ai/funds/okb-capital) — Series A
- Toyoda Gosei Co., Ltd. — Series A
- Leave a Nest Capital (https://capitalatlas.ai/funds/leave-a-nest-capital) — Series A
- coconala Skill Partners — Series A
- Okano Valve Manufacturing Co. , Ltd. — Series A
- Hakobune (https://capitalatlas.ai/funds/hakobune) — Series A
- Daiwa House Ventures (https://capitalatlas.ai/funds/daiwa-house-ventures) — Series A
- X& (https://capitalatlas.ai/funds/x) — Series A
- YAMADA SHOKAI Holding — Series A
- Noden — Series A
- Aoki Super Co.,LTD. — Series A
- YNF — Series A