Helical Fusion secures JPY 2.3 billion in Series A funding to advance its roadmap for the world's first steady-state net power fusion plant.
Amount Raised
¥2.3 Billion
Round Type
Series A
TokyoManufacturingEnergyRenewable EnergyInvestors
Description
Helical Fusion Co., Ltd. has successfully closed its Series A round, raising JPY 2.3 billion (USD 15 million) to accelerate its Helix Program. This funding brings the total capital raised to JPY 5.2 billion (USD 35 million). The company aims to leverage Japan's manufacturing capabilities in the pursuit of commercial fusion
Quick answer
Helical Fusion raised ¥2.3 Billion in a Series A round, dated July 11, 2025. Investors: Public Financial Institutions, 17 Other Institutions, Keio Innovation Initiative and SBI Investment. Helical Fusion is based in Tokyo, Tokyo, Japan.
- How much did Helical Fusion raise?
- Helical Fusion raised ¥2.3 Billion in a Series A round on July 11, 2025.
- Who invested in Helical Fusion?
- Public Financial Institutions, 17 Other Institutions, Keio Innovation Initiative and SBI Investment are named as investors in this round.
- What does Helical Fusion do?
- Helical Fusion is a private fusion energy developer based in Japan, focusing on commercial fusion with a stellarator design.
- Where is Helical Fusion based and how big is it?
- Helical Fusion is based in Tokyo, Tokyo, Japan. Fundz records about 19 employees.
- Who are the decision-makers at Helical Fusion?
- Fundz holds 1 contact at Helical Fusion, including the Co-founder, CEO. Names and contact details are shown to Fundz members.
Source: Fundz verified event record.
Who else raised in Energy and Renewable Energy around the same time
Companies in the same sectors as Helical Fusion that raised within 45 days of this round, from Fundz verified event records.
- OSW raised $5.5M (Funding Round) on August 21, 2025.
- Aalo raised $100M (Series B) on August 19, 2025.
- Energy Vault raised $299M (Funding Round) on August 9, 2025.
- Lyten raised $200M on July 28, 2025.
- Estes Energy raised $11M (Seed) on July 23, 2025.
- Jälle Technologies raised $2.3M (Pre-Seed) on July 16, 2025.
Who to call at Helical Fusion, and when
A new round usually means Helical Fusion is about to hire and buy. The teams that reach out first get the meeting.
- An alert the day Helical Fusion raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at Helical Fusion, from your own LinkedIn network
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Funding Insights
What this usually meansHelical Fusion raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
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