Funding
Series G · Climate tech

Helion raises $465m Series G for fusion power

Thrive Capital, Alta Park Capital, Anti Fund and other investors participated in the financing.

Updated Oct 16, 2026By RoundOS Funding desk

Helion raised $465 million in Series G financing on June 4. Participants included Thrive Capital, Alta Park Capital, Anti Fund, BoxGroup, Lux Capital, Peak XV Partners, Bill Ford, Capricorn Technology Impact Funds, Lightspeed Venture Partners, Mithril Capital, Good Ventures Foundation and SoftBank Vision Fund 2.

The company develops magneto-inertial fusion technology for commercial electricity generation.

Funding history

Series G · This round$465M

Sources

  1. Helionprojectstartups.com
  2. techcrunch.com

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