Fusion energy startup Helion raised a $465M Series G led by Thrive Capital, at a $15.5B valuation, nearly tripling the valuation from its January 2025 raise (Tim De Chant/TechCrunch)

Jun 08, 2026 - 01:55
Updated: 2 hours ago
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Helion fusion energy startup logo

Tim De Chant / TechCrunch:
Fusion energy startup Helion raised a $465M Series G led by Thrive Capital, at a $15.5B valuation, nearly tripling the valuation from its January 2025 raise  —  Helion, the fusion startup backed by Sam Altman, announced on Thursday that it had raised $465 million in a new funding round that values the company at $15.5 billion.

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Christopher Holloway

Christopher Holloway is the founder and director of Progressive Robot, a UK-based technology company. A full-stack engineer with more than two decades of experience, he works across PHP development, ecommerce, Linux infrastructure, technical SEO and AI automation, and writes here on technology, AI, hardware and software.

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