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Helion Energy

EnergyActiveRedmond, Washington, USAFounded 2013Website ↗

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  1. Type One Energy Raises $200M For Fusion PowerType One Energy raised $200 million in Series B funding to advance its stellarator fusion design toward a 2034 commercial power plant.→
  2. Helion Closes $465M as Fusion's Funding Boom Hits 17 Startups Over $100MHelion Energy, the Sam Altman-backed fusion startup, closed a $465 million round at a reported $15.5 billion valuation -- the standout in a sector where 17 companies have now each raised over $100 million and total private fusion investment has topped $13 billion. AI's insatiable power demand is turning fusion from science project into a fundable energy bet.→

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  1. Jun 19, 2026FUNDINGHelion Closes $465M as Fusion's Funding Boom Hits 17 Startups Over $100M$465M→

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FUNDING

Helion Closes $465M as Fusion's Funding Boom Hits 17 Startups Over $100M

Illustration for: Helion Closes $465M as Fusion's Funding Boom Hits 17 Startups Over $100M
FUNDING$465M

Helion Closes $465M as Fusion's Funding Boom Hits 17 Startups Over $100M

Helion Energy, the Sam Altman-backed fusion startup, closed a $465 million round at a reported $15.5 billion valuation -- the standout in a sector where 17 companies have now each raised over $100 million and total private fusion investment has topped $13 billion. AI's insatiable power demand is turning fusion from science project into a fundable energy bet.

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