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Company Snapshot
Helion is a Energy company, based in Everett, Washington, USA, founded 2013 by David Kirtley, John Slough, Chris Pihl, George Votroubek. Latest valuation $15.5B (As of Jun 2026, Mining.com). Total funding $1.5B (As of Jun 2026).
Recent changes
- Jun 19, 2026Jun 19, 2026Helion Closes $465M as Fusion's Funding Boom Hits 17 Startups Over $100M Pulse story
- Jun 2026Jun 2026Raised $465M Series G at a $15.5B valuation Mining.com
- Jun 2026Jun 2026First reported total funding: $1.5B Bing News search summary of Series G coverage
- Jun 2026Jun 2026New investor: Thrive Capital Mining.com
- Jun 2026Jun 2026Valuation rose from $5.4B to $15.5B Mining.com
Funding History
2 events · sources dated per row| Date | Event | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| Jun 2026 | Series G | $465M | $15.5B | Thrive CapitalLeadunverified | Mining.com |
| Jan 2025 | Series F | $425M | $5.4B | Wikipedia |
Underlying values
| As of | Value | Method | Source |
|---|---|---|---|
| Jun 2026 | $15.5B | Reported | Mining.com |
| Jan 2025 | $5.4B | Derived | Wikipedia |
Investors
Latest Pulse
- Aug 15, 202618 Fusion Startups Have Now Raised Over $100M EachAt least 18 fusion-energy companies have raised more than $100 million each in private capital, led by Commonwealth Fusion Systems at roughly $3.94 billion and Helion at $3.2 billion in committed capital.→
- Jun 19, 2026Helion 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.→
Coverage Timeline
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Value Add Research
Related Companies
Helion FAQ
What is Helion's valuation?
Helion's valuation is $15.5B (As of Jun 2026, Mining.com).
How much has Helion raised?
Helion has raised $1.5B in total funding (As of Jun 2026, Bing News search summary of Series G coverage).
Who are Helion's investors?
Helion's investors include SoftBank Vision Fund, Thrive Capital (As of Jun 2026).
Sources & methodologyshow
Where these figures come from
- Mining.comValue Add VC data2 facts
- Bing News search summary of Series G coverageValue Add VC data1 fact
- WikipediaValue Add VC data1 fact
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.