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Commonwealth Fusion Systems

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Compact fusion power enabled by superconducting magnet technology

Harvard, United StatesFounded 2018Energy
Valuation $5–10B Last recorded · Jul/2026
Headcount 1–2k Current team size
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Commonwealth Fusion Systems and the history behind them.

At a glance

Founded
2018
Headquarters
Harvard, United States
Sector
Energy
Power Law
Unicorn$1–10B valuation tierThoroughbred$100M+ revenue

Knowledge graph

News, research, reports and resources connected to this company by Dealroom
News Ex-DeepMind duo raises $3.7M to build fusion's software backbone Sep 8, 2026 News Fusion's funding boom: a record 2026 as capital piles into the frontier Jul 30, 2026 News Proxima Fusion raises €411M to build Europe's biggest fusion bet Jul 7, 2026 Market map US Novel Energy Startups Jun 25, 2026

Investors

58 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A5 investors entered at this stage

Series B and later53 investors entered at this stage

  • Starlight Ventures
  • DFJ Growth
  • Moore Strategic Ventures
  • Eni
  • Development Bank of Japan
  • Equinor Ventures
  • Soros Fund Management
  • Coatue Management
  • Massachusetts Institute of Technology
  • Mitsui
  • HOF Capital
  • Alphabet | Google
  • Mitsubishi
  • Lowercarbon Capital
  • Sumitomo Mitsui Trust Bank
  • JERA
  • NEVA SGR
  • Tiger Global
  • Eni Next
  • Time Ventures
  • Eric Schmidt
  • The Engine
  • JIMCO Technology Fund
  • Emerson Collective
  • FootPrint Coalition
  • Mitsui Fudosan
  • John Doerr
  • Breakthrough Energy Ventures
  • Schooner Capital
  • Stanley Freeman Druckenmiller
  • Google AI
  • Khosla Ventures
  • Sumitomo Mitsui Banking
  • Planet First Partners
  • Woori Venture Partners US
  • Fine Structure Ventures
  • JS Capital Management
  • Gigascale Capital
  • Bill Gates
  • Brevan Howard Asset Management
  • NTT
  • Jgc
  • Fujikura
  • Mitsui O.S.K. Lines
  • Galaxy Interactive
  • Counterpoint Global (Morgan Stanley)
  • Kansai Electric Power
  • Safar Partners
  • NVentures
  • Future Ventures
  • Gates Frontier
  • FFA Private Bank
  • Senator Investment Group

Talent

Book a demo to see the people
Employees mapped 1,081 incl. 6 AI specialists
Founders Hidden — book a demo/100 quality score
Key operators 10 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia 4 alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Alumni founders

4 startups

Former Commonwealth Fusion Systems employees who went on to found companies, sorted by Dealroom signal score.

Tulum EnergyEst. 2024
Max PieriItaly
Signal score90
Beyond Reach LabsEst. 2023
PCPele CollinsUnited States
Signal score86
Muon VisionEst. 2019
TBTancredi BottoUnited Kingdom
Signal score65
&AIEst. 2024
Herbert TurnerUnited States
Signal score56
Explore the full alumni networkBook a demo

Global footprint

Workforce and web traffic by country
Workforce by country
10 countries with
team presence
🇺🇸 United States97.4%
🇨🇦 Canada0.4%
🇫🇷 France0.4%
🇬🇧 United Kingdom0.4%
🇩🇪 Germany0.3%
Top 5 of 10 shown
Web traffic by country
71K monthly visits
across markets
🇺🇸 United States44.5%
🇨🇦 Canada10.3%
🇭🇰 Hong Kong9.3%
🇦🇺 Australia5.5%
🇯🇵 Japan3.8%
Top 5 markets shown

Patents

Estimated portfolio value
$5M

31 active patent families included in this estimate.

A patent family groups patent filings for the same invention. Source: Dealroom · PatSnap.

Explore the patent portfolioPatent records, technology areas and peer comparisonsBook a demo

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Commonwealth Fusion Systems on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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