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Commonwealth Fusion Systems

USA

Commonwealth Fusion Systems is a commercial fusion energy company that develops high-temperature superconducting magnets and tokamak fusion systems. It builds fusion demonstration machines and power plants intended to provide clean, net-positive energy to the power grid.

verified 17 July 2026

↗ Commonwealth Fusion Systems Builds on Learnings From SPARC to Publish Five Peer-Reviewed Papers Validating the Physics of the ARC Fusion Power Plant | Commonwealth Fusion Systems↗ Commonwealth Fusion Systems↗ Home | Commonwealth Fusion Systems

Fact sheet

Connections

Recent developments

  • The White House Office of Science and Technology Policy (OSTP) and Office of Management and Budget (OMB) released FY2028 R&D priorities on July 21, explicitly highlighting fusion energy as a priority area, a positive policy signal for companies like Commonwealth Fusion Systems.

    Read more ↗fusionindustryassociation.org4 Aug

  • Commonwealth Fusion Systems and MIT were jointly granted US Patent 12700530 for passive quench protection techniques for non-insulated superconducting magnets, a key safety and reliability technology for HTS magnet systems.

    Read more ↗exa.ai4 Aug

  • Commonwealth Fusion Systems raised $1B from pension funds in what is described as a fusion industry first, with institutional capital beginning to treat fusion as an infrastructure investment. SPARC is reported to be 80% complete.

    Read more ↗techtimes.com31 Jul

  • TechCrunch reports that Commonwealth Fusion Systems has now raised $4 billion in total from investors over seven years, raising questions about a potential IPO timeline for the best-funded fusion startup.

    Read more ↗techcrunch.com30 Jul

  • Commonwealth Fusion Systems announced a $1 billion equity financing round on July 30, 2026, with a varied group of investors supporting continued work on its commercial fusion power plant.

    Read more ↗powermag.com30 Jul

  • Commonwealth Fusion Systems closed a $1 billion funding round, bringing its total capital raised to $4 billion. This is the largest single funding round among fusion energy companies since CFS's own $1.8 billion round in 2021.

    Read more ↗prnewswire.com30 Jul

  • Commonwealth Fusion Systems is confirmed as a speaker at TechCrunch Disrupt 2026 (October 13–15, Moscone Center, San Francisco), appearing alongside Helion, Inertia, and Bloom Energy on the Smart Systems Stage to discuss commercial fusion's path to powering AI infrastructure.

    Read more ↗techcrunch.com27 Jul

  • The UK Atomic Energy Authority enlisted Commonwealth Fusion Systems as its first international partner in the LIBRTI (Lithium Breeding Tritium Innovation) program, a £220M UK government initiative to demonstrate that a fusion reactor can breed its own tritium fuel by converting lithium using the machine's own neutrons.

    Read more ↗autonocion.com26 Jul

  • Commonwealth Fusion Systems is expected to announce a major new financing round imminently, building on its nearly $3 billion already raised (including an $863 million round last year). In June, Abu Dhabi-owned early-stage fund Plynth Energy was reported to be participating in the new round.

    Read more ↗impactalpha.com24 Jul

  • Bob Mumgaard, Co-Founder and CEO of Commonwealth Fusion Systems, was featured at a CSIS event titled 'Is the United States Winning the Fusion Race?', highlighting CFS's prominent role in the U.S. fusion energy landscape.

    Read more ↗csis.org22 Jul

Links

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