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Commonwealth Fusion Systems
@CFS_energy
On a mission to deliver clean fusion energy fast enough to meet humanity’s biggest challenges with SPARC® and ARC™.
Devens, Massachusetts, USA
cfs.energy
Joined March 2017
366
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21.5K
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  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Oct 28, 2025
    Big update: Half of our vacuum vessel, the very heart of our SPARC fusion machine, has landed in Devens, Massachusetts. The vacuum vessel is the donut-shaped chamber inside SPARC that'll house our fusion fuel — a superhot cloud of charged particles called a plasma. The delivery
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    39K
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Jun 30, 2025
    Historic news for CFS: We’ve signed a landmark agreement with @Google, a multifaceted partnership that dramatically advances our commercial fusion energy mission: ⚡️Google signed an offtake agreement for 200 megawatts of power from our first ARC power plant ⚡️Google is
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    Commonwealth Fusion Systems
    @CFS_energy
    Dec 17, 2024
    Fusion is coming... to Chesterfield County, Virginia. In an enormous development for CFS and for the commercialization of fusion energy, we've committed to build the world's first grid-scale fusion power plant, ARC, in Virginia. We'll independently finance, build, own, and
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    85K
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Dec 1, 2021
    CFS has raised >$1.8 billion in Series B funding to commercialize clean, limitless fusion energy. This is a diverse group of investors that believe in CFS & see commercial fusion energy as a game changing tech in the clean energy transition. #fusionenergy
    cfs.energy
    Commonwealth Fusion Systems Raises $1.8 Billion in Funding to Commercialize Fusion Energy |...
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Sep 12, 2022
    Check out the latest construction photos from our commercial fusion campus in Devens, Massachusetts. We’re on track to demonstrate commercially relevant net energy with SPARC in 2025. And by the end of the year, our new manufacturing facility will be completed.
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Aug 28, 2025
    Today, Commonwealth Fusion Systems announced we’ve raised $863 million in a new funding round — the second largest investment of committed capital into a deep tech or clean tech company ever. And the largest was our $1.8 billion Series B round in 2021. This Series B2 funding,
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    50K
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Oct 16, 2025
    It’s time to bring the new computing power of AI to fusion energy. Today, Commonwealth Fusion Systems and @GoogleDeepMind — giants in these two fields — revealed that we’ve joined forces to explore how AI can improve our SPARC fusion machine. Our researchers have begun applying
    18K
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Sep 8, 2021
    CFS and @MIT #PSFC have successfully tested the world’s strongest high temperature superconducting magnet -- the key technology on our path to commercial fusion! Read our exciting announcement ow.ly/GZAU50G5WAN
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Dec 19, 2024
    It’s happening. ARC, the world’s first grid-scale fusion power plant, is coming to Chesterfield County, Virginia. When we start generating power in the early 2030s, it'll be a colossal moment that'll open the grid to new clean, zero-carbon power that's available on demand.
    13K
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Jun 6, 2023
    The @BONDbuild construction crew has been busy assembling bridge cranes in the Tokamak Hall. Soon, we'll start assembling SPARC!
    21K
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    May 1, 2024
    We’re revolutionizing #FusionEnergy. Our High-Temperature Superconductor (HTS) magnets are: ✅ Tested and peer-reviewed ✅ Breaking world records with a 20 tesla field strength ✅ Reducing the cost per watt of a fusion power plant by a factor of almost 40 ✅ Meeting the
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  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Dec 12, 2022
    Today's a big day for CFS, as we've officially moved in to our new company headquarters! Devens, Massachusetts will become the birthplace of commercially relevant, net-positive fusion energy.
  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    Mar 14, 2025
    Today, while many contemplate pie, we still can't stop thinking about donuts. Here's one half of SPARC's vacuum vessel, the donut-shaped chamber where the fusion reaction will occur, making its way through the fabrication process. Once completed, we'll ship the two halves to our
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  • user avatar
    Commonwealth Fusion Systems
    @CFS_energy
    May 18, 2023
    Here’s our VP of Operations Darby Dunn standing in front of a life-size rendering of SPARC inside the CFS magnet factory.
    36K