Commonwealth Fusion Systems
Commonwealth Fusion Systems is a Devens, Massachusetts fusion-energy company founded in 2018. It develops high-temperature-superconducting magnets, the SPARC demonstration tokamak and the planned ARC commercial fusion power plant.
Key facts
| Also Known As | CFS |
|---|---|
| Business Model | Commerce |
| Legal Name | Commonwealth Fusion Systems LLC |
| Company Operating Status | Active |
| Description | Commonwealth Fusion Systems is a fusion energy company on a 60-acre campus in Devens, Massachusetts, spun out of MIT's Plasma Science and Fusion Center in 2018 and led by co-founder and chief executive Bob Mumgaard. Its bet is on high-temperature superconducting magnets, developed with MIT, which produce far stronger fields than conventional magnets and so allow a tokamak to be built much smaller and cheaper for the same output. SPARC, the net-energy demonstration machine, is being assembled at Devens and is scheduled for first plasma in 2026, with net fusion energy expected shortly after. ARC, the first grid-scale plant, is planned as the 400 MW Fall Line Fusion Power Station in Chesterfield County, Virginia. The company calls itself the largest commercial fusion energy company in the world and raised a further $1 billion in July 2026. |
| Full Address | 501 Massachusetts Avenue Cambridge, MA 02139 |
| Motto/Tagline | The surest path to limitless, clean, fusion energy |
| Wellfound ID | commonwealth-fusion-systems |
| Wikidata ID | Q55316454 |
Open roles at Commonwealth Fusion Systems
- Staff Dimensional Engineer – SPARC
- Senior Technical Project Manager
- Senior RF Test Engineer
- Senior CAD Application Engineer
- R&D Production Test Engineer
- Executive Operations Partner
- Electrical Engineer
- Director, Corporate FP&A
- Talent Acquisition Coordinator - Contract
- Supply Chain Operations Supervisor
- Staff Electrical Engineer
- R&D Technician - Second Shift
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