Private company
Commonwealth Fusion Systems
Logo: cfs.energy3
American nuclear fusion and energy company
Commonwealth Fusion Systems (CFS) is an American fusion power company founded in 2018 in Cambridge, Massachusetts, after a spin-off from the Massachusetts Institute of Technology (MIT). Its stated goal is to build a small fusion power plant based on the ARC tokamak design.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
- Industryenergy industry1
- HeadquartersDevens1
- Websitecfs.energy
- Legal formjoint-stock company1
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Commonwealth Fusion Systems (CFS) is an American fusion power company founded in 2018 in Cambridge, Massachusetts, after a spin-off from the Massachusetts Institute of Technology (MIT). Its stated goal is to build a small fusion power plant based on the ARC tokamak design.2
Timeline
- 2018Founded Founded1
Funding
Where the company's money came from, by calendar year: private offerings filed with the SEC, federal grants, loans, contracts and other assistance from USAspending.gov, and PPP loans from the SBA. Each bar links to the records below.
- Federal grants $2.9M
- Other federal assistance $48.1M
Figures by year
| Year | Federal grants | Other federal assistance | Total |
|---|---|---|---|
| 2026 | – | $28.6M | $28.6M |
| 2025 | – | $4.5M | $4.5M |
| 2024 | $1.5M | $15.0M | $16.5M |
| 2023 | $1.0K | – | $1.0K |
| 2022 | $1.0K | – | $1.0K |
| 2021 | $1.0K | – | $1.0K |
| 2020 | $1.4M | – | $1.4M |
Federal awards
Obligated amounts from USAspending.gov5, by calendar year, 2020–2026, for its registration. Obligations are what agencies committed, not always what was paid out. Contracts pay for goods and services; grants, loans and direct payments are assistance. Loans are charted at the face value of the loans listed here. An award’s amount below is its lifetime total, and some began before the years charted.
Largest grants
- Mar 1, 2021$1.5M from Department of Energy: Office Of Science Financial Assistance Program6 To COMMONWEALTH FUSION SYSTEMS LLC Award DESC0021623
- Oct 1, 2020$1.3M from Department of Energy: Advanced Research Projects Agency - Energy7 To COMMONWEALTH FUSION SYSTEMS LLC Award DEAR0001259
Links
- Websitecfs.energy1
- WikipediaCommonwealth Fusion Systems
- More imagesWikimedia Commons
- WikidataQ55316454
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1
- 2
- 3Company websiteCommonwealth Fusion Systems logo
- 4Wikimedia CommonsCommonwealth Fusion Systems photo by 4300streetcar, CC BY 4.0
- 5
- 6USAspending.govDESC0021623: Department of Energy
- 7USAspending.govDEAR0001259: Department of Energy