Commonwealth Fusion Systems

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Commonwealth Fusion Systems
Privately held company
Cambridge, Massachusetts
Number of employees

Commonwealth Fusion Systems is an American company aiming to build a compact fusion power plant based on the ARC tokamak concept.[1] The company is based in Cambridge, Massachusetts.


CFS was founded in 2018 as a spin-off from the Massachusetts Institute of Technology (MIT) Plasma Science and Fusion Center (PSFC).[2] After initial funding of $50 million in 2018 from Eni,[1] CFS closed its Series A in 2019 with a total of $115 million in funding from Eni,[3] Breakthrough Energy Ventures, Khosla Ventures, and others.[4][5] CFS raised an additional $84 million in Series A2 funding from Temasek, Equinor, and Devonshire Investors, as well as from previous investors.[6]


The company plans to focus on proving new yttrium barium copper oxide (YBCO) high-temperature superconducting magnet technology, demonstrating a large-bore, high-field (20 Tesla) magnet in 2021.[6] This magnet technology will then be used to construct SPARC, a demonstration net energy tokamak.[7] It then plans to build a power plant based on the ARC design.[1] Both SPARC and ARC plan to use deuterium-tritium fuel.

See also[edit]


  1. ^ a b c "MIT and newly formed company launch novel approach to fusion power". MIT News. Retrieved 16 April 2018.
  2. ^ Tollefson, Jeff (9 March 2018). "MIT launches multimillion-dollar collaboration to develop fusion energy". Nature. pp. 294–295. doi:10.1038/d41586-018-02966-3. Retrieved 16 April 2018.
  3. ^ Devlin, Hannah (9 March 2018). "Nuclear fusion on brink of being realised, say MIT scientists". the Guardian. Retrieved 16 April 2018.
  4. ^ Rathi, Akshat (September 26, 2018). "In search of clean energy, investments in nuclear-fusion startups are heating up". Quartz. Retrieved February 4, 2019.
  5. ^ "Commonwealth Fusion Systems Raises $115 Million and Closes Series A Round to Commercialize Fusion Energy". PR Newswire. Retrieved June 27, 2019.
  6. ^ a b Systems, Commonwealth Fusion. "Commonwealth Fusion Systems Raises $84 Million in A2 Round". Retrieved 2020-05-26.
  7. ^ "A New Approach to Fusion Energy Starts Today | MIT Department of Earth, Atmospheric and Planetary Sciences". Retrieved 2019-04-09.