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Commonwealth Fusion Systems

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The Tokamak Times

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The SPARC cryostat base being lifted into place in the SPARC facility

Fusion & Tech, March 25, 2025

CFS takes its next step toward fusion energy: assembling the SPARC tokamak


Fusion & Tech, February 14, 2025

How CFS is building a fusion factory, not just a single fusion machine


CFS Business, February 11, 2025

CFS flexes magnet-manufacturing muscle to build the fusion ecosystem


CFS Business, January 30, 2025

DOE program funds university, lab fusion research at CFS’ SPARC and other private sites

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SPARC tokamak hall

CFS Business, October 22, 2026

How an $85M federal award would help CFS, fusion energy, and U.S. chip industry

A panoramic view shows the interior of Alcator C-Mod, a type of donut-shaped fusion machine called a tokamak, at the Massachusetts Institute of Technology’s Plasma Science and Fusion Center. Credit: MIT Plasma Science and Fusion Center

Energy Innovators, Fusion & Tech, September 30, 2026

How the Alcator C-Mod tokamak blazed the CFS trail to fusion power

Inside the SPARC Cryogenic plant

Fusion & Tech, September 16, 2026

Cryogenics: How we’ll make our fusion machine magnets colder than Pluto

The two halves of the SPARC tokamak seen from above

Fusion & Tech, August 28, 2026

Why CFS is confident we’ll demonstrate net fusion energy: Q>1

An illustration of the ARC tokamak with two bystanders for size comparison

CFS Business, Climate & Policy, August 5, 2026

SPARC progress, DOE Milestone approvals reflect CFS power plant maturity

Alex Creely, Chief Engineer for ARC, answers questions about our ARC physics basis papers

Energy Innovators, Fusion & Tech, July 21, 2026

Four CFS physicists answer your burning questions about our ARC power plant

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