Commonwealth Fusion Systems

Commonwealth Fusion Systems (CFS) designs and builds commercial fusion power plants intended to deliver clean, abundant energy to help close the global energy gap and address climate change. Founded in 2018 and spun out of the Massachusetts Institute of Technology, the company retains close research ties to MIT and works across fusion energy, plasma physics, tokamak design, high-temperature superconducting magnets, compact fusion devices and power plant engineering. It operates from a 50-acre campus in Devens, Massachusetts.

Its first machine, SPARC, is a compact tokamak made possible by high-temperature superconducting magnets developed in collaboration with MIT. It is designed to be the first fusion device to produce plasmas that generate more energy than they consume. SPARC is intended as the precursor to ARC, described as the first fusion power plant capable of producing net electricity, with a planned output of hundreds of megawatts of grid-connected power.

The company has raised more than $2 billion in capital, more than any other fusion energy company. CFS describes itself as mission-driven, aiming to deliver firm, zero-carbon power that is available regardless of wind, weather or season.