General InformationCommonwealth Fusion Systems is a private fusion energy company based in Cambridge, Massachusetts with over 500 employees, founded in 2015 by MIT researchers to commercialize fusion power technology.
Funding & FinancialsCFS has raised over $2 billion in funding including a Series B round of $1.8 billion in 2021 led by investors including Breakthrough Energy Ventures, Tiger Global, and others, making it one of the most well-funded fusion startups globally.
Leadership & TeamCEO Bob Mumgaard founded CFS and leads the company alongside Chief Technology Officer Bob Whyte; the team includes many MIT-affiliated scientists and engineers specializing in plasma physics and superconducting magnets.
Recent ActivityCFS announced in 2024 completion of manufacturing and assembly of components for its SPARC tokamak reactor in Massachusetts, with plans to achieve fusion demonstrations by the mid-to-late 2020s.