How much funding has Commonwealth Fusion Systems raised?

Commonwealth Fusion Systems has raised $2.9B in total funding, most recently a Extension Round.

Who are Commonwealth Fusion Systems's investors?

Commonwealth Fusion Systems's investors include Eni, Tiger Global, Temasek, GV, Breakthrough Energy Ventures, Khosla Ventures.

When was Commonwealth Fusion Systems founded?

Commonwealth Fusion Systems was founded in 2018.

Where is Commonwealth Fusion Systems headquartered?

Commonwealth Fusion Systems is headquartered in Devens, Massachusetts, United States.

What industry is Commonwealth Fusion Systems in?

Commonwealth Fusion Systems operates in Climate Tech, Energy, Nuclear Energy.

How many employees does Commonwealth Fusion Systems have?

Commonwealth Fusion Systems has 501-1000 employees.

Commonwealth Fusion Systems

formerly Commonwealth Fusion

The world's largest and leading commercial fusion energy company

Devens, United States · Founded 2018 · $2.9B raised

Climate Tech

Energy

Nuclear Energy

Headquarters: Devens, Massachusetts
Employees: 501–1000
Founded: 2018
Business Model: B2B

Website: cfs.energy
Total Funding: $2.9B
Last Round: $863.0M Extension RoundAug 2025
Rounds: 5

About

Commonwealth Fusion Systems (CFS) is an MIT spinout building the world's first commercially relevant net-energy fusion machine, SPARC, using revolutionary high-temperature superconducting magnets. CFS aims to deliver cost-competitive, clean fusion energy to the grid through its ARC power plant design, combining proven tokamak science with breakthrough magnet technology to accelerate fusion commercialization.

Summary

Commonwealth Fusion Systems is a Climate Tech company based in Devens, United States, founded in 2018. It has raised $2.9B in total across 5 rounds, most recently a $863.0M Extension Round round in Aug 2025. Investors include Eni, Tiger Global and Temasek.

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