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Commonwealth Fusion Systems

Devens, US · founded 2018
L0 · Energy & Power
power developersstartupprivateseries B

Commonwealth Fusion Systems is developing compact, high-field tokamak fusion power systems to deliver clean and limitless energy. The company leverages groundbreaking high-temperature superconducting magnet technology to build its SPARC demonstration reactor. It targets long-term commercialization to supply baseload clean energy and permanently offset traditional carbon emissions.

Ecosystem functionLeads the compact high-field superconducting tokamak fusion segment, supported by a historic multi-billion dollar Series B and Google clean energy agreements.

Business modelTokamak fusion reactor power generation sales

Revenue—
Valuation—
Last round$1.8Bled by Temasek Holdings · 2021
Sources · 3 ↓
  1. https://engineventures.com/companies/commonwealth-fusion-systems
  2. https://en.wikipedia.org/wiki/Commonwealth_Fusion_Systems
  3. https://jimco.com/en/portfolio/commonwealth-fusion-systems/
Suggest an editLast verified 2026-07-22
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