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Commonwealth Fusion Systems
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 ↓
Suggest an editLast verified 2026-07-22