Commonwealth Fusion Systems
Commonwealth Fusion Systems is a Cambridge, Massachusetts-based research and development company developing fusion power systems based on ARC tokamak reactors.
Also Known As
Commonwealth Fusion
CFS
AngelList URL
B2X
Business Model
Commerce
CIK Number
Legal Name
Commonwealth Fusion Systems LLC
Company Operating Status
Active
Country
Crunchbase URL
CTO
Date Incorporated
2018
Email Address
press@cfs.energy
info@cfs.energy
Facebook URL
Founded Date
2018
0
Full Address
501 Massachusetts Avenue Cambridge, MA 02139
Instagram URL
Funding Round Investor
IRS Number
823,262,257
Latest Funding Round Date
August 28, 2025
Latest Funding Round Amount (USD)
863,000,000
Latest Funding Type
Legal classification
LinkedIn URL
Motto/Tagline
The surest path to limitless, clean, fusion energy
Number of Employees (Ranges)
501 – 1,000
0
Phone Number
+13086460681
Pitchbook URL
Spun Out From
Technologies Used
Total Funding Amount (USD)
3,012,000,008
Twitter URL
Official Website
Wellfound ID
Wikidata ID
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