Commonwealth Fusion Systems headquarters details
- Street address
- 148 Sidney Street
- City
- Cambridge
- State / region
- Massachusetts
- ZIP / postal code
- 02139
- Country
- United States
- Phone
- +1 781 583 3100
- Founded
- 2018
- Website
- cfs.energy
Location map
Open in Google MapsAll Commonwealth Fusion Systems office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Cambridge HQ | Massachusetts | United States | Headquarters |
Showing the headquarters of 4 recorded locations. See every location in GraphIQ →
About Commonwealth Fusion Systems
Commonwealth Fusion Systems is headquartered in Cambridge, Massachusetts, United States. Founded in 2018, the company has 4 recorded locations and employs approximately 1,000 people worldwide.
Where is Commonwealth Fusion Systems's main office?
Commonwealth Fusion Systems's main headquarters office is located at 148 Sidney Street, Cambridge, Massachusetts 02139, United States. This is the company's primary corporate address.
Commonwealth Fusion Systems regional offices
Beyond its headquarters in Cambridge, Commonwealth Fusion Systems has recorded locations in United States.
Commonwealth Fusion Systems contact information
The main switchboard for Commonwealth Fusion Systems headquarters can be reached at +1 781 583 3100. Official website: cfs.energy.
What does Commonwealth Fusion Systems do?
Commonwealth Fusion Systems is an American company aiming to build a compact fusion power plant based on the ARC tokamak concept.
Commonwealth Fusion Systems competitors & similar companies
Frequently asked questions
Where is Commonwealth Fusion Systems headquarters?
Commonwealth Fusion Systems's headquarters is located at 148 Sidney Street, Cambridge, Massachusetts 02139, United States.
How many offices does Commonwealth Fusion Systems have?
GraphIQ records 4 locations for Commonwealth Fusion Systems, as of October 2026.
What is Commonwealth Fusion Systems's corporate address?
The corporate headquarters address is 148 Sidney Street, Cambridge, Massachusetts 02139, United States.
When was Commonwealth Fusion Systems founded?
Commonwealth Fusion Systems was founded in 2018 and employs approximately 1,000 people.
What is Commonwealth Fusion Systems's phone number?
The main phone number for Commonwealth Fusion Systems headquarters is +1 781 583 3100.
How many employees does Commonwealth Fusion Systems have?
Commonwealth Fusion Systems has approximately 1,000 employees (GraphIQ estimate, 2026).