Commonwealth Fusion

Company research

Public company, workplace, funding, and market signals

Updated Jul 29, 2026

Overview

MIT spinout and privately held energy-technology company building commercial fusion systems with high-temperature superconducting magnets; flagship SPARC demonstration machine is intended to validate net-energy fusion and pave the way for ARC power plants.

Primary product

SPARC tokamak fusion demonstration machine

Founded

2018

Headquarters

Devens, Massachusetts, United States

Team size

501-1000

Industry

Energy Technology

Sub-industry

Fusion Energy

Offices

117 Hospital Rd, Devens, MA 01434

148 Sidney Street, Cambridge, MA

Business model

Long-term power purchase agreements for future fusion electricity

High-temperature superconducting magnet manufacturing and supply

Technology licensing and related engineering collaborations

Funding

Stage

Series B2

Total raised

$2.9B

Latest round

Series B2 · Aug 2025

Latest amount

$863M

Series B2

Aug 2025 · Not disclosed

$863M

DOE Milestone Program award

Jun 2024 · U.S. Department of Energy

$15M

Series B

Dec 2021 · Tiger Global Management

$1.8B

May 2020 · Temasek

$84M

Series A

Jun 2019

$115M

Initial equity investment

Mar 2018 · Eni

$50M

People & investors

Leadership

Bob Mumgaard

Chief Executive Officer and Co-founder

Brandon Sorbom

Chief Science Officer and Co-founder

Jennifer Ganten

Chief Global Affairs Officer

Joe Paluska

Chief Marketing Officer

Rick Needham

Chief Commercial Officer

Alex Mozdzanowska

Chief People Officer

Alex Creely

Chief Engineer, ARC Conceptual Design / Director, Tokamak Operations

Founders

Dan Brunner

Co-Founder and former Chief Technology Officer

Dennis Whyte

Co-founder; Professor of Nuclear Science and Engineering, MIT

Investors

Work & culture

Mission-driven, fast-paced, and autonomy-oriented; public culture signals emphasize integrity, execution, impact, self-critique, diversity, and responsible AI use.

Compensation

Public careers pages promise competitive compensation with equity; some Lever postings publish salary ranges and mention equity and benefits.

Benefits

Competitive compensation with equity

13 company-wide holidays

Flexible vacation days

10 sick days

Generous parental leave policy

Health insurance

Dental insurance

Vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

Product & market

Pricing

Not publicly standardized; CFS appears to monetize through long-term PPAs/offtake contracts for future electricity, plus magnet supply and technology licensing while the company is still pre-commercial.

Differentiators

—High-temperature superconducting magnet technology developed with MIT
—Compact tokamak approach designed to lower cost and size versus legacy fusion concepts
—SPARC as a commercially relevant net-energy demonstration machine
—ARC as the planned grid-scale commercial power plant
—Vertical integration of magnet R&D, manufacturing, and plant development
—Peer-reviewed physics validation and major commercial counterparties already signed

Technology

High-temperature superconducting magnets

Tokamak fusion systems

Python

SQL

Databricks

Snowflake

dbt

Apache Spark

Ansys

CATIA

PTC Windchill

Jira

Confluence

NetSuite

SCADA

Mendix

Odoo

NVIDIA Omniverse/OpenUSD

Siemens NX

Teamcenter

Customers

Google

Eni

Dominion Energy

Realta Fusion

Type One Energy

Competitors

General Fusion

Helion Energy

Tokamak Energy

TAE Technologies

Zap Energy

Focused Energy

Scale & contact

Estimated revenue

USD 1M-$10M

Estimated monthly visits

20.2K

Traffic estimate as of Jun 2026

info@cfs.energy (781) 583-3100

Latest news

CFS named first international partner in UKAEA’s LIBRTI program

Commonwealth Fusion Systems · Jul 2026

CFS became the first international company in UKAEA’s LIBRTI program, gaining access to blanket-testing infrastructure to validate ARC tritium-blanket design and net tritium production.

Commonwealth Fusion Systems Announces Equity Investment by Abu Dhabi-Based Plynth Energy

Commonwealth Fusion Systems · Jun 2026

CFS said Abu Dhabi government-owned fund Plynth Energy acquired a minority stake, adding another strategic backer as the company moves toward commercialization.

Commonwealth Fusion Systems Builds on Learnings From SPARC to Publish Five Peer-Reviewed Papers Validating the Physics of the ARC Fusion Power Plant

Commonwealth Fusion Systems · Jun 2026

CFS published five peer-reviewed Journal of Plasma Physics papers validating ARC physics, co-authored by 58 scientists, strengthening the technical basis for the first commercial plant.

A*STAR and Commonwealth Fusion Systems sign a collaborative research agreement

Commonwealth Fusion Systems · May 2026

CFS expanded supply-chain and research collaboration in Singapore through an A*STAR agreement.

Commonwealth Fusion Systems Becomes First Fusion Company to Apply to PJM Interconnection, the Largest U.S. Wholesale Electricity Market

Commonwealth Fusion Systems · Apr 2026

CFS said it was the first fusion company to apply to join PJM, a major grid step toward integrating its Virginia ARC project into the electricity market.

Jobs and careers at Commonwealth Fusion

95 jobs at Commonwealth Fusion

Assistant General Counsel – Commercial & Corporate

Hybrid

Legal

Devens, MA

Today

Hybrid

Full-time