Commonwealth Fusion Systems | Climate & Clean Energy | F4

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F4/Commonwealth Fusion Systems

Company Overview Backed By Recent Activity Similar Companies Startup DNA

Commonwealth Fusion Systems

Commonwealth Fusion Systems is the world's largest and leading commercial fusion energy company, focused on developing high-temperature superconducting magnets to enable the transition to clean, abundant fusion energy

Climate & Clean Energy

Sector

Seed

Stage

Energy production

Model

01Company Overview

Commonwealth Fusion Systems is the world's largest and leading commercial fusion energy company, focused on developing high-temperature superconducting magnets to enable the transition to clean, abundant fusion energy.

02Backed By11 investors

BEBreakthrough Energy Ventures→CFCollab Fund→FC

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Startup Intelligence by F4F4 Research Engine

Footprint Coalition

→

GIGalaxy Interactive→

KVKhosla Ventures→

LCLowercarbon Capital→

MCMy Climate Journey Collective→

PMPrime Movers Lab→

GCGigascale Capital→

SHSand Hill Angels→

SVStarlight Ventures→

03Recent Activity

FROM Starlight Ventures

Participated in Commonwealth Fusion Systems' $863M Series B2 round; Matias Mosse quoted in press release as long-time backer.

INVESTMENT·cfs.energy

AUG 28, 2025

FROM Gigascale Capital

Invested in Commonwealth Fusion Systems' $863M Series B2 to accelerate commercialization of tokamak fusion energy.

INVESTMENT·cfs.energy+1

AUG 28, 2025

04Similar Companies

RF

Renaissance Fusion

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PF

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PF

Climate & Clean Energy

F

Climate & Clean Energy

HF

Climate & Clean Energy

05Startup DNA

9

signals

Sectors
Business Model
Technology

Quick Reference

Sector

Climate & Clean Energy

Website

Visit cfs.energy ↗