Energy

Commonwealth Fusion Systems

Commonwealth Fusion Systems raises $863M Series at $3.4B valuation

$863M
Total Raised
Series
Latest Round
2018
Founded
400+
Employees
Devens, MA
1 min read

Quick Facts

Valuation
$3.4B
Latest Round Size
$863M
Latest Round Date
August 2025

Commonwealth Fusion Systems: Series Funding Round

Commonwealth Fusion Systems has successfully raised $863M in Series funding, reaching a valuation of $3.4B.

Company Overview

Nuclear fusion startup developing experimental SPARC reactor for clean energy

Funding Details

The Series round was led by Nvidia, with participation from Google, Tiger Global.

Company Information

  • Headquarters: Devens, MA
  • Founded: 2018
  • Employees: 400+
  • Category: Energy

Investment

Commonwealth Fusion Systems plans to use the funds to accelerate product development, expand its team, and scale operations globally.

About the Investors

  • Nvidia: Verified investor in Series
  • Google: Verified investor in Series
  • Tiger Global: Verified investor in Series

Key Investors

Nvidia
Lead Investor
Verified investor in Series
Google
Investor
Verified investor in Series
Tiger Global
Investor
Verified investor in Series

About the Author

Editorial Team
Editorial Team
Curated funding news from verified sources