US · clean tech · climate · energy

Who invested in Commonwealth Fusion Systems

2 rounds we have observed, with the investors named in each. Every figure below came from a named source, and where the company reported the raise to the SEC itself, that is shown beside it.

2
rounds observed
25
investors named
$1.9B
reported across those rounds
Jul 2026
most recent

The rounds

Growth · Jul 2026 · $1.0B

No investor was named in the report.

Reported by TechCrunch and 1 other

Everyone who backed them

Missing a round, or an investor who was in one? Tell us.