March 31, 2025

Renaissance Fusion raises €32M to radically simplify complex fusion reactors

Renaissance Fusion

Investment raised

EUR 32m

Valuation

Stage

Region

🏆 Deal of the Month · March 2025

Renaissance Fusion raised EUR 32 million in a Series A round in March 2025; the company's valuation was not disclosed. The round was backed by Credit Mutuel Impact and Lowercarbon Capital. This financing will support the development of Renaissance Fusion's compact stellarator reactor and its proprietary high-temperature superconducting magnet technology.

Renaissance Fusion — key deal facts

Company Renaissance Fusion
Founded 2020
Headquarters Grenoble, France
Amount raised EUR 32m
Valuation Valuation Remains Undisclosed
Round Series A
Investors Credit Mutuel Impact, Lowercarbon Capital
Sectors Renewable Energy

Who invested in Renaissance Fusion?

The Series A was funded by Credit Mutuel Impact and Lowercarbon Capital. The combination is notable: Credit Mutuel Impact brings mission-aligned European institutional capital, while Lowercarbon Capital is a specialist climate-tech venture firm with a track record of backing hard-science energy startups. Together they represent both regional strategic alignment and deep sector conviction in fusion energy.

What does Renaissance Fusion do?

Renaissance Fusion designs and builds compact stellarator nuclear fusion reactors that use High Temperature Superconducting (HTS) magnets and liquid metal walls to generate low-carbon electricity at scale. Its lead reactor project, named Chartreuse, is engineered to radically reduce the mechanical complexity that has historically made stellarator designs difficult to commercialize. The company also develops proprietary HTS materials with near-term applications in energy storage and medical imaging, creating a parallel revenue pathway ahead of commercial fusion. Founded in July 2020 by CEO and CTO Francesco Volpe and co-founder Martin Kupp, the company is headquartered in Grenoble, France, and is targeting commercial reactor deployment in the 2030s.

Renaissance Fusion valuation & multiples

Explore the benchmarks: Series A.

Frequently asked questions

How much did Renaissance Fusion raise in its Series A?

Renaissance Fusion raised EUR 32 million in its Series A round in March 2025.

What is Renaissance Fusion's valuation?

Renaissance Fusion's valuation was not disclosed in connection with this Series A round.

Who invested in Renaissance Fusion?

The Series A was funded by Credit Mutuel Impact and Lowercarbon Capital.

When was Renaissance Fusion founded and where is it based?

Renaissance Fusion was founded in July 2020 and is headquartered in Grenoble, France.

Source: original announcement — read the full report.

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