R
Renaissance Fusion
Simplified stellarator fusion reactors with HTS magnets
About Renaissance Fusion
Renaissance Fusion is a French fusion energy company developing a simplified stellarator, a magnetic confinement fusion reactor designed to produce steady, low-carbon electricity. Its approach replaces complex three-dimensional coils with simple cylindrical modules, aiming to make stellarators smaller, cheaper and easier to build.
The core technologies are high-temperature superconducting (HTS) magnets and liquid metal walls. Instead of winding narrow superconducting tapes, the company deposits HTS films directly onto wide surfaces and patterns the coils by laser, and it is building machines to manufacture wide HTS tapes in-house. Flowing liquid lithium walls shield structures from neutrons, extract heat and breed tritium fuel.
The company plans to supply modular reactor components, with training and consulting, to engineering and construction firms and utilities building fusion power plants. Before that, it intends to sell its HTS and liquid metal technologies to markets such as energy storage, medical imaging, mobility and computing. It operates from the Grenoble area and from an Italian subsidiary near Pisa.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2020
- Headquarters
- Fontaine, France
- Employees
- 102
- Open positions
- None listed
- Dealroom signal
- 92.9/100
- Sub-industry
- Clean Energy
- Sector
- Energy, Sustainable Development Goals, Nuclear Fusion, Climate Tech, Novel Energy, Energy and Greentech, Observatoire Deeptech, Hard Tech, Greentech, Superconductors
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- B2B
News
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES AOther financing | Mar 2025 | $35M | $141M | Lowercarbon Capital · Credit Mutuel | ↗ |
| SEEDOther financing | Jan 2023 | $17M | $66M | HCVC · Positron ventures · Norrsken VC · Lowercarbon Capital | ↗ |
Growth signals
Latest recorded traffic for Renaissance Fusion is 4.2K monthly website visits, up 31.3% over the last three months. Renaissance Fusion's team grew 8.5% over the past year.
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed5 investors entered at this stage
Unruly Capital
HCVC
Positron ventures
Norrsken VC
Lowercarbon Capital
Series A1 investor entered at this stage
Credit Mutuel
Other known investors1 additional known investor
Creative Destruction Lab
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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