S
Stellaria
Energy · Grenoble, France · Founded 2023
STELLARIA provides is a new nuclear energy solutions for centuries MoreLess
Stellaria Energy is a pioneering company in the nuclear energy sector, focusing on the development and deployment of Small Modular Reactors (SMRs) with a capacity of 100MWe. These reactors are designed to be safe, efficient, and environmentally friendly, featuring a 'safe by design' approach that eliminates the risk of catastrophic failures like Fukushima. The company leverages molten salt technology, which offers a compact and high-density energy storage solution, making it a viable alternative to traditional coal and lithium-ion batteries. Stellaria Energy's SMRs are capable of stabilizing power levels rapidly, making them ideal for complementing renewable energy sources and handling the fast-changing loads of industrial facilities. The reactors also have the unique ability to regenerate their own fuel and burn old nuclear waste, contributing to a sustainable and long-term energy solution. Stellaria Energy serves a diverse range of clients, including industrial facilities and energy providers, operating in the high-value segment of peak load power production. The company's business model revolves around the sale and maintenance of these advanced reactors, generating revenue through long-term contracts and service agreements. Keywords: Nuclear energy, SMR, molten salt technology, CO2 net zero, intrinsic safety, energy storage, renewable complement, fuel regeneration, industrial power, peak load production.
Company overview
Stellaria company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2023
- Headquarters
- Grenoble, France
- Employees
- 29
- Open positions
- None listed
- Dealroom signal
- 89.3
Valuation & funding
Stellaria funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| GRANT✓Other financing | Jul 2025 | $11M | — | France 2030 | ↗ |
| EARLY VC✓Equity / VC | Jul 2025 | $25M | $101M | CEA Investissement · Audacia · Supernova Invest · At One Ventures | ↗ |
| SEED✓Equity / VC | Jan 2024 | $1.9M | $7.5M | Technip Energies · CEA Investissement · Audacia · Schneider Electric | — |
| SPINOUT✓Other financing | Jan 2023 | $0 | — | French Alternative Energies and Atomic Energy Commission - CEA | — |
Financials
Workforce over time
Available workforce history. Financial fields without reported data are omitted.
| Year | Employees |
|---|---|
| 2026 | 31 |
| 2025 | 17 |
Growth signals
Stellaria website traffic
Latest recorded traffic for Stellaria is 1.5K monthly website visits, up 25% over the last three months. Stellaria's team grew 70.6% over the past year.
Comparisons
Stellaria compared with similar companies
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Talent graph
Stellaria's talent
Source: Dealroom Talent Intelligence.
Investors
9 investors on Stellaria's cap table
Sourced from Dealroom's funding and investor records.









Global footprint
Where Stellaria has talent and traffic
team presence
In the news
Latest news about Stellaria
Recent press, funding announcements, and product moves mentioning Stellaria — open to read from the original sources.
Market sentiment
What the market is saying about Stellaria
An AI-synthesized read of the highest-engagement posts about Stellaria on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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