Product Reports Resources Pricing Login Book a demo

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
client focusb2btechnologyHardwaretechnologyDeep Techsub industryClean Energybusiness modelManufacturingsectorSpinoutsectorSustainable Development GoalssectorNuclear FissionsectorClimate TechsectorNovel EnergysectorEnergy and GreentechsectorObservatoire DeeptechsectorGreentechsectorNIF defense security and resilience

Valuation & funding

Stellaria funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GRANTOther financing Jul 2025 $11M France 2030
EARLY VCEquity / VC Jul 2025 $25M $101M CEA Investissement · Audacia · Supernova Invest · At One Ventures
SEEDEquity / VC Jan 2024 $1.9M $7.5M Technip Energies · CEA Investissement · Audacia · Schneider Electric
SPINOUTOther financing Jan 2023 $0 French Alternative Energies and Atomic Energy Commission - CEA
Showing 4 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 31
2025 17
Company filings, research estimates and Dealroom dataOpen the full financial model →

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.

Latest monthly visits1.5K 3-month web change+25% 1-year team growth+70.6%
Monthly website visits29 observations · Dec 2023–Jul 2026
Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Stellaria compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Stellaria's talent

Book a demo to see the people
Team profiled 1 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

9 investors on Stellaria's cap table

Sourced from Dealroom's funding and investor records.

Seed 6 investors entered at this stage
Technip Energies
CEA Investissement
Audacia
Schneider Electric
Supernova Invest
France 2030
Series A 2 investors entered at this stage
At One Ventures
Exergon
Other known 1 additional known investor
French Alternative Energies and Atomic Energy Commission - CEA

Global footprint

Where Stellaria has talent and traffic

Workforce by country
2 countries with
team presence
🇫🇷 France95.8%
🇺🇸 United States4.2%
2 countries shown

In the news

Latest news about Stellaria

Recent press, funding announcements, and product moves mentioning Stellaria — open to read from the original sources.

See all news

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

See Stellaria’s full profile on Dealroom

Request a free trial to see the complete deal history, financials, people graph and growth signals.

Takes under a minute. Already use Dealroom? Log in.