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Jimmy

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Designs and operates atomic thermal generators to massively decarbonize industry

Paris, FranceFounded 2020Energy
Valuation $500M–1B Last recorded · 2026
Headcount 100–500 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Jimmy and the history behind them.

About Jimmy

Jimmy Energy is a forward-thinking startup that designs and operates thermal generators to provide its clients with decarbonized heat at a lower cost than that obtained from fossil fuels. The company operates in the energy market, specifically focusing on industrial heat supply. Its unique selling point is the use of a micro nuclear reactor within its generators, which produces decarbonized heat, offering a sustainable and cost-effective alternative to traditional fossil fuels.

The business model of Jimmy Energy is straightforward. It involves the production, transmission, conversion, and utilization of heat. The heat produced by the micro nuclear reactor is transported in a primary circuit and then transferred to a secondary circuit via a heat exchanger. This heat is then used by industrial clients for their processes without the need for significant modifications to their existing installations.

Jimmy Energy's services are particularly beneficial for industrial clients seeking to reduce their carbon footprint and improve air quality, while also increasing their competitiveness by lowering their energy costs. The company's solutions have minimal visual impact and do not contribute to noise pollution, making them an attractive option for businesses in urban areas or those with strict environmental regulations.

In terms of revenue, Jimmy Energy makes money by selling its decarbonized heat to industrial clients. The company's competitive pricing, combined with the growing demand for sustainable energy solutions, positions it well for future growth.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2020
Headquarters
Paris, France
Employees
132
Open positions
8
Dealroom signal
77.7/100
Sub-industry
Clean Energy
Sector
Energy, Nuclear, Spinout, Thermal, Sustainable Development Goals, Nuclear Fission, Industrial Technology, Climate Tech, Novel Energy, Energy and Greentech
Technology
Hardware, Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

5 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
LATE VCOther financing Mar 2026 $88M $352M Omnes Capital · Serena · Noria Invest · Eren Groupe ↗
GRANTOther financing Nov 2023 $35M — France 2030 ↗
Showing the latest 2 of 5 recorded eventsBook a demo for the full funding history →

Growth signals

Jimmy website traffic

Latest recorded traffic for Jimmy is 6.3K monthly website visits, up 28.6% over the last three months. Jimmy's team grew 4.8% over the past year.

Latest monthly visits6.3K 3-month web change+28.6% 1-year team growth+4.8%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

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Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

12 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed5 investors entered at this stage

  • Noria Invest
  • Otium Capital
  • EREN INDUSTRIES
  • Polytechnique Ventures
  • France 2030

Series B and later5 investors entered at this stage

  • Omnes Capital
  • Serena
  • Eren Groupe
  • ADEME Investissement
  • Crédit Mutuel Impact

Other known investors2 additional known investors

  • École Polytechnique - IP Paris
  • IP Paris
Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 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.

Global footprint

Workforce and web traffic by country
Workforce by country
2 countries with
team presence
🇫🇷 France98.6%
🇬🇧 United Kingdom1.4%
2 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Jimmy on X, ranked by likes and reposts, corporate channels excluded.

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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