Best Energy Companies in France
The 890 best Energy companies in France in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Tereos.
France's Energy sector has real money behind it. Our directory tracks 890 companies with $5.8 billion in disclosed funding, and the distribution is anything but flat. Newcleo leads at $685 million, a figure that puts it in a different weight class from the rest of the pack. Kyotherm follows at $309 million, with Qair at $87 million and Enersweet at $51 million rounding out the upper tier. Two unicorns have already cleared that threshold. Bpifrance, Demeter, and Eiffel Investment Group are among the most active backers, which tells you something about where institutional conviction is sitting right now.
So what's actually moving? Coverage may be flat, but the hot themes are solar electricity generation, photovoltaic systems, and community solar farms, and digital engagement is tracking that shift. Across 138 energy-related apps, median install growth is running at roughly +28% year-over-year, a signal I'd take seriously as a proxy for where end-user attention is heading. Global supply disruptions are sharpening that urgency too, as recent reporting on energy export pressures makes clear. Flexible loads and distributed energy resources are the demand drivers, and France's funding stack suggests its best-capitalized players are already positioning around exactly that.
- International grid edge study reveals countries needs and readiness f
Our analysis of 441 Energy companies
$135.1b in tracked funding; 76% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in France
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Market signals (1y) | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Tereos Producer of sugar, ethanol, and other agricultural products 53Innovation top 30%Fin. health top 30%Funding top 37%Moat top 38% All 12 signals ▾Innovationtop 30% Fin. healthtop 30% Fundingtop 37% Moattop 38% Patentstop 39% Newstop 41% Growthtop 45% Producttop 48% Talentbottom 49% Marketbottom 43% Globalbottom 43% Techbottom 26% Innovation: 22 patents (top 35% of patent-holders) · 8 product lines Fin. health: Revenue ~$134M (FY2017) · Net margin 6.8% rank vs industry peers · Fliar Intelligence Index 53/100 | $773M | 34 mo ago | 9 | Olivier Leducq CEO | WordPressApple iCloud MailMicrosoft 365+15 | 6 signals ▲20% Earnings · Announcements · Acquisition | 22 patents Sugar-based sweetener compositions and dry fruit sorbet/ice‑cream mixes | 1 award |
| 2 | Newcleo 🦄 Provider of advanced nuclear energy technologies, focused on designing, building, and operating small modular… | $685M | 4 mo ago | 430 | Luciano Cinotti Co-Founder & CSO | ContentfulJavaYouTube+10 | 5 signals ▼44% Funding · Contracts · Capital raise | 7 patents Advanced nuclear reactor core support, control rod integration, and multi‑actuation safety systems | 1 partnership |
| 3 | Sonnedix Provider of independent solar power and operates renewable energy projects | $375M | 54 mo ago | 533 | — | Apple iCloud MailSalesforceAnimate.css+14 | 15 signals ▲88% Acquisition · Capital raise · Contracts | — | 2 awards |
| 4 | Solairedirect Solar IPP and EPC company | $341M | 111 mo ago | 200 | Jean Pascal Pham Ba Co-Founder | — | — | 2 patents Waterproof, ventilated mounting structures for building-integrated photovoltaic panels. | — |
| 5 | NW Group Developer of solar and wind energy projects | $317M | 47 mo ago | 27 | Jean-Christophe Kerdelhue Founder & CEO | WordPressApple iCloud MailMicrosoft 365+19 | — | — | — |
| 6 | Kyotherm Provider of turnkey financing for industrial decarbonization projects | $309M | 1 mo ago | 9 | — | WordPressMySQLPHP+23 | 4 signals ▲300% Acquisition · Funding | — | — |
| 7 | SPIE Designs, constructs, operates and maintains renewable energy and energy efficiency projects | $239M | 49 mo ago | 49,333 | Dean Paton Managing Director | Proton MailApple iCloud MailLeaflet+20 | — | 4 patents Electromagnetic shielding cabins and vehicle-based photometric mapping of street lighting | 1 partnership |
| 8 | Technique Solaire Developers of solar photovoltaic power plants | $214M | 31 mo ago | 160 | — | WordPress Block EditorWordPressMySQL+33 | 5 signals Acquisition · Contracts · M&A | — | 1 job opening · 1 partnership |
| 9 | Voltalia Provider of independent power producer using renewable energy sources | $180M | 65 mo ago | 1,444 | Benoit Kuciel Chief of Staff to the CEO | DrupalPHPSalesforce+24 | 17 signals ▲21% Contracts · Announcements · Earnings | — | 1 partnership |
| 10 | Valorem Wind energy producer | $145M | 54 mo ago | 450 | Jean Yves Grandidier Co-Founder & Chairman | JaliosJavaBootstrap+16 | — | 2 patents Cold storage and refrigeration systems for cold rooms, focusing on thermal energy storage. | 1 partnership · 1 expansion |
| 11 | TSE Provider of photovoltaic and agrovoltaic development services | $142M | 37 mo ago | 200 | — | WebflowApple iCloud MailMicrosoft 365+19 | 6 signals Acquisition · Regulatory · Contracts | 15 patents Photovoltaic mounting structures, cable‑stay anchoring, and production optimization software. | — |
| 12 | CVE Independent producer of decentralized renewable energies | $140M | 39 mo ago | 350 | — | WordPress Block EditorWordPressMySQL+21 | — | 5 patents Agricultural disinfectant formulations for plant protection | — |
| 13 | Mylight150 Developer of solar energy projects | $109M | 30 mo ago | — | Virgile Suavet Co-Founder & Co-CEO | Node.jsAmazon Web ServicesOVHcloud+21 | — | — | — |
| 14 | ZE Energy Independent solar power producer | $108M | 19 mo ago | 36 | Mathieu Lassagne CEO | WordPressMySQLPHP+8 | — | 29 patents Battery regeneration diagnostics, safe battery workstations, and oil decontamination technologies | 1 partnership |
| 15 | Akuo Energy Renewable Energy developer | $94M | 68 mo ago | 18 | — | DrupalPHPApache HTTP Server+12 | — | 2 patents Integrated water collection systems for photovoltaic solar panels | 1 job opening · 2 expansions |
| 16 | Smart Energies Provider of renewable energy production through development, financing, construction, and operation of energy… | $94M | 24 mo ago | 51 | Vianney l Estang CEO | WordPressMySQLPHP+23 | — | — | — |
| 17 | LANGA INTERNATIONAL Renewable energy company specializing in the development, building, and operation of renewable energy… | $93M | 28 mo ago | 23 | Gilles Lebreux Founder & CEO | WordPressMySQLPHP+16 | — | — | — |
| 18 | Qair Developer of solar energy projects | $87M | 8 mo ago | 600 | Louis Blanchard CEO | WordPressMySQLPHP+25 | 3 signals ▼40% Acquisition · Contracts | — | 1 job opening · 1 internship · 1 partnership |
| 19 | CARBONEX Manufacturer of charcoal & renewable carbon | $76M | 94 mo ago | 150 | Max Inglis Co-Founder | — | — | — | — |
| 20 | NAAREA Developer of nuclear energy project | $66M | 30 mo ago | 140 | Ivan Gavriloff Co-Founder | BugHerdNode.jsThree.js+13 | — | 25 patents Patents concentrated in computing, sensing & instrumentation | — |
| 21 | NEoT Infrastructure fund focused on renewable energy investments | $64M | 25 mo ago | 22 | Tomoaki Okubo Deputy CEO | — | — | — | 1 partnership |
| 22 | Lithium de France Provider of geothermal heat and lithium extraction, aiming to accelerate the transition to a low-carbon… | $56M | 39 mo ago | — | Guillaume Borrel CEO | WordPressMySQLPHP+23 | — | — | — |
| 23 | NewHeat Provides solar heat and waste heat recovery solutions | $56M | 30 mo ago | 39 | Pierre Delmas Co-Founder & Technical Director | WordPressMySQLPHP+15 | — | 5 patents Control and modulation of output power in solar‑thermal power plants | — |
| 24 | Enersweet Enersweet is a group specializing in energy efficiency services for businesses and communities. | $51M | 3 mo ago | — | Felix Lenglart Partner & Investment Director | — | — | — | 1 job opening |
| 25 | Volta Group Developer of solar and wind energy projects | $42M | 32 mo ago | 40 | — | WordPressMySQLPHP+17 | — | 2 patents Wall-mounted cable guiding systems for organized electrical installations | 1 expansion |
| 26 | Proviridis Fuel distribution company | $39M | 68 mo ago | 40 | — | WordPressMySQLPHP+14 | — | 2 patents High-power charging systems for heavy-duty electric vehicles | — |
| 27 | Spark Cleantech Offering deCarbonized hydrogen as a substitute to natural gas for greener industry | $35M | 6 mo ago | 5 | Patrick Peters Co-Founder & CEO | WordPressMySQLPHP+15 | — | — | — |
| 28 | Neoen Independent power producer in solar wind and biomass | $28M | 72 mo ago | 169 | Jacques Veyrat Founder | WordPress Block EditorWordPressMySQL+19 | 23 signals ▼39% Contracts · Announcements · Acquisition | — | 3 expansions |
| 29 | Engie Provider of electricity generation and other energy services | $27M | 27 mo ago | 96,454 | Catherine Macgregor CEO | Cart FunctionalityDrupalAlgolia+25 | — | 668 patents Advanced gas sampling, measurement, liquefaction, and biogas conditioning technologies. | — |
| 30 | HEXANA Developer of modular, flexible fourth-generation nuclear reactor and thermal storage systems | $27M | 16 mo ago | — | Sylvain Nizou Co-Founder & CEO | WordPressMySQLPHP+15 | — | — | 1 partnership |
| 31 | Citron Provider of energy management advisory and platform services | $22M | 38 mo ago | 100 | Vianney Raskin Founder | WordPressApple iCloud MailGoogle Workspace+31 | — | — | — |
| 32 | ENERGO Developer of energy transmission equipments | $18M | 25 mo ago | 9 | Vincent Simmoneau CEO | WordPressMySQLPHP+15 | — | 20 patents Plasma‑catalytic reactors for hydrogen, syngas, and CO₂ conversion processes | — |
| 33 | Jimmy Operator of thermal generators providing decarbonized heat to industrial clients | $17M | 43 mo ago | 36 | — | WebflowSwipercore-js+13 | — | 6 patents Patents concentrated in textiles | 1 job opening |
| 34 | Renaissance Fusion Manufacturer of magnetic confinement fusion | $16M | 15 mo ago | 23 | Francesco Volpe Founder | Cart FunctionalitySquarespace CommerceSquarespace+17 | — | 45 patents High‑temp superconductor deposition, modular magnetic confinement, lithium‑hydride extraction, lithium isotope separation, and mod | 1 award |
| 35 | TotalEnergies Energy company that produces and markets a range of energy products and services | $16M | 35 mo ago | 280 | Nicolas Falier Product Owner | Cart FunctionalityPrestaShopMySQL+23 | — | 156 patents Patents concentrated in computing, sensing & instrumentation | — |
| 36 | DualSun Solar installation company | $15M | 45 mo ago | 40 | Jakob Jamot CTO | WordPress Block EditorWordPressApple iCloud Mail+26 | — | 37 patents Patents concentrated in mechanical & energy engineering | — |
| 37 | Selfee Provider of renewable electricity consumption services | $14M | 38 mo ago | 6 | Sandra Magnin Co-Founder | — | — | — | 2 job openings |
| 38 | TLS Geothermics Developer of geothermal projects | $13M | 45 mo ago | 7 | Jean Luc Auxietre Co-Founder | — | — | — | — |
| 39 | Sublime Energie Limited information available | $13M | 27 mo ago | 8 | Bruno Adhemar Co-Founder | WordPress Block EditorElementorWordPress+22 | — | — | — |
| 40 | Waga Energy Provider of solid waste management and recycling services | $11M | 28 mo ago | 10 | Benoit Lemaignan Co founder & Investor | WordPressMySQLPHP+19 | 17 signals Leadership · Earnings · Regulatory | 60 patents Cryogenic separation and liquefaction technologies for upgrading landfill biogas to biomethane | 1 expansion |
| 41 | Sunology Provider of solar solutions for homes | $11M | 36 mo ago | 15 | — | ShopifyGSAPAlpine.js+35 | — | — | — |
| 42 | Heliup Heliup is a company that develops and produces photovoltaic solutions for large roofs on buildings. | $11M | 3 mo ago | 4 | Julien Gaume Co-Founder | WordPressMySQLPHP+12 | — | — | — |
| 43 | Solarock Provider of residential solar panel installation services | $8M | 11 mo ago | — | Joseph-Marie Valleix Co-Founder | Framer SitesLeafletYouTube+18 | — | — | 2 expansions · 2 awards |
| 44 | Qotto Manufacturer of solar powered products | $8M | 40 mo ago | 200 | Fabrice De Gaudemar Co-Founder | WordPressMySQLPHP+12 | — | — | — |
| 45 | Groupe EH2 Developer of large-scale renewable energy power projects | $6M | 36 mo ago | — | Mathieu Haesebroeck Co-Founder | — | — | — | — |
| 46 | BW Ideol Provider of floating offshore wind energy platforms | $4M | 5 mo ago | 74 | — | DrupalPHPNginx+8 | — | 59 patents Marine rope core coating technologies and offshore turbine launch systems | 1 expansion |
| 47 | Ensol Provider of solar installation services for homes | $3M | 31 mo ago | — | Martin d'Hoffschmidt Co-Founder | SentryNode.jsChakra UI+24 | — | — | — |
| 48 | Syroco Provider of AI-driven maritime voyage optimization software. | $3M | 17 mo ago | — | Yves Montcheuil Co-Founder | HubSpot CMS HubAmazon Web Servicescore-js+16 | — | — | — |
| 49 | Highcast Delivers live and on-demand youth sporting events to players, coaches, families, and fans | $2M | 20 mo ago | — | Flore Lasteyrie Co-Founder | — | — | — | 1 job opening · 2 internships · 1 launch |
| 50 | NEEXT Provider of engineering expertise and solutions, working to develop and promote world-class engineering… | $2M | 5 mo ago | — | Jean Maillard CO-Founder of NEEXT Engineering | — | — | — | 3 job openings |
Top 12 Energy companies in France
#1
Newcleo 🦄Series B · Paris, Ile de France · founded 2021 · 430 employees$684.8Mraised▾
Provider of advanced nuclear energy technologies, focused on designing, building, and operating small modular lead-cooled fast reactors. The company focuses on small modular reactors that recycle nuclear waste into fuel, closing the fuel cycle for sustainable power. The reactors use liquid lead cooling and fast neutron flux to avoid long-lived radioactive waste like plutonium and reduce the need for geological storage.
- Feb 2026Series B$85M
- Sep 2024Series B$151M
- May 2024Series B$109.4M
- Mar 2023Series B—
#2
Series C · Paris, Ile de France · founded 2011 · 9 employees$309.3Mraised▾
Provider of turnkey financing for industrial decarbonization projects. It finances the entire investment cost through heat supply or energy performance contracts. The company participates in the co-development of decarbonization projects, leveraging technical, contractual, and financial expertise. This allows energy consumers to outsource operational risks and focus on their core business. Financing is offered for projects up to a certain investment amount, with contracts ranging from seven to twenty-five years. Collaboration with energy service companies and project developers ensures a turnkey solution encompassing design, construction, operation, maintenance, and financing.
- Apr 2026Conventional Debt$234.6M
- Mar 2022Series C$49.2M
- Apr 2019Series B$20.3M
- Jul 2016Series A$5.3M
#3
Series C · Paris, Ile de France · founded 2022$51.4Mraised▾
Enersweet is a group specializing in energy efficiency services for businesses and communities. They recently acquired LICIEL Environnement, a leading provider of software solutions for property. Enersweet is focused on the energy transition and offers services related to energy efficiency.
- Mar 2026Series C$51.4M
#4
Seed · Montpellier, Occitanie · founded 2017 · 600 employees$87.5Mraised▾
Developer of solar energy projects
- Oct 2025Conventional Debt$63.9M
- May 2024Conventional Debt$4.2M
- Mar 2024Conventional Debt$19.3M
- Oct 2022Seed—
#5
Series A · Gif sur Yvette, Ile de France · founded 2022 · 5 employees$35Mraised▾
Spark Cleantech is a company that offers deCarbonized Hydrogen as a substitute for natural gas to decarbonize industries. They develop local production sources of clean hydrogen using a novel method of producing hydrogen called methane plasmalysis. They also provide laboratory and office space to energy-focused startups through their incubator program, Spark Cleantech Accelerator.
- Dec 2025Conventional Debt$15.2M
- Dec 2025Series A$19.8M
#6
Series B · Le Bourget Du Lac, France · founded 2022 · 4 employees$10.5Mraised▾
Heliup is a company that develops and produces photovoltaic solutions for large roofs on buildings, such as commercial, industrial, and logistics buildings. They offer solar panel solutions for clean energy generation.
- Mar 2026Series B$18.6M
- Oct 2023Series A$10.5M
#7
Seed · La Ciotat, Provence Alpes Cote d Azur · founded 2010 · 74 employees$3.9Mraised▾
Provider of floating offshore wind energy platforms. It offers a Damping Pool - a technology that optimizes the stability and performance of the floating wind turbine. Additionally, it offers FloatGen and Hibiki.
- Jan 2026Seed—
- Jan 2021Grant (prize money)$393.7K
- Sep 2020Grant (prize money)$58.5K
- Oct 2018Grant (prize money)$2.9M
#8
Series C · Paris, Ile de France · founded 2018 · 36 employees$108.4Mraised▾
Independent solar power producer
- Nov 2024Series C$58.9M
- Nov 2021Series B$45.1M
- Jun 2020Series A$4.5M
#9
Seed · Belfort, Territoire De Belfort · founded 2022$2.1Mraised▾
Provider of engineering expertise and solutions, working to develop and promote world-class engineering expertise in power plants. It is a company specializing in the development and promotion of engineering expertise in the energy sector. It provides world-class engineering expertise and solutions for clients in the industry. The company focuses on delivering innovative and effective engineering services to drive business success.
- Dec 2025Seed$2.1M
#10
Series B · Aix-en-Provence, Provence-Alpes-Cote d'Azur · founded 2023$27.1Mraised▾
Developer of modular, flexible fourth-generation nuclear reactor and thermal storage systems. It designs an energy platform combining fast neutron sodium-cooled modular nuclear reactors with a thermal storage system. The technology offers high-temperature heat and decarbonized electricity production, along with the capacity for high-temperature heat storage, which can be converted into electricity. This approach aims to stabilize the electrical grid and provide a flexible energy solution. It also focuses on revalorizing used nuclear fuels to reduce dependence on imported uranium and support the production of synthetic fuels, enhancing energy sovereignty.
- Jan 2025Grant (prize money)$10.8M
- Jan 2025Series B$16.3M
#11
Funding Raised · Moussy le Vieux, Ile de France · founded 1999 · 9 employees$772.9Mraised▾
Producer of sugar, ethanol, and other agricultural products derived from beets, wheat, alfalfa, sugarcane, and corn. The company's operations encompass the entire value chain, from raw material sourcing and processing to the production and marketing of a diverse portfolio of products for the food, energy, animal nutrition, and chemical sectors. These products include various sugars, ethanol, bioethanol, maltodextrin, vegetable proteins, starches, and derivatives, along with fibers for animal feed. The company also engages in activities related to industrial processes, energy production, and green chemistry.
- Aug 2023Grant (prize money)$3.9M
- Nov 2022Grant (prize money)$894.3K
- Oct 2020Conventional Debt$585.9M
- Oct 2018Grant (prize money)$192K
#12
Series A · Montigny-les-Cormeilles, lle-de-France · founded 2023$8.3Mraised▾
Provider of residential solar panel installation services. They offer a complete solution, from initial consultation and design using AI-powered shadow analysis to installation and ongoing maintenance. The company utilizes high-quality components from reputable manufacturers and provides flexible financing options. Their services include project management, handling all necessary administrative tasks and ensuring compliance with regulations. Post-installation, they offer continuous monitoring and support to optimize energy production and consumption. The installation process is designed to be efficient, typically completed within two months.
- Jul 2025Series A$8.3M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Grid Energy Storage is moving in France
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 899 France-affiliated papers.
- Centre National de la Recherche Scientifique303
- École Polytechnique Fédérale de Lausanne72
- Université Grenoble Alpes43
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives39
- Réseau sur le Stockage Electrochimique de l'énergie36
- Battery (electricity)2→41
- Supercapacitor4→40
- Electrolyte1→33
- Cathode1→29
- Electrode1→28
- Battery (electricity)8→97
- Renewable energy10→82
- Photovoltaic system4→54
- Electrolyte1→45
- Microgrid4→47
- Renewable energy3→24
- Photovoltaic system1→12
- Electrochemistry1→10
- Electrolyte2→9
- Cathode1→8
Where energy storage is researched across France
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing energy storage patents in France
France energy storage patent filing is accelerating — 712 filings from 363 assignees (2016–2025), led by BLUE Solutions, Commissariat Energie Atomique, Peugeot Citroen Automobiles; annual filings 76→92.
- BLUE Solutions181
- Commissariat Energie Atomique86
- Peugeot Citroen Automobiles76
- Batscap69
- Valeo Systemes Thermiques64
- Valeo Equip Electr Moteur53
- Centre NAT RECH Scient41
- Renault SAS39
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.