# List of energy companies in the Nord department

Tamtam tracks 42 energy companies headquartered in the Nord department. This list ranks the 30 largest by number of employees on LinkedIn, led by Dalkia, Ramery and JEUMONT Electric. Their median headcount is 55. Half of them were founded in 2006 or later. The most common headquarters are Lille (7), Villeneuve-d'Ascq (4) and La Madeleine (2).

The Nord department hosts a mix of energy-related companies, ranging from large established groups to mid-sized firms focused on renewable energy. Dalkia, with over 14,500 employees, specializes in renewable energy development and energy savings. JEUMONT Electric manufactures alternators and electric motors, while Ramery focuses on road construction and urban development. Helexia Group provides sustainable energy solutions, and InnoVent develops wind and solar farms. Vallourec Oil & Gas France is active in oil and gas operations.

Most companies on this list are involved in renewable energy, with a strong emphasis on solar photovoltaic solutions. Companies like Agriwatt, Sunelis, IZEN Energy Systems, Ciel & Terre International, and ESCOFI Energies Nouvelles design, install, and maintain solar power plants, indicating a significant regional specialization in this sector.

🇫🇷 Nord · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Dalkia](https://www.tamtam.ai/c/dalkia) (dalkia.fr)<br>Invests, develops renewable energy, and assists clients for energy savings, CO2 reduction by maintaining and operating industrial, commercial, and residential facilities. | Environmental Services | 🇫🇷 Saint-André-lez-Lille | 14,557 |  |
| 2 | [Ramery](https://www.tamtam.ai/c/ramery) (ramery.fr)<br>Specializing in all aspects of road construction and urban development, this company in Northern France offers services in public works, industrial infrastructure, and civil engineering | Construction | 🇫🇷 Erquinghem-Lys | 949 | 1972 |
| 3 | [JEUMONT Electric](https://www.tamtam.ai/c/jeumont-electric) (jeumontelectric.com)<br>A major player in the electricity production and conversion market, manufacturing alternators and specific electric motors for various applications with industrial expertise | Industrial Machinery Manufacturing | 🇫🇷 Jeumont | 646 | 1900 |
| 4 | [Helexia Group](https://www.tamtam.ai/c/helexia-group) (helexia.group)<br>Helexia provides sustainable energy solutions for industrial and commercial buildings, including energy audits, photovoltaic power plants, energy management, and electric mobility services | Services for Renewable Energy | 🇫🇷 La Madeleine | 380 | 2010 |
| 5 | [Vallourec Oil & Gas France](https://www.tamtam.ai/c/vallourec-oil-and-gas-france) (vallourec.com)<br>A mining & metals company based in France, specializing in oil and gas operations, located in Aulnoye-Aymeries | Oil and Gas | 🇫🇷 Aulnoye-Aymeries | 128 | 1899 |
| 6 | [InnoVent](https://www.tamtam.ai/c/innovent) (innovent.fr)<br>Wind and solar farm development, construction, operation, Africa expansion, research and development in new materials, biogas, energy storage. | Renewable Energy Power Generation | 🇫🇷 Villeneuve-d'Ascq | 119 | 2001 |
| 7 | [D'Hondt Thermal Solutions](https://www.tamtam.ai/c/d-hondt-thermal-solutions) (dh-ts.com)<br>A leader in Heat Exchange, providing know-how, products, and services with a legacy of excellence for over 60 years Ready for a brighter future | Oil and Gas | 🇫🇷 Valenciennes | 116 |  |
| 8 | [Helexia France](https://www.tamtam.ai/c/helexia-france) (helexia.green)<br>Support organizations' CSR strategies through energy master planning, efficiency programs, renewable energy production, and continuous improvement aligned with ISO 50001. | Business Consulting and Services | 🇫🇷 La Madeleine | 96 |  |
| 9 | [Agriwatt](https://www.tamtam.ai/c/agriwatt) (agriwatt.fr)<br>Designing, installing, and maintaining solar photovoltaic power plants for businesses, industries, farms, and local authorities, offering various solutions including rooftop and ground installations, carports, storage batteries, and electric vehicle charging stations. | Services for Renewable Energy | 🇫🇷 Seclin | 91 | 2008 |
| 10 | [Sunelis](https://www.tamtam.ai/c/sunelis) (sunelis.com)<br>Specialized in solar photovoltaic, the company designs, installs, and maintains solar power plants, providing services for a variety of clients | Renewables & Environment | 🇫🇷 Fretin | 77 | 2008 |
| 11 | [IZEN Energy Systems nv](https://www.tamtam.ai/c/izen-energy-systems-nv) (izen.eu)<br>A sustainable company specializing in renewable energy solutions, with a team of 160 employees and partnerships with key companies in the industry ISO-certified with skilled installers | Renewable Energy Semiconductor Manufacturing | 🇫🇷 Lille | 75 | 1987 |
| 12 | [STECON Group](https://www.tamtam.ai/c/stecon-group) (steconengineering.com)<br>A UAE-based company specializing in [industry/service] | Oil and Gas | 🇫🇷 Lille | 74 |  |
| 13 | [Groupe REVOLT](https://www.tamtam.ai/c/groupe-revolt) (revolt-groupe.com)<br>Specializes in eco-responsible rental, installation of lighting and energy equipment, electric vehicle charging, and decarbonization support for industries and events. | Equipment Rental Services | 🇫🇷 Hasnon | 57 | 2012 |
| 14 | [Ciel & Terre International](https://www.tamtam.ai/c/ciel-and-terre-international) (ciel-et-terre.net)<br>Specialist in floating photovoltaic systems, providing design, manufacturing, project management, financing, and consulting for renewable energy projects worldwide. | Services for Renewable Energy | 🇫🇷 Sainghin-en-Mélantois | 55 | 2006 |
| 15 | [ESCOFI Energies Nouvelles](https://www.tamtam.ai/c/escofi-energies-nouvelles) (escofi.fr)<br>Family-owned renewable energy group in France developing and operating solar and wind projects, with 90 MW installed capacity and 400 MW under development in Europe | Electric Power Generation | 🇫🇷 Villeneuve-d'Ascq | 55 | 1988 |
| 16 | [AX GROUP](https://www.tamtam.ai/c/ax-group) (ax-group.com)<br>The company offers innovative solutions to reduce energy waste and promote the ecological transition in various markets through cutting-edge technologies | Industrial Machinery Manufacturing | 🇫🇷 Bailleul | 45 | 2008 |
| 17 | [RP Global France](https://www.tamtam.ai/c/rp-global-france) (rp-global.com)<br>Develops, invests, builds, operates, and produces independent electricity from wind, solar, and battery storage solutions, focusing on sustainable energy. | Renewable Energy Power Generation | 🇫🇷 Lille | 44 | 2008 |
| 18 | [SADTEM](https://www.tamtam.ai/c/sadtem) (sadtem.com)<br>A global industrial player specializing in electric power equipment for medium and high voltage applications, particularly in electric traction, energy production, and distribution | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Douai | 41 | 1929 |
| 19 | [ENERGO](https://www.tamtam.ai/c/energo-loos) (energo.green)<br>Conversion of CO2 and biogas into renewable energy and green chemistry products, promoting sustainable and eco-friendly industrial solutions. | Renewable Energy Power Generation | 🇫🇷 Loos | 36 | 2018 |
| 20 | [PEGASE](https://www.tamtam.ai/c/pegase) (pegase-energies.com)<br>A company specializing in fuel transport and distribution solutions for civil and military applications, adhering to strict regulations, and part of AX GROUP enhancing energy efficiency | Industrial Machinery Manufacturing | 🇫🇷 Lille | 32 |  |
| 21 | [RossiniEnergy](https://www.tamtam.ai/c/rossinienergy) (rossinienergy.com)<br>Company accelerating sustainable mobility with electric vehicles and renewable energy by designing and manufacturing smart, scalable, Made-In-France charging stations | Renewable Energy Equipment Manufacturing | 🇫🇷 Villeneuve-d'Ascq | 28 | 2017 |
| 22 | [TPF-Utilities France](https://www.tamtam.ai/c/tpf-utilities-france)<br>A company based in the Lille region specializing in water treatment, energy (HVAC, renewable energy), and energy optimization, offering diverse job opportunities in technical management | Environmental Services | 🇫🇷 Fretin | 28 | 2000 |
| 23 | [FAVIER SETREM](https://www.tamtam.ai/c/favier-setrem) (faviersetrem.fr)<br>A machinery company located in Lille, France, specializing in machinery manufacturing and production | Machinery Manufacturing | 🇫🇷 Lille | 22 | 1928 |
| 24 | [Sarasin Actor](https://www.tamtam.ai/c/sarasin-actor) (actor.fr)<br>Specializes in industrial valve automation with design, assembly, certifications, and after-sales support for global energy and chemical sectors. | Oil and Gas | 🇫🇷 Sequedin | 22 | 1956 |
| 25 | [MATLEX Énergies](https://www.tamtam.ai/c/matlex-energies) (matlex.fr)<br>Located in the heart of Pévèle, MATLEX specializes in selling and installing stoves, inserts, and fireplaces, offering personalized solutions with various fuel options | Renewable Energy Power Generation | 🇫🇷 Cappelle-en-Pévèle | 20 | 2006 |
| 26 | [PHOTEOS - Energie Photovoltaïque](https://www.tamtam.ai/c/photeos-energie-photovoltaique) (photeos.fr)<br>PHOTEOS is a partner in solar energy for professionals in Hauts-de-France, specializing in design, installation, and maintenance of photovoltaic systems | Solar Electric Power Generation | 🇫🇷 Orchies | 18 |  |
| 27 | [Soltis France](https://www.tamtam.ai/c/soltis-france) (soltisfrance.com)<br>Designing photovoltaic solutions, helping professionals, communities, industries, and farmers achieve energy autonomy through innovative solar installations, reducing carbon footprint and optimizing energy production. | Renewable Energy Power Generation | 🇫🇷 Villeneuve-d'Ascq | 15 | 2021 |
| 28 | [NOC Energy](https://www.tamtam.ai/c/noc-energy) (nocenergy.com)<br>Offers high-temperature electrification and thermal storage solutions, enabling industries to produce low-carbon products, reducing fossil fuel dependence. | Renewable Energy Equipment Manufacturing | 🇫🇷 Lille | 13 | 2023 |
| 29 | [Transition Énergétique](https://www.tamtam.ai/c/transition-energetique)<br>The company specializes in clean energy solutions, with a focus on promoting renewable sources and sustainable practices for a greener future | Renewable Energy Semiconductor Manufacturing | 🇫🇷 Lille | 13 |  |
| 30 | [Ramery Génie thermique Lille & Beauvais](https://www.tamtam.ai/c/ramery-genie-thermique-lille-and-beauvais) (ramery.fr)<br>Ramery specializes in construction, environmental services, real estate, and energy solutions They aim to create sustainable developments with a focus on innovation and collaboration | Building Equipment Contractors | 🇫🇷 Templemars | 12 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in the Nord department

- [The largest companies in the Nord department](https://www.tamtam.ai/l/largest-companies-nord) (2,806)
- [Multinational companies in the Nord department](https://www.tamtam.ai/l/multinational-companies-nord) (332)
- [Retail chains in the Nord department](https://www.tamtam.ai/l/retail-chains-nord) (268)
- [Companies with in-house R&D in the Nord department](https://www.tamtam.ai/l/r-and-d-companies-nord) (237)
- [Manufacturers in the Nord department](https://www.tamtam.ai/l/manufacturers-nord) (204)
- [Professional services firms in the Nord department](https://www.tamtam.ai/l/professional-services-firms-nord) (178)
- [IT services companies in the Nord department](https://www.tamtam.ai/l/it-services-companies-nord) (170)
- [IT Services and IT Consulting companies in the Nord department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-nord) (169)
- [SaaS companies in the Nord department](https://www.tamtam.ai/l/saas-companies-nord) (163)
- [Family-owned companies in the Nord department](https://www.tamtam.ai/l/family-owned-companies-nord) (156)
- [Software Development companies in the Nord department](https://www.tamtam.ai/l/software-development-companies-nord) (141)
- [Public sector organisations in the Nord department](https://www.tamtam.ai/l/public-sector-organisations-nord) (135)
- [Distributors and wholesalers in the Nord department](https://www.tamtam.ai/l/distributors-and-wholesalers-nord) (133)
- [Hardware manufacturers in the Nord department](https://www.tamtam.ai/l/hardware-companies-nord) (124)
- [Consulting firms in the Nord department](https://www.tamtam.ai/l/consulting-firms-nord) (115)
- [Retail companies in the Nord department](https://www.tamtam.ai/l/retail-companies-nord) (108)
- [Education providers in the Nord department](https://www.tamtam.ai/l/education-companies-nord) (103)
- [Real Estate companies in the Nord department](https://www.tamtam.ai/l/real-estate-companies-nord) (92)
- [Critical infrastructure operators in the Nord department](https://www.tamtam.ai/l/critical-infrastructure-operators-nord) (87)
- [Companies with a mobile app in the Nord department](https://www.tamtam.ai/l/companies-with-mobile-app-nord) (83)
- [Healthcare providers in the Nord department](https://www.tamtam.ai/l/healthcare-providers-nord) (82)
- [E-commerce companies in the Nord department](https://www.tamtam.ai/l/ecommerce-companies-nord) (81)
- [Financial services firms in the Nord department](https://www.tamtam.ai/l/financial-services-firms-nord) (81)
- [Business Consulting and Services companies in the Nord department](https://www.tamtam.ai/l/business-consulting-and-services-companies-nord) (81)

## The same list elsewhere in France

- [Energy companies in France](https://www.tamtam.ai/l/energy-companies-france) (1,594)
- [Energy companies in Île-de-France](https://www.tamtam.ai/l/energy-companies-ile-de-france) (475)
- [Energy companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/energy-companies-auvergne-rhone-alpes) (236)
- [Energy companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/energy-companies-nouvelle-aquitaine) (173)
- [Energy companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/energy-companies-hauts-de-seine) (144)
- [Energy companies in Occitanie](https://www.tamtam.ai/l/energy-companies-occitanie) (128)
- [Energy companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/energy-companies-provence-alpes-cote-dazur) (124)
- [Energy companies in Grand Est](https://www.tamtam.ai/l/energy-companies-grand-est) (115)
- [Energy companies in the Rhône department](https://www.tamtam.ai/l/energy-companies-rhone) (104)
- [Energy companies in Hauts-de-France](https://www.tamtam.ai/l/energy-companies-hauts-de-france) (74)
- [Energy companies in Pays de la Loire](https://www.tamtam.ai/l/energy-companies-pays-de-la-loire) (66)
- [Energy companies in the Gironde department](https://www.tamtam.ai/l/energy-companies-gironde) (61)
- [Energy companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/energy-companies-bouches-du-rhone) (58)
- [Energy companies in Brittany](https://www.tamtam.ai/l/energy-companies-brittany) (56)
- [Energy companies in the Haute-Garonne department](https://www.tamtam.ai/l/energy-companies-haute-garonne) (48)
- [Energy companies in the Isère department](https://www.tamtam.ai/l/energy-companies-isere) (41)
- [Energy companies in the Loire-Atlantique department](https://www.tamtam.ai/l/energy-companies-loire-atlantique) (40)
- [Energy companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/energy-companies-bourgogne-franche-comte) (38)
- [Energy companies in the Hérault department](https://www.tamtam.ai/l/energy-companies-herault) (38)
- [Energy companies in Normandy](https://www.tamtam.ai/l/energy-companies-normandy) (38)
- [Energy companies in the Bas-Rhin department](https://www.tamtam.ai/l/energy-companies-bas-rhin) (33)
- [Energy companies in Paris](https://www.tamtam.ai/l/energy-companies-paris) (187)
- [Energy companies in Lyon](https://www.tamtam.ai/l/energy-companies-lyon) (34)
- [Energy companies in Toulouse](https://www.tamtam.ai/l/energy-companies-toulouse) (33)

## The same list elsewhere

- [Energy companies in the world](https://www.tamtam.ai/l/energy-companies-in-the-world) (10,502)
- [Energy companies in Europe](https://www.tamtam.ai/l/energy-companies-in-europe) (4,235)

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Source: https://www.tamtam.ai/l/energy-companies-nord