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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 14,557 | ||||
| 2 | 949 | ||||
| 3 |
JEUMONT Electricjeumontelectric.com
A major player in the electricity production and conversion market, manufacturing alternators and specific electric motors for various applications with industrial expertise |
646 | |||
| 4 |
Helexia Grouphelexia.group
Helexia provides sustainable energy solutions for industrial and commercial buildings, including energy audits, photovoltaic power plants, energy management, and electric mobility services |
380 | |||
| 5 |
Vallourec Oil & Gas Francevallourec.com
A mining & metals company based in France, specializing in oil and gas operations, located in Aulnoye-Aymeries |
128 | |||
| 6 |
InnoVentinnovent.fr
Wind and solar farm development, construction, operation, Africa expansion, research and development in new materials, biogas, energy storage. |
119 | |||
| 7 |
D'Hondt Thermal Solutionsdh-ts.com
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 |
116 | |||
| 8 |
Helexia Francehelexia.green
Support organizations' CSR strategies through energy master planning, efficiency programs, renewable energy production, and continuous improvement aligned with ISO 50001. |
96 | |||
| 9 |
Agriwattagriwatt.fr
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. |
91 | |||
| 10 |
Sunelissunelis.com
Specialized in solar photovoltaic, the company designs, installs, and maintains solar power plants, providing services for a variety of clients |
77 | |||
| 11 |
IZEN Energy Systems nvizen.eu
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 |
75 | |||
| 12 | 74 | ||||
| 13 |
Groupe REVOLTrevolt-groupe.com
Specializes in eco-responsible rental, installation of lighting and energy equipment, electric vehicle charging, and decarbonization support for industries and events. |
57 | |||
| 14 |
Ciel & Terre Internationalciel-et-terre.net
Specialist in floating photovoltaic systems, providing design, manufacturing, project management, financing, and consulting for renewable energy projects worldwide. |
55 | |||
| 15 |
ESCOFI Energies Nouvellesescofi.fr
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 |
55 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
AX GROUPax-group.com
The company offers innovative solutions to reduce energy waste and promote the ecological transition in various markets through cutting-edge technologies |
45 | |||
| 17 |
RP Global Francerp-global.com
Develops, invests, builds, operates, and produces independent electricity from wind, solar, and battery storage solutions, focusing on sustainable energy. |
44 | |||
| 18 |
SADTEMsadtem.com
A global industrial player specializing in electric power equipment for medium and high voltage applications, particularly in electric traction, energy production, and distribution |
41 | |||
| 19 |
ENERGOenergo.green
Conversion of CO2 and biogas into renewable energy and green chemistry products, promoting sustainable and eco-friendly industrial solutions. |
36 | |||
| 20 |
PEGASEpegase-energies.com
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 |
32 | |||
| 21 |
RossiniEnergyrossinienergy.com
Company accelerating sustainable mobility with electric vehicles and renewable energy by designing and manufacturing smart, scalable, Made-In-France charging stations |
28 | |||
| 22 |
TPF-Utilities France
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 |
28 | |||
| 23 |
FAVIER SETREMfaviersetrem.fr
A machinery company located in Lille, France, specializing in machinery manufacturing and production |
22 | |||
| 24 |
Sarasin Actoractor.fr
Specializes in industrial valve automation with design, assembly, certifications, and after-sales support for global energy and chemical sectors. |
22 | |||
| 25 |
MATLEX Énergiesmatlex.fr
Located in the heart of Pévèle, MATLEX specializes in selling and installing stoves, inserts, and fireplaces, offering personalized solutions with various fuel options |
20 | |||
| 26 |
PHOTEOS - Energie Photovoltaïquephoteos.fr
PHOTEOS is a partner in solar energy for professionals in Hauts-de-France, specializing in design, installation, and maintenance of photovoltaic systems |
18 | |||
| 27 |
Soltis Francesoltisfrance.com
Designing photovoltaic solutions, helping professionals, communities, industries, and farmers achieve energy autonomy through innovative solar installations, reducing carbon footprint and optimizing energy production. |
15 | |||
| 28 |
NOC Energynocenergy.com
Offers high-temperature electrification and thermal storage solutions, enabling industries to produce low-carbon products, reducing fossil fuel dependence. |
13 | |||
| 29 |
Transition Énergétique
The company specializes in clean energy solutions, with a focus on promoting renewable sources and sustainable practices for a greener future |
13 | |||
| 30 |
Ramery Génie thermique Lille & Beauvaisramery.fr
Ramery specializes in construction, environmental services, real estate, and energy solutions They aim to create sustainable developments with a focus on innovation and collaboration |
12 | |||
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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 2,806
- Multinational companies in the Nord department 332
- Retail chains in the Nord department 268
- Companies with in-house R&D in the Nord department 237
- Manufacturers in the Nord department 204
- Professional services firms in the Nord department 178
- IT services companies in the Nord department 170
- IT Services and IT Consulting companies in the Nord department 169
- SaaS companies in the Nord department 163
- Family-owned companies in the Nord department 156
- Software Development companies in the Nord department 141
- Public sector organisations in the Nord department 135
- Distributors and wholesalers in the Nord department 133
- Hardware manufacturers in the Nord department 124
- Consulting firms in the Nord department 115
- Retail companies in the Nord department 108
- Education providers in the Nord department 103
- Real Estate companies in the Nord department 92
- Critical infrastructure operators in the Nord department 87
- Companies with a mobile app in the Nord department 83
- Healthcare providers in the Nord department 82
- E-commerce companies in the Nord department 81
- Financial services firms in the Nord department 81
- Business Consulting and Services companies in the Nord department 81
The same list elsewhere in France
- Energy companies in France 1,594
- Energy companies in Île-de-France 475
- Energy companies in Auvergne-Rhône-Alpes 236
- Energy companies in Nouvelle-Aquitaine 173
- Energy companies in the Hauts-de-Seine department 144
- Energy companies in Occitanie 128
- Energy companies in Provence-Alpes-Côte d'Azur 124
- Energy companies in Grand Est 115
- Energy companies in the Rhône department 104
- Energy companies in Hauts-de-France 74
- Energy companies in Pays de la Loire 66
- Energy companies in the Gironde department 61
- Energy companies in the Bouches-du-Rhône department 58
- Energy companies in Brittany 56
- Energy companies in the Haute-Garonne department 48
- Energy companies in the Isère department 41
- Energy companies in the Loire-Atlantique department 40
- Energy companies in Bourgogne-Franche-Comté 38
- Energy companies in the Hérault department 38
- Energy companies in Normandy 38
- Energy companies in the Bas-Rhin department 33
- Energy companies in Paris 187
- Energy companies in Lyon 34
- Energy companies in Toulouse 33