These energy companies in Hauts-de-Seine primarily represent established large groups and mid-sized firms operating in diverse sectors such as electricity distribution, renewable energy, nuclear power, and multi-technical services. Key players include Schneider Electric, a global leader in energy technology, and ENGIE, which operates across the energy value chain from production to supply. VINCI Energies focuses on environmental transition with multi-technical solutions, while Enedis manages France's public electricity distribution network.
The data shows a strong concentration of headquarters in the eastern part of the department, particularly in Courbevoie, Boulogne-Billancourt, and La Garenne-Colombes. Companies like Framatome specialize in nuclear power plant components, and Orano provides expertise in nuclear materials. This reflects a mix of traditional energy infrastructure management and forward-looking solutions for sustainability and decarbonization.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Schneider Electricse.com
Global energy technology leader, providing efficiency and sustainability through electrifying, automating, and digitalizing industries, businesses, and homes with intelligent devices and digital services. |
87,938 | |||
| 2 | 45,706 | ||||
| 3 |
VINCI Energiesvinci-energies.com
Contributes to environmental transition by implementing customized multi-technical solutions from design to maintenance, enhancing infrastructure reliability, efficiency, and sustainability for energy and digital sectors. |
25,848 | |||
| 4 | 24,479 | ||||
| 5 |
EQUANSequans.com
A global leader in multi-technical services, providing customized solutions for building improvement and supporting sustainable development with a highly qualified team |
15,419 | |||
| 6 |
Framatomeframatome.com
Designs, services and installs components, fuel, and instrumentation and control systems for global nuclear power plants while providing digital and technical expertise. |
14,188 | |||
| 7 |
Oranoorano.group
International operator in nuclear materials, provides high-value products and services across the entire fuel cycle, addressing energy and health challenges through expertise and innovation. |
12,605 | |||
| 8 |
ENGIE Solutions Franceengie-solutions.com
Provides comprehensive, lasting solutions to businesses, industries, and communities for carbon neutrality, improving infrastructure competitiveness, city attractiveness, and living/working comfort. |
12,252 | |||
| 9 |
Equans Franceequans.fr
Designs, installs, and delivers bespoke solutions optimizing equipment and usage for businesses, local authorities, and industrial players in energy, industrial, and digital transitions. |
11,029 | |||
| 10 |
Plastic Omniumplasticomnium.com
Provides innovative automotive solutions: exterior systems, lighting, clean energy, and complex modules. Focuses on zero-carbon mobility through hydrogen and electrification. |
9,551 | |||
| 11 |
Vallourecvallourec.com
Provides benchmark tubular solutions for energy, oil and gas, industrial applications, hydrogen, CCUS, geothermal, and solar energy markets. |
8,787 | |||
| 12 |
Nexansnexans.com
Design, manufacture, and services for cable systems across transmission, grid, connectivity, and industry sectors, focusing on sustainable, decarbonized electricity. |
8,776 | |||
| 13 |
GE Renewable Energyge.com
Engineers energy products and digital services using wind, solar, and hydro resources for global customers, delivering affordable, reliable, and sustainable power. |
4,994 | |||
| 14 |
GE Grid Solutionsgevernova.com
Provides utilities and industries with equipment, systems, services for reliable power delivery from generation to consumers, focusing on renewable integration and energy transition acceleration. |
4,934 | |||
| 15 | 3,940 | ||||
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 |
Bollorébollore.com
An international group specializing in transportation & logistics, communications, media, and electricity storage solutions, with a strong presence globally |
3,033 | |||
| 17 | 2,986 | ||||
| 18 |
ALTRAD ENDELlinktr.ee
Provides industrial solutions, from design to maintenance, for the energy sector, including nuclear, thermal, petrochemical, and steel industries, with expertise in piping, welding, and mechanics. |
2,978 | |||
| 19 |
VINCI Energies en France
Accelerating environmental transition in France by focusing on energy and digital transformations for factories, buildings, cities, and energy/transport infrastructure with innovative solutions |
2,953 | |||
| 20 |
CFAOcfaogroup.com
Contributes to growth and industrialisation in Africa, providing mobility, healthcare, consumer goods, infrastructure and energy solutions to the continent's emerging middle class. |
2,761 | |||
| 21 |
NaTrannatrangroupe.com
Second largest European gas transport operator focusing on energy transition, carbon neutrality, and innovative infrastructure for biomethane, hydrogen, and CO2. |
2,700 | |||
| 22 |
Arabelle Solutionsarabellesolutions.com
Provides nuclear turbine island technology, services for power plants, including steam turbines, generators, pumps, heat-exchangers, and cybersecurity solutions worldwide. |
2,335 | |||
| 23 | 2,281 | ||||
| 24 |
GCC, l’ETI de préférencegcc-groupe.com
A leading independent group in the construction industry, offering sustainable solutions, promoting personal growth and entrepreneurship, and contributing to a lasting future |
1,967 | |||
| 25 |
Edvanceedvance.fr
Designs and implements nuclear islands and control commands for nuclear reactors under construction, domestically and internationally. |
1,943 | |||
| 26 | 1,740 | ||||
| 27 |
Eni Energies et Servicesfr.eni.com
A leading energy provider in France offering electricity, natural gas, and energy solutions to help consumers manage their energy consumption efficiently |
1,574 | |||
| 28 |
TSG Grouptsg-solutions.com
Design, construction, and maintenance of energy distribution infrastructures including electric vehicle charging, hydrogen, biofuels, and payment systems for mobility. |
1,513 | |||
| 29 |
PROXISERVEproxiserve.fr
Provides innovative energy solutions for homes and buildings, specializing in heating, water, and electric vehicle charging, serving condominiums, landlords, and private customers. |
1,256 | |||
| 30 |
Entrepose Groupentrepose-contracting.com
Design, construction, and operation of onshore, offshore, and underground infrastructures for oil, gas, geothermal, and energy storage projects worldwide. |
1,153 | |||
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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 Hauts-de-Seine department
- The largest companies in the Hauts-de-Seine department 5,160
- Multinational companies in the Hauts-de-Seine department 1,231
- IT services companies in the Hauts-de-Seine department 737
- IT Services and IT Consulting companies in the Hauts-de-Seine department 706
- Professional services firms in the Hauts-de-Seine department 629
- Consulting firms in the Hauts-de-Seine department 563
- Companies with in-house R&D in the Hauts-de-Seine department 510
- SaaS companies in the Hauts-de-Seine department 389
- Business Consulting and Services companies in the Hauts-de-Seine department 304
- Software Development companies in the Hauts-de-Seine department 301
- Retail chains in the Hauts-de-Seine department 292
- Manufacturers in the Hauts-de-Seine department 285
- Advertising Services companies in the Hauts-de-Seine department 281
- Marketing and communications agencies in the Hauts-de-Seine department 235
- Subscription businesses in the Hauts-de-Seine department 228
- Hardware manufacturers in the Hauts-de-Seine department 199
- Financial services firms in the Hauts-de-Seine department 198
- Companies with a mobile app in the Hauts-de-Seine department 189
- Critical infrastructure operators in the Hauts-de-Seine department 169
- AI companies in the Hauts-de-Seine department 159
- Education providers in the Hauts-de-Seine department 159
- Cybersecurity companies in the Hauts-de-Seine department 154
- Distributors and wholesalers in the Hauts-de-Seine department 154
- Recruitment and staffing agencies in the Hauts-de-Seine department 152
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 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 Nord department 42
- 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