The Hérault department hosts a concentration of companies primarily focused on renewable energy. These are mostly mid-sized firms, with several established around the mid-2000s. URBASOLAR, Valeco, and Arkolia are key players in developing, financing, and operating wind and solar power plants. DYNEFF, founded in 1958, provides a broader range of fuels and energy services.
Many of these companies, such as Apex Energies, Gensun, and LUXEL, specialize in solar electric power generation and related services, including design, construction, and maintenance. A notable pattern is the strong presence of headquarters in Montpellier, indicating a regional cluster for energy businesses.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
URBASOLARurbasolar.com
Develops, finances, builds, operates professional photovoltaic plants, offering innovative solutions for diagnosis and building implementation. |
423 | |||
| 2 |
Valecogroupevaleco.com
Design, finance, build, operate, and maintain wind farms and solar power plants, focusing on renewable energy production and sales. |
416 | |||
| 3 | 401 | ||||
| 4 |
Arkoliaarkolia.com
An integrated French multi-energy energizer, active in solar, wind, and green gas, develops and operates power plants, ensuring design, construction, maintenance. |
282 | |||
| 5 |
Apex Energiesapexenergies.fr
Transforms solar into an economic and strategic lever for businesses, communities, and landowners through tailored solar project management and maintenance across France. |
216 | |||
| 6 | 200 | ||||
| 7 | 154 | ||||
| 8 |
Genviagenvia.com
Clean hydrogen technology venture enabling decarbonization with high-performance electrolyser and fuel cell systems, strategic alliances, and giga factory for production |
151 | |||
| 9 |
Dalkia Air Solutionsdalkiaairsolutions.fr
Provides solutions for compressed air, nitrogen, and breathable air production, treatment, and networks, focusing on energy performance improvement for industrial and nuclear clients. |
138 | |||
| 10 |
Vensolairvensolair.fr
Development of wind farms, solar photovoltaic plants, battery storage, and renewable hydrogen through local stakeholder engagement and technical expertise for regional energy transition. |
128 | |||
| 11 |
Altémedaltemed.fr
Public group specializing in responsible urban development, social housing management, and renewable energy projects to support metropolitan community transitions. |
118 | |||
| 12 |
A+ énergies | Installateur de panneaux solaires photovoltaïques et batterie de stockageaplusenergies.fr
Installation of photovoltaic panels, storage batteries, heat pumps, and energy home automation providing turnkey self-consumption solutions for residential and professional clients throughout France. |
115 | |||
| 13 |
SIREOSsireos.com
A company specializing in engineering, constructing, and maintaining large-scale photovoltaic power plants with a focus on teamwork, excellence, and sustainability |
103 | |||
| 14 |
Elementselements.green
Green electricity production from solar, wind, hydro plants. Synchronizes local consumption with renewable energy mix through community-rooted projects, citizen participation, and partner integration. |
99 | |||
| 15 |
Comwattcomwatt.com
Develops unique, patented technologies and smart energy management products for photovoltaic self-consumption, reducing energy bills and promoting local, green electricity production. |
92 | |||
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 |
GROUPE SERM/SA3Mserm-montpellier.fr
Urban development group in Montpellier focusing on residents' quality of life, eco and digital transitions, managing new neighborhoods, public facilities, and energy projects |
89 | |||
| 17 |
Mintmint-energie.com
Provider of sustainable electricity, eco-friendly mobile plans with refurbished phones, and solar self-consumption solutions for individuals and businesses. |
78 | |||
| 18 |
IES Synergyies-synergy.com
An international company specializing in designing and manufacturing charging solutions for electric vehicles, promoting decarbonization, and emphasizing strong CSR focus |
76 | |||
| 19 |
SYRIUS SOLAR INDUSTRYsyrius-solar.fr
solar energy company with 35 years experience, expanding presence in overseas territories, France, and internationally through acquisitions |
63 | |||
| 20 | 60 | ||||
| 21 |
Domuneodomuneo.com
Specialists in sustainable home transformations, reducing energy bills, promoting solar energy, managing energy consumption, and hiring talent for various roles in renewable energy sectors |
52 | |||
| 22 |
MGH Energymgh-energy.com
An innovative company focused on decarbonizing maritime and air transport through sustainable synthetic fuels, sail propulsion, and electric propulsion technologies |
30 | |||
| 23 | 29 | ||||
| 24 |
Maison Solaire Voltaliamaison-solaire-voltalia.com
solar panel installation for homes and businesses, project study, technical visits, administrative support, consumption management, renewable energy transition support |
20 | |||
| 25 | 12 | ||||
| 26 |
Latitude Solaire
Accelerating energy transition through development, financing, and construction of photovoltaic plants, part of Groupe Ponticelli Frères |
12 | |||
| 27 |
Captain Watt
A company driving ecological and energy transition through renewable energy, innovation economics, and responsible real estate on a local scale |
10 | |||
| 28 |
SolarinBluesolarinblue.com
A French start-up specializing in offshore solar photovoltaics, aiming to decarbonize energy consumption in port, industrial, and yachting facilities |
10 | |||
| 29 |
LES EOLIENNES FLOTTANTES DU GOLFE DU LIONinfo-efgl.fr
The company develops, constructs, and operates a pilot farm project with three floating wind turbines off the coast, contributing to the energy transition in Occitanie region |
7 | |||
| 30 |
ECOTERRE ENERGIE VERTEcomptoireolien.fr
A leading provider of solar energy solutions in France, offering high-quality equipment to help customers achieve energy autonomy and reduce pollution |
6 | |||
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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 11, 2026.
More company lists in the Hérault department
- The largest companies in the Hérault department 1,461
- Companies with in-house R&D in the Hérault department 155
- Retail chains in the Hérault department 131
- SaaS companies in the Hérault department 110
- Software Development companies in the Hérault department 107
- Multinational companies in the Hérault department 103
- Professional services firms in the Hérault department 84
- Manufacturers in the Hérault department 71
- Public sector organisations in the Hérault department 68
- Education providers in the Hérault department 61
- Hardware manufacturers in the Hérault department 61
- Critical infrastructure operators in the Hérault department 57
- IT Services and IT Consulting companies in the Hérault department 57
- Real Estate companies in the Hérault department 56
- Retail companies in the Hérault department 54
- IT services companies in the Hérault department 53
- Higher Education companies in the Hérault department 52
- Family-owned companies in the Hérault department 50
- Law Practice companies in the Hérault department 49
- Accounting firms in the Hérault department 48
- Healthcare providers in the Hérault department 48
- Accounting companies in the Hérault department 48
- Distributors and wholesalers in the Hérault department 48
- Pharmaceutical companies in the Hérault department 44
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 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 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