# Energy companies headquartered in the Haute-Garonne department

Tamtam tracks 48 energy companies headquartered in the Haute-Garonne department. This list ranks the 30 largest by number of employees on LinkedIn, led by SPIE Industrie, SCLE and SHEM Société Hydro-Electrique du Midi. Their median headcount is 35. Half of them were founded in 2014 or later. The most common headquarters are Toulouse (23) and Balma (2).

The energy sector in Haute-Garonne features a mix of companies across various segments, from traditional power generation to renewable energy services and smart technology. Many are mid-sized firms, alongside younger companies founded in the last decade. SPIE Industrie, with 1781 employees, supports industrial clients in digital transformation and energy transition. SHEM Société Hydro-Electrique du Midi develops and operates hydropower stations, while GRDF Occitanie manages the natural gas distribution network.

A notable pattern is the concentration of headquarters in Toulouse, indicating a regional hub for energy businesses. Companies like ilek provide green energy solutions with a focus on local supply chains. SOLVEO Energies develops and operates photovoltaic and wind farms, and ZE-WATT designs and installs electric vehicle charging stations. This shows a strong emphasis on renewable energy development and associated infrastructure.

🇫🇷 Haute-Garonne · 30 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [SPIE Industrie](https://www.tamtam.ai/c/spie-industrie) (spie.fr)<br>Support industrial clients with digital transformation and energy transition through design, implementation, and maintenance of energy-efficient installations. | Services for Renewable Energy | 🇫🇷 Toulouse | 1,781 | 2018 |
| 2 | [SCLE](https://www.tamtam.ai/c/scle) (scle.fr)<br>The company specializes in providing devices and systems for high-voltage substations and rail signaling | IT Services and IT Consulting | 🇫🇷 Toulouse | 370 | 1969 |
| 3 | [SHEM Société Hydro-Electrique du Midi](https://www.tamtam.ai/c/shem-societe-hydro-electrique-du-midi) (shem.fr)<br>Development and operation of hydro-power stations with extensive infrastructure, ensuring safety, environmental preservation, and regional protection. | Hydroelectric Power Generation | 🇫🇷 Balma | 230 | 1929 |
| 4 | [Groupe Alliaserv](https://www.tamtam.ai/c/groupe-alliaserv) (alliaserv.fr)<br>Specializes in green space management, multi-service maintenance, and operation of heating, ventilation, air conditioning, and renewable energy installations. | Services for Renewable Energy | 🇫🇷 Toulouse | 201 | 2001 |
| 5 | [GRDF Occitanie](https://www.tamtam.ai/c/grdf-occitanie) (grdf.fr)<br>Operates France's natural gas distribution network, ensuring access for households and businesses, maintaining infrastructure, and supporting energy transition initiatives. | Oil and Gas | 🇫🇷 Toulouse | 181 |  |
| 6 | [ilek](https://www.tamtam.ai/c/ilek) (ilek.fr)<br>A sustainability-focused startup providing green energy solutions in France, promoting local, short supply chains, and advocating for a positive energy future | Services for Renewable Energy | 🇫🇷 Toulouse | 152 | 2016 |
| 7 | [SOLVEO Energies](https://www.tamtam.ai/c/solveo-energies) (solveo-energies.com)<br>Develops, finances, builds, and operates photovoltaic and wind farms, active in green mobility, with 300+ power plants in operation. | Renewable Energy Power Generation | 🇫🇷 Toulouse | 135 | 2008 |
| 8 | [FOURNIE GROSPAUD SYNERYS](https://www.tamtam.ai/c/fournie-grospaud-synerys) (fgsynerys.fr)<br>Specializing in control-command equipment for electrical energy, offering expertise in production, transmission, and distribution Providing solutions for modernizing energy infrastructures with digital equipment | Electric Power Transmission, Control, and Distribution | 🇫🇷 Toulouse | 85 |  |
| 9 | [ZE-WATT](https://www.tamtam.ai/c/ze-watt) (ze-watt.com)<br>Design and installation of electric vehicle charging stations with site audits, civil works, maintenance, supervision, and customer support services. | Technology, Information and Internet | 🇫🇷 Toulouse | 77 | 2015 |
| 10 | [INTEGRA Metering Ultrasonic](https://www.tamtam.ai/c/integra-metering-ultrasonic) (sontex.com)<br>Development production sale of water energy meters and data management systems for utilities property managers and building operators | Smart Meter Manufacturing | 🇫🇷 Blagnac | 73 | 2010 |
| 11 | [Dietsmann France](https://www.tamtam.ai/c/dietsmann-france) (dietsmann.com)<br>The largest independent specialist in operating and maintaining energy production plants. They also handle construction, trade, supply management, and offer training services. | Oil and Gas | 🇫🇷 Toulouse | 71 | 1970 |
| 12 | [AMK ENERGY](https://www.tamtam.ai/c/amk-energy) (amkgroupe.com)<br>A Toulouse-based company specializing in photovoltaic installation for professionals, offering sustainable and profitable solutions as part of the AMK group founded in 2020 | Solar Electric Power Generation | 🇫🇷 Toulouse | 38 | 2020 |
| 13 | [H3 Dynamics](https://www.tamtam.ai/c/h3-dynamics) (h3dynamics.com)<br>Development of zero-emission electric aircraft, hydrogen production and supply infrastructure, and sustainable aviation fuel enablement for clean air transport. | Aviation and Aerospace Component Manufacturing | 🇫🇷 Toulouse | 37 | 2015 |
| 14 | [MECOWORKS](https://www.tamtam.ai/c/mecoworks) (mecoworks.com)<br>Your trusted partner for renewable energy production services | Construction | 🇫🇷 Saint-Lys | 35 | 2009 |
| 15 | [GEOTHERMECO](https://www.tamtam.ai/c/geothermeco) (geothermeco.fr)<br>A specialized energy consulting company partnering with Engie, Geotherm-Eco assists individuals in purchasing gas and electricity at the best prices and conditions | Services for Renewable Energy | 🇫🇷 Toulouse | 35 | 2009 |
| 16 | [Eco-Tech Ceram](https://www.tamtam.ai/c/eco-tech-ceram) (ecotechceram.com)<br>Specializes in industrial heat and energy storage solutions, offering turnkey technical and financial services to reduce energy consumption and carbon footprint. | Renewable Energy Equipment Manufacturing | 🇫🇷 Balma | 30 | 2014 |
| 17 | [MECOSUN](https://www.tamtam.ai/c/mecosun) (mecosun.fr)<br>Designing, manufacturing, and selling photovoltaic solar support solutions in France and internationally | International Trade and Development | 🇫🇷 Saint-Lys | 27 | 2008 |
| 18 | [Bohr Energie](https://www.tamtam.ai/c/bohr-energie) (bohr-energie.fr)<br>An AI company specializing in optimizing energy assets on European power markets | Services for Renewable Energy | 🇫🇷 Toulouse | 24 | 2020 |
| 19 | [HYCCO](https://www.tamtam.ai/c/hycco) (hycco.fr)<br>Designing and manufacturing flexible carbon fibre bipolar plates and gaskets for high-power density fuel cells, redox batteries, and various electrochemical energy systems. | Renewables & Environment | 🇫🇷 Toulouse | 21 | 2019 |
| 20 | [Enosis](https://www.tamtam.ai/c/enosis) (enosis-energies.com)<br>The company develops and sells equipment to recycle CO2, produce renewable gas, and facilitate the integration of electricity and gas networks | Environmental Services | 🇫🇷 Toulouse | 21 | 2014 |
| 21 | [SDEHG - Syndicat départemental d’énergie de la Haute-Garonne](https://www.tamtam.ai/c/sdehg-syndicat-departemental-d-energie-de-la-haute-garonne) (sdehg.fr)<br>An essential public institution in Haute-Garonne, supporting energy services, energy transition, and infrastructure development for communities in the region | Government Administration | 🇫🇷 Toulouse | 20 | 1938 |
| 22 | [H2PULSE](https://www.tamtam.ai/c/h2pulse) (h2pulse.com)<br>Specializing in hydrogen energy solutions for industries like aeronautics, railways, and road transport, H2PULSE accelerates research knowledge transfer and deployment of innovative hydrogen solutions | Industrial Machinery Manufacturing | 🇫🇷 Toulouse | 19 |  |
| 23 | [ANYOS](https://www.tamtam.ai/c/anyos) (anyos.fr)<br>A French company manufacturing eco-designed, modular electric vehicle charging stations, offering end-to-end solutions for businesses, public organizations, and communities | Environmental Services | 🇫🇷 Toulouse | 18 | 2019 |
| 24 | [VIARÉNO](https://www.tamtam.ai/c/viareno) (energieb.fr)<br>Specializes in energy efficiency services including insulation, carpentry, heating, air conditioning, and self-consumption with full project management and maintenance. | Services for Renewable Energy | 🇫🇷 Bouloc | 16 | 2014 |
| 25 | [Soleil Du Midi Développement](https://www.tamtam.ai/c/soleil-du-midi-developpement) (soleildumidi.fr)<br>Specializing in renewable and community energy solutions, this company focuses on sustainable practices for a cleaner and more efficient future | Renewables & Environment | 🇫🇷 Toulouse | 16 | 2009 |
| 26 | [Swan-H](https://www.tamtam.ai/c/swan-h)<br>Develops a patented chemical process to produce ammonia from renewable energy, aiming to overcome hydrogen production, storage, and transport challenges for a carbon-free future. | Chemical Manufacturing | 🇫🇷 Toulouse | 13 | 2021 |
| 27 | [Energies Nouvelles Courtage](https://www.tamtam.ai/c/energies-nouvelles-courtage) (encpro.fr)<br>Specializing in financing and supporting photovoltaic projects for farmers and industries, offering tailored solutions, free feasibility studies, and project management from start to finish | Renewable Energy Power Generation | 🇫🇷 L'Union | 12 | 2011 |
| 28 | [SUNSHINE POWER](https://www.tamtam.ai/c/sunshine-power) (sunshinepower.fr)<br>Specializing in roofing, cladding, and solar panel installation on agricultural and industrial buildings in southern France Experienced, insured, and dedicated to client satisfaction | Construction | 🇫🇷 Toulouse | 12 | 2019 |
| 29 | [Sol'R](https://www.tamtam.ai/c/sol-r) (solr.fr)<br>A Toulouse-based company providing tailored and sustainable photovoltaic solutions for businesses, landlords, local authorities, and farmers in the southern region | Solar Electric Power Generation | 🇫🇷 Toulouse | 9 | 2021 |
| 30 | [Bynergie](https://www.tamtam.ai/c/bynergie) (bynergie.com)<br>Specialized company in renewable energies with RGE certification, ensuring environmental quality and sustainable energy solutions | Renewable Energy Power Generation | 🇫🇷 Toulouse | 8 | 2021 |

## 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 13, 2026.

## More company lists in the Haute-Garonne department

- [The largest companies in the Haute-Garonne department](https://www.tamtam.ai/l/largest-companies-haute-garonne) (2,402)
- [Companies with in-house R&D in the Haute-Garonne department](https://www.tamtam.ai/l/r-and-d-companies-haute-garonne) (323)
- [Multinational companies in the Haute-Garonne department](https://www.tamtam.ai/l/multinational-companies-haute-garonne) (246)
- [Retail chains in the Haute-Garonne department](https://www.tamtam.ai/l/retail-chains-haute-garonne) (222)
- [Professional services firms in the Haute-Garonne department](https://www.tamtam.ai/l/professional-services-firms-haute-garonne) (208)
- [Aerospace and defence companies in the Haute-Garonne department](https://www.tamtam.ai/l/aerospace-and-defense-companies-haute-garonne) (186)
- [Manufacturers in the Haute-Garonne department](https://www.tamtam.ai/l/manufacturers-haute-garonne) (159)
- [IT services companies in the Haute-Garonne department](https://www.tamtam.ai/l/it-services-companies-haute-garonne) (158)
- [IT Services and IT Consulting companies in the Haute-Garonne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-haute-garonne) (152)
- [SaaS companies in the Haute-Garonne department](https://www.tamtam.ai/l/saas-companies-haute-garonne) (147)
- [Consulting firms in the Haute-Garonne department](https://www.tamtam.ai/l/consulting-firms-haute-garonne) (145)
- [Software Development companies in the Haute-Garonne department](https://www.tamtam.ai/l/software-development-companies-haute-garonne) (140)
- [Hardware manufacturers in the Haute-Garonne department](https://www.tamtam.ai/l/hardware-companies-haute-garonne) (137)
- [Public sector organisations in the Haute-Garonne department](https://www.tamtam.ai/l/public-sector-organisations-haute-garonne) (110)
- [Business Consulting and Services companies in the Haute-Garonne department](https://www.tamtam.ai/l/business-consulting-and-services-companies-haute-garonne) (104)
- [Real Estate companies in the Haute-Garonne department](https://www.tamtam.ai/l/real-estate-companies-haute-garonne) (104)
- [Aviation and Aerospace Component Manufacturing companies in the Haute-Garonne department](https://www.tamtam.ai/l/aviation-and-aerospace-component-manufacturing-companies-haute-garonne) (102)
- [Distributors and wholesalers in the Haute-Garonne department](https://www.tamtam.ai/l/distributors-and-wholesalers-haute-garonne) (98)
- [Education providers in the Haute-Garonne department](https://www.tamtam.ai/l/education-companies-haute-garonne) (94)
- [Family-owned companies in the Haute-Garonne department](https://www.tamtam.ai/l/family-owned-companies-haute-garonne) (72)
- [Financial services firms in the Haute-Garonne department](https://www.tamtam.ai/l/financial-services-firms-haute-garonne) (69)
- [Higher Education companies in the Haute-Garonne department](https://www.tamtam.ai/l/higher-education-companies-haute-garonne) (66)
- [Critical infrastructure operators in the Haute-Garonne department](https://www.tamtam.ai/l/critical-infrastructure-operators-haute-garonne) (64)
- [Retail companies in the Haute-Garonne department](https://www.tamtam.ai/l/retail-companies-haute-garonne) (63)

## 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) (116)
- [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 Nord department](https://www.tamtam.ai/l/energy-companies-nord) (42)
- [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 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 Bourgogne-Franche-Comté](https://www.tamtam.ai/l/energy-companies-bourgogne-franche-comte) (37)
- [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) (10,501)
- [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-haute-garonne