# Top 30 energy companies in the Bouches-du-Rhône department

Tamtam tracks 58 energy companies headquartered in the Bouches-du-Rhône department. This list ranks the 30 largest by number of employees on LinkedIn, led by BOURBON, Onet Technologies and BOURBON OFFSHORE SURF. Their median headcount is 88. Half of them were founded in 2008 or later. The most common headquarters are Marseille (8), Aix-en-Provence (6) and La Ciotat (2).

The energy sector in Bouches-du-Rhône features a mix of established industrial players and newer companies focused on renewable energy. Large groups like BOURBON, with its maritime services for oil, gas, and wind, and Onet Technologies, specializing in nuclear engineering, operate alongside smaller firms. The region also hosts companies like Baudouin, manufacturing marine and power generation diesel engines, and GEOCEAN, a marine works contractor.

A notable trend is the strong presence of companies involved in maritime activities, reflecting the department's coastal location. This includes oil and gas transportation, as seen with maritima and Société du Pipeline Sud-Européen, as well as offshore wind energy, exemplified by BW Ideol, a leader in floating offshore wind technology. The sector also includes solar energy producers like Enoé and O2 TOIT, indicating a shift towards diverse energy sources.

🇫🇷 Bouches-du-Rhône · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [BOURBON](https://www.tamtam.ai/c/bourbon) (bourbonoffshore.com)<br>Provides innovative, sustainable maritime services for oil, gas, and wind energy sectors with a modern fleet and 4,600 employees in 32 countries. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Marseille | 5,069 | 1948 |
| 2 | [Onet Technologies](https://www.tamtam.ai/c/onet-technologies) (onet.fr)<br>Expertise in nuclear engineering and services for reactor maintenance, dismantling, decommissioning, waste management, and training within the nuclear industry lifecycle. | Industrial Machinery Manufacturing | 🇫🇷 Marseille | 2,071 |  |
| 3 | [BOURBON OFFSHORE SURF](https://www.tamtam.ai/c/bourbon-offshore-surf) (bourbonoffshore.com)<br>A leading ship management company with a fleet of 80 support vessels operating in West Africa, prioritizing safety and high standards | Maritime Transportation | 🇫🇷 Marseille | 589 | 1948 |
| 4 | [Geres](https://www.tamtam.ai/c/geres) (geres.eu)<br>A French non-profit NGO working on sustainable development projects globally to preserve the environment, reduce social inequalities, and combat climate change | Non-profit Organizations | 🇫🇷 Aubagne | 324 | 1976 |
| 5 | [Baudouin](https://www.tamtam.ai/c/baudouin) (baudouin.com)<br>manufacture high-quality marine and power generation diesel engines, including propulsion solutions, generator sets, and auxiliary engines | Machinery Manufacturing | 🇫🇷 Cassis | 322 | 1918 |
| 6 | [GEOCEAN](https://www.tamtam.ai/c/geocean) (geocean.com)<br>Marine works contractor specializing in subsea pipeline installation, coastal infrastructure, and difficult submarine projects, with expertise in site analysis and renewable energy. | Specialty Trade Contractors | 🇫🇷 Cassis | 218 | 1984 |
| 7 | [MATEN SECOMOC](https://www.tamtam.ai/c/maten-secomoc) (maten-secomoc.com)<br>French group provides comprehensive solutions for the tank industry, offering engineering, construction, maintenance, and tailored equipment for various industrial sectors worldwide. | Oil and Gas | 🇫🇷 Saint-Martin-de-Crau | 170 | 1984 |
| 8 | [Enoé](https://www.tamtam.ai/c/enoe) (enoe-energie.fr)<br>French producer of green and local energies, mastering the entire value chain: design, development, financing, construction, operation and maintenance of solar power plants. | Solar Electric Power Generation | 🇫🇷 Marseille | 170 | 2019 |
| 9 | [O2 TOIT](https://www.tamtam.ai/c/o2-toit) (o2toit.fr)<br>A leading French company in the green and solar energy sector, with a strong presence in the south of France | Solar Electric Power Generation | 🇫🇷 Aix-en-Provence | 135 | 2013 |
| 10 | [maritima](https://www.tamtam.ai/c/maritima) (sogestran.com)<br>With over 40 years of maritime expertise, this company specializes in petroleum transportation, providing oil bunkering services and depot storage in Fos/Lavéra port area | Maritime Transportation | 🇫🇷 Port-de-Bouc | 121 |  |
| 11 | [Société du Pipeline Sud-Européen (SPSE)](https://www.tamtam.ai/c/societe-du-pipeline-sud-europeen-spse) (spse.fr)<br>Operation and management of a crude oil pipeline network from France to Germany, including large-scale oil storage facilities. | Oil and Gas | 🇫🇷 Fos-sur-Mer | 113 | 1958 |
| 12 | [Clarke Energy - Fr](https://www.tamtam.ai/c/clarke-energy-fr) (clarke-energy.com)<br>Global specialist providing gas engine power generation, biogas upgrading solutions, and hybrid energy systems including hydrogen and batteries for resilient grid integration. | Services for Renewable Energy | 🇫🇷 Bouc-Bel-Air | 101 | 2001 |
| 13 | [Cybernetix](https://www.tamtam.ai/c/cybernetix) (ten.com)<br>A provider of surveillance and robotics solutions for the fast-changing energy industry, focusing on improving economics, quality, safety, and reducing carbon footprint | Oil and Gas | 🇫🇷 Marseille | 95 | 1985 |
| 14 | [BW Ideol](https://www.tamtam.ai/c/bw-ideol) (bw-ideol.com)<br>Pioneer and global leader in floating offshore wind, designing, executing, and developing projects with patented Damping Pool® technology; floating foundation supplier and co-developer. | Wind Electric Power Generation | 🇫🇷 La Ciotat | 89 | 2010 |
| 15 | [CSTI GROUPE](https://www.tamtam.ai/c/csti-groupe) (csti-groupe.com)<br>Design and manufacture of special machines, stainless steel fabrication, testing loops, reactor equipment, project development, control, integration, and maintenance in nuclear sector. | Machinery Manufacturing | 🇫🇷 Peyrolles-en-Provence | 88 | 1986 |
| 16 | [IRISOLARIS GROUPE](https://www.tamtam.ai/c/irisolaris-groupe)<br>Independent renewable energy group; specializes in photovoltaic building construction, ground/rooftop solar power plants, metal frameworks, and self-consumption solutions. | Renewable Energy Power Generation | 🇫🇷 Rousset | 88 | 2009 |
| 17 | [HEXANA](https://www.tamtam.ai/c/hexana) (hexana.fr)<br>Designs modular sodium-cooled fast neutron nuclear reactors providing sustainable, competitive, low-carbon energy solutions to replace fossil fuels. | Manufacturing | 🇫🇷 Aix-en-Provence | 81 | 2023 |
| 18 | [Enogia](https://www.tamtam.ai/c/enogia) (enogia.com)<br>ENOGIA specializes in compact, durable micro-turbomachinery for heat-to-electricity conversion, offering ORC modules and air compressors for hydrogen mobility | Renewable Energy Power Generation | 🇫🇷 Marseille | 79 | 2009 |
| 19 | [AXONE](https://www.tamtam.ai/c/axone) (axonegroup.com)<br>Expertise in complex system architecture and safety, focusing on sustainable industrial optimization to balance ecology and technology for clients. | Business Consulting and Services | 🇫🇷 Meyreuil | 77 | 2016 |
| 20 | [BOURBON SUBSEA SERVICES](https://www.tamtam.ai/c/bourbon-subsea-services) (bourbonoffshore.com)<br>This company provides complete solutions for offshore energy industries | Oil and Gas | 🇫🇷 Marseille | 64 |  |
| 21 | [Calogena](https://www.tamtam.ai/c/calogena) (calogena.com)<br>Calogena offers a solution to decarbonize European urban heating networks with a small modular nuclear reactor for residential and office buildings | Energy Technology | 🇫🇷 Aix-en-Provence | 56 | 2021 |
| 22 | [ETI Offshore](https://www.tamtam.ai/c/eti-offshore) (eti-offshore.com)<br>French engineering company specialized in designing and constructing offshore fluid transfer systems Experienced team delivers high-quality, tailored products with no delays or failures | Mechanical Or Industrial Engineering | 🇫🇷 Gémenos | 53 | 2006 |
| 23 | [CHEMET GLI Services](https://www.tamtam.ai/c/chemet-gli-services) (sas.chemet.eu)<br>European manufacturer of pressure tanks for liquefied gases, offering turn-key installations, cryogenic stations, and innovative tank car solutions Leading in EU market with global presence | Oil and Gas | 🇫🇷 Saint-Rémy-de-Provence | 50 |  |
| 24 | [SUNPARTNER Technologies](https://www.tamtam.ai/c/sunpartner-technologies) (sunpartnertechnologies.com)<br>Innovative company in the south of France developing invisible photovoltaic solutions for consumer electronics, building, and transportation markets, making objects autonomous | Renewables & Environment | 🇫🇷 Rousset | 49 | 2008 |
| 25 | [CHARGEPOLY](https://www.tamtam.ai/c/chargepoly) (chargepoly.com)<br>An engineering and technology company specializing in electrifying transportation markets by providing cost-effective charging solutions for commercial fleets | Environmental Services | 🇫🇷 Aix-en-Provence | 48 | 2019 |
| 26 | [HSL Technologies (HySiLabs)](https://www.tamtam.ai/c/hsl-technologies-hysilabs) (hsl.tech)<br>Revolutionary technology enables on-demand hydrogen generation from stable liquids, eliminating storage issues and offering a flexible energy solution for various applications | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Aix-en-Provence | 47 | 2015 |
| 27 | [Optimum Tracker](https://www.tamtam.ai/c/optimum-tracker) (optimum-tracker.com)<br>A visionary company specializing in patented solar tracking systems for utility-scale solar power plants, offering innovative products and services for optimal energy efficiency | Renewable Energy Equipment Manufacturing | 🇫🇷 Meyreuil | 45 | 2009 |
| 28 | [OTRERA](https://www.tamtam.ai/c/otrera) (otrera.fr)<br>Development of advanced sodium fast reactors for sustainable, efficient, and competitive low-carbon nuclear energy supporting industrial and territorial needs. | Nuclear Electric Power Generation | 🇫🇷 Aix-en-Provence | 45 | 2024 |
| 29 | [AIS Bardot](https://www.tamtam.ai/c/ais-bardot) (aisltd.com)<br>Specializing in SURF construction projects, this company offers innovative polymer, syntactic, and steel technologies to reduce costs and enhance reliability | Oil and Gas | 🇫🇷 La Ciotat | 42 | 2004 |
| 30 | [SILOSUN](https://www.tamtam.ai/c/silosun) (silosun.fr)<br>Converts industrial buildings' large rooftops into solar energy sources, addressing contemporary energy challenges through photovoltaic solutions. | Solar Electric Power Generation | 🇫🇷 Marseille | 38 |  |

## 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.

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- [Software Development companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/software-development-companies-bouches-du-rhone) (120)
- [Education providers in the Bouches-du-Rhône department](https://www.tamtam.ai/l/education-companies-bouches-du-rhone) (119)
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- [Healthcare providers in the Bouches-du-Rhône department](https://www.tamtam.ai/l/healthcare-providers-bouches-du-rhone) (107)
- [Law Practice companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/law-practice-companies-bouches-du-rhone) (100)
- [Critical infrastructure operators in the Bouches-du-Rhône department](https://www.tamtam.ai/l/critical-infrastructure-operators-bouches-du-rhone) (98)
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## 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 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 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 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-bouches-du-rhone