Company lists · Data refreshed September 2026
Top 25 Energy systems integration firms based in France
RevenueBase identified 981 energy systems integration firms headquartered in France as of September 2026 and tracks 21,442 professional contacts across them, including 3,821 with verified work emails. Paris is the largest hub.
This list covers energy systems integration firms headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest energy systems integration firms based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,903 contacts → | ||||
Partial evidence “With today's global energy sector undergoing constant change, Omexom works with its clients in delivering on the promises of the energy transition.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 525 contacts → | ||||
Indirect evidence “Akuo est spécialisé dans la mise en œuvre d’unités de production d’électricité à partir de ressources renouvelables, en particulier le solaire, l'éolien et le stockage.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 393 contacts → | ||||
Indirect evidence “Equans Digital connects OT, IT and data to make your infrastructures truly controllable.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 174 contacts → | ||||
Strong evidence “Entech develops solar production, storage, and electricity conversion solutions controlled by smart software systems that promote the increasing and profitable integration of…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 139 contacts → | ||||
Indirect evidence “Up Technologies est une société de conseil pour l'industrie avec des agences sur Lyon, Grenoble, Clermont-Ferrand, Aix-en-Provence, Toulon, Nice Sophia, Toulouse et Paris.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 133 contacts → | ||||
Strong evidence “Nidec ASI S.A.S, based near Saint-Etienne (42) in France, is a company that designs, manufactures and installs Battery Energy Storage Systems.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 101 contacts → | ||||
Indirect evidence “Le Groupe Vergnet, “créateur vertueux d’indépendance énergétique depuis 1989”, n’a de cesse depuis son origine de permettre à ses clients de maitriser leur production d’énergie…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 96 contacts → | ||||
Partial evidence “APILOG Automation, filiale de GCC Energie, est un intégrateur en courants faibles, supervision, automatismes et sûreté pour les bâtiments.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 93 contacts → | ||||
Indirect evidence “Avez-vous besoin d'aide pour améliorer les performances énergétiques de vos bâtiments?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 87 contacts → | ||||
Strong evidence “Elum Energy is an energy & automation company providing ePowerControl technology : an Energy Management Systems (EMS) for renewable energy, storage, generators and other…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 72 contacts → | ||||
Indirect evidence “Solares Bauen est un bureau d’étude fluides, thermique et environnement dans le bâtiment créée en 2005 à Strasbourg.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 72 contacts → | ||||
Indirect evidence “Organisée sur un modèle de start-up, Arnest réalise des services d’ingénierie et de management de projets pour le secteur de l'énergie.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 71 contacts → | ||||
Indirect evidence “Votre Partenaire d'Excellence en Solutions Électroniques et Électriques » Depuis le Groupe INOVELEC incarne l'excellence dans la conception et la fabrication de cartes…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 66 contacts → | ||||
Indirect evidence “NED, expert en distribution de solutions en énergies renouvelables.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 62 contacts → | ||||
Indirect evidence “ERESE | Groupe SCET HTC est un bureau d’études spécialisé dans les énergies, les réseaux et l’environnement.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 62 contacts → | ||||
Indirect evidence “Le Groupe API, intégrateur de solutions de pilotage des process et des infrastructures tertiaires et industrielles, poursuit activement son développement.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 60 contacts → | ||||
Indirect evidence “LAUTECH est une société du groupe ALLEZ, spécialisée dans la conception, la fabrication et la réalisation des - Postes de livraison au poste de transformation HTA/BT-…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 58 contacts → | ||||
Indirect evidence “Spécialisé dans le génie électrique, courants forts, courants faibles, dans le génie climatique et les énergies renouvelables, EGA intervient principalement pour le secteur…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 57 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 57 contacts → | ||||
Indirect evidence “Avec l'avènement des technologie de l'information, l'ensemble de la chaîne énergétique devient intelligent - Les réseaux de distribution (SMART GRID)- Les villes (SMART CITY)- Les…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 54 contacts → | ||||
Indirect evidence “Et si l’énergie que vous perdez aujourd’hui devenait votre plus grand levier de compétitivité?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 54 contacts → | ||||
Indirect evidence “Créée en 2016, Optima Énergie est un cabinet de #conseil en #énergie basé en #Bretagne.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 46 contacts → | ||||
Indirect evidence “ELSIA est un intégrateur spécialisé dans la conception, l'installation et la maintenance de systèmes de sécurité dédiés aux bâtiments - Sécurité incendie - Vidéo protection -…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 46 contacts → | ||||
Indirect evidence “SERSI SYSTÈME, expert en systèmes de communication, sûreté et sécurité électronique, accompagne intégrateurs, électriciens et entreprises avec un savoir-faire reconnu.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 44 contacts → | ||||
Indirect evidence “ELYS, ingénierie indépendante pour la construction de parcs éoliens, de centrales solaires PV, BESS et de postes HTB privés.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: energy systems integration firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names energy systems integration firms.
- Partial evidence
- Its own public description names part of energy systems integration firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name energy systems integration firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 981 energy systems integration firms based in France
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Energy systems integration firms based in France at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 981 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among energy systems integration firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in France whose own description of what they do matches “energy systems integration firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names energy systems integration firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among energy systems integration firms, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 3,821 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Energy systems integration firms by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names energy systems integration firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many energy systems integration firms are there based in France?
RevenueBase identified 981 energy systems integration firms headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Omexom, headquartered in Nanterre, tops this list with the largest team on record.
Which city has the most energy systems integration firms?
Paris leads with 71 headquartered companies, followed by Lyon (18) and Toulouse (13).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,821 verified decision-maker contacts tracked across these 981 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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