Company lists · Data refreshed September 2026
Top 25 Energy engineering firms based in France
RevenueBase identified 1,279 energy engineering firms headquartered in France as of September 2026 and tracks 30,806 professional contacts across them, including 13,970 with verified work emails. Paris is the largest hub.
This list covers energy engineering 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 16, 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 engineering firms based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 8,427 contacts → | ||||
Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,518 contacts → | ||||
Strong evidence “Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,502 contacts → | ||||
Indirect evidence “Welcome to Ekium!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 460 contacts → | ||||
Partial evidence “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 390 contacts → | ||||
Partial evidence “Since 2009, GreenFlex has been a key partner in the energy, environmental and societal transformation of organizations, enabling them to change their trajectory towards an economy…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 365 contacts → | ||||
Strong evidence “DORIS is a leader in the provision of engineering, advisory, and project management services to the energy industry.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 363 contacts → | ||||
Strong evidence “As an all trade and energy engineering company, ALTEREA operates through a reasoned approach in all your renovation projects, construction and energy optimization projects in the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 341 contacts → | ||||
Indirect evidence “Atlantic Ingénierie, l’énergie d’avancer ensemble Chez Atlantic Ingénierie, nous avons une conviction : les projets d’énergie et d’industrie avancent mieux quand on allie…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 305 contacts → | ||||
Indirect evidence “Depuis plus de 40 ans, MANERGY s’affirme comme une société indépendante de référence, spécialisée dans l’ingénierie et le conseil en transition énergétique et environnementale.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 236 contacts → | ||||
Partial evidence “Entrepose Contracting, a subsidiary of VINCI Construction Grands Projets, designs and delivers critical energy infrastructure for the storage, treatment, and transportation of…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 161 contacts → | ||||
Indirect evidence “Alliance des Énergies : L’allié de vos stratégies énergétiques à 360°!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 149 contacts → | ||||
Indirect evidence “Accenta aide les acteurs de l’immobilier à maîtriser leurs charges, valoriser leurs actifs et répondre aux exigences réglementaires, grâce à la performance énergie-carbone.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 122 contacts → | ||||
Partial evidence “SOFREGAZ is a leading independent engineering company, created in 1959 by Gaz de France, with over 1300 projects across 95 countries.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 106 contacts → | ||||
Indirect evidence “otimo est une société de conseil en ingénierie spécialisée dans les secteurs de l'Énergie, l'Environnement et les Infrastructures.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 101 contacts → | ||||
Indirect evidence “Les électriciens du bâtiment” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 98 contacts → | ||||
Indirect evidence “CDC Conseil est une entreprise qui propose - Aux gestionnaires de patrimoines immobiliers des prestations de conseil de suivi d’exploitation, d’achat d’énergie et des solutions…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 96 contacts → | ||||
Indirect evidence “Basée au sud de Lyon, Côte conçoit, réalise et pilote des projets électriques à haute technicité depuis plus de 75 ans.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 93 contacts → | ||||
Indirect evidence “Avez-vous besoin d'aide pour améliorer les performances énergétiques de vos bâtiments?” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 88 contacts → | ||||
Indirect evidence “FIMATEC Ingénierie propose à ses clients des Solutions Globales en Ingénierie.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 87 contacts → | ||||
Partial evidence “Etchart Energies, anciennement Arrambide, est une filiale du groupe Etchart depuis plus de 10 ans maintenant.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 81 contacts → | ||||
Indirect evidence “ALTO Ingénierie est un bureau d'étude Fluides et Environnement, qui intervient en MOE et AMO, mais également en Direction de Synthèse et BIM Management.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 80 contacts → | ||||
Indirect evidence “VFE conçoit, réalise et maintient les infrastructures de réseaux d'énergies, le génie électrique et les nouvelles énergies, le génie thermique et climatique, la maintenance et les…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 74 contacts → | ||||
Indirect evidence “Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 73 contacts → | ||||
Indirect evidence “Akila Ingénierie est un bureau d'études en ingénierie du bâtiment à taille humaine et proche de ses clients.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 73 contacts → | ||||
Partial evidence “Since 1988, TVA Engineering member of TVA Group has carried its expertise into industrial applications of numerous sectors that are equally demanding in technical expertise…” Source: RevenueBase Database · checked Sep 16, 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 engineering 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 engineering firms.
- Partial evidence
- Its own public description names part of energy engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name energy engineering 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 1,279 energy engineering firms based in France
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Energy engineering firms based in France at a glance
As of Sep 16, 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 1,279 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 engineering 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 engineering 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 engineering 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 engineering 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, 13,970 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 16, 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 engineering 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 engineering 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 engineering firms are there based in France?
RevenueBase identified 1,279 energy engineering 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?
Dalkia, headquartered in Saint-Andre-Lez-Lille, tops this list with the largest team on record.
Which city has the most energy engineering firms?
Paris leads with 146 headquartered companies, followed by Lyon (52) and Toulouse (31).
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 13,970 verified decision-maker contacts tracked across these 1,279 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 16, 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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