Company lists · Data refreshed September 2026
Top 25 Energy engineering firms based in Paris, France
RevenueBase identified 146 energy engineering firms headquartered in Paris, France as of September 2026 and tracks 1,885 professional contacts across them, including 863 with verified work emails. Paris is the largest hub.
This list covers energy engineering firms headquartered in Paris, 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 Paris, France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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. | |||||
| 2 | 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. | |||||
| 3 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 61 contacts → | ||||
Indirect evidence “Fondée en 1958, IGREC INGENIERIE, assure des missions d’ingénierie générale et de conseil dans les domaines les plus variés du bâtiment, de l’industrie, des infrastructures, des…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 56 contacts → | ||||
Indirect evidence “Alter Watt est un bureau d’études énergétiques, né de la conviction que la transition écologique est un enjeu majeur des années à venir.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 53 contacts → | ||||
Partial evidence “Sobre Energie, est une solution Deepki, dédiée à l’Energy Management et à l’accompagnement des entreprises et des collectivités dans la sobriété énergétique de leurs parcs…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 39 contacts → | ||||
Strong evidence “Deerns is an international, independent consulting and engineering firm specialized in MEP design, in energy strategies and sustainable performance of buildings, in health and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 36 contacts → | ||||
Indirect evidence “Iboco, spécialiste en cheminement de l’énergie, est un acteur incontournable sur les segments du Résidentiel, du Tertiaire, de l’Industrie et de l’Infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 34 contacts → | ||||
Indirect evidence “OMNEGY est un cabinet de conseil en énergie pour les entreprises, spécialiste des achats et des contrats d'énergie.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 contacts → | ||||
Indirect evidence “Ingénierie thermique, énergétique et environnementale du bâtiment” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 21 contacts → | ||||
Indirect evidence “Crée en 2021 par Emmanuel Sire et Raphaël Barbate, Sirenergies s’appuie sur les deux expertises de ses fondateurs : le sourcing d’énergies et la technologie numérique.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 20 contacts → | ||||
Indirect evidence “ÉTUDES, RÉALISATION ET MAINTENANCE EN GÉNIE CLIMATIQUE La Solvac met à votre service l’ensemble des prestations techniques de chauffage, de ventilation et de climatisation.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Indirect evidence “Homyos accompagne les particuliers dans leur trajectoire énergétique en leur proposant un plan de travaux sortie de passoire.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Indirect evidence “UNE EXPERTISE POUR VOS PROJETS A HAUTE VALEUR ÉNERGÉTIQUE ET ENVIRONNEMENTALE Nous sommes spécialisés dans la conception fluides, environnement, thermique de bâtiments…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 15 contacts → | ||||
Indirect evidence “Fondée en 2004, Eléments Ingénieries est un bureau d’études indépendant spécialisé en ingénierie des fluides, bioclimatique, carbone & environnement.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 15 contacts → | ||||
Indirect evidence “LHIRR est une agence d’ingénierie indépendante fondée en 2018 par quatre ingénieurs, spécialisée dans la performance énergétique réelle des bâtiments tertiaires.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Indirect evidence “Casbâ - Expert en rénovation énergétique Casbâ accompagne les professionnels de l'immobilier dans la rénovation énergétique de leur parc immobilier.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 12 contacts → | ||||
Partial evidence “Kallpa Energie Solutions est une société de conseil et d'ingénierie spécialisée dans la performance énergétique.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Indirect evidence “COZEN, entreprise de service environnementale, aide les entreprises et les collectivités à réduire durablement leurs consommations d’énergie et les coûts associés.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 11 contacts → | ||||
Partial evidence “Enersweet est un groupe spécialisé dans les services d'efficacité énergétique à destination des entreprises et des collectivités.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Partial evidence “Chez Mouv Energie, cabinet de conseil pour professionnels et industriels, nous optimisons votre budget Energie.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Indirect evidence “CFERM est un bureau d’études techniques dont l’activité centrale est l’énergie, thermique ou électrique, dans tous les domaines du bâtiment : logement, tertiaire, enseignement…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “Depuis 2009, nous concevons vos projets dès la réalisation du Permis de Construire avec l’appui de nos ingénieurs structures, fluides, thermiques et électriques.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Indirect evidence “Depuis sa création, ELAII s’est organisée pour répondre au mieux aux attentes des clients en termes d'automatisation, d'économie d’énergie et de confort.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Partial evidence “Alva Systems is a tech company specialized in the installation of energy systems for commercial and industrial buildings.> Energy Management (BMS) Monitor and regulate your…” 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 146 energy engineering firms based in Paris, France
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Energy engineering firms based in Paris, France at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured across the whole France list rather than for Paris, so it is reported there. Company counts and contact totals on this page are exact for Paris, over 146 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 Paris, 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 Paris 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, 863 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 in France
- Energy engineering firms in Paris146
- Energy engineering firms in Lyon52
- Energy engineering firms in Toulouse31
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 Paris, France?
RevenueBase identified 146 energy engineering firms headquartered in Paris, 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?
Greenflex, headquartered in Paris, 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 863 verified decision-maker contacts tracked across these 146 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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