Company lists · Data refreshed September 2026

Top 25 Retrofit engineering companies based in France

Name: Retrofit engineering companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 105 companies tracked

RevenueBase identified 105 retrofit engineering companies headquartered in France as of September 2026 and tracks 3,573 professional contacts across them, including 1,141 with verified work emails. Paris is the largest hub.

This list covers retrofit engineering companies 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 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

105Companies

3,573Contacts tracked

1,141Verified emails

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The 25 largest retrofit engineering companies based in France

Ranked by team size

Top 25 of 105 retrofit engineering companies based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to retrofit engineering companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Groupe Ponticelli Frères	Indirect evidence	FranceHQ checked Sep 17, 2026	5,001-10,000	1,829 contacts →
	Indirect evidence “The Ponticelli Frères Group is one of the main European service suppliers to companies in the energy (oil and gas, nuclear, renewable energy), industrial (chemical, steelworks…” Source: RevenueBase Database · checked Sep 17, 2026
2	CAP Ingelec	Indirect evidence	Mérignac, FranceHQ checked Sep 17, 2026	501-1,000	643 contacts →
	Indirect evidence “Groupe international d’Ingénierie & Réalisation, spécialisé dans les bâtiments complexes, nous assurons principalement des missions clés en main sur des projets de construction…” Source: RevenueBase Database · checked Sep 17, 2026
3	Groupe Talensis	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	51-200	41 contacts →
	Indirect evidence “Depuis sa création en 1990, notre groupe s’est donné comme objectif de répondre avec efficacité, précision et qualité aux demandes, de plus en plus complexes de ses clients…” Source: RevenueBase Database · checked Sep 17, 2026
4	Lockroy Construction	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	51-200	39 contacts →
	Indirect evidence “Des bâtiments professionnels pensés pour l’avenir.” Source: RevenueBase Database · checked Sep 17, 2026
5	CEREL	Indirect evidence	Roissy-En-France, FranceHQ checked Sep 17, 2026	11-50	27 contacts →
	Indirect evidence “CEREL existe car nous croyons fermement que la réponse aux défis énergétiques de demain passe par la modernisation et la fiabilisation des infrastructures électriques…” Source: RevenueBase Database · checked Sep 17, 2026
6	Archenergie	Indirect evidence	Le Haillan, FranceHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “Archenergie est l’une des premières entreprises françaises à avoir proposé une approche globale de la rénovation énergétique de l'habitat.” Source: RevenueBase Database · checked Sep 17, 2026
7	TERGI	Indirect evidence	Collégien, FranceHQ checked Sep 17, 2026	51-200	23 contacts →
	Indirect evidence “Société de travaux publics” Source: RevenueBase Database · checked Sep 17, 2026
8	Avenna	Indirect evidence	Nancy, FranceHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Avenna rend les bâtiments plus performants en fournissant des services essentiels qui améliorent leur efficacité énergétique, renforcent leur fiabilité et optimisent le confort…” Source: RevenueBase Database · checked Sep 17, 2026
9	D2m Engineering	Indirect evidence	Six Fours Les Plages, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “At d2m, our expert team of marine engineers, naval architects, and offshore contractors have been committed to crafting innovative solutions for complex maritime projects for over…” Source: RevenueBase Database · checked Sep 17, 2026
10	AFACO	Indirect evidence	Vitry-sur-seine, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “AFACO est une entreprise de travaux spécialisée dans la rénovation, optimisation et valorisation énergétique.” Source: RevenueBase Database · checked Sep 17, 2026
11	Tech9 Energie	Indirect evidence	Salon De Provence, FranceHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Depuis le 5 Juillet 2024, nos 4 entreprises RSE, ICE, TechniClim et Ecret ont fusionné en Tech9 Énergie.” Source: RevenueBase Database · checked Sep 17, 2026
12	CTBG	Indirect evidence	Grigny, FranceHQ checked Sep 17, 2026	51-200	18 contacts →
	Indirect evidence “CTBG, entreprise spécialisée dans la rénovation énergétique de l'habitat en Île-de-France depuis près de 20 ans.” Source: RevenueBase Database · checked Sep 17, 2026
13	Globalis BTP	Indirect evidence	Bussy Saint Martin, FranceHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “Globalis BTP est une entreprise spécialisée dans la réparation durable et la rénovation de bâtiments existants.” Source: RevenueBase Database · checked Sep 17, 2026
14	Spirale-Sa	Indirect evidence	Palaiseau, FranceHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “SPIRALE est spécialisée dans la réparation et la transformation d’ouvrages de travaux publics et de bâtiment.” Source: RevenueBase Database · checked Sep 17, 2026
15	Mc2 Groupe	Indirect evidence	Clermont-ferrand, FranceHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “MC2 Groupe, expert en Rénovation Énergétique, vous accompagne dans vos projets avec des solutions financées jusqu'à 100% grâce au dispositif des Certificats d'Économies d'Énergie…” Source: RevenueBase Database · checked Sep 17, 2026
16	Auglans Génie Civil	Indirect evidence	Millau, FranceHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “Auglans génie civil basé en Occitanie à Millau (12), Lunel (34) et Capens (31) spécialisé dans la construction et l'entretien des ouvrages d'art, bâtiments et sites industriels.” Source: RevenueBase Database · checked Sep 17, 2026
17	FCTP	Indirect evidence	Villeneuve-Le-Roi, FranceHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “FCTP est une entreprise spécialisée dans les travaux de génie civil et travaux publics, notamment la réalisation de travaux autour des réseaux de chaleur et de climatisation…” Source: RevenueBase Database · checked Sep 17, 2026
18	AVB Innovations	Indirect evidence	Chelles, FranceHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
19	SNA - Prosperi	Indirect evidence	Nice, FranceHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
20	Vinci Facilities Maine Littoral	Indirect evidence	Cholet, FranceHQ checked Sep 17, 2026	51-200	11 contacts →
	Indirect evidence “VINCI Facilities Maine Littoral est une entreprise de la SAS OUEST MAINTENANCE SERVICE.” Source: RevenueBase Database · checked Sep 17, 2026
21	TGM	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “TGM met tout son savoir-faire au profit de vos projets en s’adaptant à vos besoins et à vos contraintes.” Source: RevenueBase Database · checked Sep 17, 2026
22	Energitec	Indirect evidence	Toulon, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Depuis 15 ans, Energitec est spécialisé dans le conseil, l’ingénierie et l’installation d’équipements électriques pour les entreprises et les collectivités.” Source: RevenueBase Database · checked Sep 17, 2026
23	P&h Groupe	Indirect evidence	Le Barp, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “P&H GROUPE, Rénovation énergétique, aménagements et constructions.” Source: RevenueBase Database · checked Sep 17, 2026
24	Metro'nhome	Indirect evidence	Fontanil-cornillon, FranceHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Metro’nHome est une société Grenobloise spécialisée dans l'architecture d'intérieur, la rénovation tout corps d'état et la rénovation énergétique.” Source: RevenueBase Database · checked Sep 17, 2026
25	Cedipack Blow Molding	Indirect evidence	Seynod, FranceHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “CEDIPACK, a French company with 30 years of expertise, specializes in rebuilding blow-molding machines, including renowned brands such as MAGIC, BEKUM, KAUTEX, SIDEL, UNILOY…” Source: RevenueBase Database · checked Sep 17, 2026

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: retrofit engineering companies. 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 retrofit engineering companies.
Partial evidence: Its own public description names part of retrofit engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name retrofit engineering companies. 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 105 retrofit engineering companies based in France

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Retrofit engineering companies based in France at a glance

As of Sep 17, 2026

31.9%Verified-email coverage

34.0Average contacts per company

11-50Median size (employees)

6.7%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

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 105 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 retrofit engineering companies, 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 “retrofit engineering companies”. 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 retrofit engineering companies), 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 retrofit engineering companies, 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, 1,141 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 17, 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.

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 retrofit engineering companies, 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 retrofit engineering companies are there based in France?

RevenueBase identified 105 retrofit engineering companies 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?

Groupe Ponticelli Frères, headquartered in France, tops this list with the largest team on record.

Which city has the most retrofit engineering companies?

Paris leads with 7 headquartered companies, followed by Asnieres-Sur-Seine (2) and Grigny (2).

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 1,141 verified decision-maker contacts tracked across these 105 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 17, 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.