Company lists · Data refreshed September 2026

Top 25 Energy efficiency retrofit contractors based in France

Name: Energy efficiency retrofit contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 832 companies tracked

RevenueBase identified 832 energy efficiency retrofit contractors headquartered in France as of September 2026 and tracks 15,509 professional contacts across them, including 6,272 with verified work emails. Paris is the largest hub.

This list covers energy efficiency retrofit contractors 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

832Companies

15,509Contacts tracked

6,272Verified emails

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The 25 largest energy efficiency retrofit contractors based in France

Ranked by team size

Top 25 of 832 energy efficiency retrofit contractors based in France, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency retrofit contractors: 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	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 16, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 16, 2026
2	Veolia Industries Global Solutions	Partial evidence	Aubervilliers, FranceHQ checked Sep 16, 2026	1,001-5,000	460 contacts →
	Partial evidence “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Source: RevenueBase Database · checked Sep 16, 2026
3	KBANE	Indirect evidence	Villeneuve-d’ascq, FranceHQ checked Sep 16, 2026	501-1,000	376 contacts →
	Indirect evidence “Kbane est la 1ère enseigne en France, dédiée à la maison performante.” Source: RevenueBase Database · checked Sep 16, 2026
4	EFFY	Partial evidence	Paris, FranceHQ checked Sep 16, 2026	201-500	292 contacts →
	Partial evidence “Effy, spécialiste de l’efficience énergétique.” Source: RevenueBase Database · checked Sep 16, 2026
5	PPF France	Indirect evidence	Sainte-Luce Sur Loire, FranceHQ checked Sep 16, 2026	51-200	267 contacts →
	Indirect evidence “Spécialiste reconnu de la vente de solutions énergétiques dans le domaine de la rénovation, la société PPF (Préservation du Patrimoine) bénéficie d’une forte réputation de qualité…” Source: RevenueBase Database · checked Sep 16, 2026
6	Eurocombles By Opnr	Indirect evidence	Solaize, FranceHQ checked Sep 16, 2026	n/a	198 contacts →
	Indirect evidence “Eurocombles, isoler vos combles, garages et caves à seulement 1€!” Source: RevenueBase Database · checked Sep 16, 2026
7	accenta.ai	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 16, 2026	51-200	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, 2026
8	Certinergy	Indirect evidence	La Garenne-colombes, FranceHQ checked Sep 16, 2026	51-200	129 contacts →
	Indirect evidence “Depuis sa création en 2008, CertiNergy se mobilise pour impulser et mettre en œuvre des actions d’économies d’énergie pour tous les consommateurs d’énergie, du particulier à…” Source: RevenueBase Database · checked Sep 16, 2026
9	IZI Solutions Durables	Indirect evidence	Courbevoie, FranceHQ checked Sep 16, 2026	51-200	109 contacts →
	Indirect evidence “En 2019, le Groupe EDF veut rendre la vie des Français plus simple et lance IZI by EDF, sa plateforme pour accompagner ses clients vers la transition énergétique.” Source: RevenueBase Database · checked Sep 16, 2026
10	ECO Environnement	Indirect evidence	Pantin, FranceHQ checked Sep 16, 2026	51-200	84 contacts →
	Indirect evidence “Éco Environnement – Expert en transition énergétique durable Éco Environnement accompagne entreprises et collectivités dans leur passage à l’énergie verte.” Source: RevenueBase Database · checked Sep 16, 2026
11	Groupe Verlaine	Indirect evidence	Valence, FranceHQ checked Sep 16, 2026	51-200	83 contacts →
	Indirect evidence “Le Groupe Verlaine, c'est l'énergie d'un réseau de plus de 60 agences et l'expertise de techniciens agréés partout en France.” Source: RevenueBase Database · checked Sep 16, 2026
12	Groupe Sofratherm - Setemi	Indirect evidence	Suresnes, FranceHQ checked Sep 16, 2026	51-200	68 contacts →
	Indirect evidence “Le groupe Sofratherm - Setemi est un groupe de services en efficacité énergétique.” Source: RevenueBase Database · checked Sep 16, 2026
13	Ithaque	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	56 contacts →
	Indirect evidence “Ithaque a été créée avec la conviction que la rénovation énergétique des maisons est un enjeu central de la transition écologique.” Source: RevenueBase Database · checked Sep 16, 2026
14	Crust Energie	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	55 contacts →
	Indirect evidence “Crust énergie réalise des travaux rénovation énergétique et les finance à 100%.” Source: RevenueBase Database · checked Sep 16, 2026
15	Ecogreenenergy	Indirect evidence	Strasbourg, FranceHQ checked Sep 16, 2026	51-200	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 16, 2026
16	VIRIA	Indirect evidence	Caen, FranceHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 16, 2026
17	Sibel Energie	Partial evidence	Montreuil, FranceHQ checked Sep 16, 2026	11-50	52 contacts →
	Partial evidence “Sibel Energie Sibel Energie est une société de services mise en place afin d’inciter les particuliers à faire des économies d’énergie sur le territoire national.” Source: RevenueBase Database · checked Sep 16, 2026
18	EOLYA	Partial evidence	Saint-martin-le-vinoux, FranceHQ checked Sep 16, 2026	51-200	51 contacts →
	Partial evidence “EOLYA est une Société de Services en Efficacité Energétique et Environnementale (S²E³), active sur la région Auvergne-Rhône-Alpes, générant un chiffre d’affaires d'environ 15 M€…” Source: RevenueBase Database · checked Sep 16, 2026
19	Homélior	Indirect evidence	Puteaux, FranceHQ checked Sep 16, 2026	11-50	43 contacts →
	Indirect evidence “Rénovation énergétique clé en main \| Audit • Travaux • Financement Chez Homélior, nous croyons que chaque maison rénovée est une victoire pour la planète et pour ses habitants.” Source: RevenueBase Database · checked Sep 16, 2026
20	Best Energies	Partial evidence	Montreuil, FranceHQ checked Sep 16, 2026	11-50	42 contacts →
	Partial evidence “Best Energies is an engineering firm leader in energy performance and savings, specialized in renewable energies as well as conventional, for heating and air conditioning systems.” Source: RevenueBase Database · checked Sep 16, 2026
21	AXYS	Indirect evidence	Courtabœuf, FranceHQ checked Sep 16, 2026	11-50	41 contacts →
	Indirect evidence “L’équipe AXYS, forte de son expérience dans le domaine, met en application depuis plus de 25 ans, l’ensemble des nouvelles technologies applicables aux équipements techniques des…” Source: RevenueBase Database · checked Sep 16, 2026
22	Tucoenergie	Indirect evidence	Clichy, FranceHQ checked Sep 16, 2026	51-200	40 contacts →
	Indirect evidence “Depuis 2009, TucoEnergie est engagé pour rendre la rénovation énergétique possible et accessible au plus grand nombre.” Source: RevenueBase Database · checked Sep 16, 2026
23	IE Conseil - BET	Indirect evidence	Croissy-beaubourg, FranceHQ checked Sep 16, 2026	11-50	39 contacts →
	Indirect evidence “IE CONSEIL est perçu comme un acteur reconnu pour le conseil en utilisation et en gestion de l’énergie dans les bâtiments existants mais également pour les constructions neuves.” Source: RevenueBase Database · checked Sep 16, 2026
24	Sogitec	Indirect evidence	Marseille, FranceHQ checked Sep 16, 2026	51-200	35 contacts →
	Indirect evidence “SOGITEC est une entreprise de services énergétiques indépendante, experte en génie thermique & climatique, en travaux, maintenance, exploitation et en gestion énergétique des…” Source: RevenueBase Database · checked Sep 16, 2026
25	Alliaserv TPF	Indirect evidence	Toulouse, FranceHQ checked Sep 16, 2026	11-50	33 contacts →
	Indirect evidence “Sociétés de services en efficacité énergétique et environnementale, indépendantes des grands énergéticiens, nous proposons aux entreprises, aux collectivités, aux bailleurs…” Source: RevenueBase Database · checked Sep 16, 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: energy efficiency retrofit contractors. 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 efficiency retrofit contractors.
Partial evidence: Its own public description names part of energy efficiency retrofit contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency retrofit contractors. 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 832 energy efficiency retrofit contractors based in France

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Energy efficiency retrofit contractors based in France at a glance

As of Sep 16, 2026

40.4%Verified-email coverage

18.6Average contacts per company

1-10Median size (employees)

9.6%Largest-city concentration · Paris

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

441

11-50

308

51-200

201-500

501-1,000

1,001-5,000

10001+

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 832 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 efficiency retrofit contractors, 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 efficiency retrofit contractors”. 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 efficiency retrofit contractors), 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 efficiency retrofit contractors, 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, 6,272 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 efficiency retrofit contractors by metro

Energy efficiency retrofit contractors in Paris80

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 efficiency retrofit contractors, 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 efficiency retrofit contractors are there based in France?

RevenueBase identified 832 energy efficiency retrofit contractors 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 efficiency retrofit contractors?

Paris leads with 80 headquartered companies, followed by Lyon (19) and Villeurbanne (15).

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 6,272 verified decision-maker contacts tracked across these 832 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.