Company lists · Data refreshed September 2026

Top 25 Energy efficiency contractors based in France

Name: Energy efficiency 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 921 companies tracked

RevenueBase identified 921 company matches for energy efficiency contractors associated with France as of September 2026 and tracks 17,169 professional contacts across them, including 7,397 with verified work emails. Paris is the largest hub.

This list covers company matches for energy efficiency contractors associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 16, 2026 How this list was built

921Companies

17,169Contacts tracked

7,397Verified emails

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The 25 largest energy efficiency contractors based in France

Ranked by team size

Top 25 of 921 company matches for energy efficiency contractors based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Sep 16, 2026	10001+	8,427 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	Veolia Industries Global Solutions	Exact match	Aubervilliers, FranceHQ recorded Sep 16, 2026	1,001-5,000	460 contacts →
	Exact match “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Homeserve France	Exact match	Lyon Cedex 7, FranceHQ recorded Sep 16, 2026	501-1,000	366 contacts →
	Exact match “Depuis près de 25 ans, HomeServe accompagne les particuliers vers une maison plus durable, plus sûre et plus économique.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	IZI By EDF	Exact match	Courbevoie, FranceHQ recorded Sep 16, 2026	201-500	318 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	Hellio	Exact match	Clichy, FranceHQ recorded Sep 16, 2026	201-500	293 contacts →
	Exact match “Engagé depuis 2008, Hellio est le pionnier du marché des économies d’énergie en France (métropole et Outre-Mer).” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	EFFY	Exact match	Paris, FranceHQ recorded Sep 16, 2026	201-500	292 contacts →
	Exact match “Effy, spécialiste de l’efficience énergétique.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	Sonergia	Exact match	Marseille, FranceHQ recorded Sep 16, 2026	51-200	151 contacts →
	Exact match “Implantée à Marseille depuis 2009, SONERGIA s’inscrit dans une démarche de développement durable en accompagnant les fournisseurs d’énergie, appelés obligés, dans l’atteinte des…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	accenta.ai	Exact match	Boulogne-billancourt, FranceHQ recorded Sep 16, 2026	51-200	149 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Sénova	Exact match	Paris, FranceHQ recorded Sep 16, 2026	51-200	139 contacts →
	Exact match “Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	Certinergy	Exact match	La Garenne-colombes, FranceHQ recorded Sep 16, 2026	51-200	129 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	CDC Conseil	Exact match	Joué-lès-tours, FranceHQ recorded Sep 16, 2026	51-200	98 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Energie & Service	Exact match	Versailles, FranceHQ recorded Sep 16, 2026	51-200	93 contacts →
	Exact match “Avez-vous besoin d'aide pour améliorer les performances énergétiques de vos bâtiments?” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	ECO Environnement	Exact match	Pantin, FranceHQ recorded Sep 16, 2026	51-200	84 contacts →
	Exact match “Éco Environnement – Expert en transition énergétique durable Éco Environnement accompagne entreprises et collectivités dans leur passage à l’énergie verte.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Green Energy Service	Exact match	Paris, FranceHQ recorded Sep 16, 2026	51-200	70 contacts →
	Exact match “Green Energy Service est un opérateur de services énergétiques (ESCO) spécialisé dans l’amélioration de la performance énergétique des bâtiments.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Groupe Sofratherm - Setemi	Exact match	Suresnes, FranceHQ recorded Sep 16, 2026	51-200	68 contacts →
	Exact match “Le groupe Sofratherm - Setemi est un groupe de services en efficacité énergétique.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Erese Groupe Scet HTC	Exact match	Paris, FranceHQ recorded Sep 16, 2026	51-200	62 contacts →
	Exact match “ERESE \| Groupe SCET HTC est un bureau d’études spécialisé dans les énergies, les réseaux et l’environnement.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Ynergie	Exact match	Toulouse, FranceHQ recorded Sep 16, 2026	11-50	57 contacts →
	Exact match “Ynergie, c’est un accompagnement sur-mesure d’un projet d’efficacité énergétique avec - de l'ingénierie financière (CEE, MaPrimeRénov', Guichet ADEME.)- de l'ingénierie de projets” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	ACE Energie	Exact match	Paris, FranceHQ recorded Sep 16, 2026	11-50	56 contacts →
	Exact match “ACE Énergie est une société de services en d'efficacité énergétique qui propose 3 offres :=> Offre de financement de projet : Nous participons au financement de projets…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Alter Watt	Exact match	Paris, FranceHQ recorded Sep 16, 2026	11-50	56 contacts →
	Exact match “Alter Watt est un bureau d’études énergétiques, né de la conviction que la transition écologique est un enjeu majeur des années à venir.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Ithaque	Exact match	Paris, FranceHQ recorded Sep 16, 2026	11-50	56 contacts →
	Exact match “Ithaque a été créée avec la conviction que la rénovation énergétique des maisons est un enjeu central de la transition écologique.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	Crust Energie	Exact match	Paris, FranceHQ recorded Sep 16, 2026	11-50	55 contacts →
	Exact match “Crust énergie réalise des travaux rénovation énergétique et les finance à 100%.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	VIRIA	Exact match	Caen, FranceHQ recorded Sep 16, 2026	51-200	54 contacts →
	Exact match “Qui sommes-nous?” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23	Optima Énergie	Exact match	Plescop, FranceHQ recorded Sep 16, 2026	11-50	54 contacts →
	Exact match “Créée en 2016, Optima Énergie est un cabinet de #conseil en #énergie basé en #Bretagne.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24	Sobre Energie	Exact match	Paris, FranceHQ recorded Sep 16, 2026	11-50	53 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25	Sibel Energie	Exact match	Montreuil, FranceHQ recorded Sep 16, 2026	11-50	52 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy efficiency contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 921 energy efficiency contractors based in France

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Energy efficiency contractors based in France at a glance

As of Sep 16, 2026

43.1%Verified-email coverage

18.6Average contacts per company

1-10Median size (employees)

13.4%Largest-city concentration · Paris

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

566

11-50

278

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 921 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with France whose business descriptions match “energy efficiency contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,397 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “energy efficiency contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency contractors are there based in France?

RevenueBase identified 921 company matches for energy efficiency contractors associated with France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Dalkia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy efficiency contractors?

Paris leads with 123 company records, followed by Lyon (31) and Toulouse (21).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,397 professional contacts with verified work emails tracked across these 921 companies; direct dials are available where recorded.

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 SmartSearch, 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.