Company lists · Data refreshed September 2026

Top 25 Energy efficiency consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 1,218 companies tracked

RevenueBase identified 1,218 company matches for energy efficiency consulting firms associated with France as of September 2026 and tracks 20,245 professional contacts across them, including 8,569 with verified work emails and 359 with mobile numbers. Paris is the largest hub.

This list covers company matches for energy efficiency consulting firms 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 2, 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 2, 2026 How this list was built

1,218Companies

20,245Contacts tracked

8,569Verified emails

359Mobile numbers

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The 25 largest energy efficiency consulting firms based in France

Ranked by team size

Top 25 of 1,218 company matches for energy efficiency consulting firms based in France, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 2, 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-Andre-Lez-Lille, France	10001+	8,459 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
2	Veolia Industries Global Solutions	Exact match	Aubervilliers, France	1,001-5,000	469 contacts →
	Exact match “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
3	Greenflex	Exact match	Paris, France	501-1,000	400 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
4	Manergy	Exact match	Creteil, France	501-1,000	311 contacts →
	Exact match “Depuis 40 ans, MANERGY s’affirme comme une société indépendante de référence, spécialisée dans l’ingénierie et le conseil en transition énergétique et environnementale.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
5	EFFY	Exact match	Paris, France	201-500	298 contacts →
	Exact match “Effy, spécialiste de l’efficience énergétique.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
6	Hellio	Exact match	Clichy, France	201-500	292 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 2, 2026 · View company records in RevenueBase
7	Nepsen	Exact match	Vincennes, France	51-200	219 contacts →
	Exact match “NEPSEN est un bureau d'études indépendant, spécialisé dans les métiers de la transition énergétique & écologique depuis 40 ans.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
8	Ex'im	Exact match	La Madeleine, France	201-500	212 contacts →
	Exact match “Depuis plus de 20 ans, EX’IM s’engage dans la transition énergétique pour adapter les bâtiments (logements, entreprises, collectivités) aux enjeux de demain.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
9	Alliance DES Énergies	Exact match	Paris, France	51-200	161 contacts →
	Exact match “Alliance des Énergies : L’allié de vos stratégies énergétiques à 360°!” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
10	accenta.ai	Exact match	Boulogne-Billancourt, France	51-200	151 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 2, 2026 · View company records in RevenueBase
11	Sénova	Exact match	Grenoble, France	51-200	137 contacts →
	Exact match “Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
12	Certinergy	Exact match	La Garenne-Colombes, France	51-200	134 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 2, 2026 · View company records in RevenueBase
13	Teksial	Exact match	Colombes, France	201-500	122 contacts →
	Exact match “Depuis plus de 30 ans, TEKSIAL œuvre au profit d’un monde durable en cohérence avec les nouveaux modes de consommation d’énergie.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
14	SNECI	Exact match	France	51-200	107 contacts →
	Exact match “SNECI offers expertise in Industrial Performance Improvement, Business Development & Decarbonization to our customers internationally through 450 experts around the world.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
15	Energies France	Exact match	Gennevilliers, France	51-200	105 contacts →
	Exact match “Energies France est un cabinet de conseil et courtage en énergie pour les entreprises, spécialisé dans la veille de marché et la négociation des contrats.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
16	CDC Conseil	Exact match	Lille, France	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 2, 2026 · View company records in RevenueBase
17	Sinteo	Exact match	Paris, France	51-200	95 contacts →
	Exact match “Depuis 2008, nous accompagnons nos clients dans la triple révolution – environnementale, digitale et des usages – qui bouleverse l’immobilier.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
18	Place DES Énergies	Exact match	Saultain, France	51-200	95 contacts →
	Exact match “Face à la volatilité des prix, à la complexité des contrats et aux enjeux de consommation, la gestion de l’énergie est devenue stratégique.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
19	Energie & Service	Exact match	France	51-200	92 contacts →
	Exact match “Avez-vous besoin d'aide pour améliorer les performances énergétiques de vos bâtiments?” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
20	NRGYS	Exact match	Nanterre, France	51-200	88 contacts →
	Exact match “Qui sommes-nous?” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
21	ECO Environnement	Exact match	France	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 2, 2026 · View company records in RevenueBase
22	Etamine	Exact match	Lille, France	51-200	81 contacts →
	Exact match “Etamine est un bureau d’études et de conseils en performance environnementale : nous accompagnons les opérations immobilières de la programmation à l’exploitation, à l’échelle du…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
23	Solab Ingénierie & Environnement	Exact match	Rennes, France	51-200	73 contacts →
	Exact match “Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
24	New-E	Exact match	Paris, France	51-200	72 contacts →
	Exact match “New-e, c'est la société de conseil opérationnel, spécialiste des métiers de la transition durable!” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
25	Green Energy Service	Exact match	France	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 2, 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 consulting firms”. 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 1,218 energy efficiency consulting firms based in France

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Energy efficiency consulting firms based in France at a glance

As of Sep 2, 2026

42.3%Verified-email coverage

1.8%Mobile-number coverage

16.6Average contacts per company

1-10Median size (employees)

14.0%Largest-city concentration · Paris

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

816

11-50

303

51-200

201-500

501-1,000

1,001-5,000

10001+

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 consulting firms” 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 8,569 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 2, 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.

Energy efficiency consulting firms by metro

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 consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency consulting firms are there based in France?

RevenueBase identified 1,218 company matches for energy efficiency consulting firms 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 consulting firms?

Paris leads with 171 company records, followed by Lyon (58) and Toulouse (29).

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 8,569 professional contacts with verified work emails tracked across these 1,218 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 2, 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.