Company lists · Data refreshed September 2026

Top 25 Energy efficiency consultancies based in Paris, France

Name: Energy efficiency consultancies based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 170 companies tracked

RevenueBase identified 170 energy efficiency consultancies headquartered in Paris, France as of September 2026 and tracks 2,239 professional contacts across them, including 1,014 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers energy efficiency consultancies 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 28, 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 28, 2026 86% judged on-target in blind review

170Companies

2,239Contacts tracked

1,014Verified emails

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The 25 largest energy efficiency consultancies based in Paris, France

Ranked by team size

Top 25 of 170 energy efficiency consultancies based in Paris, France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency consultancies: 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	Greenflex	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	501-1,000	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 28, 2026
2	EFFY	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	201-500	292 contacts →
	Partial evidence “Effy, spécialiste de l’efficience énergétique.” Source: RevenueBase Database · checked Sep 28, 2026
3	Eficia	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	169 contacts →
	Indirect evidence “Eficia révolutionne le secteur de l'efficacité énergétique avec la première solution globale et 100% intégrée du marché pour garantir la performance énergétique de vos bâtiments…” Source: RevenueBase Database · checked Sep 28, 2026
4	Sénova	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	139 contacts →
	Indirect evidence “Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Source: RevenueBase Database · checked Sep 28, 2026
5	Oasiis	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	87 contacts →
	Indirect evidence “QUI SOMMES NOUS?” Source: RevenueBase Database · checked Sep 28, 2026
6	Erese Groupe Scet HTC	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	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 28, 2026
7	ACE Energie	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	56 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
8	Alter Watt	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
9	Ithaque	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
10	Crust Energie	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	55 contacts →
	Indirect evidence “Crust énergie réalise des travaux rénovation énergétique et les finance à 100%.” Source: RevenueBase Database · checked Sep 28, 2026
11	Sobre Energie	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
12	EBS Energie	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “L’entité EBS Énergie accompagne et finance toutes les opérations d’économies d’énergie éligibles dans le cadre du dispositif des Certificats d’Économies d’Énergie (CEE).” Source: RevenueBase Database · checked Sep 28, 2026
13	Omnegy By Epsa	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
14	Neovee	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “En tant que Mandataire sur le dispositif des Certificats d’Économies d’Énergie pour le compte de plusieurs Obligés, nous avons pour mission de vous accompagner dans l'obtention…” Source: RevenueBase Database · checked Sep 28, 2026
15	Sirenergies	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
16	AMO Conseils	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “AMO Conseils, bureau d’études spécialisé en transition énergétique du bâtiment, accompagne professionnels et particuliers dans leurs projets.” Source: RevenueBase Database · checked Sep 28, 2026
17	Premium Énergies	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Premium Énergies est un cabinet de conseil en achat d’énergie et en performance énergétique dédié aux entreprises (TPE, PME, industries, syndicats, hôtellerie, restauration…” Source: RevenueBase Database · checked Sep 28, 2026
18	Assistant Rénov	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	19 contacts →
	Indirect evidence “Assistant Rénov est une société du Groupe Effy dédiée à la réalisation d'audits énergétiques pour les particuliers.” Source: RevenueBase Database · checked Sep 28, 2026
19	Homyos	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
20	Ecome Ingénierie	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	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 28, 2026
21	Haya Energy Solutions	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “ℎ Energy consumers, producers or developers facing issues with your energy-related topics?” Source: RevenueBase Database · checked Sep 28, 2026
22	Energy DE France	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	16 contacts →
	Partial evidence “Energy de France - Le générateur de la performance énergétique.” Source: RevenueBase Database · checked Sep 28, 2026
23	Eléments Ingénieries	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
24	LHIRR	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 2026
25	CASBÂ	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	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 28, 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 consultancies. 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 consultancies.
Partial evidence: Its own public description names part of energy efficiency consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency consultancies. 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 170 energy efficiency consultancies based in Paris, France

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Energy efficiency consultancies based in Paris, France at a glance

As of Sep 28, 2026

45.3%Verified-email coverage

13.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

103

11-50

51-200

201-500

501-1,000

1,001-5,000

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 170 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 consultancies, 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 efficiency consultancies”. 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 consultancies), 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 consultancies, 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, 1,014 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 28, 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 consultancies by metro in France

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 consultancies, 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 consultancies are there based in Paris, France?

RevenueBase identified 170 energy efficiency consultancies 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 in France has the most energy efficiency consultancies?

Paris leads France with 170 headquartered companies, followed by Lyon (54) and Toulouse (26).

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 1,014 verified decision-maker contacts tracked across these 170 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 28, 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.