Company lists · Data refreshed September 2026

Top 25 Ecological consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 951 companies tracked

RevenueBase identified 951 ecological consulting firms headquartered in France as of September 2026 and tracks 12,703 professional contacts across them, including 5,063 with verified work emails and 207 with mobile numbers. Paris is the largest hub.

This list covers ecological consulting firms 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 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

951Companies

12,703Contacts tracked

5,063Verified emails

207Mobile numbers

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The 25 largest ecological consulting firms based in France

Ranked by team size

Top 25 of 951 ecological consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to ecological consulting firms: 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 Cogedis	Indirect evidence	Saint Thonan, France	501-1,000	650 contacts →
	Indirect evidence “Le Groupe Cogedis est un groupe multi-expertises avec plus de 25 compétences et sociétés partenaires au service des professionnels et des agriculteurs.” Source: RevenueBase Database · checked Sep 1, 2026
2	Biotope	Indirect evidence	Meze, France	201-500	524 contacts →
	Indirect evidence “Fondée en 1993 par des passionnés de nature engagés, Biotope s’est imposée au fil des années comme précurseur et leader mondial de l’ingénierie environnementale et de la…” Source: RevenueBase Database · checked Sep 1, 2026
3	Cabinet Merlin	Indirect evidence	Lyon, France	501-1,000	482 contacts →
	Indirect evidence “Acteur reconnu depuis plus de 100 ans, le participe activement à la transition écologique en proposant des prestations de conseil et d’ingénierie.” Source: RevenueBase Database · checked Sep 1, 2026
4	Brézillon	Indirect evidence	Saint-Porchaire, France	51-200	288 contacts →
	Indirect evidence “Entreprise spécialisée en génie environnemental, Brézillon agit depuis près de 30 ans pour préserver, restaurer et valoriser les terrains sur l’ensemble du territoire national.” Source: RevenueBase Database · checked Sep 1, 2026
5	Eodd Ingénieurs Conseils	Indirect evidence	La Rochelle, France	201-500	279 contacts →
	Indirect evidence “Créé en 1991, reconnu comme l’un des meilleurs cabinets français spécialiste de la transformation écologique, EODD ingénieurs conseils apporte sa vision transversale et ses…” Source: RevenueBase Database · checked Sep 1, 2026
6	IRH Ingenieur Conseil	Indirect evidence	Ludres, France	51-200	235 contacts →
	Indirect evidence “IRH Ingénieur Conseil est membre d'Antea Group.” Source: RevenueBase Database · checked Sep 1, 2026
7	Altereo	Indirect evidence	Paris, France	51-200	222 contacts →
	Indirect evidence “Awakening Environmental Smartness.” Source: RevenueBase Database · checked Sep 1, 2026
8	Nepsen	Indirect evidence	Vincennes, France	51-200	219 contacts →
	Indirect evidence “NEPSEN est un bureau d'études indépendant, spécialisé dans les métiers de la transition énergétique & écologique depuis 40 ans.” Source: RevenueBase Database · checked Sep 1, 2026
9	Écosphère	Partial evidence	Vienne, France	201-500	174 contacts →
	Partial evidence “For over 35 years, Écosphère has been providing consulting and engineering services in the environmental field.” Source: RevenueBase Database · checked Sep 1, 2026
10	Tennaxia	Indirect evidence	Bordeaux, France	51-200	167 contacts →
	Indirect evidence “Since 2001 Tennaxia has accompanied industrial companies who are committed to a Corporate and Environmental Responsibility approach and/or who are facing challenges concerning…” Source: RevenueBase Database · checked Sep 1, 2026
11	EVEA	Partial evidence	Troyes, France	51-200	164 contacts →
	Partial evidence “Established in 2015, EVEA is a consulting firm, a software tools publisher, and a training organization.” Source: RevenueBase Database · checked Sep 1, 2026
12	Setec Énergie Environnement	Indirect evidence	Paris, France	51-200	141 contacts →
	Indirect evidence “Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: RevenueBase Database · checked Sep 1, 2026
13	Synergis Environnement	Indirect evidence	Heillecourt, France	51-200	132 contacts →
	Indirect evidence “Synergis Environnement est un bureau d'études indépendant spécialisé dans l'ingénierie environnementale, agricole et réglementaire.” Source: RevenueBase Database · checked Sep 1, 2026
14	Artifex	Indirect evidence	Sainte-Radegonde, France	51-200	124 contacts →
	Indirect evidence “ARTIFEX, une société de SOCOTEC est un bureau d’ingénierie et de conseil en environnement, créé en janvier 1983 et basé à Albi dans le Tarn.” Source: RevenueBase Database · checked Sep 1, 2026
15	Soler IDE	Indirect evidence	St-Cannat, France	51-200	115 contacts →
	Indirect evidence “SOLER IDE est l’un des leaders français du Conseil en Environnement.” Source: RevenueBase Database · checked Sep 1, 2026
16	Tauw France	Indirect evidence	Bordeaux, France	51-200	110 contacts →
	Indirect evidence “est un bureau d’études indépendant qui vous assiste et vous conseille dans toutes vos démarches relatives à l’environnement et au développement durable, notamment sur les plans…” Source: RevenueBase Database · checked Sep 1, 2026
17	Néodyme	Indirect evidence	Lyon, France	51-200	96 contacts →
	Indirect evidence “Néodyme est un bureau d’études, d’assistance technique et de formation indépendant, dans les domaines de la maîtrise des risques industriels, professionnels et environnementaux.” Source: RevenueBase Database · checked Sep 1, 2026
18	Naturalia Environnement	Indirect evidence	Begles, France	51-200	87 contacts →
	Indirect evidence “Fondée en 1998, Naturalia Environnement s’impose aujourd’hui comme un acteur reconnu en matière d’expertises naturalistes et d’études réglementaires portant sur la biodiversité.” Source: RevenueBase Database · checked Sep 1, 2026
19	Utopies	Partial evidence	Paris, France	51-200	82 contacts →
	Partial evidence “UTOPIES is the top French consulting firm dedicated exclusively, since its creation in 1993, to the promotion of sustainable development through consulting and think tank…” Source: RevenueBase Database · checked Sep 1, 2026
20	Etamine	Indirect evidence	Lille, France	51-200	81 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
21	NCA Environnement	Indirect evidence	Hennebont, France	51-200	81 contacts →
	Indirect evidence “Bureau d’étude créé en 1988 et dirigé par Aymeric Minot, nous sommes 70 ingénieurs et techniciens aux profils variés spécialisés en environnement.” Source: RevenueBase Database · checked Sep 1, 2026
22	Solab Ingénierie & Environnement	Indirect evidence	Rennes, France	51-200	73 contacts →
	Indirect evidence “Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Source: RevenueBase Database · checked Sep 1, 2026
23	New-E	Indirect evidence	Paris, France	51-200	72 contacts →
	Indirect evidence “New-e, c'est la société de conseil opérationnel, spécialiste des métiers de la transition durable!” Source: RevenueBase Database · checked Sep 1, 2026
24	Envisol	Indirect evidence	Quebec, France	51-200	70 contacts →
	Indirect evidence “ENVISOL est une entreprise spécialisée dans le conseil et l’ingénierie offrant des prestations dans le domaine des sites et sols pollués.” Source: RevenueBase Database · checked Sep 1, 2026
25	OGI	Indirect evidence	Montreuil, France	51-200	64 contacts →
	Indirect evidence “OGI est un bureau d'études spécialisé en aménagement d’espaces publics.” Source: RevenueBase Database · checked Sep 1, 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: ecological consulting firms. 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 ecological consulting firms.
Partial evidence: Its own public description names part of ecological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ecological consulting firms. 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 951 ecological consulting firms based in France

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Ecological consulting firms based in France at a glance

As of Sep 1, 2026

39.9%Verified-email coverage

1.6%Mobile-number coverage

13.4Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · Paris

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

665

11-50

216

51-200

201-500

501-1,000

5,001-10,000

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 ecological consulting firms, 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 “ecological consulting firms”. 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 ecological consulting firms), 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 ecological consulting firms, 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, 5,063 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 1, 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.

Ecological consulting firms by metro

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 ecological consulting firms, 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 ecological consulting firms are there based in France?

RevenueBase identified 951 ecological consulting firms 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 Cogedis, headquartered in Saint Thonan, tops this list with the largest team on record.

Which city has the most ecological consulting firms?

Paris leads with 113 headquartered companies, followed by Lyon (36) and Bordeaux (16).

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 5,063 verified decision-maker contacts tracked across these 951 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 1, 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.