Company lists · Data verified August 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 Verified Aug 28, 2026 951 companies tracked

There are 951 ecological consulting firms headquartered in France (RevenueBase, August 2026). RevenueBase 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. Data current as of August 28, 2026.

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 verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Groupe Cogedis	Saint Thonan	501-1,000	650	318
2	Biotope	Meze	201-500	524	309
3	Cabinet Merlin	Lyon	501-1,000	482	265
4	Brézillon	Saint-Porchaire	51-200	288	82
5	Eodd Ingénieurs Conseils	La Rochelle	201-500	279	212
6	IRH Ingenieur Conseil	Ludres	51-200	235	76
7	Altereo	Paris	51-200	222	144
8	Nepsen	Vincennes	51-200	219	136
9	Écosphère	Vienne	201-500	174	131
10	Tennaxia	Bordeaux	51-200	167	103
11	EVEA	Troyes	51-200	164	113
12	Setec Énergie Environnement	Paris	51-200	141	52
13	Synergis Environnement	Heillecourt	51-200	132	90
14	Artifex	Sainte-Radegonde	51-200	124	81
15	Soler IDE	St-Cannat	51-200	115	81
16	Tauw France	Bordeaux	51-200	110	59
17	Néodyme	Lyon	51-200	96	52
18	Naturalia Environnement	Begles	51-200	87	53
19	Utopies	Paris	51-200	82	42
20	Etamine	Lille	51-200	81	63
21	NCA Environnement	Hennebont	51-200	81	43
22	Solab Ingénierie & Environnement	Rennes	51-200	73	49
23	New-E	Paris	51-200	72	52
24	Envisol	Quebec	51-200	70	42
25	OGI	Montreuil	51-200	64	49

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 Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 113 HQs

207Contacts with mobile numbers

10Emails re-verified in last 30 days

Companies by employee count

1-10

665

11-50

216

51-200

201-500

501-1,000

5,001-10,000

Ecological consulting firms by metro

Metro	Companies
Ecological consulting firms in Paris	113
Ecological consulting firms in Lyon	36
Ecological consulting firms in Bordeaux	16
Ecological consulting firms in Montpellier	15
Ecological consulting firms in Nantes	14
Ecological consulting firms in Toulouse	10
Ecological consulting firms in Lille	9

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “ecological consulting firms”, with match quality audited by blind human judging, and headquartered in France.
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: Contact records re-verify on a rolling cadence; 10 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many ecological consulting firms are there based in France?

There are 951 ecological consulting firms headquartered in France as of August 2026 (RevenueBase).

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 is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.