Company lists · Data refreshed September 2026

Top 25 Sustainability consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 1,786 companies tracked

RevenueBase identified 1,786 sustainability consulting firms headquartered in France as of September 2026 and tracks 21,923 professional contacts across them, including 8,800 with verified work emails and 1,046 with mobile numbers. Paris is the largest hub.

This list covers sustainability 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 6, 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 6, 2026 86% judged on-target in blind review

1,786Companies

21,923Contacts tracked

8,800Verified emails

1,046Mobile numbers

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The 25 largest sustainability consulting firms based in France

Ranked by team size

Top 25 of 1,786 sustainability consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability 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	Fondasol	Indirect evidence	Avignon, FranceHQ checked Sep 6, 2026	501-1,000	522 contacts →
	“le Groupe Fondasol accompagne les projets de construction et d’aménagement du territoire sur l'ensemble de ses domaines d’expertises.” Source: company website · checked Sep 6, 2026
2	Biotope	Indirect evidence	Mèze, FranceHQ checked Sep 6, 2026	201-500	517 contacts →
	“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: company website · checked Sep 6, 2026
3	Inddigo	Indirect evidence	Chambéry, FranceHQ checked Sep 6, 2026	201-500	436 contacts →
	“Ingénierie du développement durable” Source: company website · checked Sep 6, 2026
4	Greenflex	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	390 contacts →
	“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: company website · checked Sep 6, 2026
5	Eodd Ingénieurs Conseils	Indirect evidence	Villeurbanne, FranceHQ checked Sep 6, 2026	201-500	278 contacts →
	“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: company website · checked Sep 6, 2026
6	KEA & Partners	Partial evidence	Malakoff, FranceHQ checked Sep 6, 2026	201-500	254 contacts →
	“Kea & Partners is the first European strategy consulting firm "Entreprise à Mission", as defined by the Pacte law, and a member of the B Corp community.” Source: company website · checked Sep 6, 2026
7	Seureca	Partial evidence	Aubervilliers, FranceHQ checked Sep 6, 2026	201-500	250 contacts →
	“Seureca is the Consulting Engineering and Strategic and Operational Assistance division of the Veolia Group.” Source: company website · checked Sep 6, 2026
8	Nepsen	Indirect evidence	Vincennes, FranceHQ checked Sep 6, 2026	51-200	220 contacts →
	“NEPSEN est un bureau d'études indépendant, spécialisé dans les métiers de la transition énergétique & écologique depuis 40 ans.” Source: company website · checked Sep 6, 2026
9	Carbone 4	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	208 contacts →
	“Founded by Alain Grandjean and Jean-Marc Jancovici, Carbone 4 is a leading independent consulting firm, specialized in energy transition, that offers its expertise to private or…” Source: company website · checked Sep 6, 2026
10	Altereo	Indirect evidence	Venelles, FranceHQ checked Sep 6, 2026	51-200	203 contacts →
	“Awakening Environmental Smartness.” Source: company website · checked Sep 6, 2026
11	A2 Consulting	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	185 contacts →
	“A2 Consulting est un cabinet de conseil en organisation et management multi-spécialiste et totalement indépendant créé en A2 Consulting s'engage auprès des entreprises pour…” Source: company website · checked Sep 6, 2026
12	Davricourt Certified Positive Company	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	201-500	178 contacts →
	“UNE ENTREPRISE DE CONSEIL ENGAGEE POUR UNE INDUSTRIE PLUS DURABLE Vous souhaitez (re)donner du sens à votre travail?” Source: company website · checked Sep 6, 2026
13	Écosphère	Partial evidence	St.-maurice, FranceHQ checked Sep 6, 2026	201-500	174 contacts →
	“For over 35 years, Écosphère has been providing consulting and engineering services in the environmental field.” Source: company website · checked Sep 6, 2026
14	Tennaxia	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	165 contacts →
	“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: company website · checked Sep 6, 2026
15	EVEA	Partial evidence	Nantes, FranceHQ checked Sep 6, 2026	51-200	164 contacts →
	“Established in 2015, EVEA is a consulting firm, a software tools publisher, and a training organization.” Source: company website · checked Sep 6, 2026
16	IQO	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	156 contacts →
	“In a world that’s constantly being reinvented, where only companies that choose to operate FOR GOOD will succeed in building resilient growth models, where business models combine…” Source: company website · checked Sep 6, 2026
17	R3	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	155 contacts →
	“Expert de la réconciliation entre économie et écologie, R3 fait basculer les entreprises vers une transition environnementale et sociétale réellement performante.” Source: company website · checked Sep 6, 2026
18	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	143 contacts →
	“Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: company website · checked Sep 6, 2026
19	I Care	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	139 contacts →
	“MULTI-EXPERTISE FOR IMPACTFUL SOLUTIONS] I Care by BearingPoint is a leader in impact-driven transformation and BearingPoint's center of expertise for sustainable development.” Source: company website · checked Sep 6, 2026
20	ETYO	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	138 contacts →
	“Created in 2012, Etyo is an independent consulting group organized around three activities- Etyo Real Estate (advice and audit in real estate)- Etyo Logistics Solutions…” Source: company website · checked Sep 6, 2026
21	Ecomundo	Indirect evidence	Issy-les-moulineaux, FranceHQ checked Sep 6, 2026	51-200	138 contacts →
	“Your go-to for regulatory guidance, excelling in global compliance and product stewardship.” Source: company website · checked Sep 6, 2026
22	Ethifinance	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	51-200	132 contacts →
	“Impactful Analysis & Solutions.” Source: company website · checked Sep 6, 2026
23	Synergis Environnement	Indirect evidence	Beaucouzé, FranceHQ checked Sep 6, 2026	51-200	131 contacts →
	“Synergis Environnement est un bureau d'études indépendant spécialisé dans l'ingénierie environnementale, agricole et réglementaire.” Source: company website · checked Sep 6, 2026
24	AETS	Partial evidence	Lons, FranceHQ checked Sep 6, 2026	11-50	128 contacts →
	“AETS is an international and multidisciplinary consulting company specialised in development cooperation and the implementation of public policies.” Source: company website · checked Sep 6, 2026
25	Mediapilote	Indirect evidence	Vertou, FranceHQ checked Sep 6, 2026	51-200	124 contacts →
	“Mediapilote s’engage à accompagner les marques et leurs transformations et évolutions nécessaires dans un monde mouvant.” Source: company website · checked Sep 6, 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: sustainability 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 sustainability consulting firms.
Partial evidence: Its own public description names part of sustainability consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability 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 1,786 sustainability consulting firms based in France

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Sustainability consulting firms based in France at a glance

As of Sep 6, 2026

40.1%Verified-email coverage

4.8%Mobile-number coverage

12.3Average contacts per company

1-10Median size (employees)

25.0%Largest-city concentration · Paris

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

1,418

11-50

274

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

8,2250–30

54231–60

261–90

290–180

29180+

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 sustainability 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 “sustainability 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 sustainability 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 sustainability 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, 8,800 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 6, 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.

Sustainability consulting firms by metro

Sustainability consulting firms in Paris446
Sustainability consulting firms in Lyon70
Sustainability consulting firms in Nantes34
Sustainability consulting firms in Bordeaux32
Sustainability consulting firms in Toulouse31

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 sustainability 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 sustainability consulting firms are there based in France?

RevenueBase identified 1,786 sustainability 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?

Fondasol, headquartered in Avignon, tops this list with the largest team on record.

Which city has the most sustainability consulting firms?

Paris leads with 446 headquartered companies, followed by Lyon (70) and Nantes (34).

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 8,800 verified decision-maker contacts tracked across these 1,786 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 6, 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.