Company lists · Data refreshed September 2026

Top 25 Climate transition consultancies based in Paris, France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 424 companies tracked

RevenueBase identified 424 climate transition consultancies headquartered in Paris, France as of September 2026 and tracks 5,769 professional contacts across them, including 2,653 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers climate transition 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 27, 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 27, 2026 86% judged on-target in blind review

424Companies

5,769Contacts tracked

2,653Verified emails

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The 25 largest climate transition consultancies based in Paris, France

Ranked by team size

Top 25 of 424 climate transition consultancies based in Paris, France, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to climate transition 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	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	501-1,000	390 contacts →
	Indirect 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 27, 2026
2	Vertone	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	214 contacts →
	Indirect evidence “Vertone, engagés pour réussir Présents à Paris et désormais à Lyon!” Source: RevenueBase Database · checked Sep 27, 2026
3	Carbone 4	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	208 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 27, 2026
4	A2 Consulting	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	185 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026
5	Espelia	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	163 contacts →
	Indirect evidence “For nearly 30 years, Espelia International has been advising public decision-makers in emerging and developing countries, as well as funders, on the design and implementation of…” Source: RevenueBase Database · checked Sep 27, 2026
6	IQO	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	156 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026
7	R3	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	155 contacts →
	Partial evidence “Expert de la réconciliation entre économie et écologie, R3 fait basculer les entreprises vers une transition environnementale et sociétale réellement performante.” Source: RevenueBase Database · checked Sep 27, 2026
8	I Care	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	139 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026
9	Blunomy	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	122 contacts →
	Indirect evidence “Blunomy brings together deep sector knowledge, technical and data expertise, and real-world business and investment experience.” Source: RevenueBase Database · checked Sep 27, 2026
10	ARP Astrance	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	105 contacts →
	Indirect evidence “Aujourd’hui ARP Astrance regroupe plus de 100 collaborateurs et intervient en tant que conseil, AMO, project manager, BE environnement, écologue sur les projets en développement…” Source: RevenueBase Database · checked Sep 27, 2026
11	Sinteo	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	96 contacts →
	Indirect evidence “Depuis 2008, nous accompagnons nos clients dans la triple révolution – environnementale, digitale et des usages – qui bouleverse l’immobilier.” Source: RevenueBase Database · checked Sep 27, 2026
12	LGI Sustainable Innovation	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	93 contacts →
	Indirect evidence “LGI is a European sustainable innovation consultancy delivering Innovation Strategy, Financing, Management & Communication services for public & private innovators.” Source: RevenueBase Database · checked Sep 27, 2026
13	ROZO	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	89 contacts →
	Indirect evidence “ROZO - Votre partenaire pour une décarbonation réussie!” Source: RevenueBase Database · checked Sep 27, 2026
14	BL Évolution	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	89 contacts →
	Indirect evidence “Conseil et accompagnement en stratégie RSE et Développement Durable.” Source: RevenueBase Database · checked Sep 27, 2026
15	Oasiis	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	87 contacts →
	Indirect evidence “QUI SOMMES NOUS?” Source: RevenueBase Database · checked Sep 27, 2026
16	Lamarck Group	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	201-500	86 contacts →
	Indirect evidence “Lamarck est un groupe de conseil en transformation des entreprises.” Source: RevenueBase Database · checked Sep 27, 2026
17	Utopies	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	81 contacts →
	Indirect 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 27, 2026
18	Métiga	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	81 contacts →
	Partial evidence “MÉTIGA est une entreprise à mission, engagée en faveur de la transition énergétique, environnementale et sociétale.” Source: RevenueBase Database · checked Sep 27, 2026
19	DO Well DO Good	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	73 contacts →
	Indirect evidence “More than ever the world needs a new paradigm, combining economic performance and social and environmental impact.” Source: RevenueBase Database · checked Sep 27, 2026
20	RE SET	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	66 contacts →
	Partial evidence “RE)SET is a company dedicated to circular economy, with a sharp method to boost the ecological transition.” Source: RevenueBase Database · checked Sep 27, 2026
21	Agence Parisienne DU Climat	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	64 contacts →
	Partial evidence “FB : https://bit.ly/2HVhW93 TW : https://bit.ly/2ykTFK3 Créée à l’initiative de la Ville de Paris en 2011, pour accompagner la mise en œuvre de son Plan Climat, l’Agence…” Source: RevenueBase Database · checked Sep 27, 2026
22	Association Bilan Carbone	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	64 contacts →
	Indirect evidence “The ABC is a French non-profit organization, mobilizing public and private stakeholders in the field of GHG emission reduction, coming from the business and consulting area to the…” Source: RevenueBase Database · checked Sep 27, 2026
23	Aktio Apave Group	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	63 contacts →
	Partial evidence “Our mission : Aktio supports companies in their low-carbon transition, with our carbon footprint platform, our expertise and our network of partners to reduce emissions.” Source: RevenueBase Database · checked Sep 27, 2026
24	Erese Groupe Scet HTC	Indirect evidence	Paris, FranceHQ checked Sep 27, 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 27, 2026
25	Transitions	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	56 contacts →
	Partial evidence “TRANSITIONS, agence de conseil en stratégie du développement durable, conduit des missions au niveau national et international, auprès de collectivités locales, d’entreprises, de…” Source: RevenueBase Database · checked Sep 27, 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: climate transition 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 climate transition consultancies.
Partial evidence: Its own public description names part of climate transition consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate transition 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 424 climate transition consultancies based in Paris, France

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Climate transition consultancies based in Paris, France at a glance

As of Sep 27, 2026

46.0%Verified-email coverage

13.6Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

300

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 424 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 climate transition 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 “climate transition 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 climate transition 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 climate transition 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, 2,653 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 27, 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.

Climate transition 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 climate transition 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 climate transition consultancies are there based in Paris, France?

RevenueBase identified 424 climate transition 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 climate transition consultancies?

Paris leads France with 424 headquartered companies, followed by Lyon (70) and Toulouse (32).

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 2,653 verified decision-maker contacts tracked across these 424 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 27, 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.