Company lists · Data refreshed September 2026

Top 25 Carbon reduction consultants based in Paris, France

Name: Carbon reduction consultants based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 254 companies tracked

RevenueBase identified 254 carbon reduction consultants headquartered in Paris, France as of September 2026 and tracks 3,188 professional contacts across them, including 1,419 with verified work emails. Paris is the largest hub.

This list covers carbon reduction consultants 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 19, 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 19, 2026 86% judged on-target in blind review

254Companies

3,188Contacts tracked

1,419Verified emails

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The 25 largest carbon reduction consultants based in Paris, France

Ranked by team size

Top 25 of 254 carbon reduction consultants based in Paris, France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to carbon reduction consultants: 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 19, 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 19, 2026
2	Carbone 4	Partial evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
3	R3	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	155 contacts →
	Indirect 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 19, 2026
4	ECO Co2	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	109 contacts →
	Indirect evidence “Eco CO2 se positionne sur le marché de l'environnement et du développement durable.” Source: RevenueBase Database · checked Sep 19, 2026
5	ARP Astrance	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
6	Sinteo	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
7	LGI Sustainable Innovation	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	93 contacts →
	Partial evidence “LGI is a European sustainable innovation consultancy delivering Innovation Strategy, Financing, Management & Communication services for public & private innovators.” Source: RevenueBase Database · checked Sep 19, 2026
8	ROZO	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	89 contacts →
	Indirect evidence “ROZO - Votre partenaire pour une décarbonation réussie!” Source: RevenueBase Database · checked Sep 19, 2026
9	Utopies	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
10	Métiga	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	81 contacts →
	Indirect evidence “MÉTIGA est une entreprise à mission, engagée en faveur de la transition énergétique, environnementale et sociétale.” Source: RevenueBase Database · checked Sep 19, 2026
11	Aktio Apave Group	Partial evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
12	Erese Groupe Scet HTC	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
13	Groupe Herve S.A	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1,001-5,000	57 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
14	ACE Energie	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
15	Sobre Energie	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect 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 19, 2026
16	DES Enjeux ET DES Hommes	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	48 contacts →
	Indirect evidence “Des Enjeux et Des Homme est un cabinet spécialisé dans la transformation des entreprises et organisations vers des écosystèmes soutenables et résilients.” Source: RevenueBase Database · checked Sep 19, 2026
17	E-Cube Strategy Consultants	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence “E-CUBE, the strategy consulting firm dedicated to energy, transport and climate stakes We combine innovative strategic thinking with deep industry expertise to deliver outstanding…” Source: RevenueBase Database · checked Sep 19, 2026
18	Climateseed	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “ClimateSeed combines strategic consulting and digital platforms to help organizations design and deploy ambitious climate strategies.” Source: RevenueBase Database · checked Sep 19, 2026
19	AKTEO	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “AKTEO est la société de conseil, d’ingénierie et de formation en décarbonation.” Source: RevenueBase Database · checked Sep 19, 2026
20	Omnegy By Epsa	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
21	Carbometrix	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “Carbometrix guides private-market professionals and their portfolio companies in effective decarbonization.” Source: RevenueBase Database · checked Sep 19, 2026
22	Ecoact France	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	201-500	30 contacts →
	Indirect evidence “EcoAct est une société internationale de conseil et de développement de projets qui accompagne entreprises, organisations, institutions et territoires afin de leur offrir la gamme…” Source: RevenueBase Database · checked Sep 19, 2026
23	Wild Trees	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “WILD TREES est une société de conseil indépendante, spécialiste des enjeux écologiques, énergétiques et climatiques.” Source: RevenueBase Database · checked Sep 19, 2026
24	Altopi	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Altopi, Solutions durables pour entreprises engagées Altopi accompagne les PME et ETI dans leur transition sociétale et écologique.” Source: RevenueBase Database · checked Sep 19, 2026
25	DT Master Carbon	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “We accompany companies along the whole net-zero journey.” Source: RevenueBase Database · checked Sep 19, 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: carbon reduction consultants. 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 carbon reduction consultants.
Partial evidence: Its own public description names part of carbon reduction consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon reduction consultants. 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 254 carbon reduction consultants based in Paris, France

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Carbon reduction consultants based in Paris, France at a glance

As of Sep 19, 2026

44.5%Verified-email coverage

12.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

177

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 254 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 carbon reduction consultants, 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 “carbon reduction consultants”. 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 carbon reduction consultants), 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 carbon reduction consultants, 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, 1,419 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 19, 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.

Carbon reduction consultants by metro in France

Carbon reduction consultants in Paris254
Carbon reduction consultants in Lyon57
Carbon reduction consultants in Toulouse36

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 carbon reduction consultants, 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 carbon reduction consultants are there based in Paris, France?

RevenueBase identified 254 carbon reduction consultants 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 has the most carbon reduction consultants?

Paris leads with 254 headquartered companies, followed by Lyon (57) and Toulouse (36).

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 1,419 verified decision-maker contacts tracked across these 254 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 19, 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.