Company lists · Data refreshed September 2026

Top 25 Carbon accounting firms based in Paris, France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 8, 2026 129 companies tracked

RevenueBase identified 129 carbon accounting firms headquartered in Paris, France as of September 2026 and tracks 3,623 professional contacts across them, including 2,212 with verified work emails and 143 with mobile numbers. Paris is the largest hub.

This list covers carbon accounting firms 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 8, 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 8, 2026 86% judged on-target in blind review

129Companies

3,623Contacts tracked

2,212Verified emails

143Mobile numbers

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The 25 largest carbon accounting firms based in Paris, France

Ranked by team size

Top 25 of 129 carbon accounting firms based in Paris, France, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to carbon accounting 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	Greenflex	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
2	Tennaxia	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	51-200	165 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 8, 2026
3	R3	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
4	ARP Astrance	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
5	ROZO	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	51-200	89 contacts →
	Indirect evidence “ROZO - Votre partenaire pour une décarbonation réussie!” Source: RevenueBase Database · checked Sep 8, 2026
6	Utopies	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
7	Aktio Apave Group	Partial evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
8	Climateseed	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
9	AKTEO	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
10	Carbonfact	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	39 contacts →
	Indirect evidence “Environmental Sustainability Software built for the apparel and footwear industry.” Source: RevenueBase Database · checked Sep 8, 2026
11	Altopi	Indirect evidence	Paris, FranceHQ checked Sep 8, 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 8, 2026
12	LA Belle Empreinte	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	23 contacts →
	Indirect evidence “La Belle Empreinte optimise l’empreinte environnementale et sociale de vos objets avec un angle sectoriel expert (textile B2B et B2C, jouets, décoration etc.)!” Source: RevenueBase Database · checked Sep 8, 2026
13	DT Master Carbon	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	22 contacts →
	Indirect evidence “We accompany companies along the whole net-zero journey.” Source: RevenueBase Database · checked Sep 8, 2026
14	ANSA	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	18 contacts →
	Indirect evidence “Ansa Services is a strategy advisory firm that focuses on creating sustainability-driven value, through strategic and operational shifts that result in resilient models in…” Source: RevenueBase Database · checked Sep 8, 2026
15	Buyyourway	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	16 contacts →
	Indirect evidence “BuyYourWay est un cabinet de conseil en développement durable pour des achats responsables.” Source: RevenueBase Database · checked Sep 8, 2026
16	Eco2 Initiative	Partial evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	15 contacts →
	Partial evidence “ECO2 active les leviers de la transition énergétique et de la performance globale : évaluations environnementales & RSE (audits et bilans carbone, GES, énergie, impacts.) conseils…” Source: RevenueBase Database · checked Sep 8, 2026
17	Entreprises Engagées	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	14 contacts →
	Indirect evidence “Entreprises engagées est un cabinet de conseil RSE.” Source: RevenueBase Database · checked Sep 8, 2026
18	Groupe Sacor	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	12 contacts →
	Indirect evidence “Notre cabinet à taille humaine, situé dans le 9e arrondissement de Paris et dirigé par trois associés experts-comptables et commissaires aux comptes, vous accompagne tout au long…” Source: RevenueBase Database · checked Sep 8, 2026
19	Qolibris	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	12 contacts →
	Indirect evidence “Cabinet de conseil Pure Player Data & IA avec une approche durable.” Source: RevenueBase Database · checked Sep 8, 2026
20	Kallpa Énergie Solutions	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	1-10	12 contacts →
	Indirect evidence “Kallpa Energie Solutions est une société de conseil et d'ingénierie spécialisée dans la performance énergétique.” Source: RevenueBase Database · checked Sep 8, 2026
21	ORKI	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	11 contacts →
	Indirect evidence “Orki transforme les exigences réglementaires et marché en leviers d'action concrets pour simplifier la transition environnementale des entreprises.” Source: RevenueBase Database · checked Sep 8, 2026
22	Green Evénements	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	10 contacts →
	Indirect evidence “Créé en 2009, le cabinet de conseil Green Evénements épaule et encourage la filière événementielle vers plus d'écologie et de solidarité.” Source: RevenueBase Database · checked Sep 8, 2026
23	Solinnen	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	9 contacts →
	Indirect evidence “Solinnen is an independent Paris-based company, in France.” Source: RevenueBase Database · checked Sep 8, 2026
24	Aegilim	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	1-10	8 contacts →
	Indirect evidence “Chez AEGILIM, nous croyons que l’immobilier durable est la clé pour conjuguer impact positif et création de valeur.” Source: RevenueBase Database · checked Sep 8, 2026
25	Virtual Beehive	Indirect evidence	Paris, FranceHQ checked Sep 8, 2026	11-50	8 contacts →
	Indirect evidence “Virtual Beehive – Innovation Serving Performance Founded in 2016, Virtual Beehive is an independent consulting firm specializing in operational performance, regulatory…” Source: RevenueBase Database · checked Sep 8, 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 accounting 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 carbon accounting firms.
Partial evidence: Its own public description names part of carbon accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon accounting 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 129 carbon accounting firms based in Paris, France

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Carbon accounting firms based in Paris, France at a glance

As of Sep 8, 2026

61.1%Verified-email coverage

3.9%Mobile-number coverage

28.1Average contacts per company

1-10Median size (employees)

97.7%Largest-city concentration · Paris

Sep 8, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

2,0390–30

16031–60

061–90

190–180

12180+

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 accounting 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 Paris, France whose own description of what they do matches “carbon accounting 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 carbon accounting 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 carbon accounting firms, 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, 2,212 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 8, 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 accounting firms by metro in France

Carbon accounting firms in Paris126
Carbon accounting firms in Lyon29

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 accounting 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 carbon accounting firms are there based in Paris, France?

RevenueBase identified 129 carbon accounting firms 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 accounting firms?

Paris leads with 126 headquartered companies, followed by Lyon (29) and Nantes (15).

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 2,212 verified decision-maker contacts tracked across these 129 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 8, 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.