Company lists · Data refreshed September 2026

Top 25 Greenhouse gas accounting firms based in Paris, France

Name: Greenhouse gas 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 28, 2026 126 companies tracked

RevenueBase identified 126 greenhouse gas accounting firms headquartered in Paris, France as of September 2026 and tracks 3,616 professional contacts across them, including 2,183 with verified work emails. Across France, Paris is the largest hub for this category.

This list covers greenhouse gas 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 28, 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 28, 2026 86% judged on-target in blind review

126Companies

3,616Contacts tracked

2,183Verified emails

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The 25 largest greenhouse gas accounting firms based in Paris, France

Ranked by team size

Top 25 of 126 greenhouse gas accounting firms based in Paris, France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to greenhouse gas 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 28, 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 28, 2026
2	R3	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
3	ARP Astrance	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
4	ROZO	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect evidence “ROZO - Votre partenaire pour une décarbonation réussie!” Source: RevenueBase Database · checked Sep 28, 2026
5	Utopies	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
6	SAMI	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	76 contacts →
	Indirect evidence “Sami: Smart.” Source: RevenueBase Database · checked Sep 28, 2026
7	Aktio Apave Group	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	63 contacts →
	Indirect 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 28, 2026
8	CARBO	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	58 contacts →
	Indirect evidence “What we do?” Source: RevenueBase Database · checked Sep 28, 2026
9	Climateseed	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
10	Carbonfact	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	39 contacts →
	Indirect evidence “Environmental Sustainability Software built for the apparel and footwear industry.” Source: RevenueBase Database · checked Sep 28, 2026
11	Global Climate Initiatives	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Global Climate Initiatives is a special entity whose mission is to provide a new performance lever for stakeholders in the energy transition.” Source: RevenueBase Database · checked Sep 28, 2026
12	Altopi	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
13	LA Belle Empreinte	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
14	NOOCO	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Nooco est une société d’édition de logiciel SaaS qui permet de connaître puis d’optimiser l’empreinte carbone d’un projet de construction depuis son étude, en agissant sur les…” Source: RevenueBase Database · checked Sep 28, 2026
15	DT Master Carbon	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “We accompany companies along the whole net-zero journey.” Source: RevenueBase Database · checked Sep 28, 2026
16	Everimpact	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	22 contacts →
	Strong evidence “Everimpact empowers cities and organizations to physically measure their greenhouse gas emissions in real-time (using satellite, sensor and AI data), identify opportunities to…” Source: RevenueBase Database · checked Sep 28, 2026
17	ANSA	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
18	Eco2 Initiative	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect 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 28, 2026
19	Traace - By Tennaxia	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Traace helps companies regain control of their environmental impact with an all-in-one SaaS platform dedicated to carbon and ESG data, and tailor-made support for climate…” Source: RevenueBase Database · checked Sep 28, 2026
20	Entreprises Engagées	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Entreprises engagées est un cabinet de conseil RSE.” Source: RevenueBase Database · checked Sep 28, 2026
21	Groupe Sacor	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
22	Kabaun	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Kabaun is a cutting-edge API-first Carbon Management Platform, that empowers companies to efficiently manage their carbon data.” Source: RevenueBase Database · checked Sep 28, 2026
23	Qolibris	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Cabinet de conseil Pure Player Data & IA avec une approche durable.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kallpa Énergie Solutions	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
25	ORKI	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 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: greenhouse gas 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 greenhouse gas accounting firms.
Partial evidence: Its own public description names part of greenhouse gas accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name greenhouse gas 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 126 greenhouse gas accounting firms based in Paris, France

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Greenhouse gas accounting firms based in Paris, France at a glance

As of Sep 28, 2026

60.4%Verified-email coverage

28.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

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 126 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 greenhouse gas 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 “greenhouse gas 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 greenhouse gas 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 greenhouse gas 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, 2,183 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 28, 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.

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 greenhouse gas 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 greenhouse gas accounting firms are there based in Paris, France?

RevenueBase identified 126 greenhouse gas 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 in France has the most greenhouse gas accounting firms?

Paris leads France with 126 headquartered companies, followed by Lyon (24) and Nantes (14).

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 2,183 verified decision-maker contacts tracked across these 126 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 28, 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.