Company lists · Data refreshed September 2026

Top 25 Carbon verification companies worldwide

Name: Carbon verification companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,234 companies tracked

RevenueBase identified 1,234 carbon verification companies worldwide as of September 2026 and tracks 17,471 professional contacts across them, including 6,027 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers carbon verification companies worldwide, 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. Country and city lists for carbon verification companies follow the table.

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

1,234Companies

17,471Contacts tracked

6,027Verified emails

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The 25 largest carbon verification companies worldwide

Ranked by team size

Top 25 of 1,234 carbon verification companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to carbon verification companies: 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	Ecovadis	Indirect evidence	Paris, JapanHQ checked Sep 19, 2026	1,001-5,000	1,854 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
2	DQS	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 19, 2026	1,001-5,000	1,424 contacts →
	Indirect evidence “DQS – Leveraging Quality, Driving Success.” Source: RevenueBase Database · checked Sep 19, 2026
3	Achilles Information Limited	Partial evidence	Abingdon, United KingdomHQ checked Sep 19, 2026	501-1,000	836 contacts →
	Partial evidence “For more than 30 years, Achilles has protected organisations’ business interests and reputations by providing unrivalled levels of supply chain transparency, carbon reduction and…” Source: RevenueBase Database · checked Sep 19, 2026
4	SCS Global Services	Indirect evidence	Emeryville, CA, United StatesHQ checked Sep 19, 2026	201-500	667 contacts →
	Indirect evidence “Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Source: RevenueBase Database · checked Sep 19, 2026
5	TÜV Rheinland Greater China	Indirect evidence	Shanghai, ChinaHQ checked Sep 19, 2026	5,001-10,000	665 contacts →
	Indirect evidence “An internationally leading independent third-party testing, inspection, certification, training, and consulting organization, TÜV Rheinland has over 150 years of experience.” Source: RevenueBase Database · checked Sep 19, 2026
6	ACT Group	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	501-1,000	556 contacts →
	Indirect evidence “As the leading environmental solutions partner for organizations globally, ACT helps its partners meet increasing environmental action and disclosure expectations from regulators…” Source: RevenueBase Database · checked Sep 19, 2026
7	Climatepartner	Indirect evidence	München, GermanyHQ checked Sep 19, 2026	501-1,000	376 contacts →
	Indirect evidence “ClimatePartner makes climate action valuable for every company at any stage of their journey.” Source: RevenueBase Database · checked Sep 19, 2026
8	EQA España	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	201-500	298 contacts →
	Indirect evidence “EQA es una entidad internacional de certificación, verificación e inspección, con más de 25 años de trayectoria.” Source: RevenueBase Database · checked Sep 19, 2026
9	NQA	Indirect evidence	Dunstable, United KingdomHQ checked Sep 19, 2026	501-1,000	267 contacts →
	Indirect evidence “NQA is a leading global certification body, respected for providing flexible and supportive certification and training services that are technically advanced and meet the needs of…” Source: RevenueBase Database · checked Sep 19, 2026
10	Gscs International	Indirect evidence	Dhaka, BangladeshHQ checked Sep 19, 2026	201-500	167 contacts →
	Indirect evidence “We are GSCS International Ltd, a Bangladesh-based company with global footprint, offers steady, sustainable and enduring development as a provider of certification, assessment…” Source: RevenueBase Database · checked Sep 19, 2026
11	Flocert	Partial evidence	Bonn, GermanyHQ checked Sep 19, 2026	51-200	164 contacts →
	Partial evidence “FLOCERT is one of the world's leading social auditing and certification bodies, providing certification to Fairtrade and also offering verification and customised sustainability…” Source: RevenueBase Database · checked Sep 19, 2026
12	Green Business Certification Inc. Gbci	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	156 contacts →
	Indirect evidence “The premier organization independently recognizing excellence in green business industry performance and practice globally.” Source: RevenueBase Database · checked Sep 19, 2026
13	Earthood	Strong evidence	Gurgaon, IndiaHQ checked Sep 19, 2026	51-200	140 contacts →
	Strong evidence “Earthood is a pioneering force in the carbon offset verification industry with a reputation as an internationally acclaimed auditing & certification firm, providing strategic…” Source: RevenueBase Database · checked Sep 19, 2026
14	Stroma Certification	Indirect evidence	Wakefield, United KingdomHQ checked Sep 19, 2026	201-500	128 contacts →
	Indirect evidence “Elmhurst Energy and Stroma Certification have merged.” Source: RevenueBase Database · checked Sep 19, 2026
15	Ecocert India	Indirect evidence	Bangalore, IndiaHQ checked Sep 19, 2026	11-50	117 contacts →
	Indirect evidence “For over 30 years, we have and continue to assist stakeholders in the implementation and promotion of sustainable practices through certification, consulting and training services.” Source: RevenueBase Database · checked Sep 19, 2026
16	KBS Certification Services LTD	Indirect evidence	Faridabad, IndiaHQ checked Sep 19, 2026	51-200	107 contacts →
	Indirect evidence “KBS Certification is a pioneer and global leader in Climate Change and Sustainability Services, supporting organizations worldwide in achieving compliance, credibility, and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Normec Verifavia	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	105 contacts →
	Partial evidence “Normec Verifavia is a global leader in environmental validation, verification, and auditing within the transport and industrial sectors.” Source: RevenueBase Database · checked Sep 19, 2026
18	Eurocert	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	201-500	102 contacts →
	Indirect evidence “EUROCERT European Inspection and Certification Company, acts as a third party inspection, audit and certification body.” Source: RevenueBase Database · checked Sep 19, 2026
19	ERM CVS	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	100 contacts →
	Partial evidence “ERM CVS provides science-based, independent assurance, verification certification and training services for the world’s leading organizations.” Source: RevenueBase Database · checked Sep 19, 2026
20	Toitū Envirocare	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	51-200	98 contacts →
	Indirect evidence “New Zealand’s science-led standard-bearer for credible climate and environmental certification and solutions, trusted by leading businesses to deliver measurable impact, reduce…” Source: RevenueBase Database · checked Sep 19, 2026
21	Alfanorm Endüstriyel Denetim VE Belgelendirme	Indirect evidence	İstnbul, TürkiyeHQ checked Sep 19, 2026	201-500	98 contacts →
	Indirect evidence “ALFANORM denetim ve belgelendirme sektöründe uzun yıllara dayalı tecrübesi bulunan uzmanlar tarafından kurulmuş bağımsız bir denetim ve belgelendirme firmasıdır.” Source: RevenueBase Database · checked Sep 19, 2026
22	Gutcert Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “In 1997, the GUTcertifizierungsgesellschaft für Managementsysteme (GUT Certification Company for Management Systems) was founded - separated and spun off from the engineering and…” Source: RevenueBase Database · checked Sep 19, 2026
23	Dfge Institute For Energy, Ecology And Economy	Indirect evidence	Greifenberg, GermanyHQ checked Sep 19, 2026	11-50	85 contacts →
	Indirect evidence “Seit unterstützt die DFGE Unternehmen dabei, Nachhaltigkeit messbar und strategisch nutzbar zu machen.” Source: RevenueBase Database · checked Sep 19, 2026
24	Sustaincert	Indirect evidence	Livange, LuxembourgHQ checked Sep 19, 2026	51-200	82 contacts →
	Indirect evidence “SustainCERT is a climate impact verifier, bringing credibility to climate action.” Source: RevenueBase Database · checked Sep 19, 2026
25	Eagle Certification Group	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 19, 2026	11-50	80 contacts →
	Indirect evidence “Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” 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 verification companies. 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 verification companies.
Partial evidence: Its own public description names part of carbon verification companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon verification companies. 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 1,234 carbon verification companies worldwide

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Carbon verification companies worldwide at a glance

As of Sep 19, 2026

34.5%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

724

11-50

384

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 verification companies, 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.
Coverage: Every country. Country and city lists for carbon verification companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “carbon verification companies”. 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 verification companies), 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 verification companies, and records with no verified work email.
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, 6,027 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 verification companies by location

10 lists · largest first

Every Carbon verification companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 verification companies, 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 verification companies are there worldwide?

RevenueBase identified 1,234 carbon verification companies worldwide 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?

Ecovadis, headquartered in Paris, tops this list with the largest team on record.

Which country has the most carbon verification companies?

The United Kingdom leads with 100 companies, followed by the United States (93) and India (81). Every carbon verification companies list by country and city is linked on this page.

Which city has the most carbon verification companies?

London leads with 37 headquartered companies, followed by Madrid (16) and Mumbai (16).

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 6,027 verified decision-maker contacts tracked across these 1,234 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.