Company lists · Data refreshed November 2026

Top 25 Carbon verification and validation firms worldwide

RevenueBase identified 528 company matches for carbon verification and validation firms worldwide as of November 2026 and tracks 6,137 professional contacts across them, including 2,450 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for carbon verification and validation firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for carbon verification and validation firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
528Companies
6,137Contacts tracked
2,450Verified emails
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The 25 largest carbon verification and validation firms worldwide

Ranked by team size
Top 25 of 528 company matches for carbon verification and validation firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000725 contacts →

Exact match

“As the founder of environmental reporting, we believe in transparency and the power of data to drive change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAmsterdam, NY, United StatesHQ recorded Nov 6, 2026501-1,000566 contacts →

Exact match

“Organizations come to ACT when a climate target, regulatory requirement, or emissions challenge needs a solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMunich, GermanyHQ recorded Nov 6, 2026501-1,000346 contacts →

Exact match

“ClimatePartner makes climate action valuable for every company at any stage of their journey.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200171 contacts →

Exact match

“Investing in carbon projects is essential to tackling climate change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGurgaon, IndiaHQ recorded Nov 6, 202651-200143 contacts →

Exact match

“Earthood is a pioneering force in the carbon offset verification industry with a reputation as an internationally acclaimed auditing & certification firm, providing strategic…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchFaridabad, IndiaHQ recorded Nov 6, 202651-200116 contacts →

Exact match

“KBS Certification is a pioneer and global leader in Climate Change and Sustainability Services, supporting organizations worldwide in achieving compliance, credibility, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“Isometric is the agentic certification platform for the industrial economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchParis, FranceHQ recorded Nov 6, 202651-200108 contacts →

Exact match

“Normec Verifavia is a global leader in environmental validation, verification, and auditing within the transport and industrial sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“ERM CVS provides science-based, independent assurance, verification certification and training services for the world’s leading organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchUnited StatesHQ recorded Nov 6, 2026201-500104 contacts →

Exact match

“Bridge Carbon is a London-based carbon project developer committed to building a world-class carbon finance organization that defines the standards for quality, integrity, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAuckland, New ZealandHQ recorded Nov 6, 202651-20097 contacts →

Exact match

“New Zealand’s science-led standard-bearer for credible climate and environmental certification and solutions, trusted by leading businesses to deliver measurable impact, reduce…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGrenoble - Paris, FranceHQ recorded Nov 6, 202611-5093 contacts →

Exact match

“Carbonable’s platform enables organizations to drive intelligent, scalable, and trustworthy climate contributions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLivange, LuxembourgHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“SustainCERT is a climate impact verifier, bringing credibility to climate action.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026501-1,00066 contacts →

Exact match

“We set the standards to measure and manage emissions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“The Integrity Council for the Voluntary Carbon Market is a non-profit, independent governance body that aims to set and maintain a global standard for high integrity in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchQuito, EcuadorHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“ANAVANLAB | CONFIANZA QUE TRANSFORMA Somos un laboratorio ambiental y organismo de validación y verificación de Huella de Carbono Acreditado bajo las normas ISO 17025, ISO 17029 e…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchGlasgow, United KingdomHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“International Associates (IA) is a leading provider of assessment, audit, verification, certification and training services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchUnited StatesHQ recorded Nov 6, 2026201-50050 contacts →

Exact match

“TPV.com is a leading provider of Third Party Verification and related marketing services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNew York, United StatesHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Tracera is a cutting-edge platform empowering businesses to achieve sustainability goals with high-integrity, auditable ESG data.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSingaporeHQ recorded Nov 6, 202611-5045 contacts →

Exact match

“Confirmis' global site verification network, comprising over qualified and trained verifiers, delivers a location-specific verification process.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBengaluru East, IndiaHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“RenewCred (Net Zero Initiative Private Limited) is a Global South-led carbon credits standard and registry building trust infrastructure for the voluntary carbon market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNoida, IndiaHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“Carbon Check (India) Pvt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“CarbonChain's platform enables companies to track, report and reduce their supply chain emissions, covering the most carbon-intensive industries (metals and mining, agriculture…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchParis, FranceHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“Equitable Earth is the global standard for conservation and restoration projects on the carbon markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSeattle, DC, United StatesHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“The Greenhouse Gas Management Institute (GHGMI) was founded in response to the current and future need for qualified greenhouse gas (GHG) professionals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 528 carbon verification and validation firms worldwide

See the full list, filter by size, metro and specialty, and access 2,450 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Carbon verification and validation firms worldwide at a glance

As of Nov 6, 2026
39.9%Verified-email coverage
11.6Average contacts per company
1-10Median size (employees)
5.3%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
324
11-50
160
51-200
32
201-500
5
501-1,000
5
1,001-5,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for carbon verification and validation firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “carbon verification and validation firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,450 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Carbon verification and validation firms by location

4 lists · largest first

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

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “carbon verification and validation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many carbon verification and validation firms are there worldwide?

RevenueBase identified 528 company matches for carbon verification and validation firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CDP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most carbon verification and validation firms?

The United Kingdom leads with 60 companies, followed by the United States (60) and India (41). Every carbon verification and validation firms list by country and city is linked on this page.

Which city has the most carbon verification and validation firms?

London leads with 28 company records, followed by Paris (8) and Mumbai (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,450 professional contacts with verified work emails tracked across these 528 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.