Company lists · Data refreshed September 2026
Top 25 Voluntary carbon market platforms worldwide
RevenueBase identified 345 voluntary carbon market platforms worldwide as of September 2026 and tracks 3,556 professional contacts across them, including 1,373 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers voluntary carbon market platforms 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 14, 2026. Country and city lists for voluntary carbon market platforms 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.
The 25 largest voluntary carbon market platforms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 214 contacts → | ||||
Partial evidence “Xpansiv® operates the world’s largest integrated, open and neutral market infrastructure for the global energy transition.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 203 contacts → | ||||
Partial evidence “EKI Energy Services Ltd.(EKI), erstwhile EnKing International in the climate sector globally, is a leading Carbon Credit Developer & Supplier across the globe.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 135 contacts → | ||||
Indirect evidence “Climate Impact Partners is the trusted partner for organizations taking ambitious climate action.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 75 contacts → | ||||
Partial evidence “Carbonext arose from the desire to make a difference.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 66 contacts → | ||||
Strong evidence “ClearBlue empowers clients to take action, manage risk and realize value in the carbon markets via technology-enabled solutions.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 65 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 63 contacts → | ||||
Strong evidence “Climate Connect Digital (CCD) is a climate-tech company with Digital Monitoring Reporting Verification products in carbon markets.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 56 contacts → | ||||
Indirect evidence “SINAI Technologies Inc.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 55 contacts → | ||||
Partial evidence “Pachama has now been acquired by Carbon Direct.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 50 contacts → | ||||
Indirect evidence “Emergent is a non-profit dedicated to accelerating the speed and scale of forest conservation to combat the climate crisis.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 45 contacts → | ||||
Partial evidence “Abatable is a leading provider of carbon credit procurement, intelligence, and advisory solutions.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 45 contacts → | ||||
Strong evidence “Zevero is a leading carbon management platform that empowers organisations to measure, reduce, and report their carbon emissions with precision and efficiency.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 43 contacts → | ||||
Partial evidence “Sustainiam, established in 2023, is revolutionizing the fight against climate change with innovative carbon emission tracking, certificate issuance, and trading services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 42 contacts → | ||||
Strong evidence “CarbonChain's platform enables companies to track, report and reduce their supply chain emissions, covering the most carbon-intensive industries (metals and mining, agriculture…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 41 contacts → | ||||
Partial evidence “Rubicon Carbon is a next-generation carbon solutions provider.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 40 contacts → | ||||
Strong evidence “RenewCred (Net Zero Initiative Private Limited) is a Global South-led carbon credits standard and registry building trust infrastructure for the voluntary carbon market.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 39 contacts → | ||||
Partial evidence “Aither has over a decade of expertise in environmental markets, excelling in global trading of environmental commodities.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 36 contacts → | ||||
Partial evidence “Aurora Sustainable Lands is a carbon-stewardship land management company that invests in industrially harvested forests to deliver high-integrity, verifiable carbon credits to…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 35 contacts → | ||||
Strong evidence “CORE Markets provides market intelligence, advisory and transaction services across power, carbon and environmental markets - serving commercial decision-makers through the energy…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 34 contacts → | ||||
Strong evidence “TEM is a leading Asia-Pacific carbon offsetting solutions provider, across voluntary and compliance markets, including being the largest provider of voluntary Australian carbon…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 33 contacts → | ||||
Partial evidence “Even if we do everything else right on reducing emissions, the world still needs to remove up to 220 Gigatonnes of carbon from the atmosphere by 2050.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 32 contacts → | ||||
Strong evidence “Supercritical is a carbon removal marketplace.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 29 contacts → | ||||
Partial evidence “Australian Integrated Carbon (Ai Carbon) partners with landholders to secure carbon revenue.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Partial evidence “Finite Carbon is North America's leading forest carbon project developer.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Strong evidence “The Climate Action Reserve is the most trusted, efficient and experienced carbon registry for global carbon markets.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
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: voluntary carbon market platforms. 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 voluntary carbon market platforms.
- Partial evidence
- Its own public description names part of voluntary carbon market platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name voluntary carbon market platforms. 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 345 voluntary carbon market platforms worldwide
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Voluntary carbon market platforms worldwide at a glance
As of Sep 14, 2026Companies by employee count
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 voluntary carbon market platforms, 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
- 6 countries, largest first: the United States, the United Kingdom, Brazil, India, Canada, Australia. Country and city lists for voluntary carbon market platforms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “voluntary carbon market platforms”. 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 voluntary carbon market platforms), 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 voluntary carbon market platforms, 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, 1,373 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 14, 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.
Voluntary carbon market platforms by location
6 lists · largest firstEvery Voluntary carbon market platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Voluntary carbon market platforms based in the United States98
- Voluntary carbon market platforms based in the United Kingdom87
- Voluntary carbon market platforms based in Brazil46
- Voluntary carbon market platforms based in India45
- Voluntary carbon market platforms based in Canada38
- Voluntary carbon market platforms based in Australia31
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 voluntary carbon market platforms, 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 voluntary carbon market platforms are there worldwide?
RevenueBase identified 345 voluntary carbon market platforms 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?
Xpansiv, headquartered in New York, tops this list with the largest team on record.
Which country has the most voluntary carbon market platforms?
The United States leads with 98 companies, followed by the United Kingdom (87) and Brazil (46). Every voluntary carbon market platforms list by country and city is linked on this page.
Which city has the most voluntary carbon market platforms?
London leads with 60 headquartered companies, followed by Sao Paulo (20) and New York (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 1,373 verified decision-maker contacts tracked across these 345 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 14, 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.