Company lists · Data refreshed September 2026
Top 25 Green certification companies worldwide
RevenueBase identified 1,967 green certification companies worldwide as of September 2026 and tracks 17,785 professional contacts across them, including 5,232 with verified work emails. The United States is the largest market and London the largest hub.
This list covers green certification 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 20, 2026. Country and city lists for green certification 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.
The 25 largest green certification companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 809 contacts → | ||||
Partial evidence “For over 30 years, ECOCERT has and continues to assist stakeholders in the implementation and promotion of sustainable practices through certification, consulting and training.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 667 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 400 contacts → | ||||
Indirect evidence “SIPL Pvt Ltd is an established and reputed firm in the Sustainable domain since 2008.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 361 contacts → | ||||
Indirect evidence “Preferred by Nature is an international non-profit organisation working to support better land management and business practices that benefit people, nature and the climate.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 217 contacts → | ||||
Indirect evidence “Design2Occupancy Services LLP (D2O) is a leading organization providing a platform and solutions in Energy Efficiency Analysis and Energy Code Compliances, Climate Change…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 214 contacts → | ||||
Indirect evidence “A organização pertence ao Grupo Fragnani, o qual é formado por quatro indústrias: Incefra, Incenor, Tecnogres e Mineradora Água Branca e está posicionado entre as maiores empresas…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 200 contacts → | ||||
Partial evidence “ICEA, Institute for Ethical and Environmental Certification, is a nonprofit consortium with the participation of institutions, associations, companies and civil society…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 174 contacts → | ||||
Indirect evidence “Bem-vindo à página da ADENE - Agência para a Energia!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 174 contacts → | ||||
Indirect evidence “Impulsamos la sostenibilidad empresarial con soluciones técnicas y reales.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 156 contacts → | ||||
Partial evidence “The premier organization independently recognizing excellence in green business industry performance and practice globally.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 143 contacts → | ||||
Indirect evidence “GreenTree Global is one of the leading Sustainability Consulting organisations providing Energy Efficiency & Climate Change Services like Integrated Sustainability Services…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 140 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 128 contacts → | ||||
Partial evidence “Elmhurst Energy and Stroma Certification have merged.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 127 contacts → | ||||
Indirect evidence “DGE i Sverige grundades 2004 med tydligt fokus på miljöfrågor, kundrelationer och medarbetare.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 110 contacts → | ||||
Indirect evidence “Environmental Design Solutions [EDS] is a sustainability advisory firm focusing on the built environment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 109 contacts → | ||||
Indirect evidence “The German Sustainable Building Council (DGNB) is a central knowledge platform for sustainable building.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 107 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 105 contacts → | ||||
Indirect evidence “Normec Verifavia is a global leader in environmental validation, verification, and auditing within the transport and industrial sectors.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 103 contacts → | ||||
Indirect evidence “Embalando o mundo de forma sustentável.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 98 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 92 contacts → | ||||
Indirect evidence “AES Sustainability Consultants is a leading technical consultancy that delivers value engineered solutions across the homebuilding and construction industries.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 91 contacts → | ||||
Indirect evidence “ICMQ è un organismo di certificazione italiano specializzato nella certificazione di prodotti, processi, sistemi di gestione e competenze professionali, con servizi di ispezione…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 91 contacts → | ||||
Indirect evidence “Agenzia per l'Energia Alto Adige - CasaClima è un ente pubblico economico che si occupa della certificazione energetica e ambientale di edifici e prodotti.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 89 contacts → | ||||
Partial evidence “Verdani Partners is a full service sustainability consulting firm specialized in corporate sustainability, LEED certification and greening and retrofitting existing buildings.” Source: RevenueBase Database · checked Sep 20, 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: green certification 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 green certification companies.
- Partial evidence
- Its own public description names part of green certification companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name green certification 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 1,967 green certification companies worldwide
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Green certification companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
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 green certification 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 green certification companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “green certification 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 green certification 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 green certification 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, 5,232 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 20, 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.
Green certification companies by location
21 lists · largest firstEvery Green certification companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Green certification companies based in the United States178
- Green certification companies based in Brazil167
- Green certification companies based in India100
- Green certification companies based in the United Kingdom97
- Green certification companies based in Spain86
- Green certification companies based in Italy81
- Green certification companies based in France76
- Green certification companies based in Germany74
- Green certification companies based in Türkiye53
- Green certification companies based in Portugal48
- Green certification companies based in the Netherlands47
- Green certification companies based in Australia44
- Green certification companies based in the United Arab Emirates44
- Green certification companies based in Canada40
- Green certification companies based in Argentina33
- Green certification companies based in Indonesia32
- Green certification companies based in Mexico31
- Green certification companies based in Sweden30
- Green certification companies based in South Africa28
- Green certification companies based in Belgium26
- Green certification companies based in Switzerland25
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 green certification 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 green certification companies are there worldwide?
RevenueBase identified 1,967 green certification 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?
Ecocert Group, headquartered in Worldwide, tops this list with the largest team on record.
Which country has the most green certification companies?
The United States leads with 178 companies, followed by Brazil (167) and India (100). Every green certification companies list by country and city is linked on this page.
Which city has the most green certification companies?
London leads with 33 headquartered companies, followed by Sao Paulo (26) and Madrid (22).
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 5,232 verified decision-maker contacts tracked across these 1,967 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 20, 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.