Company lists · Data refreshed November 2026
Top 25 Clean tech companies worldwide
RevenueBase identified 3,200 company matches for clean tech companies worldwide as of November 2026 and tracks 150,531 professional contacts across them, including 47,068 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for clean tech companies 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 clean tech companies 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.
The 25 largest clean tech companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 33,268 contacts → | ||||
Exact match “Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 13,752 contacts → | ||||
Exact match “Trane Technologies is a global climate innovator advancing sustainability through our leading brands Trane® and Thermo King®, which bring efficient and sustainable climate…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 10,403 contacts → | ||||
Exact match “Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 9,075 contacts → | ||||
Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 7,986 contacts → | ||||
Exact match “Johnson Matthey (JM) is a world leader in platinum group metals (PGMs).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 6,979 contacts → | ||||
Exact match “alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 3,074 contacts → | ||||
Exact match “The Voith Group is a global technology company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 2,980 contacts → | ||||
Exact match “Veolia UK provides solutions for ecological transformation which means reconciling human progress with environmental protection.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 2,723 contacts → | ||||
Exact match “Topsoe is a leading global provider of technology and solutions for the energy transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 2,347 contacts → | ||||
Exact match “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 2,264 contacts → | ||||
Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 1,135 contacts → | ||||
Exact match “Since 1981, AB has tackled the challenges posed by energy sustainability, working alongside our customers to improve their competitiveness while saving energy and reducing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 899 contacts → | ||||
Exact match “Franklin Energy delivers end-to-end sustainability solutions through a portfolio of intelligent products and services that lower energy costs, reduce carbon and waste, and grow…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 755 contacts → | ||||
Exact match “INERCO is a multinational technology company specialising in sustainability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 698 contacts → | ||||
Exact match “We are passionate about driving sustainable change for our planet.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 589 contacts → | ||||
Exact match “Watershed is the enterprise sustainability platform.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 566 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 | |||||
| 18 | 502 contacts → | ||||
Exact match “We’re helping companies in every industry, in every corner of the globe make real progress.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 494 contacts → | ||||
Exact match “Nous sommes des femmes et des hommes engagés, qui chaque matin se lèvent avec une mission : être des acteurs clés de la transition énergétique.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 490 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 474 contacts → | ||||
Exact match “Westport is a clean-tech innovation company, providing simplified solutions to decarbonize.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 472 contacts → | ||||
Exact match “Our mission: We’ve been on a mission to help identify energy waste, save costs and reduce carbon emissions for more than 40 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 464 contacts → | ||||
Exact match “Chakr Innovation is a pioneering Indian cleantech startup, founded by IIT Delhi graduates, dedicated to revolutionizing air quality with cutting-edge material science technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 387 contacts → | ||||
Exact match “Photon Energy Group is a group of companies with a shared mission: making clean energy, clean water and clean environments accessible to all.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 374 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “clean tech companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 3,200 clean tech companies worldwide
See the full list, filter by size, metro and specialty, and access 47,068 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Clean tech companies worldwide at a glance
As of Nov 6, 2026Companies by employee count
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 clean tech companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “clean tech companies” 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 47,068 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.
Clean tech companies by location
22 lists · largest firstEvery Clean tech companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Clean tech companies based in the United States377
- Clean tech companies based in India249
- Clean tech companies based in the United Kingdom180
- Clean tech companies based in Brazil156
- Clean tech companies based in Italy115
- Clean tech companies based in Canada110
- Clean tech companies based in France97
- Clean tech companies based in Spain96
- Clean tech companies based in Australia89
- Clean tech companies based in Germany79
- Clean tech companies based in Mexico75
- Clean tech companies based in Türkiye68
- Clean tech companies based in the Netherlands48
- Clean tech companies based in Chile40
- Clean tech companies based in the United Arab Emirates40
- Clean tech companies based in Poland33
- Clean tech companies based in Indonesia29
- Clean tech companies based in Portugal29
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 “clean tech companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many clean tech companies are there worldwide?
RevenueBase identified 3,200 company matches for clean tech companies 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?
Veolia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most clean tech companies?
The United States leads with 377 companies, followed by India (249) and the United Kingdom (180). Every clean tech companies list by country and city is linked on this page.
Which city has the most clean tech companies?
London leads with 61 company records, followed by Sao Paulo (30) and Dubai (28).
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 47,068 professional contacts with verified work emails tracked across these 3,200 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.
Ready to reach these companies? Verified emails and direct dials for all 3,200 clean tech companies worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 clean tech companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,200 matching company records for clean tech companies worldwide, with 150,531 tracked contacts and 47,068 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 clean tech companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Veoliaveolia.comHQ: Aubervilliers, FranceReported employees: 10001+ | Aubervilliers, France | 10001+ | Exact match | 33,268 contacts → |
“Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Trane Technologiestranetechnologies.comHQ: Davidson, NC, United StatesReported employees: 10001+ | Davidson, NC, United States | 10001+ | Exact match | 13,752 contacts → |
“Trane Technologies is a global climate innovator advancing sustainability through our leading brands Trane® and Thermo King®, which bring efficient and sustainable climate…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Carrier Hvaccarrier.comHQ: United StatesReported employees: 10001+ | United States | 10001+ | Exact match | 10,403 contacts → |
“Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Dalkiadalkia.frHQ: Saint-andré-lez-lille, FranceReported employees: 10001+ | Saint-andré-lez-lille, France | 10001+ | Exact match | 9,075 contacts → |
“Dalkia : ensemble, relevons le défi climatique!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Johnson Mattheymatthey.comHQ: Royston, United KingdomReported employees: 5,001-10,000 | Royston, United Kingdom | 5,001-10,000 | Exact match | 7,986 contacts → |
“Johnson Matthey (JM) is a world leader in platinum group metals (PGMs).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Alfanaralfanar.comHQ: Riyadh, Saudi ArabiaReported employees: 10001+ | Riyadh, Saudi Arabia | 10001+ | Exact match | 6,979 contacts → |
“alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Voith Groupvoith.comHQ: Heidenheim An Der Brenz, GermanyReported employees: 10001+ | Heidenheim An Der Brenz, Germany | 10001+ | Exact match | 3,074 contacts → |
“The Voith Group is a global technology company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Veolia UKveolia.co.ukHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 2,980 contacts → |
“Veolia UK provides solutions for ecological transformation which means reconciling human progress with environmental protection.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Topsoetopsoe.comHQ: Kongens Lyngby, United StatesReported employees: 1,001-5,000 | Kongens Lyngby, United States | 1,001-5,000 | Exact match | 2,723 contacts → |
“Topsoe is a leading global provider of technology and solutions for the energy transition.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Mckinstrymckinstry.comHQ: Seattle, WA, United StatesReported employees: 1,001-5,000 | Seattle, WA, United States | 1,001-5,000 | Exact match | 2,347 contacts → |
“We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Clearesultclearesult.comHQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 2,264 contacts → |
“CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Gruppo ABgruppoab.comHQ: Orzinuovi, United KingdomReported employees: 1,001-5,000 | Orzinuovi, United Kingdom | 1,001-5,000 | Exact match | 1,135 contacts → |
“Since 1981, AB has tackled the challenges posed by energy sustainability, working alongside our customers to improve their competitiveness while saving energy and reducing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Franklin Energyfranklinenergy.comHQ: Port Washington, WI, United StatesReported employees: 1,001-5,000 | Port Washington, WI, United States | 1,001-5,000 | Exact match | 899 contacts → |
“Franklin Energy delivers end-to-end sustainability solutions through a portfolio of intelligent products and services that lower energy costs, reduce carbon and waste, and grow…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Inercoinerco.comHQ: Seville, SpainReported employees: 1,001-5,000 | Seville, Spain | 1,001-5,000 | Exact match | 755 contacts → |
“INERCO is a multinational technology company specialising in sustainability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  KBC A Yokogawa Companykbc.globalHQ: Walton-on-thames, United KingdomReported employees: 201-500 | Walton-on-thames, United Kingdom | 201-500 | Exact match | 698 contacts → |
“We are passionate about driving sustainable change for our planet.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Watershedwatershed.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 589 contacts → |
“Watershed is the enterprise sustainability platform.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  ACT Groupbrnw.chHQ: Amsterdam, NY, United StatesReported employees: 501-1,000 | Amsterdam, NY, United States | 501-1,000 | Exact match | 566 contacts → |
“Organizations come to ACT when a climate target, regulatory requirement, or emissions challenge needs a solution.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Dupont Water Solutionsdupont.comHQ: Wilmington, DE, United StatesReported employees: 10001+ | Wilmington, DE, United States | 10001+ | Exact match | 502 contacts → |
“We’re helping companies in every industry, in every corner of the globe make real progress.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  CRAMcram.frHQ: Le Havre, FranceReported employees: 501-1,000 | Le Havre, France | 501-1,000 | Exact match | 494 contacts → |
“Nous sommes des femmes et des hommes engagés, qui chaque matin se lèvent avec une mission : être des acteurs clés de la transition énergétique.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Siemens Energy Productssiemens-energy.comHQ: United StatesReported employees: 10001+ | United States | 10001+ | Exact match | 490 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  Westport Fuel Systemswestport.comHQ: Vancouver, BC, CanadaReported employees: 51-200 | Vancouver, BC, Canada | 51-200 | Exact match | 474 contacts → |
“Westport is a clean-tech innovation company, providing simplified solutions to decarbonize.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  STARKstark.co.ukHQ: Horley, United KingdomReported employees: 201-500 | Horley, United Kingdom | 201-500 | Exact match | 472 contacts → |
“Our mission: We’ve been on a mission to help identify energy waste, save costs and reduce carbon emissions for more than 40 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Chakr Innovationchakr.inHQ: Gurgaon, IndiaReported employees: 501-1,000 | Gurgaon, India | 501-1,000 | Exact match | 464 contacts → |
“Chakr Innovation is a pioneering Indian cleantech startup, founded by IIT Delhi graduates, dedicated to revolutionizing air quality with cutting-edge material science technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Photon Energy Groupphotonenergy.comHQ: Amsterdam, NetherlandsReported employees: 201-500 | Amsterdam, Netherlands | 201-500 | Exact match | 387 contacts → |
“Photon Energy Group is a group of companies with a shared mission: making clean energy, clean water and clean environments accessible to all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Greenflexgreenflex.comHQ: Paris, FranceReported employees: 501-1,000 | Paris, France | 501-1,000 | Exact match | 374 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,200 company matches
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Clean tech companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,180 records in the displayed employee bands.
20 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,200 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Clean tech companies by location
22 lists · largest firstEvery Clean tech companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Clean tech companies based in the United States377
- Clean tech companies based in India249
- Clean tech companies based in the United Kingdom180
- Clean tech companies based in Brazil156
- Clean tech companies based in Italy115
- Clean tech companies based in Canada110
- Clean tech companies based in France97
- Clean tech companies based in Spain96
- Clean tech companies based in Australia89
- Clean tech companies based in Germany79
- Clean tech companies based in Mexico75
- Clean tech companies based in Türkiye68
- Clean tech companies based in the Netherlands48
- Clean tech companies based in Chile40
- Clean tech companies based in the United Arab Emirates40
- Clean tech companies based in Poland33
- Clean tech companies based in Indonesia29
- Clean tech companies based in Portugal29
Cities
Questions about this company list
What does Exact match mean for clean tech companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many clean tech companies did RevenueBase find worldwide?
The saved snapshot records 3,200 matching company records, 150,531 tracked contacts and 47,068 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 clean tech companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/clean-tech-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 clean tech companies worldwide
RevenueBase records 3,200 matching company records for clean tech companies worldwide, with 150,531 tracked contacts and 47,068 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 clean tech companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Veoliaveolia.com HQ: Aubervilliers, FranceReported employees: 10001+ | Aubervilliers, France | 10001+ | Exact match | 33,268 contacts → |
“Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Trane Technologiestranetechnologies.com HQ: Davidson, NC, United StatesReported employees: 10001+ | Davidson, NC, United States | 10001+ | Exact match | 13,752 contacts → |
“Trane Technologies is a global climate innovator advancing sustainability through our leading brands Trane® and Thermo King®, which bring efficient and sustainable climate…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Carrier Hvaccarrier.com HQ: United StatesReported employees: 10001+ | United States | 10001+ | Exact match | 10,403 contacts → |
“Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Dalkiadalkia.fr HQ: Saint-andré-lez-lille, FranceReported employees: 10001+ | Saint-andré-lez-lille, France | 10001+ | Exact match | 9,075 contacts → |
“Dalkia : ensemble, relevons le défi climatique!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Johnson Mattheymatthey.com HQ: Royston, United KingdomReported employees: 5,001-10,000 | Royston, United Kingdom | 5,001-10,000 | Exact match | 7,986 contacts → |
“Johnson Matthey (JM) is a world leader in platinum group metals (PGMs).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Alfanaralfanar.com HQ: Riyadh, Saudi ArabiaReported employees: 10001+ | Riyadh, Saudi Arabia | 10001+ | Exact match | 6,979 contacts → |
“alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Voith Groupvoith.com HQ: Heidenheim An Der Brenz, GermanyReported employees: 10001+ | Heidenheim An Der Brenz, Germany | 10001+ | Exact match | 3,074 contacts → |
“The Voith Group is a global technology company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Veolia UKveolia.co.uk HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 2,980 contacts → |
“Veolia UK provides solutions for ecological transformation which means reconciling human progress with environmental protection.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Topsoetopsoe.com HQ: Kongens Lyngby, United StatesReported employees: 1,001-5,000 | Kongens Lyngby, United States | 1,001-5,000 | Exact match | 2,723 contacts → |
“Topsoe is a leading global provider of technology and solutions for the energy transition.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mckinstrymckinstry.com HQ: Seattle, WA, United StatesReported employees: 1,001-5,000 | Seattle, WA, United States | 1,001-5,000 | Exact match | 2,347 contacts → |
“We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Clearesultclearesult.com HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 2,264 contacts → |
“CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Gruppo ABgruppoab.com HQ: Orzinuovi, United KingdomReported employees: 1,001-5,000 | Orzinuovi, United Kingdom | 1,001-5,000 | Exact match | 1,135 contacts → |
“Since 1981, AB has tackled the challenges posed by energy sustainability, working alongside our customers to improve their competitiveness while saving energy and reducing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Franklin Energyfranklinenergy.com HQ: Port Washington, WI, United StatesReported employees: 1,001-5,000 | Port Washington, WI, United States | 1,001-5,000 | Exact match | 899 contacts → |
“Franklin Energy delivers end-to-end sustainability solutions through a portfolio of intelligent products and services that lower energy costs, reduce carbon and waste, and grow…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Inercoinerco.com HQ: Seville, SpainReported employees: 1,001-5,000 | Seville, Spain | 1,001-5,000 | Exact match | 755 contacts → |
“INERCO is a multinational technology company specialising in sustainability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | KBC A Yokogawa Companykbc.global HQ: Walton-on-thames, United KingdomReported employees: 201-500 | Walton-on-thames, United Kingdom | 201-500 | Exact match | 698 contacts → |
“We are passionate about driving sustainable change for our planet.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Watershedwatershed.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 589 contacts → |
“Watershed is the enterprise sustainability platform.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | ACT Groupbrnw.ch HQ: Amsterdam, NY, United StatesReported employees: 501-1,000 | Amsterdam, NY, United States | 501-1,000 | Exact match | 566 contacts → |
“Organizations come to ACT when a climate target, regulatory requirement, or emissions challenge needs a solution.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Dupont Water Solutionsdupont.com HQ: Wilmington, DE, United StatesReported employees: 10001+ | Wilmington, DE, United States | 10001+ | Exact match | 502 contacts → |
“We’re helping companies in every industry, in every corner of the globe make real progress.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | CRAMcram.fr HQ: Le Havre, FranceReported employees: 501-1,000 | Le Havre, France | 501-1,000 | Exact match | 494 contacts → |
“Nous sommes des femmes et des hommes engagés, qui chaque matin se lèvent avec une mission : être des acteurs clés de la transition énergétique.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Siemens Energy Productssiemens-energy.com HQ: United StatesReported employees: 10001+ | United States | 10001+ | Exact match | 490 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Westport Fuel Systemswestport.com HQ: Vancouver, BC, CanadaReported employees: 51-200 | Vancouver, BC, Canada | 51-200 | Exact match | 474 contacts → |
“Westport is a clean-tech innovation company, providing simplified solutions to decarbonize.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | STARKstark.co.uk HQ: Horley, United KingdomReported employees: 201-500 | Horley, United Kingdom | 201-500 | Exact match | 472 contacts → |
“Our mission: We’ve been on a mission to help identify energy waste, save costs and reduce carbon emissions for more than 40 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Chakr Innovationchakr.in HQ: Gurgaon, IndiaReported employees: 501-1,000 | Gurgaon, India | 501-1,000 | Exact match | 464 contacts → |
“Chakr Innovation is a pioneering Indian cleantech startup, founded by IIT Delhi graduates, dedicated to revolutionizing air quality with cutting-edge material science technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Photon Energy Groupphotonenergy.com HQ: Amsterdam, NetherlandsReported employees: 201-500 | Amsterdam, Netherlands | 201-500 | Exact match | 387 contacts → |
“Photon Energy Group is a group of companies with a shared mission: making clean energy, clean water and clean environments accessible to all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Greenflexgreenflex.com HQ: Paris, FranceReported employees: 501-1,000 | Paris, France | 501-1,000 | Exact match | 374 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Clean tech companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,180 records in the displayed employee bands.
20 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,200 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Clean tech companies by location
22 lists · largest firstEvery Clean tech companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Clean tech companies based in the United States377
- Clean tech companies based in India249
- Clean tech companies based in the United Kingdom180
- Clean tech companies based in Brazil156
- Clean tech companies based in Italy115
- Clean tech companies based in Canada110
- Clean tech companies based in France97
- Clean tech companies based in Spain96
- Clean tech companies based in Australia89
- Clean tech companies based in Germany79
- Clean tech companies based in Mexico75
- Clean tech companies based in Türkiye68
- Clean tech companies based in the Netherlands48
- Clean tech companies based in Chile40
- Clean tech companies based in the United Arab Emirates40
- Clean tech companies based in Poland33
- Clean tech companies based in Indonesia29
- Clean tech companies based in Portugal29
Cities
Questions about this company list
What does Exact match mean for clean tech companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many clean tech companies did RevenueBase find worldwide?
The saved snapshot records 3,200 matching company records, 150,531 tracked contacts and 47,068 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 clean tech companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/clean-tech-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗