Company lists · Data refreshed September 2026

Top 25 Climate tech startups worldwide

Name: Climate tech startups worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,403 companies tracked

RevenueBase identified 4,403 company matches for climate tech startups worldwide as of September 2026 and tracks 199,420 professional contacts across them, including 60,266 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for climate tech startups 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 September 19, 2026. Country and city lists for climate tech startups 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 Sep 19, 2026 How this list was built

4,403Companies

199,420Contacts tracked

60,266Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest climate tech startups worldwide

Ranked by team size

Top 25 of 4,403 company matches for climate tech startups worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Exxonmobil	Exact match	Spring, United StatesHQ recorded Sep 19, 2026	n/a	54,082 contacts →
	Exact match “The need for energy is universal.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Team For The Planet	Exact match	Lyon, FranceHQ recorded Sep 19, 2026	n/a	16,533 contacts →
	Exact match “Entrepreneurship in the service of the climate emergency!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Trane Technologies	Exact match	Davidson, NC, United StatesHQ recorded Sep 19, 2026	10001+	12,878 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 · Sep 19, 2026 · View company records in RevenueBase
4	Subsea7	Exact match	London, United KingdomHQ recorded Sep 19, 2026	10001+	12,645 contacts →
	Exact match “Subsea7 makes offshore energy transition possible through the continuous evolution of lower-carbon oil and gas and by enabling the growth of renewables and emerging energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Carrier Hvac	Exact match	United StatesHQ recorded Sep 19, 2026	10001+	10,099 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 · Sep 19, 2026 · View company records in RevenueBase
6	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Sep 19, 2026	10001+	8,427 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Johnson Matthey	Exact match	London, ItalyHQ recorded Sep 19, 2026	5,001-10,000	8,053 contacts →
	Exact match “Johnson Matthey (JM) is a world leader in platinum group metals (PGMs).” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	RENEW	Exact match	Gurugram, IndiaHQ recorded Sep 19, 2026	1,001-5,000	4,340 contacts →
	Exact match “ReNew is a leading decarbonisation solutions provider and the first Indian clean energy company to list on Nasdaq (Nasdaq: RNW).” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Topsoe	Exact match	Kongens Lyngby, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,616 contacts →
	Exact match “Topsoe is a leading global provider of technology and solutions for the energy transition.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Mckinstry	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,213 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 · Sep 19, 2026 · View company records in RevenueBase
11	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,121 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 · Sep 19, 2026 · View company records in RevenueBase
12	Envision Energy	Exact match	Huangpu District, ChinaHQ recorded Sep 19, 2026	1,001-5,000	1,961 contacts →
	Exact match “Envision Energy is a world-leading green technology company that provides renewable energy solutions for global enterprises, governments, and institutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,383 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	California Resources Corporation	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,095 contacts →
	Exact match “California Resources Corporation (CRC) is an independent energy and carbon management company committed to energy transition.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Gruppo AB	Exact match	Orzinuovi, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	1,081 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 · Sep 19, 2026 · View company records in RevenueBase
16	Anthesis Group	Exact match	London, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	894 contacts →
	Exact match “Anthesis guides clients to sustainable performance.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	South Pole	Exact match	Zurich, SwitzerlandHQ recorded Sep 19, 2026	501-1,000	811 contacts →
	Exact match “South Pole is the world's leading carbon asset developer and climate consultancy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Energy Solutions	Exact match	Oakland, CA, United StatesHQ recorded Sep 19, 2026	201-500	772 contacts →
	Exact match “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Resource Innovations	Exact match	Half Moon Bay, CA, United StatesHQ recorded Sep 19, 2026	501-1,000	733 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	KBC A Yokogawa Company	Exact match	Walton-on-thames, United KingdomHQ recorded Sep 19, 2026	201-500	658 contacts →
	Exact match “We are passionate about driving sustainable change for our planet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	ACT Group	Exact match	Amsterdam, NetherlandsHQ recorded Sep 19, 2026	501-1,000	556 contacts →
	Exact match “As the leading environmental solutions partner for organizations globally, ACT helps its partners meet increasing environmental action and disclosure expectations from regulators…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	GTI Energy	Exact match	Des Plaines, IL, United StatesHQ recorded Sep 19, 2026	201-500	513 contacts →
	Exact match “For more than eight decades, GTI Energy has contributed to the strengthening of energy systems and the communities they serve.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	STX Group	Exact match	Amsterdam, NetherlandsHQ recorded Sep 19, 2026	501-1,000	502 contacts →
	Exact match “STX Group is a leading global firm in environmental commodities trading and climate finance.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Altus Intervention	Exact match	Stavanger, NorwayHQ recorded Sep 19, 2026	1,001-5,000	485 contacts →
	Exact match “In 2023 Baker Hughes completed the acquisition of Altus Intervention.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Chakr Innovation	Exact match	Gurugram, IndiaHQ recorded Sep 19, 2026	501-1,000	476 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 · Sep 19, 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 “climate tech startups”. 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 4,403 climate tech startups worldwide

See the full list, filter by size, metro and specialty, and access 60,266 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Climate tech startups worldwide at a glance

As of Sep 19, 2026

30.2%Verified-email coverage

45.3Average contacts per company

1-10Median size (employees)

3.9%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

2,643

11-50

1,315

51-200

305

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

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 climate tech startups are linked below.
What qualifies: Company records worldwide whose business descriptions match “climate tech startups” 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 60,266 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 September 19, 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.

Climate tech startups by location

28 lists · largest first

Every Climate tech startups 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 “climate tech startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate tech startups are there worldwide?

RevenueBase identified 4,403 company matches for climate tech startups worldwide as of September 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?

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

Which country has the most climate tech startups?

The United States leads with 745 companies, followed by India (350) and the United Kingdom (347). Every climate tech startups list by country and city is linked on this page.

Which city has the most climate tech startups?

London leads with 171 company records, followed by Singapore (60) and New York (51).

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 60,266 professional contacts with verified work emails tracked across these 4,403 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 September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,403 climate tech startups worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.