Company lists · Data refreshed September 2026

Top 25 Climate tech accelerators worldwide

RevenueBase identified 910 company matches for climate tech accelerators worldwide as of September 2026 and tracks 25,428 professional contacts across them, including 2,690 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for climate tech accelerators 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 accelerators 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
910Companies
25,428Contacts tracked
2,690Verified emails
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The 25 largest climate tech accelerators worldwide

Ranked by team size
Top 25 of 910 company matches for climate tech accelerators 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLyon, FranceHQ recorded Sep 19, 2026n/a16,533 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
2Exact matchAarhus, DenmarkHQ recorded Sep 19, 20261,001-5,000451 contacts →

Exact match

“NRGi is an accelerator for the green transition in Denmark - and a better future.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchPune, IndiaHQ recorded Sep 19, 2026201-500429 contacts →

Exact match

“Ecozen develops climate-smart deeptech solutions and core technology stacks to deliver a sustainable future, including motor controls, IoT, and energy storage.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchItalyHQ recorded Sep 19, 2026501-1,000203 contacts →

Exact match

“NEXTCHEM is MAIRE’s company dedicated to Sustainable Technology Solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchBoston, MA, United StatesHQ recorded Sep 19, 202651-200149 contacts →

Exact match

“The Massachusetts Clean Energy Center is a state economic development agency dedicated to accelerating the growth of the clean energy and climatetech sector across the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchVancouver, BC, CanadaHQ recorded Sep 19, 202611-50143 contacts →

Exact match

“In the world we’re building, sustainability isn't a buzzword.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchBerkeley, CA, United StatesHQ recorded Sep 19, 202651-200136 contacts →

Exact match

“New Energy Nexus (NEX) is the world's leading ecosystem of funds and accelerators supporting diverse clean energy entrepreneurs to thrive, from emerging tech through to clean…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchLos Angeles, CA, United StatesHQ recorded Sep 19, 202611-50132 contacts →

Exact match

“The Cleantech Open runs the world's largest cleantech accelerator.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchCracow, PolandHQ recorded Sep 19, 202651-200102 contacts →

Exact match

“Amsterdam Standard is a green technology partner specializing in helping fast-growing climate tech scale-ups overcome technological scaling challenges and drive sustainable growth.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchSomerville, MA, United StatesHQ recorded Sep 19, 202651-20094 contacts →

Exact match

“Greentown Labs is a 501(c)(3) nonprofit accelerating climatetech innovation for the planet, people, and prosperity.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchNairobi, KenyaHQ recorded Sep 19, 202651-20092 contacts →

Exact match

“Kenya Climate Innovation Center (KCIC) provides holistic, country-driven support to accelerate the development, deployment and transfer of locally relevant climate and clean…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchMumbai, IndiaHQ recorded Sep 19, 202651-20085 contacts →

Exact match

“CircoLife | Cooling as a Subscription CircoLife is India's pioneering Cooling-as-a-Service (CaaS) company, providing IoT enabled Smart, 5-star energy-efficient air conditioning…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchJakarta, IndonesiaHQ recorded Sep 19, 202651-20081 contacts →

Exact match

“Accelerating Climate Actions With Technology”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Sep 19, 202611-5080 contacts →

Exact match

“Syzygy Plasmonics is a technology company decarbonizing chemical production with its proprietary light-driven reactor technology.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchMumbai, IndiaHQ recorded Sep 19, 202651-20080 contacts →

Exact match

“Climate Collective is the largest private climate tech startup support organization in South Asia focused on empowering startups by leveraging the resources, partnerships…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchSacramento, CA, United StatesHQ recorded Sep 19, 202651-20079 contacts →

Exact match

“Infinium is reimagining how the world powers, moves, and computes.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchBiałystok, PolandHQ recorded Sep 19, 2026201-50078 contacts →

Exact match

“Electrum is a Climate Tech and Renewable Energy leader, shaping a clean and resilient energy future.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchParis, FranceHQ recorded Sep 19, 202611-5071 contacts →

Exact match

“Marble partners with scientists, engineers and operators to create hard tech companies for the New Climate Era.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchHaymarket, AustraliaHQ recorded Sep 19, 2026n/a69 contacts →

Exact match

“EnergyLab is Australia’s leading incubator and accelerator for founders and startups launching and scaling clean energy and climate focused tech and business models.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchLyon, FranceHQ recorded Sep 19, 202611-5058 contacts →

Exact match

“Sun'Agri est une climate tech pionnière qui soigne la terre et ceux qui la cultivent.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchSomerville, MA, United StatesHQ recorded Sep 19, 202651-20058 contacts →

Exact match

“We work with entrepreneurs to refine ideas, attract talent, access capital, and accelerate growth.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchBrooklyn, United StatesHQ recorded Sep 19, 202611-5057 contacts →

Exact match

“Decarbonizing the World's Legacy Buildings Kelvin’s technology reduces wasted energy, saves money, and enables pinpoint temperature control for apartments in legacy buildings.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 19, 202611-5056 contacts →

Exact match

“Arc is a global non‑profit organisation that builds the shared pathways needed to turn climate and resilience ambitions into tangible investment flows.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchJakarta Selatan, IndonesiaHQ recorded Sep 19, 202611-5056 contacts →

Exact match

“Meet Fairatmos.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Sep 19, 202651-20054 contacts →

Exact match

“Sealed is a climate tech company on a mission to stop home energy waste by enabling contractors to install more home weatherization and electrification projects and grow their…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 910 climate tech accelerators worldwide

See the full list, filter by size, metro and specialty, and access 2,690 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Climate tech accelerators worldwide at a glance

As of Sep 19, 2026
10.6%Verified-email coverage
27.9Average contacts per company
1-10Median size (employees)
6.9%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
664
11-50
202
51-200
27
201-500
8
501-1,000
3
1,001-5,000
1
5,001-10,000
1
10001+
4

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 accelerators are linked below.
What qualifies
Company records worldwide whose business descriptions match “climate tech accelerators” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 2,690 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 accelerators by location

6 lists · largest first

Every Climate tech accelerators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 accelerators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate tech accelerators are there worldwide?

RevenueBase identified 910 company matches for climate tech accelerators 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?

Team For The Planet tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most climate tech accelerators?

The United States leads with 217 companies, followed by the United Kingdom (87) and India (66). Every climate tech accelerators list by country and city is linked on this page.

Which city has the most climate tech accelerators?

London leads with 63 company records, followed by New York (24) and Berlin (20).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,690 professional contacts with verified work emails tracked across these 910 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.

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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.