Company lists · Data refreshed September 2026

Top 25 Venture capital cleantech firms worldwide

RevenueBase identified 1,641 company matches for venture capital cleantech firms worldwide as of September 2026 and tracks 14,399 professional contacts across them, including 4,839 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for venture capital cleantech firms 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 29, 2026. Country and city lists for venture capital cleantech firms 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 29, 2026 How this list was built
1,641Companies
14,399Contacts tracked
4,839Verified emails
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The 25 largest venture capital cleantech firms worldwide

Ranked by team size
Top 25 of 1,641 company matches for venture capital cleantech firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchMiami, FL, United StatesHQ recorded Sep 29, 2026201-500428 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchAnnapolis, MD, United StatesHQ recorded Sep 29, 202651-200196 contacts →

Exact match

“HASI invests in sustainable infrastructure assets advancing the energy transition.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchNova Marilândia, BrazilHQ recorded Sep 29, 2026201-500187 contacts →

Exact match

“Nosso propósito é impulsionar a transformação em direção a um futuro renovável e sustentável, trabalhando incansavelmente para desenvolver soluções inovadoras que contribuam para…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchUnited StatesHQ recorded Sep 29, 2026201-500186 contacts →

Exact match

“Enerjide kendi kendine yeten bir dünya için temiz enerji üretiyoruz, sürdürülebilirlik ilkeleri ve kalkınma amaçları doğrultusunda, sürekli gelişim odaklı çalışarak, etki…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchAmsterdam, NetherlandsHQ recorded Sep 29, 2026n/a175 contacts →

Exact match

“Rockstart is an early stage investor that empowers purpose-driven founders across three domains: Energy, AgriFood, and Emerging Technologies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchKirkland, United StatesHQ recorded Sep 29, 202651-200159 contacts →

Exact match

“Breakthrough Energy backs companies developing the next generation of clean energy solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchBonn, GermanyHQ recorded Sep 29, 202651-200154 contacts →

Exact match

“HTGF is one of the leading and most active VC investors in Germany and Europe, financing start-ups in the fields of Deep Tech, Industrial Tech, Climate Tech, Digital Tech, Life…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500153 contacts →

Exact match

“At Octopus Energy Generation, we’re building green power for the future, from large-scale solar to onshore and offshore wind, and innovative initiatives like the Fan Club.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchMadrid, SpainHQ recorded Sep 29, 202651-200147 contacts →

Exact match

“Matrix Renewables is a global renewable energy platform created and backed by global alternative asset manager TPG and its $31 billion impact-investing platform.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchNew York, United StatesHQ recorded Sep 29, 202651-200141 contacts →

Exact match

“Energy Impact Partners LP (EIP) is a global energy technology investor with a proprietary model designed to drive innovation.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchLos Angeles, CA, United StatesHQ recorded Sep 29, 202611-50132 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchLima, PeruHQ recorded Sep 29, 2026501-1,000109 contacts →

Exact match

“Somos una gestora de portafolio dedicada a potenciar soluciones energéticas innovadoras y sostenibles para desarrollar cada casa, empresa, ciudad y país.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchStockholm, SwedenHQ recorded Sep 29, 202651-200106 contacts →

Exact match

“Founded in 2016, Summa Equity is an investment firm focusing on the thematic areas of Circularity, Energy Transition, Sustainable Food, and Tech-Enabled Resilience.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchParis, FranceHQ recorded Sep 29, 202651-20095 contacts →

Exact match

“Omnes is a leading European private equity firm dedicated to the energy transition.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchWollerau, SwitzerlandHQ recorded Sep 29, 2026201-50094 contacts →

Exact match

“We are a Swiss-based investment company.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchZurich, SwitzerlandHQ recorded Sep 29, 202651-20074 contacts →

Exact match

“Why we are unique: Emerald brings open innovation and venture capital together in unparalleled fashion, with 25+ years of experience in investing in the sustainable industrial…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchDublin, IrelandHQ recorded Sep 29, 2026n/a71 contacts →

Exact match

“Where does your Vision take us?”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Sep 29, 202651-20063 contacts →

Exact match

“Anzu Partners is a venture capital and private equity firm that invests in breakthrough industrial technologies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-20062 contacts →

Exact match

“Climate Investment is a US and UK-based independently managed specialist investor focused on accelerating capital-efficient decarbonization of heavy emitting sectors.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchHonolulu, HI, United StatesHQ recorded Sep 29, 202651-20062 contacts →

Exact match

“Elemental Impact is a nonprofit investing platform with 15 years of experience advancing innovative technology that creates lasting economic and climate benefits across…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchMadrid, SpainHQ recorded Sep 29, 202651-20060 contacts →

Exact match

“Helping investors and energy companies maximise renewable asset performance while keeping risk under control.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchBristol, United KingdomHQ recorded Sep 29, 202611-5058 contacts →

Exact match

“Aura Power is a renewable energy investor, developer and adviser.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchKatowice, PolandHQ recorded Sep 29, 202611-5058 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchSan Jose, CA, United StatesHQ recorded Sep 29, 202611-5056 contacts →

Exact match

“TDK Ventures is a global, founder-first corporate venture capital firm with $500M under management across four funds.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchBoston, MA, United StatesHQ recorded Sep 29, 202611-5054 contacts →

Exact match

“Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,641 venture capital cleantech firms worldwide

See the full list, filter by size, metro and specialty, and access 4,839 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Venture capital cleantech firms worldwide at a glance

As of Sep 29, 2026
33.6%Verified-email coverage
8.8Average contacts per company
1-10Median size (employees)
4.9%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
1,111
11-50
404
51-200
77
201-500
29
501-1,000
11
1,001-5,000
2
10001+
2

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 venture capital cleantech firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “venture capital cleantech firms” 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 4,839 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 29, 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.

Venture capital cleantech firms by location

16 lists · largest first

Every Venture capital cleantech firms 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 “venture capital cleantech firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many venture capital cleantech firms are there worldwide?

RevenueBase identified 1,641 company matches for venture capital cleantech firms 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?

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

Which country has the most venture capital cleantech firms?

The United States leads with 421 companies, followed by the United Kingdom (119) and Germany (82). Every venture capital cleantech firms list by country and city is linked on this page.

Which city has the most venture capital cleantech firms?

London leads with 81 company records, followed by New York (51) and San Francisco (41).

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 4,839 professional contacts with verified work emails tracked across these 1,641 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 29, 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.