Company lists · Data refreshed September 2026
Top 25 Venture capital cleantech firms worldwide
RevenueBase identified 1,641 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 venture capital cleantech firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 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 Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest venture capital cleantech firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 428 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 196 contacts → | ||||
Indirect evidence “HASI invests in sustainable infrastructure assets advancing the energy transition.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 187 contacts → | ||||
Indirect evidence “Nosso propósito é impulsionar a transformação em direção a um futuro renovável e sustentável, trabalhando incansavelmente para desenvolver soluções inovadoras que contribuam para…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 186 contacts → | ||||
Indirect evidence “Enerjide kendi kendine yeten bir dünya için temiz enerji üretiyoruz, sürdürülebilirlik ilkeleri ve kalkınma amaçları doğrultusunda, sürekli gelişim odaklı çalışarak, etki…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 175 contacts → | ||||
Indirect evidence “Rockstart is an early stage investor that empowers purpose-driven founders across three domains: Energy, AgriFood, and Emerging Technologies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 159 contacts → | ||||
Indirect evidence “Breakthrough Energy backs companies developing the next generation of clean energy solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 154 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 153 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 147 contacts → | ||||
Indirect evidence “Matrix Renewables is a global renewable energy platform created and backed by global alternative asset manager TPG and its $31 billion impact-investing platform.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 141 contacts → | ||||
Indirect evidence “Energy Impact Partners LP (EIP) is a global energy technology investor with a proprietary model designed to drive innovation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 132 contacts → | ||||
Partial evidence “The Cleantech Open runs the world's largest cleantech accelerator.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 109 contacts → | ||||
Indirect evidence “Somos una gestora de portafolio dedicada a potenciar soluciones energéticas innovadoras y sostenibles para desarrollar cada casa, empresa, ciudad y país.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 106 contacts → | ||||
Indirect evidence “Founded in 2016, Summa Equity is an investment firm focusing on the thematic areas of Circularity, Energy Transition, Sustainable Food, and Tech-Enabled Resilience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 95 contacts → | ||||
Indirect evidence “Omnes is a leading European private equity firm dedicated to the energy transition.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 94 contacts → | ||||
Indirect evidence “We are a Swiss-based investment company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 74 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 71 contacts → | ||||
Indirect evidence “Where does your Vision take us?” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 63 contacts → | ||||
Strong evidence “Anzu Partners is a venture capital and private equity firm that invests in breakthrough industrial technologies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 62 contacts → | ||||
Partial evidence “Climate Investment is a US and UK-based independently managed specialist investor focused on accelerating capital-efficient decarbonization of heavy emitting sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 62 contacts → | ||||
Indirect evidence “Elemental Impact is a nonprofit investing platform with 15 years of experience advancing innovative technology that creates lasting economic and climate benefits across…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 60 contacts → | ||||
Indirect evidence “Helping investors and energy companies maximise renewable asset performance while keeping risk under control.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 58 contacts → | ||||
Indirect evidence “Aura Power is a renewable energy investor, developer and adviser.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 58 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 56 contacts → | ||||
Strong evidence “TDK Ventures is a global, founder-first corporate venture capital firm with $500M under management across four funds.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 54 contacts → | ||||
Strong evidence “Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: venture capital cleantech firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names venture capital cleantech firms.
- Partial evidence
- Its own public description names part of venture capital cleantech firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name venture capital cleantech firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,641 venture capital cleantech firms worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,839 reachable decision-makers.
Free signup · no credit card
Venture capital cleantech firms worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among venture capital cleantech firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for venture capital cleantech firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “venture capital cleantech firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names venture capital cleantech firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among venture capital cleantech firms, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 4,839 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Venture capital cleantech firms by location
16 lists · largest firstEvery 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
- Venture capital cleantech firms based in the United States421
- Venture capital cleantech firms based in the United Kingdom119
- Venture capital cleantech firms based in Germany82
- Venture capital cleantech firms based in the Netherlands50
- Venture capital cleantech firms based in Canada49
- Venture capital cleantech firms based in India45
- Venture capital cleantech firms based in Australia41
- Venture capital cleantech firms based in France38
- Venture capital cleantech firms based in Switzerland29
- Venture capital cleantech firms based in Spain28
- Venture capital cleantech firms based in Norway27
Cities
- Venture capital cleantech firms based in London, United Kingdom81
- Venture capital cleantech firms based in New York, United States51
- Venture capital cleantech firms based in San Francisco, United States41
- Venture capital cleantech firms based in Houston, United States27
- Venture capital cleantech firms based in Paris, France26
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names venture capital cleantech firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many venture capital cleantech firms are there worldwide?
RevenueBase identified 1,641 venture capital cleantech firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Enfinity Global, headquartered in Miami, tops this list with the largest team on record.
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 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 4,839 verified decision-maker contacts tracked across these 1,641 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,641 venture capital cleantech firms 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 Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.