Company lists · Data refreshed September 2026
Top 25 Climate tech venture capital firms worldwide
RevenueBase identified 2,473 climate tech venture capital firms worldwide as of September 2026 and tracks 20,638 professional contacts across them, including 7,186 with verified work emails. The United States is the largest market and London the largest hub.
This list covers climate tech venture capital 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 27, 2026. Country and city lists for climate tech venture capital 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 climate tech venture capital firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 285 contacts → | ||||
Indirect evidence “We are building a full stack energy company to lower cost of energy & accelerate energy abundance.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 258 contacts → | ||||
Partial evidence “For the past decade, Agriculture Capital has invested in and established sustainable food infrastructure that delivers better food, improves the ecosystem health of our planet…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 213 contacts → | ||||
Strong evidence “Varaha is a leading global climate tech startup that specializes in nature-based solutions, including regenerative agriculture, agroforestry, and biochar projects that promote…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 201 contacts → | ||||
Partial evidence “Aramco Ventures is the corporate venturing arm of Aramco, the world’s leading integrated energy company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 193 contacts → | ||||
Partial evidence “Khosla Ventures invests in companies that are bold, early and impactful.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 173 contacts → | ||||
Strong evidence “Founded in 1998, Quantum Capital Group is a leading provider of private equity, credit, and venture capital to the global energy and energy transition industry, having managed…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 169 contacts → | ||||
Strong evidence “ff Venture Capital (ffVC) is focused on investing in early-stage technology and technology-enabled companies, and has been since 2008.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 168 contacts → | ||||
Partial evidence “The CEFC is Australia’s specialist climate investor, helping cut emissions in the race towards net zero by 2050.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 159 contacts → | ||||
Indirect evidence “Breakthrough Energy backs companies developing the next generation of clean energy solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 154 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 130 contacts → | ||||
Partial evidence “Climate Fund Managers is a climate-focused blended finance investment manager operating in emerging markets across Africa, Asia, and Latin America.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 119 contacts → | ||||
Strong evidence “SOSV is the most active deep tech venture capital firm globally, investing at pre-seed (or at startup inception) supporting visionary founders intent on making a profound impact…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 106 contacts → | ||||
Partial 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 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 105 contacts → | ||||
Indirect evidence “DCVC and its principals have backed brilliant people changing global-scale industries for over twenty years, helping create tens of billions of dollars of wealth for founders…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 102 contacts → | ||||
Strong evidence “Amsterdam Standard is a green technology partner specializing in helping fast-growing climate tech scale-ups overcome technological scaling challenges and drive sustainable growth.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 100 contacts → | ||||
Strong evidence “WI Harper Group is a pioneering venture capital firm with over three decades of experience investing in transformative companies that shape the future.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 95 contacts → | ||||
Indirect evidence “Omnes is a leading European private equity firm dedicated to the energy transition.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 94 contacts → | ||||
Partial evidence “Greentown Labs is a 501(c)(3) nonprofit accelerating climatetech innovation for the planet, people, and prosperity.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 86 contacts → | ||||
Partial evidence “Builders Vision is an investment and philanthropy platform that harnesses innovative capital to build a more resilient future.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 84 contacts → | ||||
Partial evidence “Founded on the core principle that the next wave of tech is born in the startup streets - the natural environment of tomorrow’s innovation superstars - Ventech has been a pioneer…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 81 contacts → | ||||
Partial evidence “Accelerating Climate Actions With Technology” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 81 contacts → | ||||
Strong evidence “SemperVirens is a San Francisco based venture capital firm investing in AI-native companies transforming the largest and most complex service markets in the economy: healthcare…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 80 contacts → | ||||
Indirect evidence “Syzygy Plasmonics is a technology company decarbonizing chemical production with its proprietary light-driven reactor technology.” Source: RevenueBase Database · checked Sep 27, 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: climate tech venture capital 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 climate tech venture capital firms.
- Partial evidence
- Its own public description names part of climate tech venture capital firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name climate tech venture capital 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 2,473 climate tech venture capital firms worldwide
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Climate tech venture capital firms worldwide at a glance
As of Sep 27, 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 climate tech venture capital 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 climate tech venture capital firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “climate tech venture capital 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 climate tech venture capital 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 climate tech venture capital 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, 7,186 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 27, 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.
Climate tech venture capital firms by location
17 lists · largest firstEvery Climate tech venture capital firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Climate tech venture capital firms based in the United States706
- Climate tech venture capital firms based in the United Kingdom180
- Climate tech venture capital firms based in Germany115
- Climate tech venture capital firms based in India110
- Climate tech venture capital firms based in the Netherlands72
- Climate tech venture capital firms based in France60
- Climate tech venture capital firms based in Canada56
- Climate tech venture capital firms based in Australia55
- Climate tech venture capital firms based in Switzerland45
- Climate tech venture capital firms based in Israel37
- Climate tech venture capital firms based in the United Arab Emirates36
- Climate tech venture capital firms based in Sweden26
Cities
- Climate tech venture capital firms based in San Francisco, United States96
- Climate tech venture capital firms based in New York, United States77
- Climate tech venture capital firms based in Houston, United States34
- Climate tech venture capital firms based in Los Angeles, United States33
- Climate tech venture capital firms based in Boston, United States25
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 climate tech venture capital 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 climate tech venture capital firms are there worldwide?
RevenueBase identified 2,473 climate tech venture capital 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?
Fuse Energy, headquartered in Houston, tops this list with the largest team on record.
Which country has the most climate tech venture capital firms?
The United States leads with 706 companies, followed by the United Kingdom (180) and Germany (115). Every climate tech venture capital firms list by country and city is linked on this page.
Which city has the most climate tech venture capital firms?
London leads with 135 headquartered companies, followed by San Francisco (96) and New York (77).
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 7,186 verified decision-maker contacts tracked across these 2,473 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 27, 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 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.