Company lists · Data refreshed August 2026

Top 25 Clean energy venture capital companies based in the United States

RevenueBase identified 524 company matches for clean energy venture capital companies associated with the United States as of August 2026 and tracks 7,933 professional contacts across them, including 2,531 with verified work emails and 2,727 with mobile numbers. New York is the largest hub.

This list covers company matches for clean energy venture capital companies associated with the United States, 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 August 31, 2026.

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 Aug 31, 2026 How this list was built
524Companies
7,933Contacts tracked
2,531Verified emails
2,727Mobile numbers
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The 25 largest clean energy venture capital companies based in the United States

Ranked by team size
Top 25 of 524 company matches for clean energy venture capital companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Aug 31, 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 matchHouston, TX, United States1,001-5,0001,945 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 · Aug 31, 2026 · View company records in RevenueBase
2Exact matchCharlotte, NC, United States201-500533 contacts →

Exact match

“Palmetto is a leading clean tech company on a mission to accelerate the transition to a clean energy future.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
3Exact matchNew York, NY, United States51-200194 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
4Exact matchMenlo Park, CA, United States51-200190 contacts →

Exact match

“Khosla Ventures invests in companies that are bold, early and impactful.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United States51-200178 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
6Exact matchKirkland, United States51-200158 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
7Exact matchBerkeley, CA, United States51-200136 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 · Aug 31, 2026 · View company records in RevenueBase
8Exact matchSan Francisco, CA, United States51-200135 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 · Aug 31, 2026 · View company records in RevenueBase
9Exact matchThe Woodlands, TX, United States51-20091 contacts →

Exact match

“Renewable energy solutions that accelerate the energy transformation GreenGo Energy has worked since 2011 to accelerate the green transformation through a distinguished…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
10Exact matchLos Angeles, CA, United States51-20083 contacts →

Exact match

“Greycroft is a seed-to-growth venture capital firm that partners with entrepreneurs who are striving to build category-defining companies across intelligent consumer and…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
11Exact matchNew York, United States51-20072 contacts →

Exact match

“AMPYR Energy is a global developer and operator of renewable energy assets, developing, investing and operating solar, wind and battery assets across the globe.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United States1,001-5,00065 contacts →

Exact match

“Founded in 2003, ThomasLloyd is a vertically integrated sustainable energy and technology solutions provider, integrating development, investment, operations, and technology on a…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
13Exact matchHonolulu, HI, United States51-20062 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 · Aug 31, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United States51-20061 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 · Aug 31, 2026 · View company records in RevenueBase
15Exact matchLa Jolla, CA, United States51-20055 contacts →

Exact match

“We want to facilitate the transition from fossil fuels to clean, renewable energy.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United States11-5050 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
17Exact matchCambridge, MA, United States11-5046 contacts →

Exact match

“Sunwealth’s mission is to invest in the future of energy, generating financial, social and environmental returns for investors and communities.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
18Exact matchLos Altos, CA, United States11-5040 contacts →

Exact match

“Based in the San Francisco Bay Area, Toyota Ventures is Toyota’s early-stage venture capital firm with over $800 million in assets under management and a portfolio of 100+…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
19Exact matchStamford, CT, United States11-5036 contacts →

Exact match

“We are a private investment firm dedicated exclusively to building businesses that help transform the world’s energy infrastructure.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
20Exact matchDurham, NC, United States11-5034 contacts →

Exact match

“SJF Ventures invests in high-growth companies creating a healthier, smarter and cleaner future.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
21Exact matchMenlo Park, CA, United States11-5033 contacts →

Exact match

“The Westly Group is one of the largest venture funds in North America focused on the digitization and sustainability of the energy, mobility, building, and industrial sectors…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
22Exact matchSpotsylvania, VA, United States201-50032 contacts →

Exact match

“The AES Corporation finalized an agreement with Alberta Investment Management Corporation (AIMCo) that merged the sPower development platform, a leading independent solar…”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
23Exact matchMinnetonka, MN, United States11-5028 contacts →

Exact match

“Our core business focuses on originating, acquiring and developing renewable energy projects throughout the US.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
24Exact matchWhite Plains, NY, United States201-50025 contacts →

Exact match

“Founded in 1993, Fortistar is a privately owned investment firm focused on accelerating the transition to a lower carbon future.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase
25Exact matchMenlo Park, CA, United States51-20024 contacts →

Exact match

“SE Ventures is a $1B+ venture capital firm based in Menlo Park.”

Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase

Showing 25 of 524 clean energy venture capital companies based in the United States

See the full list, filter by size, metro and specialty, and access 2,531 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clean energy venture capital companies based in the United States at a glance

As of Aug 31, 2026
31.9%Verified-email coverage
34.4%Mobile-number coverage
15.1Average contacts per company
1-10Median size (employees)
10.9%Largest-city concentration · New York
Aug 31, 2026Page data refreshed

Companies by employee count

1-10
342
11-50
144
51-200
25
201-500
6
501-1,000
3
1,001-5,000
2

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.
What qualifies
Company records associated with the United States whose business descriptions match “clean energy venture capital companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 2,531 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 August 31, 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.

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 “clean energy venture capital companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clean energy venture capital companies are there based in the United States?

RevenueBase identified 524 company matches for clean energy venture capital companies associated with the United States as of August 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?

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

Which city has the most clean energy venture capital companies?

New York leads with 57 company records, followed by San Francisco (39) and Houston (38).

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 2,531 professional contacts with verified work emails tracked across these 524 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 August 31, 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.