Company lists · Data verified August 2026

Top 18 Clean tech venture capital companies based in Houston, United States

Name: Clean tech venture capital companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 26 companies tracked

There are 26 clean tech venture capital companies headquartered in Houston, United States (RevenueBase, August 2026). RevenueBase tracks 257 professional contacts across them, including 120 with verified work emails and 78 with mobile numbers. New York is the largest hub.

This list covers clean tech venture capital companies headquartered in Houston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

26Companies

257Contacts tracked

120Verified emails

78Mobile numbers

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The 18 largest clean tech venture capital companies based in Houston, United States

Ranked by team size

Top 18 of 26 clean tech venture capital companies based in Houston, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Climate Investment CI	Houston, TX	51-200	61	36
2	Tokyo GAS America LTD	Houston, TX	11-50	50	31
3	GEC	Houston, TX	n/a	36	5
4	NEW Climate Ventures NCV	Houston, TX	1-10	16	6
5	Halliburton Labs	Houston, TX	1-10	16	6
6	547 Energy	Houston	1-10	13	4
7	Encap Energy Transition	Houston, TX	1-10	12	9
8	Tupper Lake Partners	Houston, TX	11-50	7	3
9	Ecosphere Ventures	Houston, TX	1-10	7	2
10	Beam Earth	Houston, TX	11-50	5	5
11	Climate Impact Capital	Houston, TX	11-50	4	2
12	Third Gear Investments	Houston, TX	1-10	3	3
13	Carnrite Ventures	Houston, TX	1-10	3	2
14	Veritec Capital Partners	Houston, TX	1-10	3	2
15	Noverram	Houston, TX	1-10	3	1
16	Dream BIG Ventures LLC	Houston, TX	1-10	2	1
17	Carbonexus LLC	Houston, TX	1-10	1	1
18	Veritec Ventures	Houston, TX	1-10	1	1

Showing 18 of 26 clean tech venture capital companies based in Houston, United States

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Clean tech venture capital companies based in Houston, United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 44 HQs

78Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Clean tech venture capital companies by metro in the United States

Metro	Companies
Clean tech venture capital companies in New York	44
Clean tech venture capital companies in San Francisco	44
Clean tech venture capital companies in Houston	26
Clean tech venture capital companies in Boston	20
Clean tech venture capital companies in Los Angeles	17
Clean tech venture capital companies in Chicago	15
Clean tech venture capital companies in Palo Alto	15
Clean tech venture capital companies in Washington	12

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clean tech venture capital companies”, with match quality audited by blind human judging, and headquartered in Houston, United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clean tech venture capital companies are there based in Houston, United States?

There are 26 clean tech venture capital companies headquartered in Houston, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Climate Investment CI, headquartered in Houston, tops this list with the largest team on record.

Which city has the most clean tech venture capital companies?

New York leads with 44 headquartered companies, followed by San Francisco (44) and Houston (26).

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 120 verified decision-maker contacts tracked across these 26 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.