Company lists · Data refreshed September 2026

Top 25 Renewable energy investment firms based in Houston, United States

Name: Renewable energy investment firms based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 59 companies tracked

RevenueBase identified 59 renewable energy investment firms headquartered in Houston, United States as of September 2026 and tracks 1,224 professional contacts across them, including 478 with verified work emails. New York is the largest hub.

This list covers renewable energy investment firms headquartered in Houston, United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

59Companies

1,224Contacts tracked

478Verified emails

Explore all 59 companies → Free signup · no credit card · 500 free credits

The 25 largest renewable energy investment firms based in Houston, United States

Ranked by team size

Top 25 of 59 renewable energy investment firms based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy investment firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	EDP Renewables North AmericaStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	425
	“EDP Renewables North America LLC (EDPR NA), its affiliates, and its subsidiaries develop, construct, own, and operate wind farms, solar parks, and energy storage systems…” Source: company website · checked Sep 5, 2026
2	Quantum Capital GroupPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	173
	“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: company website · checked Sep 5, 2026
3	CatalyzeStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	156
	“Founded in 2017, Catalyze is a fully integrated developer and Independent Power Producer (IPP) of distributed renewable energy assets.” Source: company website · checked Sep 5, 2026
4	Tokyo GAS America LTDIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	52
	Source: company website · checked Sep 5, 2026
5	GECPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	n/a	37
	“GEC invests in innovative energy technology and software companies.” Source: company website · checked Sep 5, 2026
6	RenewaStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	36
	“Renewa is a renewables company focused on acquisitions and investments within the solar, wind and renewable energy industries.” Source: company website · checked Sep 5, 2026
7	Chariot EnergyPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	33
	“Chariot Energy is a retail electricity provider and energy solutions company serving residential, commercial, and industrial customers across competitive U.S.” Source: company website · checked Sep 5, 2026
8	Sunshine Renewable SolutionsPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	21
	“Texas' first NABCEP Accredited PV Installation Company • NABCEP Certified PV Installation Professional # PV-102117-017952 Sunshine Renewable Solutions was established to address…” Source: company website · checked Sep 5, 2026
9	WattbridgePartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	14
	“WattBridge Energy is a Houston, Texas-based global independent power producer.” Source: company website · checked Sep 5, 2026
10	547 EnergyIndirect evidence	Houston, United StatesHQ checked Sep 5, 2026	1-10	13
	Source: company website · checked Sep 5, 2026
11	Encap Energy TransitionStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	12
	“EnCap is pursuing investment opportunities created by the global transition to a lower-carbon energy system.” Source: company website · checked Sep 5, 2026
12	Connectgen LLCStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	11
	“CONNECTING POWER, PROJECTS & PEOPLE ConnectGEN is developing renewable energy and energy storage projects across North America.” Source: company website · checked Sep 5, 2026
13	KNS SolarPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	10
	“Headquartered in Houston, TX right inside the Energy Corridor, KNS Solar, LLC, is a strategic international energy and project development corporation, with a combined experience…” Source: company website · checked Sep 5, 2026
14	DevaltecPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	9
	“We help companies and their investors succeed in the Energy Transition We offer integrated support in Consulting and Project Development in Sustainable Energy” Source: company website · checked Sep 5, 2026
15	Tupper Lake PartnersStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	8
	“Tupper Lake Partners is a Venture Capital and Investment Management firm formed in 2020 comprised of former energy & technology CEOs that bring their experience (and personal…” Source: company website · checked Sep 5, 2026
16	AlmikaPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	6
	“Almika is set on disrupting how electricity is produced and consumed in today’s energy markets.” Source: company website · checked Sep 5, 2026
17	Beam EarthStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	5
	“A clean technology-centric ecosystem, Beam Earth provides funding for environmentally-aligned businesses and services across the investment themes of clean energy, sustainability…” Source: company website · checked Sep 5, 2026
18	Merit SIPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	5
	“Merit SI is a sustainable infrastructure company that develops, designs, builds and operates industrial-grade solar photovoltaic power plants, energy storage solutions, and…” Source: company website · checked Sep 5, 2026
19	Haddington VenturesStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	4
	“Founded in 1998, Haddington Ventures oversees a growing portfolio of successful conventional and renewable energy businesses that are bringing innovative new infrastructure to the…” Source: company website · checked Sep 5, 2026
20	Akari Energy LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	4
	“Solar power development” Source: company website · checked Sep 5, 2026
21	Third Gear InvestmentsPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	3
	“The ambition to reduce energy poverty and achieve net zero has created a global tailwind in energy.” Source: company website · checked Sep 5, 2026
22	Movement IndustriesStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	3
	“Movement Industries Corporation invests in emerging growth companies in energy, oil & gas, renewables, agricultural and industrial manufacturing sectors.” Source: company website · checked Sep 5, 2026
23	Veritec Capital PartnersPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	3
	“Veritec Capital Partners is a private capital firm investing in de-risked, deployment-ready energy efficiency-enhancing and decarbonization technologies.” Source: company website · checked Sep 5, 2026
24	SCI Global INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	2
	Source: company website · checked Sep 5, 2026
25	Energy & Industrial Advisory PartnersStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	2
	“Energy & Industrial Advisory Partners is a boutique investment banking, capital raising (Stealth & Seed through Series A and beyond), and M&A advisory firm, focused on the energy…” Source: company website · checked Sep 5, 2026

Showing 25 of 59 renewable energy investment firms based in Houston, United States

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Renewable energy investment firms based in Houston, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 111 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 59 companies.

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 renewable energy investment firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Houston, United States whose own description of what they do matches “renewable energy investment firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among renewable energy investment firms, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
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 an evidence 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, 478 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 5, 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.

Renewable energy investment firms by metro in the United States

Renewable energy investment firms in New York111
Renewable energy investment firms in Houston59
Renewable energy investment firms in San Francisco36
Renewable energy investment firms in Dallas35
Renewable energy investment firms in Boston30
Renewable energy investment firms in Chicago30

Frequently asked

How many renewable energy investment firms are there based in Houston, United States?

RevenueBase identified 59 renewable energy investment firms headquartered in Houston, United States 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?

EDP Renewables North America, headquartered in Houston, tops this list with the largest team on record.

Which city has the most renewable energy investment firms?

New York leads with 111 headquartered companies, followed by Houston (59) and San Francisco (36).

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 478 verified decision-maker contacts tracked across these 59 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 5, 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.