Company lists · Data refreshed September 2026

Top 25 Renewable energy tech companies based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 79 companies tracked

RevenueBase identified 79 renewable energy tech companies headquartered in Houston, United States as of September 2026 and tracks 3,074 professional contacts across them, including 663 with verified work emails. New York is the largest hub.

This list covers renewable energy tech 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

79Companies

3,074Contacts tracked

663Verified emails

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The 25 largest renewable energy tech companies based in Houston, United States

Ranked by team size

Top 25 of 79 renewable energy tech companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy tech companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sunnova Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	906 contacts →
	Partial evidence “Sunnova Energy International Inc.(NYSE: NOVA) is an industry-leading energy services company focused on making clean energy more accessible, reliable, and affordable for…” Source: RevenueBase Database · checked Sep 17, 2026
2	EDP Renewables North America	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	425 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 17, 2026
3	Trismart Solar	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	167 contacts →
	Partial evidence “Our mission is to help people achieve energy independence quickly, easily, and affordably using the power of the sun and teamwork.” Source: RevenueBase Database · checked Sep 17, 2026
4	Catalyze	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	156 contacts →
	Strong evidence “Founded in 2017, Catalyze is a fully integrated developer and Independent Power Producer (IPP) of distributed renewable energy assets.” Source: RevenueBase Database · checked Sep 17, 2026
5	Tokyo GAS America LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	52 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
6	Fastrac Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Partial evidence “At FASTRAC Energy Services, we specialize in providing comprehensive solar energy solutions that help homeowners and businesses save on energy costs while contributing to a their…” Source: RevenueBase Database · checked Sep 17, 2026
7	Radial Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	42 contacts →
	Indirect evidence “Radial Power is a national developer, owner, and operator of distributed solar and storage projects serving commercial, industrial, and community solar customers across the United…” Source: RevenueBase Database · checked Sep 17, 2026
8	Integratesun	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	38 contacts →
	Partial evidence “We are a Texas based residential and commercial solar development company that offers solar energy systems in TX, CA,GA, OK, AZ, NV, DC, MD & PA.” Source: RevenueBase Database · checked Sep 17, 2026
9	GEC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	37 contacts →
	Partial evidence “GEC invests in innovative energy technology and software companies.” Source: RevenueBase Database · checked Sep 17, 2026
10	Renewa	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	36 contacts →
	Strong evidence “Renewa is a renewables company focused on acquisitions and investments within the solar, wind and renewable energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
11	Chariot Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	33 contacts →
	Partial evidence “Chariot Energy is a retail electricity provider and energy solutions company serving residential, commercial, and industrial customers across competitive U.S.” Source: RevenueBase Database · checked Sep 17, 2026
12	Total Energy Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	33 contacts →
	Partial evidence “Total Energy Systems (TES) is a leading provider of integrated power generation solutions with market leading equipment, engineering and support guaranteeing dependable and…” Source: RevenueBase Database · checked Sep 17, 2026
13	Alpha Omega Power LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	32 contacts →
	Strong evidence “Alpha Omega Power (“AOP”) is a utility-scale renewable energy developer, owner, and operator with a focus on grid scale battery storage.” Source: RevenueBase Database · checked Sep 17, 2026
14	Bioeco Energy	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	24 contacts →
	Strong evidence “Bioeco Energy’s alternative energy solutions capture the renewable power of the sun, fueling new possibilities for your business and home.” Source: RevenueBase Database · checked Sep 17, 2026
15	Sunshine Renewable Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	21 contacts →
	Partial evidence “Texas' first NABCEP Accredited PV Installation Company • NABCEP Certified PV Installation Professional # PV-102117-017952 Sunshine Renewable Solutions was established to address…” Source: RevenueBase Database · checked Sep 17, 2026
16	Wattbridge	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	14 contacts →
	Partial evidence “WattBridge Energy is a Houston, Texas-based global independent power producer.” Source: RevenueBase Database · checked Sep 17, 2026
17	Verde Clean Fuels	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Verde is a clean fuels company deploying its innovative and proprietary liquid fuels processing technology through commercial production plants.” Source: RevenueBase Database · checked Sep 17, 2026
18	ICE Thermal Harvesting	Indirect evidence	Houston, United StatesHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “ICE Thermal Harvesting is based in Houston, TX and focuses on supplying zero-emission power in various regions around the world.” Source: RevenueBase Database · checked Sep 17, 2026
19	Connectgen LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	11 contacts →
	Strong evidence “CONNECTING POWER, PROJECTS & PEOPLE ConnectGEN is developing renewable energy and energy storage projects across North America.” Source: RevenueBase Database · checked Sep 17, 2026
20	KNS Solar	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	10 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 17, 2026
21	Texas Solar Outfitters	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “TSO is the oldest solar installer in the City of Houston family operated and in the heart of town we have been servicing Houston and the greater State of Texas since 2012.” Source: RevenueBase Database · checked Sep 17, 2026
22	Fino Advisors LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Commercializing energy transition technologies” Source: RevenueBase Database · checked Sep 17, 2026
23	Almika	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	6 contacts →
	Partial evidence “Almika is set on disrupting how electricity is produced and consumed in today’s energy markets.” Source: RevenueBase Database · checked Sep 17, 2026
24	Merit SI	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Merit SI is a sustainable infrastructure company that develops, designs, builds and operates industrial-grade solar photovoltaic power plants, energy storage solutions, and…” Source: RevenueBase Database · checked Sep 17, 2026
25	Craftstrom	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “We're a renewable energy hardware & software development company.” Source: RevenueBase Database · checked Sep 17, 2026

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: renewable energy tech companies. 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 renewable energy tech companies.
Partial evidence: Its own public description names part of renewable energy tech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy tech companies. 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 79 renewable energy tech companies based in Houston, United States

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Renewable energy tech companies based in Houston, United States at a glance

As of Sep 17, 2026

21.6%Verified-email coverage

38.9Average contacts per company

11-50Median size (employees)

112.7%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 79 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 tech companies, 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.
What qualifies: Companies headquartered in Houston, United States whose own description of what they do matches “renewable energy tech companies”. 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 renewable energy tech companies), 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 renewable energy tech companies, 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 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, 663 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 17, 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 tech companies by metro in the United States

Renewable energy tech companies in New York89
Renewable energy tech companies in Houston79
Renewable energy tech companies in Austin60
Renewable energy tech companies in Dallas46
Renewable energy tech companies in San Diego44
Renewable energy tech companies in Los Angeles43
Renewable energy tech companies in San Francisco40
Renewable energy tech companies in Chicago38
Renewable energy tech companies in Boston30
Renewable energy tech companies in Miami30
Renewable energy tech companies in Irvine26
Renewable energy tech companies in Orlando25

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 renewable energy tech companies, 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 renewable energy tech companies are there based in Houston, United States?

RevenueBase identified 79 renewable energy tech companies 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?

Sunnova Energy, headquartered in Houston, tops this list with the largest team on record.

Which city has the most renewable energy tech companies?

New York leads with 89 headquartered companies, followed by Houston (79) and Austin (60).

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 663 verified decision-maker contacts tracked across these 79 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 17, 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.