Company lists · Data refreshed September 2026

Top 25 Renewable energy equipment upgrade companies based in Houston, United States

Name: Renewable energy equipment upgrade 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 70 companies tracked

RevenueBase identified 70 company matches for renewable energy equipment upgrade companies associated with Houston, United States as of September 2026 and tracks 1,916 professional contacts across them, including 696 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for renewable energy equipment upgrade companies associated with Houston, 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 September 17, 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 Sep 17, 2026 How this list was built

70Companies

1,916Contacts tracked

696Verified emails

Explore this list → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 70 company matches for renewable energy equipment upgrade companies based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Stem, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	417 contacts →
	Exact match “At Stem, we’re reimagining technology to drive the energy transition.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Signal Energy	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	409 contacts →
	Exact match “Signal Energy is a leading full service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable energy & infrastructure projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Trismart Solar	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	167 contacts →
	Exact match “Our mission is to help people achieve energy independence quickly, easily, and affordably using the power of the sun and teamwork.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Catalyze	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	156 contacts →
	Exact match “Founded in 2017, Catalyze is a fully integrated developer and Independent Power Producer (IPP) of distributed renewable energy assets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Clean Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	101 contacts →
	Exact match “Clean Energy Services provides reliable services for renewable assets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	E'kabel	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	96 contacts →
	Exact match “At E’kabel, we design and implement solutions that drive efficiency, sustainability, and performance across energy operations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Fastrac Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	45 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Total Energy Solutions	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	33 contacts →
	Exact match “Total Energy Systems (TES) is a leading provider of integrated power generation solutions with market leading equipment, engineering and support guaranteeing dependable and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Knight Construction	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	201-500	23 contacts →
	Exact match “Knight Construction provides mechanical installation services for the solar construction industry that include pile driving, racking assembly and solar module installation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Sunshine Renewable Solutions	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	21 contacts →
	Exact match “Texas' first NABCEP Accredited PV Installation Company • NABCEP Certified PV Installation Professional # PV-102117-017952 Sunshine Renewable Solutions was established to address…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Solstice Solar	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “Solstice Solar is a Houston-based, licensed, insured, and certified Electrical Contractor specializing in residential solar and energy storage solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Zolarzo	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	19 contacts →
	Exact match “We are a company specialized in the installation of solar energy systems and roof replacement.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	OMNE	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	18 contacts →
	Exact match “Our focus is cost effective service solutions in the renewable energy space.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Texon Solar Energy LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “Texon Solar has you covered!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	KNS Solar	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	10 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Texas Solar Outfitters	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	CLS Wind	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1-10	7 contacts →
	Exact match “CLS Wind's technical innovations result in faster, safer, cheaper and more efficient installation, maintenance, repair and decommissioning of onshore and offshore wind turbines.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Creatum Energy	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	7 contacts →
	Exact match “Our expertise extends to data center, power generation, solar, wind, oil and gas, and other energy sources, providing clients with tailored strategies for a cleaner and more…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Amperion	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	51-200	7 contacts →
	Exact match “Amperion provides installation, testing, troubleshooting, and commissioning in support of renewable construction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	KW Solar	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “We put solar panels on roofs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Merit SI	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “Merit SI is a sustainable infrastructure company that develops, designs, builds and operates industrial-grade solar photovoltaic power plants, energy storage solutions, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Creatum Solar	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	4 contacts →
	Exact match “At Creatum Solar, we're on a mission to harness the boundless power of the sun and make it accessible to you.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Renewable Watt	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	4 contacts →
	Exact match “Service Powered by Experience.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Solenergy LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	3 contacts →
	Exact match “SolEnergy provides full service assistance in moving your home or business toward the future of clean renewable energy solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Netergy INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	3 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “renewable energy equipment upgrade companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 70 renewable energy equipment upgrade companies based in Houston, United States

See the full list, filter by size, metro and specialty, and access 696 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

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

As of Sep 17, 2026

36.3%Verified-email coverage

27.4Average contacts per company

11-50Median size (employees)

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 70 companies.

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 Houston, United States whose business descriptions match “renewable energy equipment upgrade 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 696 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 September 17, 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.

Renewable energy equipment upgrade companies by metro in the United States

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 “renewable energy equipment upgrade companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many renewable energy equipment upgrade companies are there based in Houston, United States?

RevenueBase identified 70 company matches for renewable energy equipment upgrade companies associated with Houston, United States as of September 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?

Stem, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most renewable energy equipment upgrade companies?

Houston leads the United States with 70 company records, followed by San Diego (66) and Austin (45).

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 696 professional contacts with verified work emails tracked across these 70 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 September 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 70 renewable energy equipment upgrade companies based in Houston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Renewable energy equipment upgrade companies by geography

Browse the directory

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.