Company lists · Data refreshed September 2026
Top 25 Solar energy companies based in Houston, United States
RevenueBase identified 106 solar energy companies headquartered in Houston, United States as of September 2026 and tracks 2,864 professional contacts across them, including 608 with verified work emails. San Diego is the largest hub.
This list covers solar energy 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 6, 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.
The 25 largest solar energy companies based in Houston, United States
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Partial evidence | 906 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Partial evidence | 409 contacts → | |||
“Signal Energy is a leading full service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable energy & infrastructure projects.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Partial evidence | 186 contacts → | |||
“Spruce Power is one of the largest owner-operators of residential solar portfolios in the US.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Partial evidence | 167 contacts → | |||
“Our mission is to help people achieve energy independence quickly, easily, and affordably using the power of the sun and teamwork.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Partial evidence | 156 contacts → | |||
“Founded in 2017, Catalyze is a fully integrated developer and Independent Power Producer (IPP) of distributed renewable energy assets.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Partial evidence | 101 contacts → | |||
“Clean Energy Services provides reliable services for renewable assets.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Strong evidence | 45 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Partial evidence | 42 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Strong evidence | 38 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Partial evidence | 36 contacts → | |||
“Providing experienced, high production crews for large-scale utility solar projects.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Partial evidence | 33 contacts → | |||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Partial evidence | 33 contacts → | |||
“Total Energy Systems (TES) is a leading provider of integrated power generation solutions with market leading equipment, engineering and support guaranteeing dependable and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Partial evidence | 24 contacts → | |||
“Bioeco Energy’s alternative energy solutions capture the renewable power of the sun, fueling new possibilities for your business and home.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Partial evidence | 23 contacts → | |||
“Knight Construction provides mechanical installation services for the solar construction industry that include pile driving, racking assembly and solar module installation.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Partial evidence | 22 contacts → | |||
“Lone Star Solar Services LLC is a company that specializes in offering electrical solutions for solar power systems in residential and commercial properties.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 21 contacts → | |||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Strong evidence | 20 contacts → | |||
“Solstice Solar is a Houston-based, licensed, insured, and certified Electrical Contractor specializing in residential solar and energy storage solutions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Strong evidence | 19 contacts → | |||
“We are a company specialized in the installation of solar energy systems and roof replacement.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Partial evidence | 14 contacts → | |||
“Texon Solar has you covered!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Partial evidence | 10 contacts → | |||
“Blended Power is a Houston, Texas based project development engineering consultant that provides technical and permitting support for renewable energy and data center projects.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Strong evidence | 10 contacts → | |||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Partial evidence | 10 contacts → | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Strong evidence | 7 contacts → | |||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Indirect evidence | 7 contacts → | |||
“Amperion provides installation, testing, troubleshooting, and commissioning in support of renewable construction.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Partial evidence | 6 contacts → | |||
“At Solea, we provide exceptional service by designing tailored solutions for Texan landowners that share a vision for local, reliable, and clean energy.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
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: solar energy 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 solar energy companies.
- Partial evidence
- Its own public description names part of solar energy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name solar energy 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 106 solar energy companies based in Houston, United States
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Solar energy companies based in Houston, United States at a glance
As of Sep 6, 2026Companies by employee count
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 106 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 solar energy 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 “solar energy 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 solar energy 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 solar energy 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, 608 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 6, 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.
Solar energy companies by metro in the United States
- Solar energy companies in San Diego111
- Solar energy companies in Houston106
- Solar energy companies in New York93
- Solar energy companies in Austin89
- Solar energy companies in Los Angeles80
- Solar energy companies in Dallas71
- Solar energy companies in Phoenix70
- Solar energy companies in Denver65
- Solar energy companies in Miami62
- Solar energy companies in San Francisco62
- Solar energy companies in Orlando59
- Solar energy companies in Las Vegas54
- Solar energy companies in Chicago53
- Solar energy companies in Irvine53
- Solar energy companies in San Antonio50
- Solar energy companies in Atlanta48
- Solar energy companies in Tampa48
- Solar energy companies in Sacramento34
- Solar energy companies in Fresno33
- Solar energy companies in San Jose33
- Solar energy companies in Scottsdale32
- Solar energy companies in Charlotte31
- Solar energy companies in Washington31
- Solar energy companies in Albuquerque30
- Solar energy companies in Tempe30
- Solar energy companies in Tucson30
- Solar energy companies in Portland28
- Solar energy companies in Fort Worth27
- Solar energy companies in Bakersfield26
- Solar energy companies in Kansas City25
- Solar energy companies in Salt Lake City25
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 solar energy 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 solar energy companies are there based in Houston, United States?
RevenueBase identified 106 solar energy 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 solar energy companies?
San Diego leads with 111 headquartered companies, followed by Houston (106) and New York (93).
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 608 verified decision-maker contacts tracked across these 106 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 6, 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.
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