Company lists · Data refreshed September 2026

Top 25 Commercial solar design firms based in Houston, United States

Name: Commercial solar design 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 16, 2026 108 companies tracked

RevenueBase identified 108 commercial solar design firms headquartered in Houston, United States as of September 2026 and tracks 1,461 professional contacts across them, including 463 with verified work emails. New York is the largest hub.

This list covers commercial solar design 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 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 16, 2026 86% judged on-target in blind review

108Companies

1,461Contacts tracked

463Verified emails

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The 25 largest commercial solar design firms based in Houston, United States

Ranked by team size

Top 25 of 108 commercial solar design firms based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial solar design firms: 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	Signal Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	409 contacts →
	Partial evidence “Signal Energy is a leading full service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable energy & infrastructure projects.” Source: RevenueBase Database · checked Sep 16, 2026
2	KDW	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	51-200	74 contacts →
	Indirect evidence “KDW is headquartered in Houston and serves both domestic and international clients.” Source: RevenueBase Database · checked Sep 16, 2026
3	Abel Design Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	67 contacts →
	Partial evidence “Founded in Houston, Texas in 2001, Abel Design Group (ADG) is an award-winning architecture and interior design firm specializing in corporate, hospitality, higher education…” Source: RevenueBase Database · checked Sep 16, 2026
4	Harrisonkornberg Architects	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	49 contacts →
	Indirect evidence “Founded in 2003, HarrisonKornberg Architects provides a full range of high-quality architectural services to the Texas market and beyond.” Source: RevenueBase Database · checked Sep 16, 2026
5	SLI Group, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	46 contacts →
	Strong evidence “SLI Group, Inc, founded in 1976, is a fully integrated commercial design build firm.” Source: RevenueBase Database · checked Sep 16, 2026
6	Fastrac Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 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 16, 2026
7	Integratesun	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	38 contacts →
	Strong 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 16, 2026
8	Identity Architects	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	34 contacts →
	Strong evidence “Founded in Houston, Identity Architecture is a commercial architecture firm specializing in master planning, architecture, interior design, and design-build options.” Source: RevenueBase Database · checked Sep 16, 2026
9	Peterson Scharck & Associates	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	30 contacts →
	Partial evidence “Combining the best in architectural and commercial lighting & controls with experienced professionals to provide innovative solutions.” Source: RevenueBase Database · checked Sep 16, 2026
10	Bioeco Energy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	24 contacts →
	Indirect 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 16, 2026
11	Lonestar Solar Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	51-200	22 contacts →
	Strong evidence “Lone Star Solar Services LLC is a company that specializes in offering electrical solutions for solar power systems in residential and commercial properties.” Source: RevenueBase Database · checked Sep 16, 2026
12	Sunshine Renewable Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	21 contacts →
	Indirect 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 16, 2026
13	Solstice Solar	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Partial evidence “Solstice Solar is a Houston-based, licensed, insured, and certified Electrical Contractor specializing in residential solar and energy storage solutions.” Source: RevenueBase Database · checked Sep 16, 2026
14	Zolarzo	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	51-200	19 contacts →
	Partial evidence “We are a company specialized in the installation of solar energy systems and roof replacement.” Source: RevenueBase Database · checked Sep 16, 2026
15	Marie Flanigan Interiors	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	18 contacts →
	Partial evidence “Marie Flanigan Interiors is a full-service interior design firm that manages projects around the country.” Source: RevenueBase Database · checked Sep 16, 2026
16	Outdoor Elements, TX	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	18 contacts →
	Strong evidence “Outdoor Elements is a premier construction design-build company specializing in a diverse array of services meticulously crafted for commercial projects.” Source: RevenueBase Database · checked Sep 16, 2026
17	Hargrave Electric	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	51-200	17 contacts →
	Partial evidence “Hargrave Electric is the premier design build electrical contractor located in Houston, TX.” Source: RevenueBase Database · checked Sep 16, 2026
18	Browne Mcgregor Architects INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “Founded in 1995 Browne McGregor Architects is a mid-sized architectural firm specializing in the design of aesthetically pleasing, highly functional, sustainable buildings.” Source: RevenueBase Database · checked Sep 16, 2026
19	Loma Architecture	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Indirect evidence “LOMA Architecture is a full-service architectural firm based in Houston, Texas.” Source: RevenueBase Database · checked Sep 16, 2026
20	Victory Lighting Services INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	15 contacts →
	Partial evidence “Interior/Exterior Lighting & Electrical Maintenance Lighting Consulting/Design & Energy Analysis Lightbulb & Fixture Distribution Electrical Construction” Source: RevenueBase Database · checked Sep 16, 2026
21	LA Architects, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	14 contacts →
	Strong evidence “Architectural Design Services specializing in retail commercial, banking, medical, hospitality, office and industrial building types.” Source: RevenueBase Database · checked Sep 16, 2026
22	Texon Solar Energy LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	14 contacts →
	Partial evidence “Texon Solar has you covered!” Source: RevenueBase Database · checked Sep 16, 2026
23	LO Architecture	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1-10	11 contacts →
	Strong evidence “LO architecture provides commercial architectural and consulting services, from feasibility studies and conceptual design to permitting and construction administration.” Source: RevenueBase Database · checked Sep 16, 2026
24	Gandy Lighting Design - G2ld	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1-10	11 contacts →
	Partial evidence “G2LD is a HUB certified Architectural Lighting Design Company that offers the following services: Full lighting consultation and design services including Schematic Design, Design…” Source: RevenueBase Database · checked Sep 16, 2026
25	Synchro	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Strong evidence “Synchro is a Houston-based design and construction firm serving clients across Texas and Louisiana with fully integrated planning, architecture, and commercial construction…” Source: RevenueBase Database · checked Sep 16, 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: commercial solar design firms. 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 commercial solar design firms.
Partial evidence: Its own public description names part of commercial solar design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial solar design firms. 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 108 commercial solar design firms based in Houston, United States

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Commercial solar design firms based in Houston, United States at a glance

As of Sep 16, 2026

31.7%Verified-email coverage

13.5Average contacts per company

11-50Median size (employees)

141.7%Largest-city concentration · New York

Sep 16, 2026Page data 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 for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 108 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 commercial solar design firms, 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 “commercial solar design firms”. 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 commercial solar design firms), 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 commercial solar design 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 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, 463 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 16, 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.

Commercial solar design firms by metro in the United States

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 commercial solar design firms, 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 commercial solar design firms are there based in Houston, United States?

RevenueBase identified 108 commercial solar design 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?

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

Which city has the most commercial solar design firms?

New York leads with 153 headquartered companies, followed by Houston (108) and Los Angeles (98).

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 463 verified decision-maker contacts tracked across these 108 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 16, 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.