Company lists · Data refreshed September 2026

Top 25 Electrical systems integration contractors based in Houston, United States

Name: Electrical systems integration contractors based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 240 companies tracked

RevenueBase identified 240 company matches for electrical systems integration contractors associated with Houston, United States as of September 2026 and tracks 15,196 professional contacts across them, including 4,707 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for electrical systems integration contractors 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 29, 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 29, 2026 How this list was built

240Companies

15,196Contacts tracked

4,707Verified emails

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The 25 largest electrical systems integration contractors based in Houston, United States

Ranked by team size

Top 25 of 240 company matches for electrical systems integration contractors based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	IES Holdings	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	5,001-10,000	2,567 contacts →
	Exact match “IES Holdings, Inc.(formerly known as Integrated Electrical Services, Inc.) provides electrical contracting services to commercial, industrial, and residential customers in the…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Powell	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,561 contacts →
	Exact match “Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Quanta Services, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	10001+	1,783 contacts →
	Exact match “Quanta Services (NYSE: PWR) is the leading specialty contractor with the largest and highly trained skilled workforce in North America, providing fully integrated solutions for…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	10001+	1,330 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Englobal	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	1,183 contacts →
	Exact match “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Wholesale Electric Supply Co. Of Houston, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	501-1,000	544 contacts →
	Exact match “Wholesale Electric Supply Company of Houston, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Saber Power	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	521 contacts →
	Exact match “Saber Power Services, a portfolio company of Greenbelt Capital Partners, is a fully integrated electrical power system services firm providing end-to-end solutions across utility…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	Resa Power	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	511 contacts →
	Exact match “RESA Power is your ONE-STOP for all of your power needs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	Fisk Electric CO	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	423 contacts →
	Exact match “As a division of one of America's largest construction companies (Tutor Perini Corporation), Fisk Electric Company provides the highest standards of electrical construction…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	MCA Communications, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	501-1,000	207 contacts →
	Exact match “MCA Communications is a Design-Build Technology Integrator specializing in network cabling infrastructure, audio visual installations, wireless solutions, and security solutions…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Trio Electric	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	189 contacts →
	Exact match “Trio Electric was founded in 2003.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Expanse Electrical CO	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	501-1,000	188 contacts →
	Exact match “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	IES Electrical	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	5,001-10,000	166 contacts →
	Exact match “For over six decades, our locally rooted electrical contractors have delivered solutions grounded in integrity, safety, cost-effectiveness, and uncompromising workmanship.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Kenmor Electric Company	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	152 contacts →
	Exact match “KenMor Electric is recognized for its service and craftsmanship.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	CEC Energy	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	132 contacts →
	Exact match “Since 1956, CEC Energy LLC, formally Coonrod Electric Co, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Jomar Electrical Contractors	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	114 contacts →
	Exact match “Jomar Electrical Contractors is a major participant in Texas construction industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Enterprise Electrical	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	105 contacts →
	Exact match “Electrical Contractor, specializing in design-build projects.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Unify Energy Solutions	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	51-200	101 contacts →
	Exact match “Unify Energy Solutions is a Building Automation Systems provider in Houston, Beaumont; Central, and South Texas; as well as Colorado and Wyoming.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Soap Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	11-50	87 contacts →
	Exact match “We have earned a reputation as a global leader in Design/Build & Systems Integration for more than 30 years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	BELCO	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	51-200	86 contacts →
	Exact match “BELCO (Blanco Electric Ltd Co) is a commercial electrical engineering, contracting and service company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Pieper-Houston Electric	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	74 contacts →
	Exact match “From large-scale design/build projects to small-scale maintenance jobs, you need a commercial electrical contractor who will be by your side from pre-construction through the…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	SCE Powerplus	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	51-200	65 contacts →
	Exact match “SCE PowerPlus Provides superior electrical contracting services for apartment complexes nationwide.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Wolfenson Electric INC	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	51-200	61 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Bayou Electrical Services	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	56 contacts →
	Exact match “At Bayou Electrical Services, we believe that great projects start with great people.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Melton Electrical And Structured Cabling	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	51-200	55 contacts →
	Exact match “Melton Electric, Inc.” Recorded in the RevenueBase company graph · Sep 29, 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 “electrical systems integration contractors”. 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 240 electrical systems integration contractors based in Houston, United States

See the full list, filter by size, metro and specialty, and access 4,707 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical systems integration contractors based in Houston, United States at a glance

As of Sep 29, 2026

31.0%Verified-email coverage

63.3Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 240 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 “electrical systems integration contractors” 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 4,707 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 29, 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.

Electrical systems integration contractors 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 “electrical systems integration contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical systems integration contractors are there based in Houston, United States?

RevenueBase identified 240 company matches for electrical systems integration contractors 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?

IES Holdings 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 electrical systems integration contractors?

Houston leads the United States with 240 company records, followed by New York (133) and Los Angeles (79).

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 4,707 professional contacts with verified work emails tracked across these 240 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 29, 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.