Company lists · Data refreshed September 2026

Top 25 Electrical systems integration contractors based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 11,905 companies tracked

RevenueBase identified 11,905 company matches for electrical systems integration contractors associated with the United States as of September 2026 and tracks 244,770 professional contacts across them, including 87,093 with verified work emails and 97,126 with mobile numbers. Houston is the largest hub.

This list covers company matches for electrical systems integration contractors associated with the 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

11,905Companies

244,770Contacts tracked

87,093Verified emails

97,126Mobile numbers

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The 25 largest electrical systems integration contractors based in the United States

Ranked by team size

Top 25 of 11,905 company matches for electrical systems integration contractors based in the 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	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 29, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	MMR Group	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	3,186 contacts →
	Exact match “At MMR we believe that no matter how much you achieve, you should never forget where you came from.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	M.C. Dean, INC	Exact match	Tysons, VA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	2,761 contacts →
	Exact match “M.C.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Automated Systems Design, INC	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 29, 2026	n/a	2,678 contacts →
	Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	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
6	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
7	Electrical Components International	Exact match	Southfield, MI, United StatesHQ recorded Sep 29, 2026	10001+	2,200 contacts →
	Exact match “Founded in 1953, Electrical Components International (ECI) is one of the world’s leading suppliers of electrical distribution systems, control box assemblies, and other critical…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	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
9	Helix Electric	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,560 contacts →
	Exact match “Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Miller Electric Company	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,388 contacts →
	Exact match “What started as an electrical lamp and appliance store in 1928 has grown into one of the largest companies in the industry with over employees.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	ISC Constructors, L.L.C	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,384 contacts →
	Exact match “ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Sep 29, 2026	10001+	1,383 contacts →
	Exact match “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	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
14	Facility Solutions Group	Exact match	Austin, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,276 contacts →
	Exact match “Big jobs, complex systems, tight timelines.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Gexpro	Exact match	Shelton, CT, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,266 contacts →
	Exact match “Gexpro is part of the Rexel family of business which together form one of the world’s largest electrical distributors.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	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
17	Bergelectric	Exact match	Carlsbad, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,182 contacts →
	Exact match “Since their inception in 1946, Bergelectric has made its mark on the construction industry by providing the highest quality electrical and technology contracting.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	MYR Group	Exact match	Thornton, CO, United StatesHQ recorded Sep 29, 2026	5,001-10,000	1,092 contacts →
	Exact match “With roots dating to 1891 and 8,500+ employees, MYR Group Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Walker Engineering	Exact match	Irving, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,049 contacts →
	Exact match “Walker Engineering has a solid reputation in the industry that is based on over 45 years of delivering top notch electrical work for a fair and competitive price.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Industrial Electric Mfg. IEM	Exact match	Fremont, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	969 contacts →
	Exact match “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Interstates	Exact match	Sioux Center, IA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	938 contacts →
	Exact match “As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Mesa Associates, INC	Exact match	Madison, AL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	897 contacts →
	Exact match “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Prime Controls	Exact match	Lewisville, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	857 contacts →
	Exact match “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Awc, INC	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 29, 2026	501-1,000	848 contacts →
	Exact match “We love our customers and are committed to providing Better Automation and Controls Solutions, Products, Engineering, Services and Support to them.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Mcnaughton-Mckay Electric Company	Exact match	Madison Heights, MI, United StatesHQ recorded Sep 29, 2026	501-1,000	819 contacts →
	Exact match “McNaughton-McKay is exceeding customer expectations during every interaction and transaction.” 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 11,905 electrical systems integration contractors based in the United States

See the full list, filter by size, metro and specialty, and access 87,093 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical systems integration contractors based in the United States at a glance

As of Sep 29, 2026

35.6%Verified-email coverage

39.7%Mobile-number coverage

20.6Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

5,044

11-50

4,385

51-200

1,739

201-500

406

501-1,000

145

1,001-5,000

108

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 32.0d

37,9670–30

48,53331–60

2,94161–90

8490–180

460180+

Company record updated

Median 92.0d

00–30

45,30731–60

43,80661–90

151,33090–180

9,955180+

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 the 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 87,093 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

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 the United States?

RevenueBase identified 11,905 company matches for electrical systems integration contractors associated with the 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?

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

Which city has the most electrical systems integration contractors?

Houston leads 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 87,093 professional contacts with verified work emails tracked across these 11,905 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.