Company lists · Data refreshed November 2026

Top 25 Electrical systems integration contractors worldwide

Name: Electrical systems integration contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 57,896 companies tracked

RevenueBase identified 57,896 company matches for electrical systems integration contractors worldwide as of November 2026 and tracks 712,988 professional contacts across them, including 181,044 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for electrical systems integration contractors worldwide, 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 November 6, 2026. Country and city lists for electrical systems integration contractors follow the table.

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 Nov 6, 2026 How this list was built

57,896Companies

712,988Contacts tracked

181,044Verified emails

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The 25 largest electrical systems integration contractors worldwide

Ranked by team size

Top 25 of 57,896 company matches for electrical systems integration contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 2026	10001+	6,031 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 · Nov 6, 2026 · View company records in RevenueBase
2	MMR Group	Exact match	Baton Rouge, LA, United StatesHQ recorded Nov 6, 2026	10001+	3,529 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 · Nov 6, 2026 · View company records in RevenueBase
3	M.C. Dean, INC	Exact match	Tysons, VA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	3,496 contacts →
	Exact match “M.C.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	ATS Corporation	Exact match	Cambridge, ON, CanadaHQ recorded Nov 6, 2026	5,001-10,000	2,912 contacts →
	Exact match “HELPING ADVANCE THE FUTURE ATS Corporation is an industry-leading automation solutions provider to many of the world's most successful companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Automated Systems Design, INC	Exact match	Alpharetta, GA, United StatesHQ recorded Nov 6, 2026	n/a	2,754 contacts →
	Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	IES Holdings	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,710 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 · Nov 6, 2026 · View company records in RevenueBase
7	Powell	Exact match	Houston, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,666 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 · Nov 6, 2026 · View company records in RevenueBase
8	Omexom	Exact match	Nanterre, FranceHQ recorded Nov 6, 2026	5,001-10,000	2,108 contacts →
	Exact match “With today's global energy sector undergoing constant change, Omexom works with its clients in delivering on the promises of the energy transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Quanta Services, INC	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	10001+	2,000 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 · Nov 6, 2026 · View company records in RevenueBase
10	Engelmig Energia	Exact match	Belo Horizonte, BrazilHQ recorded Nov 6, 2026	5,001-10,000	1,929 contacts →
	Exact match “A Engelmig foi fundada em 1985 com o objetivo de prestar serviços de engenharia em redes de distribuição de energia elétrica.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Icad-Ksa	Exact match	Jeddah, Saudi ArabiaHQ recorded Nov 6, 2026	5,001-10,000	1,774 contacts →
	Exact match “ICAD-KSA is a Master Systems Integrator supporting Saudi Arabia’s giga and mega projects under Vision 2030.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Helix Electric	Exact match	San Diego, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,666 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 · Nov 6, 2026 · View company records in RevenueBase
13	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,642 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	SIBCA	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Nov 6, 2026	1,001-5,000	1,569 contacts →
	Exact match “From humble beginnings in 1977, SIBCA has grown to become a leading Solution Integrator Provider in UAE for Fire Protection and Life Safety Systems, Security Systems, HVAC…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Kirby Group Engineering	Exact match	Limerick, IrelandHQ recorded Nov 6, 2026	1,001-5,000	1,563 contacts →
	Exact match “Founded in 1964, Kirby is a leading Mechanical and Electrical engineering contractor with operations in Ireland, the UK, mainland Europe and South Africa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Nov 6, 2026	10001+	1,493 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 · Nov 6, 2026 · View company records in RevenueBase
17	ISC Constructors, L.L.C	Exact match	Baton Rouge, LA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,491 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 · Nov 6, 2026 · View company records in RevenueBase
18	Control Construções Ltda	Exact match	Joao Pessoa, BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,471 contacts →
	Exact match “Fundada em na cidade de João Pessoa, a empresa se tornou especialista nas áreas de construção e prestação de serviços no setor elétrico.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Hoppenbrouwers	Exact match	Udenhout, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	1,424 contacts →
	Exact match “Koninklijke Hoppenbrouwers is in de afgelopen 100 jaar uitgegroeid naar de technische dienstverlener die van A tot Z ontzorgt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Comfort Systems USA	Exact match	Houston, IN, United StatesHQ recorded Nov 6, 2026	10001+	1,407 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Nov 6, 2026	1,001-5,000	1,385 contacts →
	Exact match “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	MJ Quinn	Exact match	Prescot, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,373 contacts →
	Exact match “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Facility Solutions Group	Exact match	Austin, KS, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,345 contacts →
	Exact match “Big jobs, complex systems, tight timelines.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Industrial Electric Mfg. IEM	Exact match	Fremont, BC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,317 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 · Nov 6, 2026 · View company records in RevenueBase
25	Gexpro	Exact match	Shelton, CT, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,304 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 · Nov 6, 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 57,896 electrical systems integration contractors worldwide

See the full list, filter by size, metro and specialty, and access 181,044 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical systems integration contractors worldwide at a glance

As of Nov 6, 2026

25.4%Verified-email coverage

12.3Average contacts per company

11-50Median size (employees)

0.7%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

26,247

11-50

20,957

51-200

6,949

201-500

1,517

501-1,000

452

1,001-5,000

298

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for electrical systems integration contractors are linked below.
What qualifies: Company records worldwide 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. 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 181,044 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 November 6, 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 location

226 lists · largest first

Every Electrical systems integration contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 worldwide?

RevenueBase identified 57,896 company matches for electrical systems integration contractors worldwide as of November 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 country has the most electrical systems integration contractors?

The United States leads with 11,522 companies, followed by the United Kingdom (5,577) and Italy (3,587). Every electrical systems integration contractors list by country and city is linked on this page.

Which city has the most electrical systems integration contractors?

London leads with 401 company records, followed by Sao Paulo (369) and Dubai (271).

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 181,044 professional contacts with verified work emails tracked across these 57,896 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 November 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 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.