Company lists · Data refreshed October 2026

Top 25 Electrical system installation contractors worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 38,864 companies tracked

RevenueBase identified 38,864 company matches for electrical system installation contractors worldwide as of October 2026 and tracks 281,564 professional contacts across them, including 62,851 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for electrical system installation 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 October 12, 2026. Country and city lists for electrical system installation 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 Oct 12, 2026 How this list was built

38,864Companies

281,564Contacts tracked

62,851Verified emails

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The 25 largest electrical system installation contractors worldwide

Ranked by team size

Top 25 of 38,864 company matches for electrical system installation contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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 Oct 12, 2026	5,001-10,000	2,661 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 · Oct 12, 2026 · View company records in RevenueBase
2	Helix Electric	Exact match	San Diego, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,618 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 · Oct 12, 2026 · View company records in RevenueBase
3	Facility Solutions Group	Exact match	Austin, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,294 contacts →
	Exact match “Big jobs, complex systems, tight timelines.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Elec-Tech Electrical Contractors	Exact match	Long Beach, CA, United StatesHQ recorded Oct 12, 2026	n/a	778 contacts →
	Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Prism Electric	Exact match	Garland, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	717 contacts →
	Exact match “Our story began in 1994 with a simple vision: Build a company that does things right.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	M. J. Electric, LLC	Exact match	Iron Mountain, MI, United StatesHQ recorded Oct 12, 2026	1,001-5,000	666 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Cache Valley Electric	Exact match	Logan, UT, United StatesHQ recorded Oct 12, 2026	1,001-5,000	662 contacts →
	Exact match “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	HOULE	Exact match	Burnaby, BC, CanadaHQ recorded Oct 12, 2026	501-1,000	654 contacts →
	Exact match “At Houle, we are passionate about bringing communities to life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Temon Técnica DE Montagens E Construções	Exact match	Sao Paulo, BrazilHQ recorded Oct 12, 2026	1,001-5,000	646 contacts →
	Exact match “Desde 1978 atuando na execução de Instalações Elétricas e Hidráulicas, a Temon conseguiu firmar sua marca nesse mercado com participação em mais de obras por todo Brasil e…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	615 contacts →
	Exact match “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Resa Power	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	590 contacts →
	Exact match “RESA Power is your ONE-STOP for all of your power needs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	CSI Electrical Contractors, INC	Exact match	Santa Fe Springs, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	585 contacts →
	Exact match “Founded in 1990, CSI has become a leader in highly technical and innovative electrical design and construction.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	585 contacts →
	Exact match “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Electrical Engineering And Equipment	Exact match	Windsor Heights, IA, United StatesHQ recorded Oct 12, 2026	201-500	567 contacts →
	Exact match “Established in 1920, Electrical Engineering & Equipment Company known as 3E, is an industry leader with diverse capabilities.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Tata Consultancy Service TCS	Exact match	Nagpur, IndiaHQ recorded Oct 12, 2026	51-200	566 contacts →
	Exact match “Tata Consultancy Service(TCS) Plumbing / Remodeling / Repair / Maintenance of residential electrical wiring maintenance services, electrical panel maintenance & lighting…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Hunt Electric	Exact match	Eagan, MN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	565 contacts →
	Exact match “Hunt Electric is a national electrical design, build, and maintenance firm based in Eagan, MN.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Morrow-Meadows Corporation	Exact match	City Of Industry, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	536 contacts →
	Exact match “With over six decades of experience, Morrow-Meadows Corporation (MMC) is a full-service electrical contracting company able to fulfill our customer’s every electrical need, no…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	EC Electric	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	1,001-5,000	530 contacts →
	Exact match “Our lives function on a power grid.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Nrgi Elcon	Exact match	Brabrand, DenmarkHQ recorded Oct 12, 2026	1,001-5,000	524 contacts →
	Exact match “EL:CON is a solid, nationwide electrical installation company – both in regards to competences and economy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	B. Tobace Instalações Elétricas E Telefônicas Ltda	Exact match	Jaboticabal, BrazilHQ recorded Oct 12, 2026	1,001-5,000	521 contacts →
	Exact match “B.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Pieper Electric, INC	Exact match	New Berlin, WI, United StatesHQ recorded Oct 12, 2026	501-1,000	508 contacts →
	Exact match “At Pieper Electric, Inc,"Our People Are Our Power" isn't just a phrase; it's our way of life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	ACE Electric, INC	Exact match	Valdosta, GA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	486 contacts →
	Exact match “Ace Electric is a family-owned/operated electrical contractor performing safe and high-quality work for clients throughout the United States.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Amteck, LLC	Exact match	Lexington, KY, United StatesHQ recorded Oct 12, 2026	501-1,000	483 contacts →
	Exact match “Amteck is one of Kentucky’s largest privately held electrical construction firms, providing design-build electrical construction services for a wide variety of facilities…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Tri-City Electrical Contractors, INC	Exact match	Altamonte Springs, FL, United StatesHQ recorded Oct 12, 2026	501-1,000	482 contacts →
	Exact match “Founded in 1958, Tri-City Electrical Contractors is a leading Florida-based electrical contractor built on innovation, craftsmanship, and a people-first culture.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	E-J Electric Installation CO	Exact match	Long Island City, NY, United StatesHQ recorded Oct 12, 2026	1,001-5,000	471 contacts →
	Exact match “The E-J Group is active in all facets of electrical contracting, bringing experience, expertise, and a national reputation to projects that range in size up to more than $1…” Recorded in the RevenueBase company graph · Oct 12, 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 system installation 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 38,864 electrical system installation contractors worldwide

See the full list, filter by size, metro and specialty, and access 62,851 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical system installation contractors worldwide at a glance

As of Oct 12, 2026

22.3%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · London

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

20,471

11-50

13,182

51-200

3,658

201-500

645

501-1,000

167

1,001-5,000

101

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 system installation contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “electrical system installation 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 62,851 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 October 12, 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 system installation contractors by location

97 lists · largest first

Every Electrical system installation 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 system installation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical system installation contractors are there worldwide?

RevenueBase identified 38,864 company matches for electrical system installation contractors worldwide as of October 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 country has the most electrical system installation contractors?

The United States leads with 9,424 companies, followed by the United Kingdom (4,545) and Italy (2,253). Every electrical system installation contractors list by country and city is linked on this page.

Which city has the most electrical system installation contractors?

London leads with 291 company records, followed by Sao Paulo (190) and Houston (140).

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 62,851 professional contacts with verified work emails tracked across these 38,864 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 October 12, 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.