Company lists · Data refreshed September 2026

Top 25 Data center electrical contractors worldwide

Name: Data center electrical contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 26,069 companies tracked

RevenueBase identified 26,069 data center electrical contractors worldwide as of September 2026 and tracks 255,438 professional contacts across them, including 69,510 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers data center electrical contractors worldwide, 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. Country and city lists for data center electrical contractors follow the table.

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

26,069Companies

255,438Contacts tracked

69,510Verified emails

0Mobile numbers

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The 25 largest data center electrical contractors worldwide

Ranked by team size

Top 25 of 26,069 data center electrical contractors worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to data center electrical contractors: 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	IES Holdings	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	5,001-10,000	2,567 contacts →
	Partial evidence “IES Holdings, Inc.(formerly known as Integrated Electrical Services, Inc.) provides electrical contracting services to commercial, industrial, and residential customers in the…” Source: RevenueBase Database · checked Sep 16, 2026
2	Enercon Services, INC	Strong evidence	Kennesaw, GA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,865 contacts →
	Strong evidence “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Source: RevenueBase Database · checked Sep 16, 2026
3	Grupo RCS	Indirect evidence	Brasilia, BrazilHQ checked Sep 16, 2026	5,001-10,000	1,810 contacts →
	Indirect evidence “A RCS é uma empresa de Engenharia especializada em oferecer serviços técnicos de missão crítica com alta tecnologia aplicada, para clientes que necessitam manter suas atividades…” Source: RevenueBase Database · checked Sep 16, 2026
4	Kemp & Lauritzen A S	Indirect evidence	Albertslund, DenmarkHQ checked Sep 16, 2026	1,001-5,000	1,628 contacts →
	Indirect evidence “Kemp & Lauritzen arbejder med tekniske installationer med stor spændvidde og høj grad af specialisering.” Source: RevenueBase Database · checked Sep 16, 2026
5	Helix Electric	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,560 contacts →
	Strong evidence “Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.” Source: RevenueBase Database · checked Sep 16, 2026
6	Kirby Group Engineering	Strong evidence	Limerick, IrelandHQ checked Sep 16, 2026	1,001-5,000	1,486 contacts →
	Strong evidence “Founded in 1964, Kirby is a leading Mechanical and Electrical engineering contractor with operations in Ireland, the UK, mainland Europe and South Africa.” Source: RevenueBase Database · checked Sep 16, 2026
7	Bravida Danmark A S	Indirect evidence	Brøndby, DenmarkHQ checked Sep 16, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
8	Facility Solutions Group	Indirect evidence	Austin, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,276 contacts →
	Indirect evidence “Big jobs, complex systems, tight timelines.” Source: RevenueBase Database · checked Sep 16, 2026
9	J Brand LTD	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	n/a	1,245 contacts →
	Partial evidence “Originally set up in 1933 by Joseph Brand as an electrical contracting and repair business in Margaret Street W1, the company today still operates today with the same guiding…” Source: RevenueBase Database · checked Sep 16, 2026
10	Wachter, INC	Indirect evidence	Lenexa, KS, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,237 contacts →
	Indirect evidence “Wachter is on the cutting-edge of technology and infrastructure installation and has been since 1930.” Source: RevenueBase Database · checked Sep 16, 2026
11	Bergelectric	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,182 contacts →
	Partial evidence “Since their inception in 1946, Bergelectric has made its mark on the construction industry by providing the highest quality electrical and technology contracting.” Source: RevenueBase Database · checked Sep 16, 2026
12	MJ Quinn	Indirect evidence	Prescot, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,126 contacts →
	Indirect evidence “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Source: RevenueBase Database · checked Sep 16, 2026
13	Walker Engineering	Partial evidence	Irving, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,049 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
14	Suir Engineering	Partial evidence	Waterford, GermanyHQ checked Sep 16, 2026	1,001-5,000	878 contacts →
	Partial evidence “Suir Engineering, a trusted partner in excellence with over 40 years of international experience, specialises in electrical, mechanical, instrumentation and high voltage.” Source: RevenueBase Database · checked Sep 16, 2026
15	Sturgeon Electric Company, INC	Indirect evidence	Henderson, CO, United StatesHQ checked Sep 16, 2026	1,001-5,000	806 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
16	Elec-Tech Electrical Contractors	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 16, 2026	n/a	782 contacts →
	Indirect evidence “WELCOME TO OUR WEBSITE!” Source: RevenueBase Database · checked Sep 16, 2026
17	Winthrop Technologies	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	501-1,000	764 contacts →
	Strong evidence “Winthrop Technologies is a dedicated data centre delivery partner providing turnkey solutions to our clients, headquartered in Dublin and delivering throughout Europe.” Source: RevenueBase Database · checked Sep 16, 2026
18	Fredon	Partial evidence	Silverwater, AustraliaHQ checked Sep 16, 2026	1,001-5,000	760 contacts →
	Partial evidence “Fredon is an Australian leader in Electrical, HVAC, Infrastructure and Technology services, backed by 24/7 national maintenance capability.” Source: RevenueBase Database · checked Sep 16, 2026
19	Archkey Solutions	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 16, 2026	1,001-5,000	744 contacts →
	Indirect evidence “ArchKey, one of the largest privately held specialty trade installation and facilities services companies in the United States, is a leader in designing, building, and maintaining…” Source: RevenueBase Database · checked Sep 16, 2026
20	SASCO	Partial evidence	Fullerton, CA, United StatesHQ checked Sep 16, 2026	501-1,000	734 contacts →
	Partial evidence “SASCO has been a leader in electrical construction and low-voltage systems technologies for 50 years.” Source: RevenueBase Database · checked Sep 16, 2026
21	Prism Electric	Indirect evidence	Garland, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	687 contacts →
	Indirect evidence “Our story began in 1994 with a simple vision: Build a company that does things right.” Source: RevenueBase Database · checked Sep 16, 2026
22	Comfica Soluciones Integrales S.L	Partial evidence	Fuenlabrada, SpainHQ checked Sep 16, 2026	201-500	684 contacts →
	Partial evidence “Empresa especializada en la ingenieria, desarrollo, construccion, instalación, y puesta en marcha de instalaciones de telecomunicaciones, electricidad, señalización, redes de…” Source: RevenueBase Database · checked Sep 16, 2026
23	Baker Electric	Strong evidence	Escondido, CA, United StatesHQ checked Sep 16, 2026	501-1,000	680 contacts →
	Strong evidence “Baker Electric is a full-service electrical contractor and energy infrastructure expert headquartered in Escondido, California.” Source: RevenueBase Database · checked Sep 16, 2026
24	Insyte Instalaciones	Indirect evidence	Getafe, SpainHQ checked Sep 16, 2026	1,001-5,000	628 contacts →
	Indirect evidence “Insyte Instalaciones inicia su actividad en 1990 como empresa instaladora en el sector eléctrico y de telecomunicaciones.” Source: RevenueBase Database · checked Sep 16, 2026
25	Cache Valley Electric	Strong evidence	Logan, UT, United StatesHQ checked Sep 16, 2026	1,001-5,000	627 contacts →
	Strong evidence “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” 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: data center electrical contractors. 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 data center electrical contractors.
Partial evidence: Its own public description names part of data center electrical contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data center electrical contractors. 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 26,069 data center electrical contractors worldwide

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Data center electrical contractors worldwide at a glance

As of Sep 16, 2026

27.2%Verified-email coverage

9.8Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

12,785

11-50

9,238

51-200

2,829

201-500

523

501-1,000

149

1,001-5,000

111

5,001-10,000

10001+

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 data center electrical contractors, 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.
Coverage: 39 countries, largest first: the United States, the United Kingdom, France, Australia, Italy, Brazil, Canada, Germany, India, the Netherlands and 29 more. Country and city lists for data center electrical contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “data center electrical contractors”. 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 data center electrical contractors), 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 data center electrical contractors, and records with no verified work email.
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, 69,510 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.

Data center electrical contractors by location

86 lists · largest first

Every Data center electrical 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 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 data center electrical contractors, 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 data center electrical contractors are there worldwide?

RevenueBase identified 26,069 data center electrical contractors worldwide 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?

IES Holdings, headquartered in Houston, tops this list with the largest team on record.

Which country has the most data center electrical contractors?

The United States leads with 8,608 companies, followed by the United Kingdom (2,725) and France (1,371). Every data center electrical contractors list by country and city is linked on this page.

Which city has the most data center electrical contractors?

Sao Paulo leads with 202 headquartered companies, followed by London (195) and Houston (144).

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 69,510 verified decision-maker contacts tracked across these 26,069 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.