Company lists · Data refreshed October 2026

Top 25 Electrical contractors for data centers worldwide

Name: Electrical contractors for data centers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 29,179 companies tracked

RevenueBase identified 29,179 company matches for electrical contractors for data centers worldwide as of October 2026 and tracks 378,166 professional contacts across them, including 104,041 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for electrical contractors for data centers 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 contractors for data centers 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

29,179Companies

378,166Contacts tracked

104,041Verified emails

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The 25 largest electrical contractors for data centers worldwide

Ranked by team size

Top 25 of 29,179 company matches for electrical contractors for data centers 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	Vertiv	Exact match	Columbus, OH, United StatesHQ recorded Oct 12, 2026	10001+	16,034 contacts →
	Exact match “Vertiv is a global leader in critical digital infrastructure for applications in data centers, communication networks, and commercial and industrial environments.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Rosendin	Exact match	San Jose, CA, United StatesHQ recorded Oct 12, 2026	10001+	4,695 contacts →
	Exact match “Since 1919, Rosendin has created a reputation for building quality electrical and communications installations, building value for clients, and building people.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	M.C. Dean, INC	Exact match	Tysons, VA, United StatesHQ recorded Oct 12, 2026	5,001-10,000	2,996 contacts →
	Exact match “M.C.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	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
5	Enercon Services, INC	Exact match	Kennesaw, GA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,980 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Quanta Services, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	10001+	1,901 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 · Oct 12, 2026 · View company records in RevenueBase
7	Grupo RCS	Exact match	Brasilia, BrazilHQ recorded Oct 12, 2026	5,001-10,000	1,870 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Engelmig Energia	Exact match	Belo Horizonte, BrazilHQ recorded Oct 12, 2026	5,001-10,000	1,854 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 · Oct 12, 2026 · View company records in RevenueBase
9	Cupertino Electric, INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,816 contacts →
	Exact match “Since 1954, Cupertino Electric, Inc.(CEI) has been powered by people who’ve built a reputation for delivering high-profile, complex projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Kemp & Lauritzen A S	Exact match	Albertslund, DenmarkHQ recorded Oct 12, 2026	1,001-5,000	1,634 contacts →
	Exact match “Kemp & Lauritzen arbejder med tekniske installationer med stor spændvidde og høj grad af specialisering.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	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
12	Kirby Group Engineering	Exact match	Limerick, IrelandHQ recorded Oct 12, 2026	1,001-5,000	1,518 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 · Oct 12, 2026 · View company records in RevenueBase
13	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
14	MJ Quinn	Exact match	Prescot, United KingdomHQ recorded Oct 12, 2026	1,001-5,000	1,287 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 · Oct 12, 2026 · View company records in RevenueBase
15	Industrial Electric Mfg. IEM	Exact match	Fremont, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,274 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 · Oct 12, 2026 · View company records in RevenueBase
16	H&mv Engineering	Exact match	Limerick, FranceHQ recorded Oct 12, 2026	1,001-5,000	1,269 contacts →
	Exact match “H & MV Engineering is a leading global provider of Specialist High Voltage Design, Engineering and Construction Services across a variety of key sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	J Brand LTD	Exact match	London, United KingdomHQ recorded Oct 12, 2026	n/a	1,256 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Bergelectric	Exact match	Carlsbad, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,210 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 · Oct 12, 2026 · View company records in RevenueBase
19	Walker Engineering	Exact match	Irving, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,124 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 · Oct 12, 2026 · View company records in RevenueBase
20	MYR Group	Exact match	Thornton, CO, United StatesHQ recorded Oct 12, 2026	5,001-10,000	1,111 contacts →
	Exact match “With roots dating to 1891 and employees, MYR Group Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Designer Group	Exact match	Dublin, IrelandHQ recorded Oct 12, 2026	1,001-5,000	937 contacts →
	Exact match “Designer Group is a leading Irish-owned engineering contractor delivering projects across Energy & Industrial, Data Centres and Building Services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Suir Engineering	Exact match	Waterford, GermanyHQ recorded Oct 12, 2026	1,001-5,000	908 contacts →
	Exact match “Suir Engineering, a trusted partner in excellence with over 40 years of international experience, specialises in electrical, mechanical, instrumentation and high voltage.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Winthrop Technologies	Exact match	Dublin, IrelandHQ recorded Oct 12, 2026	501-1,000	907 contacts →
	Exact match “Winthrop Technologies is a dedicated data centre delivery partner providing turnkey solutions to our clients, headquartered in Dublin and delivering throughout Europe.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Archkey Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Oct 12, 2026	1,001-5,000	880 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Westburne	Exact match	Mississauga, ON, CanadaHQ recorded Oct 12, 2026	1,001-5,000	852 contacts →
	Exact match “The Westburne story spans nearly a hundred years of evolution and growth.” 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 contractors for data centers”. 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 29,179 electrical contractors for data centers worldwide

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Electrical contractors for data centers worldwide at a glance

As of Oct 12, 2026

27.5%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

0.7%Largest-city concentration · Sao Paulo

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

13,374

11-50

10,667

51-200

3,643

201-500

763

501-1,000

231

1,001-5,000

161

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 contractors for data centers are linked below.
What qualifies: Company records worldwide whose business descriptions match “electrical contractors for data centers” 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 104,041 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 contractors for data centers by location

88 lists · largest first

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

How many electrical contractors for data centers are there worldwide?

RevenueBase identified 29,179 company matches for electrical contractors for data centers 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?

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

Which country has the most electrical contractors for data centers?

The United States leads with 8,153 companies, followed by the United Kingdom (2,538) and Brazil (1,251). Every electrical contractors for data centers list by country and city is linked on this page.

Which city has the most electrical contractors for data centers?

Sao Paulo leads with 197 company records, followed by London (166) and Houston (159).

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 104,041 professional contacts with verified work emails tracked across these 29,179 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.