Company lists · Data refreshed September 2026

Top 25 Atex certified electrical contractors worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 32,945 companies tracked

RevenueBase identified 32,945 company matches for atex certified electrical contractors worldwide as of September 2026 and tracks 288,702 professional contacts across them, including 68,979 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for atex certified electrical 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 September 30, 2026. Country and city lists for atex certified electrical 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 Sep 30, 2026 How this list was built

32,945Companies

288,702Contacts tracked

68,979Verified emails

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The 25 largest atex certified electrical contractors worldwide

Ranked by team size

Top 25 of 32,945 company matches for atex certified electrical contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	MMR Group	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
2	IES Holdings	Exact match	Houston, TX, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
3	Jones Engineering	Exact match	Dublin 4, IrelandHQ recorded Sep 30, 2026	1,001-5,000	2,415 contacts →
	Exact match “Jones Engineering is a multi-disciplined engineering contracting company, offering the complete range of engineering and building services installations.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Yates Construction	Exact match	Philadelphia, MS, United StatesHQ recorded Sep 30, 2026	5,001-10,000	1,713 contacts →
	Exact match “Yates Construction is part of The Yates Companies, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Helix Electric	Exact match	San Diego, CA, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
6	Bergelectric	Exact match	Carlsbad, CA, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
7	Walker Engineering	Exact match	Irving, TX, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
8	Engeko Engenharia E Construção Ltda	Exact match	São Paulo, BrazilHQ recorded Sep 30, 2026	1,001-5,000	1,036 contacts →
	Exact match “No mercado desde 2007, atuamos em todo território nacional com foco no segmento industrial e na construção de parcerias a longo prazo, oferecendo diversos tipos de soluções e…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	MSE Engenharia	Exact match	Londrina, BrazilHQ recorded Sep 30, 2026	201-500	826 contacts →
	Exact match “Com 46 anos de profundo know-how, adquirido através do atendimento aos mais diversos segmentos industriais, a MSE Engenharia é uma empresa que se orgulha de hoje ser completa em…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Elec-Tech Electrical Contractors	Exact match	Long Beach, CA, United StatesHQ recorded Sep 30, 2026	n/a	782 contacts →
	Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	BK Gulf LLC	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 30, 2026	5,001-10,000	774 contacts →
	Exact match “Established in 1978, BK Gulf LLC is a leading contractor in electrical, mechanical, instrumentation and building services within the UAE & Middle East market.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	PT Jaya Teknik Indonesia	Exact match	Jakarta, IndonesiaHQ recorded Sep 30, 2026	201-500	774 contacts →
	Exact match “Pt.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Sigma S.A. Chile	Exact match	Santiago, ChileHQ recorded Sep 30, 2026	201-500	757 contacts →
	Exact match “Somos una empresa de excelencia que desarrolla servicios integrales de Estudios Eléctricos, ingeniería, montaje industrial, geomensura, apoyo profesional, inspección técnica y…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Prism Electric	Exact match	Garland, TX, United StatesHQ recorded Sep 30, 2026	1,001-5,000	687 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 · Sep 30, 2026 · View company records in RevenueBase
15	Baker Group	Exact match	Ankeny, IA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	655 contacts →
	Exact match “Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	The Newtron Group	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	644 contacts →
	Exact match “The Newtron Group is one of the largest privately owned Specialty Industrial Construction companies in the United States and is among the nation's leading Industrial Electrical…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Cache Valley Electric	Exact match	Logan, UT, United StatesHQ recorded Sep 30, 2026	1,001-5,000	627 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 · Sep 30, 2026 · View company records in RevenueBase
18	M. J. Electric, LLC	Exact match	Iron Mountain, MI, United StatesHQ recorded Sep 30, 2026	1,001-5,000	621 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Rogers Electric	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	619 contacts →
	Exact match “Rogers Electric is the leading national service provider for all of your construction, rollouts, electrical, and lighting needs.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	PAR Electrical Contractors, LLC	Exact match	Kansas City, MO, United StatesHQ recorded Sep 30, 2026	1,001-5,000	606 contacts →
	Exact match “PAR, a Quanta Services company, offers a full range of construction services for substations, overhead and underground distribution and transmission lines, engineering, design…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Sep 30, 2026	501-1,000	597 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 · Sep 30, 2026 · View company records in RevenueBase
22	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	571 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 · Sep 30, 2026 · View company records in RevenueBase
23	CSI Electrical Contractors, INC	Exact match	Santa Fe Springs, CA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	560 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 · Sep 30, 2026 · View company records in RevenueBase
24	Nrgi Elcon	Exact match	Brabrand, DenmarkHQ recorded Sep 30, 2026	1,001-5,000	546 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 · Sep 30, 2026 · View company records in RevenueBase
25	Morrow-Meadows Corporation	Exact match	City Of Industry, CA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	532 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 · Sep 30, 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 “atex certified electrical 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 32,945 atex certified electrical contractors worldwide

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Atex certified electrical contractors worldwide at a glance

As of Sep 30, 2026

23.9%Verified-email coverage

8.8Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

16,294

11-50

11,324

51-200

3,766

201-500

756

501-1,000

206

1,001-5,000

136

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 atex certified electrical contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “atex certified electrical 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 68,979 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 30, 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.

Atex certified electrical contractors by location

90 lists · largest first

Every Atex certified 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 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 “atex certified electrical contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many atex certified electrical contractors are there worldwide?

RevenueBase identified 32,945 company matches for atex certified electrical contractors worldwide 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?

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

Which country has the most atex certified electrical contractors?

The United States leads with 8,817 companies, followed by the United Kingdom (3,987) and Australia (1,704). Every atex certified electrical contractors list by country and city is linked on this page.

Which city has the most atex certified electrical contractors?

London leads with 247 company records, followed by Sao Paulo (198) and Houston (146).

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 68,979 professional contacts with verified work emails tracked across these 32,945 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 30, 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.