Company lists · Data refreshed November 2026

Top 25 Electrical testing contractors worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 19,980 companies tracked

RevenueBase identified 19,980 company matches for electrical testing contractors worldwide as of November 2026 and tracks 166,244 professional contacts across them, including 40,463 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for electrical testing 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 testing 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

19,980Companies

166,244Contacts tracked

40,463Verified emails

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The 25 largest electrical testing contractors worldwide

Ranked by team size

Top 25 of 19,980 company matches for electrical testing 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	Socotec	Exact match	Guyancourt, FranceHQ recorded Nov 6, 2026	10001+	6,301 contacts →
	Exact match “SOCOTEC ranks in the Top 10 Best Workplaces® 2025 (category:>2500 employees) and is once again certified Great Place to Work® in 2025, across 18 countries!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	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
3	Kinectrics	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,395 contacts →
	Exact match “Kinectrics is an integrated lifecycle management services company providing testing, inspection, certification and engineering consulting for the electric power generation…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Shermco Industries	Exact match	Irving, OK, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,324 contacts →
	Exact match “Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Omicron Electronics	Exact match	Klaus, FranceHQ recorded Nov 6, 2026	1,001-5,000	937 contacts →
	Exact match “OMICRON is an international company that works passionately on ideas for making electric power systems safe and reliable.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Socotec UK & Ireland	Exact match	Burton Upon Trent, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	933 contacts →
	Exact match “SOCOTEC UK is a network of industry-leading experts we empower ambitious businesses at every stage of the asset lifecycle.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Sigma S.A. Chile	Exact match	Santiago, ChileHQ recorded Nov 6, 2026	201-500	833 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 · Nov 6, 2026 · View company records in RevenueBase
8	Elec-Tech Electrical Contractors	Exact match	Long Beach, CA, United StatesHQ recorded Nov 6, 2026	n/a	787 contacts →
	Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Prism Electric	Exact match	Garland, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	752 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 · Nov 6, 2026 · View company records in RevenueBase
10	Cache Valley Electric	Exact match	Logan, UT, United StatesHQ recorded Nov 6, 2026	1,001-5,000	691 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 · Nov 6, 2026 · View company records in RevenueBase
11	Electric Power Systems	Exact match	Maryland Heights, MI, United StatesHQ recorded Nov 6, 2026	501-1,000	678 contacts →
	Exact match “Electric Power Systems is an independent electrical testing & engineering organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Doble Engineering	Exact match	Marlborough, MA, United StatesHQ recorded Nov 6, 2026	501-1,000	662 contacts →
	Exact match “Doble is the world’s most trusted brand in electrical diagnostics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	632 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 · Nov 6, 2026 · View company records in RevenueBase
14	CSI Electrical Contractors, INC	Exact match	Santa Fe Springs, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	595 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 · Nov 6, 2026 · View company records in RevenueBase
15	Hunt Electric	Exact match	Eagan, MN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	572 contacts →
	Exact match “Hunt Electric is a national electrical design, build, and maintenance firm based in Eagan, MN.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Morrow-Meadows Corporation	Exact match	City Of Industry, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	567 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 · Nov 6, 2026 · View company records in RevenueBase
17	EC Electric	Exact match	Portland, OR, United StatesHQ recorded Nov 6, 2026	1,001-5,000	541 contacts →
	Exact match “Our lives function on a power grid.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Amteck, LLC	Exact match	Lexington, KY, United StatesHQ recorded Nov 6, 2026	501-1,000	506 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 · Nov 6, 2026 · View company records in RevenueBase
19	Socotec US	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	498 contacts →
	Exact match “Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	E-J Electric Installation CO	Exact match	Long Island City, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	495 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 · Nov 6, 2026 · View company records in RevenueBase
21	ACE Electric, INC	Exact match	Valdosta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	494 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 · Nov 6, 2026 · View company records in RevenueBase
22	Inglett & Stubbs	Exact match	Mableton, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	483 contacts →
	Exact match “Inglett & Stubbs LLC is a recognized leader in the electrical construction industry today.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Emitech Group	Exact match	Montigny Le Bretonneux, FranceHQ recorded Nov 6, 2026	501-1,000	471 contacts →
	Exact match “We provide global testing services for automotive, aeronautic & defence industries : we perform environmental, mechanical, EMC and electrical tests.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Quartzelec Limited	Exact match	Rugby, United KingdomHQ recorded Nov 6, 2026	501-1,000	456 contacts →
	Exact match “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Guarantee Electrical Company	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	501-1,000	453 contacts →
	Exact match “A full-service electrical contractor since 1902, providing capability, performance, and legendary innovation in new construction, design-build, low-voltage systems, energy…” 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 testing 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 19,980 electrical testing contractors worldwide

See the full list, filter by size, metro and specialty, and access 40,463 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical testing contractors worldwide at a glance

As of Nov 6, 2026

24.3%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11,037

11-50

6,116

51-200

1,712

201-500

340

501-1,000

1,001-5,000

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 testing contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “electrical testing 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 40,463 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 testing contractors by location

55 lists · largest first

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

How many electrical testing contractors are there worldwide?

RevenueBase identified 19,980 company matches for electrical testing 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?

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

Which country has the most electrical testing contractors?

The United States leads with 6,002 companies, followed by the United Kingdom (3,467) and Australia (1,144). Every electrical testing contractors list by country and city is linked on this page.

Which city has the most electrical testing contractors?

London leads with 238 company records, followed by Houston (94) and Sao Paulo (88).

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 40,463 professional contacts with verified work emails tracked across these 19,980 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.