Company lists · Data refreshed September 2026

Top 25 Electrical system design companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 37,895 companies tracked

RevenueBase identified 37,895 electrical system design companies worldwide as of September 2026 and tracks 383,808 professional contacts across them, including 104,659 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers electrical system design companies 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 19, 2026. Country and city lists for electrical system design companies 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 19, 2026 86% judged on-target in blind review

37,895Companies

383,808Contacts tracked

104,659Verified emails

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The 25 largest electrical system design companies worldwide

Ranked by team size

Top 25 of 37,895 electrical system design companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electrical system design companies: 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	Sargent & Lundy	Indirect evidence	Chicago, WY, United StatesHQ checked Sep 19, 2026	1,001-5,000	4,156 contacts →
	Indirect evidence “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Source: RevenueBase Database · checked Sep 19, 2026
2	IES Holdings	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 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 19, 2026
3	Enercon Services, INC	Indirect evidence	Kennesaw, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,865 contacts →
	Indirect 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 19, 2026
4	Shaker Consultancy Group	Partial evidence	Cairo, EgyptHQ checked Sep 19, 2026	1,001-5,000	1,833 contacts →
	Partial evidence “Since its founding in 1982, Shaker has established itself as one of the leading engineering and design firms across the MENA region, with offices in 8 countries and projects…” Source: RevenueBase Database · checked Sep 19, 2026
5	Engelmig Energia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	5,001-10,000	1,818 contacts →
	Indirect evidence “A Engelmig foi fundada em 1985 com o objetivo de prestar serviços de engenharia em redes de distribuição de energia elétrica.” Source: RevenueBase Database · checked Sep 19, 2026
6	Bowman Consulting	Indirect evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,666 contacts →
	Indirect evidence “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Source: RevenueBase Database · checked Sep 19, 2026
7	Helix Electric	Strong evidence	San Diego, CA, United StatesHQ checked Sep 19, 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 19, 2026
8	Kirby Group Engineering	Partial evidence	Limerick, IrelandHQ checked Sep 19, 2026	1,001-5,000	1,486 contacts →
	Partial 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 19, 2026
9	Control Construções Ltda	Indirect evidence	Joao Pessoa, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,337 contacts →
	Indirect evidence “Fundada em na cidade de João Pessoa, a empresa se tornou especialista nas áreas de construção e prestação de serviços no setor elétrico.” Source: RevenueBase Database · checked Sep 19, 2026
10	Bergelectric	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 19, 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 19, 2026
11	Hoare LEA	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	1,103 contacts →
	Partial evidence “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Source: RevenueBase Database · checked Sep 19, 2026
12	Henderson Engineers	Strong evidence	Lenexa, KS, United StatesHQ checked Sep 19, 2026	501-1,000	1,040 contacts →
	Strong evidence “Henderson Engineers is a national building systems design firm with a wide array of engineering services and a portfolio representing a full range of markets including business…” Source: RevenueBase Database · checked Sep 19, 2026
13	Affiliated Engineers, INC	Indirect evidence	Madison, WI, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,012 contacts →
	Indirect evidence “Affiliated Engineers, Inc.(AEI) provides engineering leadership and whole-mission solutions for complex building, energy, and utility projects.” Source: RevenueBase Database · checked Sep 19, 2026
14	Industrial Electric Mfg. IEM	Strong evidence	Fremont, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	969 contacts →
	Strong evidence “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
15	Mapa Group	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	10001+	959 contacts →
	Indirect evidence “Mapa Group has emerged as a global leader in the engineering and construction industry, now spanning three continents.” Source: RevenueBase Database · checked Sep 19, 2026
16	Mesa Associates, INC	Partial evidence	Madison, AL, United StatesHQ checked Sep 19, 2026	1,001-5,000	897 contacts →
	Partial evidence “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Source: RevenueBase Database · checked Sep 19, 2026
17	Anel Group	Partial evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	867 contacts →
	Partial evidence “Founded by Rıdvan Çelikel in 1986, Anel is a global contracting company with its expertise in MEP systems in large scale and challenging projects.” Source: RevenueBase Database · checked Sep 19, 2026
18	Hesco Engineering Services	Partial evidence	Jeddah, Saudi ArabiaHQ checked Sep 19, 2026	501-1,000	796 contacts →
	Partial evidence “Hesco is a design and engineering rm located in the Kingdom of Saudi Arabia with oces in Jeddah, Riyadh, Makkah, Syria, Turkey, Egypt, Spain and Lebanon.” Source: RevenueBase Database · checked Sep 19, 2026
19	Flanders	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 19, 2026	501-1,000	789 contacts →
	Indirect evidence “FLANDERS, Leverage our legacy.” Source: RevenueBase Database · checked Sep 19, 2026
20	Elec-Tech Electrical Contractors	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 19, 2026	n/a	782 contacts →
	Indirect evidence “WELCOME TO OUR WEBSITE!” Source: RevenueBase Database · checked Sep 19, 2026
21	BK Gulf LLC	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 19, 2026	5,001-10,000	774 contacts →
	Partial evidence “Established in 1978, BK Gulf LLC is a leading contractor in electrical, mechanical, instrumentation and building services within the UAE & Middle East market.” Source: RevenueBase Database · checked Sep 19, 2026
22	PAE	Strong evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	201-500	744 contacts →
	Strong evidence “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Source: RevenueBase Database · checked Sep 19, 2026
23	SASCO	Strong evidence	Fullerton, CA, United StatesHQ checked Sep 19, 2026	501-1,000	734 contacts →
	Strong evidence “SASCO has been a leader in electrical construction and low-voltage systems technologies for 50 years.” Source: RevenueBase Database · checked Sep 19, 2026
24	ME Engineers	Strong evidence	Golden, CO, United StatesHQ checked Sep 19, 2026	201-500	696 contacts →
	Strong evidence “ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Source: RevenueBase Database · checked Sep 19, 2026
25	SHBC	Indirect evidence	KuwaitHQ checked Sep 19, 2026	5,001-10,000	695 contacts →
	Indirect evidence “Construction companyCompany Overview SHBC is one of the leading construction companies in Kuwait.” Source: RevenueBase Database · checked Sep 19, 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: electrical system design companies. 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 electrical system design companies.
Partial evidence: Its own public description names part of electrical system design companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical system design companies. 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 37,895 electrical system design companies worldwide

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Electrical system design companies worldwide at a glance

As of Sep 19, 2026

27.3%Verified-email coverage

10.1Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

18,624

11-50

13,322

51-200

4,171

201-500

845

501-1,000

267

1,001-5,000

156

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 electrical system design companies, 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: Every country. Country and city lists for electrical system design companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “electrical system design companies”. 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 electrical system design companies), 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 electrical system design companies, 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, 104,659 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 19, 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.

Electrical system design companies by location

111 lists · largest first

Every Electrical system design companies 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 electrical system design companies, 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 electrical system design companies are there worldwide?

RevenueBase identified 37,895 electrical system design companies 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?

Sargent & Lundy, headquartered in Casper, tops this list with the largest team on record.

Which country has the most electrical system design companies?

The United States leads with 6,348 companies, followed by the United Kingdom (2,948) and Brazil (2,500). Every electrical system design companies list by country and city is linked on this page.

Which city has the most electrical system design companies?

Sao Paulo leads with 306 headquartered companies, followed by London (233) and Istanbul (189).

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 104,659 verified decision-maker contacts tracked across these 37,895 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 19, 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.