Company lists · Data refreshed September 2026

Top 25 Electrical system maintenance providers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 25,678 companies tracked

RevenueBase identified 25,678 electrical system maintenance providers worldwide as of September 2026 and tracks 165,384 professional contacts across them, including 33,690 with verified work emails. The United States is the largest market and London the largest hub.

This list covers electrical system maintenance providers 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 maintenance providers 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

25,678Companies

165,384Contacts tracked

33,690Verified emails

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The 25 largest electrical system maintenance providers worldwide

Ranked by team size

Top 25 of 25,678 electrical system maintenance providers 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 maintenance providers: 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	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
2	Sudhir Power LTD	Indirect evidence	Gurugram, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,036 contacts →
	Indirect evidence “Sudhir Power Limited, established in 1973, is a leader in Diesel Gensets, Transformers, PSS, HT & LT panels, and Equipment rental services.” Source: RevenueBase Database · checked Sep 19, 2026
3	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
4	Electric Power Systems	Strong evidence	Maryland Heights, MO, United StatesHQ checked Sep 19, 2026	501-1,000	653 contacts →
	Strong evidence “Electric Power Systems is an independent electrical testing & engineering organization.” Source: RevenueBase Database · checked Sep 19, 2026
5	Alterman, INC	Partial evidence	Live Oak, TX, United StatesHQ checked Sep 19, 2026	501-1,000	597 contacts →
	Partial evidence “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Source: RevenueBase Database · checked Sep 19, 2026
6	Temon Técnica DE Montagens E Construções	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	587 contacts →
	Indirect evidence “Desde 1978 atuando na execução de Instalações Elétricas e Hidráulicas, a Temon conseguiu firmar sua marca nesse mercado com participação em mais de obras por todo Brasil e…” Source: RevenueBase Database · checked Sep 19, 2026
7	Colonialwebb	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	571 contacts →
	Indirect evidence “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Source: RevenueBase Database · checked Sep 19, 2026
8	CSI Electrical Contractors, INC	Partial evidence	Santa Fe Springs, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	560 contacts →
	Partial evidence “Founded in 1990, CSI has become a leader in highly technical and innovative electrical design and construction.” Source: RevenueBase Database · checked Sep 19, 2026
9	Tata Consultancy Service TCS	Strong evidence	Nagpur, IndiaHQ checked Sep 19, 2026	51-200	550 contacts →
	Strong evidence “Tata Consultancy Service(TCS) Plumbing / Remodeling / Repair / Maintenance of residential electrical wiring maintenance services, electrical panel maintenance & lighting…” Source: RevenueBase Database · checked Sep 19, 2026
10	Nrgi Elcon	Partial evidence	Brabrand, DenmarkHQ checked Sep 19, 2026	1,001-5,000	546 contacts →
	Partial evidence “EL:CON is a solid, nationwide electrical installation company – both in regards to competences and economy.” Source: RevenueBase Database · checked Sep 19, 2026
11	Brunet	Indirect evidence	Chasseneuil-du-poitou, FranceHQ checked Sep 19, 2026	501-1,000	532 contacts →
	Indirect evidence “BRUNET, filiale du groupe ORTEC, cultive un savoir-faire multitechnique en travaux et en services dans les métiers du génie électrique, génie thermique et courant faible.” Source: RevenueBase Database · checked Sep 19, 2026
12	Hunt Electric	Strong evidence	Eagan, MN, United StatesHQ checked Sep 19, 2026	1,001-5,000	524 contacts →
	Strong evidence “Hunt Electric is a national electrical design, build, and maintenance firm based in Eagan, MN.” Source: RevenueBase Database · checked Sep 19, 2026
13	Resa Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	511 contacts →
	Indirect evidence “RESA Power is your ONE-STOP for all of your power needs.” Source: RevenueBase Database · checked Sep 19, 2026
14	Pieper Electric, INC	Partial evidence	New Berlin, WI, United StatesHQ checked Sep 19, 2026	501-1,000	498 contacts →
	Partial evidence “At Pieper Electric, Inc,"Our People Are Our Power" isn't just a phrase; it's our way of life.” Source: RevenueBase Database · checked Sep 19, 2026
15	EC Electric	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1,001-5,000	490 contacts →
	Indirect evidence “Our lives function on a power grid.” Source: RevenueBase Database · checked Sep 19, 2026
16	B. Tobace Instalações Elétricas E Telefônicas Ltda	Indirect evidence	Jaboticabal, BrazilHQ checked Sep 19, 2026	1,001-5,000	478 contacts →
	Indirect evidence “B.” Source: RevenueBase Database · checked Sep 19, 2026
17	ACE Electric, INC	Partial evidence	Valdosta, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	455 contacts →
	Partial evidence “Ace Electric is a family-owned/operated electrical contractor performing safe and high-quality work for clients throughout the United States.” Source: RevenueBase Database · checked Sep 19, 2026
18	E-J Electric Installation CO	Partial evidence	Long Island City, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	444 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
19	Concentric Power Services	Partial evidence	Carrollton, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	426 contacts →
	Partial evidence “Concentric is the first national industrial power services organization delivering forklift and critical power as well as maintenance solutions that ensure uninterrupted…” Source: RevenueBase Database · checked Sep 19, 2026
20	Shankar Electricals Services I Private Limited	Indirect evidence	Bangalore, IndiaHQ checked Sep 19, 2026	1,001-5,000	425 contacts →
	Indirect evidence “We are the leading MEP Contractor & Consultant with extensive knowledge in the Projects and O&M Services, having executed several Projects for fortune 500 companies and providing…” Source: RevenueBase Database · checked Sep 19, 2026
21	Guarantee Electrical Company	Strong evidence	Saint Louis, MO, United StatesHQ checked Sep 19, 2026	501-1,000	419 contacts →
	Strong evidence “A full-service electrical contractor since 1902, providing capability, performance, and legendary innovation in new construction, design-build, low-voltage systems, energy…” Source: RevenueBase Database · checked Sep 19, 2026
22	Quartzelec Limited	Partial evidence	Rugby, United KingdomHQ checked Sep 19, 2026	501-1,000	412 contacts →
	Partial evidence “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Source: RevenueBase Database · checked Sep 19, 2026
23	Strada Services	Partial evidence	Sanford, FL, United StatesHQ checked Sep 19, 2026	1,001-5,000	391 contacts →
	Partial evidence “Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…” Source: RevenueBase Database · checked Sep 19, 2026
24	Tereme Engenharia	Indirect evidence	Serra, BrazilHQ checked Sep 19, 2026	501-1,000	391 contacts →
	Indirect evidence “CONTRATOS DE MANUTENÇÃO A Tereme oferece a seus clientes soluções de manutenção global ou parcial dos equipamentos e instalações elétricas de uma planta industrial.” Source: RevenueBase Database · checked Sep 19, 2026
25	Canem Systems LTD	Strong evidence	Richmond, BC, CanadaHQ checked Sep 19, 2026	501-1,000	384 contacts →
	Strong evidence “Canem Systems is a leading full-service electrical and mechanical contractor, offering comprehensive services across Canada.” 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 maintenance providers. 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 maintenance providers.
Partial evidence: Its own public description names part of electrical system maintenance providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical system maintenance providers. 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 25,678 electrical system maintenance providers worldwide

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Electrical system maintenance providers worldwide at a glance

As of Sep 19, 2026

20.4%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

0.8%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

14,010

11-50

8,549

51-200

2,115

201-500

368

501-1,000

100

1,001-5,000

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 maintenance providers, 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 maintenance providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “electrical system maintenance providers”. 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 maintenance providers), 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 maintenance providers, 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, 33,690 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 maintenance providers by location

52 lists · largest first

Every Electrical system maintenance providers 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 maintenance providers, 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 maintenance providers are there worldwide?

RevenueBase identified 25,678 electrical system maintenance providers 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?

Engelmig Energia, headquartered in Belo Horizonte, tops this list with the largest team on record.

Which country has the most electrical system maintenance providers?

The United States leads with 5,116 companies, followed by the United Kingdom (3,225) and Italy (1,743). Every electrical system maintenance providers list by country and city is linked on this page.

Which city has the most electrical system maintenance providers?

London leads with 210 headquartered companies, followed by Sao Paulo (167) and Houston (91).

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 33,690 verified decision-maker contacts tracked across these 25,678 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.