Company lists · Data refreshed September 2026

Top 25 Electrical contractors for telecom based in Brazil

Name: Electrical contractors for telecom based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 1,559 companies tracked

RevenueBase identified 1,559 electrical contractors for telecom headquartered in Brazil as of September 2026 and tracks 41,525 professional contacts across them, including 2,323 with verified work emails. Sao Paulo is the largest hub.

This list covers electrical contractors for telecom headquartered in Brazil, 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 16, 2026.

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 16, 2026 86% judged on-target in blind review

1,559Companies

41,525Contacts tracked

2,323Verified emails

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The 25 largest electrical contractors for telecom based in Brazil

Ranked by team size

Top 25 of 1,559 electrical contractors for telecom based in Brazil, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to electrical contractors for telecom: 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	Serede	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 16, 2026	10001+	8,011 contacts →
	Partial evidence “A Serede é uma empresa prestadora de serviços de implantação e manutenção em redes de Telecom, fundada em 06 de agosto de 2007.” Source: RevenueBase Database · checked Sep 16, 2026
2	Engelmig Energia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 16, 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 16, 2026
3	Grupo RCS	Indirect evidence	Brasilia, BrazilHQ checked Sep 16, 2026	5,001-10,000	1,810 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
4	Araujo Abreu Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 16, 2026	1,001-5,000	1,788 contacts →
	Indirect evidence “A Araujo Abreu foi fundada em 1922.” Source: RevenueBase Database · checked Sep 16, 2026
5	Temon Técnica DE Montagens E Construções	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 16, 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 16, 2026
6	B. Tobace Instalações Elétricas E Telefônicas Ltda	Indirect evidence	Jaboticabal, BrazilHQ checked Sep 16, 2026	1,001-5,000	478 contacts →
	Indirect evidence “B.” Source: RevenueBase Database · checked Sep 16, 2026
7	STN Empreendimentos E Construções	Indirect evidence	Areal, BrazilHQ checked Sep 16, 2026	501-1,000	471 contacts →
	Indirect evidence “A STN EMPREENDIMENTOS E CONSTRUÇÕES atua há mais de 30 anos nas áreas de engenharia elétrica, de eletromecânica e de engenharia civil em todo território nacional.” Source: RevenueBase Database · checked Sep 16, 2026
8	Tereme Engenharia	Indirect evidence	Serra, BrazilHQ checked Sep 16, 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 16, 2026
9	Grupoorion	Indirect evidence	Brasilia, BrazilHQ checked Sep 16, 2026	201-500	350 contacts →
	Indirect evidence “A Orion, fundado há 30 anos, atua em diferentes segmentos de mercado, oferecendo soluções tecnológicas e serviços especializados de engenharia.” Source: RevenueBase Database · checked Sep 16, 2026
10	MA Eletromecânica	Indirect evidence	São Luís, BrazilHQ checked Sep 16, 2026	1,001-5,000	300 contacts →
	Indirect evidence “MA ELETROMECÂNICA, fundada em 1995 na cidade de São Luís do Maranhão, surgiu do sonho e empreendedorismo do engenheiro eletricista Marcleo Araújo, atual diretor.” Source: RevenueBase Database · checked Sep 16, 2026
11	Ultra Engenharia E Construções Ltda	Partial evidence	Belo Horizonte, BrazilHQ checked Sep 16, 2026	501-1,000	262 contacts →
	Partial evidence “A ULTRA ENERGIA LTDA é uma empresa de obras e serviços com atuação nos segmentos de Engenharia Elétrica, Eletrônica, Telecomunicações e Civil.” Source: RevenueBase Database · checked Sep 16, 2026
12	ELO Telecomunicações E Construções Ltda	Partial evidence	Aparecida De Goiania, BrazilHQ checked Sep 16, 2026	201-500	217 contacts →
	Partial evidence “A ELO Telecomunicações e Construções Ltda é uma empresa especializada na prestação de serviços de transmissão nos seus mais variados campos.” Source: RevenueBase Database · checked Sep 16, 2026
13	Grupo Energia	Indirect evidence	Castro, BrazilHQ checked Sep 16, 2026	501-1,000	136 contacts →
	Indirect evidence “O Grupo Energia iniciou suas atividades na década de 90 através da prestação de serviços elétricos em baixa tensão.” Source: RevenueBase Database · checked Sep 16, 2026
14	Novatec Instalações	Indirect evidence	São Paulo, BrazilHQ checked Sep 16, 2026	51-200	117 contacts →
	Indirect evidence “No mercado desde 2007, a Novatec trabalha diretamente com empresas da Construção Civil, Indústrias e Incorporadoras oferecendo serviços de Instalações Elétricas e Hidráulicas…” Source: RevenueBase Database · checked Sep 16, 2026
15	Nova Corrente	Partial evidence	Salvador, BrazilHQ checked Sep 16, 2026	201-500	111 contacts →
	Partial evidence “Somos a maior empresa brasileira no mercado de manutenção de telecomunicações, atuando também no segmento de energia.” Source: RevenueBase Database · checked Sep 16, 2026
16	MP Trafos Engenharia	Indirect evidence	Volta Redonda, BrazilHQ checked Sep 16, 2026	1,001-5,000	103 contacts →
	Indirect evidence “A MP Trafos Engenharia nasceu em 1993, na cidade de Pindamonhangaba, para atender a crescente demanda por manutenção industrial especializada.” Source: RevenueBase Database · checked Sep 16, 2026
17	Iosi Energia	Partial evidence	São Paulo, BrazilHQ checked Sep 16, 2026	51-200	100 contacts →
	Partial evidence “Com 25 anos de atuação no mercado, a Iosi Energia oferece serviços completos em engenharia elétrica, automação e telecomunicações, atendendo as principais demandas de usinas…” Source: RevenueBase Database · checked Sep 16, 2026
18	Coelho Tecnologia	Partial evidence	Canaã Dos Carajás, BrazilHQ checked Sep 16, 2026	n/a	99 contacts →
	Partial evidence “Coelho Tecnologia, empresa especializada em Projetos de Telecomunicações, Infra-estrutura de Cabeamento, Fibra-Ótica, Radio Enlace, Redes, Switch, Roteadores, Asterisk, MikroTik…” Source: RevenueBase Database · checked Sep 16, 2026
19	RCE Construções Elétricas	Indirect evidence	Itapira, BrazilHQ checked Sep 16, 2026	501-1,000	92 contacts →
	Indirect evidence “Responsabilidade e competência marcam a história da empresa RCE Construções Elétricas Eireli.” Source: RevenueBase Database · checked Sep 16, 2026
20	fundamentos.its	Partial evidence	São José Dos Campos, BrazilHQ checked Sep 16, 2026	51-200	81 contacts →
	Partial evidence “Founded on 1997 to offer IT solutions Fundamentos IT’s has expanded its activities by developing and implementing Telecommunication projects to many corporations all over the…” Source: RevenueBase Database · checked Sep 16, 2026
21	MMI Manutenção E Montagem Industrial Ltda	Indirect evidence	Serra, BrazilHQ checked Sep 16, 2026	51-200	77 contacts →
	Indirect evidence “Empresa fundada em iniciou suas atividades de fato em Junho de A partir deste marco então a MMI – Manutenção e Montagem Industrial Ltda, fez nome e fincou sua marca no mercado de…” Source: RevenueBase Database · checked Sep 16, 2026
22	Wiecheteck Engenharia Elétrica Ltda	Indirect evidence	Ponta Grossa, BrazilHQ checked Sep 16, 2026	201-500	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
23	Construtora Energia Ltda EPP	Indirect evidence	Luziânia, BrazilHQ checked Sep 16, 2026	201-500	60 contacts →
	Indirect evidence “Profissionais especializados em Rede Elétrica: Desde o projeto até a manutenção, oferecemos soluções abrangentes para redes elétricas de alta e baixa tensão, de 13,8 até 34,5 kv…” Source: RevenueBase Database · checked Sep 16, 2026
24	Martins TEC	Indirect evidence	Mesquita, BrazilHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “Criada a partir de serviços de infraestrutura para os fabricantes de equipamentos, a Martinstec ergue-se sobre seu legado de confiabilidade e excelência.” Source: RevenueBase Database · checked Sep 16, 2026
25	MP Engenharia Elétrica	Indirect evidence	Piracicaba, BrazilHQ checked Sep 16, 2026	51-200	53 contacts →
	Indirect evidence “Instalações elétricas / Manutenção elétrica / Projetos elétricos / Análises e Ensaios / SPDA / Termografia / Retrofit / Montagens industriais / Automação / Treinamentos” Source: RevenueBase Database · checked Sep 16, 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 contractors for telecom. 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 contractors for telecom.
Partial evidence: Its own public description names part of electrical contractors for telecom, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical contractors for telecom. 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 1,559 electrical contractors for telecom based in Brazil

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Electrical contractors for telecom based in Brazil at a glance

As of Sep 16, 2026

5.6%Verified-email coverage

26.6Average contacts per company

1-10Median size (employees)

16.1%Largest-city concentration · Sao Paulo

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

797

11-50

532

51-200

156

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 1,559 companies.

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 contractors for telecom, 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.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “electrical contractors for telecom”. 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 contractors for telecom), 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 contractors for telecom, and records with no verified work email. Companies headquartered outside Brazil are excluded even when they keep an office there.
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, 2,323 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 16, 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 contractors for telecom by metro

Electrical contractors for telecom in Sao Paulo251
Electrical contractors for telecom in Rio De Janeiro73
Electrical contractors for telecom in Belo Horizonte58
Electrical contractors for telecom in Curitiba42
Electrical contractors for telecom in Guarulhos27
Electrical contractors for telecom in Goiania25

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 contractors for telecom, 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 contractors for telecom are there based in Brazil?

RevenueBase identified 1,559 electrical contractors for telecom headquartered in Brazil 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?

Serede, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which city has the most electrical contractors for telecom?

Sao Paulo leads with 251 headquartered companies, followed by Rio De Janeiro (73) and Belo Horizonte (58).

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 2,323 verified decision-maker contacts tracked across these 1,559 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 16, 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.