Company lists · Data refreshed September 2026

Top 25 Backup generator installation companies based in Brazil

Name: Backup generator installation companies based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 229 companies tracked

RevenueBase identified 229 backup generator installation companies headquartered in Brazil as of September 2026 and tracks 2,741 professional contacts across them, including 405 with verified work emails. Sao Paulo is the largest hub.

This list covers backup generator installation companies 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 19, 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 19, 2026 86% judged on-target in blind review

229Companies

2,741Contacts tracked

405Verified emails

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The 25 largest backup generator installation companies based in Brazil

Ranked by team size

Top 25 of 229 backup generator installation companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to backup generator installation 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	Stemac	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 19, 2026	1,001-5,000	849 contacts →
	Indirect evidence “Líder nacional na fabricação e comercialização de grupos geradores, a STEMAC projeta e executa soluções em energia através da maior estrutura de atendimento, com 38 filiais…” Source: RevenueBase Database · checked Sep 19, 2026
2	Energ Geradores	Indirect evidence	São Bernardo Do Campo, BrazilHQ checked Sep 19, 2026	51-200	183 contacts →
	Indirect evidence “A ENERG Geradores atua desde 2003 oferecendo soluções completas em segurança energética para operações onde falhar não é uma opção.” Source: RevenueBase Database · checked Sep 19, 2026
3	BRG Brasil Geradores	Indirect evidence	Anápolis, BrazilHQ checked Sep 19, 2026	201-500	160 contacts →
	Indirect evidence “Há mais de 20 anos de mercado com experiência em fabricação e instalação de Grupos Geradores.” Source: RevenueBase Database · checked Sep 19, 2026
4	Sblok Geradores	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	51-200	121 contacts →
	Indirect evidence “A SBLOK fornece soluções temporárias de geração de energia com a rapidez que o seu negócio precisa.” Source: RevenueBase Database · checked Sep 19, 2026
5	Stemac SA Grupos Geradores	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 19, 2026	1,001-5,000	91 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
6	MIL Geradores	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	51-200	82 contacts →
	Indirect evidence “Com expertise mais de 30 anos de mercado, um de seus principais diferenciais é a agilidade em atender as demandas dos clientes de forma simples e sem burocracia.” Source: RevenueBase Database · checked Sep 19, 2026
7	Gera Center	Indirect evidence	Cotia, BrazilHQ checked Sep 19, 2026	51-200	44 contacts →
	Indirect evidence “A Gera Center iniciou suas atividades em agosto de 1991, em São Paulo, atuando no ramo de locação de grupos geradores.” Source: RevenueBase Database · checked Sep 19, 2026
8	Prime Geradores	Indirect evidence	São Bernardo Do Campo, BrazilHQ checked Sep 19, 2026	51-200	35 contacts →
	Indirect evidence “A Prime Geradores é reconhecida nacionalmente pela excelência em Soluções Temporárias em Energia, com uma trajetória sólida de mais de 18 anos oferecendo confiança, eficiência e…” Source: RevenueBase Database · checked Sep 19, 2026
9	Arpex Engenharia	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “Empresa de engenharia que atua nas áreas de prestação de serviço, treinamento, manutenção de grupos geradores, manutenção de motores marítimos e industriais, automação e…” Source: RevenueBase Database · checked Sep 19, 2026
10	Grupo Gera Energia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “O GRUPO GERA ENERGIA foi fundado por profissionais experientes com mais de 30 anos no mercado na área de geração e distribuição de energia.” Source: RevenueBase Database · checked Sep 19, 2026
11	R7 Geradores	Indirect evidence	Vila Velha, BrazilHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “A R7 Geradores é uma empresa,genuinamente capixaba, com sede em Vila Velha,ES.” Source: RevenueBase Database · checked Sep 19, 2026
12	Ricardo Dinelli	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	1-10	18 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
13	Epse Energia	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Na EPSE, nosso objetivo é transformar sua visão em energia de forma eficiente, segura e inovadora.” Source: RevenueBase Database · checked Sep 19, 2026
14	GEN & Energy	Indirect evidence	Guarulhos, BrazilHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “A Gen & Energy é uma empresa especializada em soluções completas em energia, com foco na instalação, venda e manutenção de grupos geradores.” Source: RevenueBase Database · checked Sep 19, 2026
15	SOTEC	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Especialista em geração e manutenção de energia elétrica, a Sotec vende e realiza a manutenção multimarcas de no-breaks, geradores, baterias e infraestrutura.” Source: RevenueBase Database · checked Sep 19, 2026
16	ATG Geradores	Indirect evidence	Santo André, BrazilHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “ATG Geradores \|+25 anos de excelência em soluções energéticas Desde a ATG Geradores é referência no mercado de locação e manutenção de geradores, garantindo o fornecimento de…” Source: RevenueBase Database · checked Sep 19, 2026
17	AMZ Geradores	Indirect evidence	Manaus, BrazilHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “Empresa especializada no fornecimento de grupos geradores e soluções customizadas de geração de energia elétrica com sede no Amazonas, São Paulo e Santa Catarina.” Source: RevenueBase Database · checked Sep 19, 2026
18	VMP Soluções EM Energia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “A VMP Soluções em Energia, iniciou suas atividades em 1992, com o intuito de atender com excelência clientes corporativos.” Source: RevenueBase Database · checked Sep 19, 2026
19	Grupo VIA Energia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Ao longo dos mais de 15 anos de experiência profissional na área de energia, os idealizadores do Grupo Via Energia perceberam uma carência de empresas que gerenciassem os serviços…” Source: RevenueBase Database · checked Sep 19, 2026
20	Unigera Soluções EM Energia	Indirect evidence	São Caetano Do Sul, BrazilHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “A Unigera empresa fundada em São Caetano do Sul-SP nasce em função da necessidade em oferecer aos clientes bom atendimento e soluções voltadas para vendas de Geradores a Diesel e…” Source: RevenueBase Database · checked Sep 19, 2026
21	Vitormac Grupos Geradores	Indirect evidence	Gravataí, BrazilHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Fundada no ano de 2010, a Vitormac é uma empresa especializada no segmento de geração de energia, oferecendo as mais diversas soluções, tais como: fornecimento de equipamentos…” Source: RevenueBase Database · checked Sep 19, 2026
22	Edda Energia - GTD	Indirect evidence	Jundiaí, BrazilHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Fabricação de Grupo Moto-Geradores - GMG, Manutenção Elétrica Industrial, Sistema Fotovoltaico - venda e manutenção, Soluções para Geração, Transmissão e Distribuição de Energia.” Source: RevenueBase Database · checked Sep 19, 2026
23	Portugal Geradores	Indirect evidence	Feira De Santana, BrazilHQ checked Sep 19, 2026	51-200	6 contacts →
	Indirect evidence “Atendimento 24h:(77) E-mail: bernardo@portugalgeradores.com.br A Portugal Geradores é uma empresa que tem mais de 25 anos levando soluções em geração de energia.” Source: RevenueBase Database · checked Sep 19, 2026
24	Grupo Energe	Indirect evidence	Campo Grande, BrazilHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “O Grupo Energe entrega energia para operações que não podem parar: indústria, agroindústria, mineração, data center, obras de infraestrutura, serviços essenciais e grandes eventos.” Source: RevenueBase Database · checked Sep 19, 2026
25	M.A.S Nobreak	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “As melhores soluções em energia para o seu negócio!” 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: backup generator installation 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 backup generator installation companies.
Partial evidence: Its own public description names part of backup generator installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name backup generator installation 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 229 backup generator installation companies based in Brazil

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Backup generator installation companies based in Brazil at a glance

As of Sep 19, 2026

14.8%Verified-email coverage

12.0Average contacts per company

1-10Median size (employees)

18.3%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

116

11-50

51-200

201-500

1,001-5,000

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 229 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 backup generator installation 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.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “backup generator installation 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 backup generator installation 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 backup generator installation companies, 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, 405 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.

Backup generator installation companies by metro

Backup generator installation companies in Sao Paulo42

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 backup generator installation 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 backup generator installation companies are there based in Brazil?

RevenueBase identified 229 backup generator installation companies 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?

Stemac, headquartered in Porto Alegre, tops this list with the largest team on record.

Which city has the most backup generator installation companies?

Sao Paulo leads with 42 headquartered companies, followed by Sao Bernardo Do Campo (17) and Rio De Janeiro (14).

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 405 verified decision-maker contacts tracked across these 229 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.