CNAE 4321-5/00 · Rondônia
Electrical installation and maintenance in Rondônia
2,388 active companies are headquartered in Rondônia with this CNAE as their main activity. They represent 0.7% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 328,370
What this list shows
We count each active company once, by its head office in this state and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.
- Companies in Rondônia
- 2,388
- 0.7% of Brazil's
- Of every 100 companies in Rondônia
- 1.5
- do this activity
- Among Brazil's federative units
- 22nd
- by companies in this activity
Active companies in Rondônia
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 8 of 10- MR ELECTRICO SOLUTIONS LTDACandeias do Jamari (RO)
- C R B DIGITAL SAT - SERVICOS DE INSTALACOES DE EQUIPAMENTOS DE INTERNET RURAL LTDAPorto Velho (RO)
- GLB CONSULTORIA PROJETOS E SERVICOS ELETRICOS LTDARolim de Moura (RO)
- SB TECH INSTALACOES E MANUTENCAO LTDAVilhena (RO)
- CM LS MANUTENCAO E INSTALACAO ELETRICA LTDAPorto Velho (RO)
- CRUZ DOS SANTOS SERVICOS LTDAPorto Velho (RO)
- MEGA NORTE SOLAR LTDAJi-Paraná (RO)
- ARS E GARCIA SERVICOS ELETRICOS LTDAAriquemes (RO)
- WDR SEGURANCA ELETRONICA LTDAPorto Velho (RO)
- L J SERVICOS E PARTICIPACOES LTDAVilhena (RO)
- BRANQUINHO SOLAR LTDAPorto Velho (RO)
- R D SOLUCOES ENERGETICAS LTDASão Miguel do Guaporé (RO)
- CBL - BACK LINE INSTALACAO ELETRICA E SONORIZACAO LTDAPorto Velho (RO)
- APOLLO ENERGIA SOLAR LTDACacoal (RO)
- J A CONSTRUCOES E SERVICOS LTDAJi-Paraná (RO)
- A&R ELETRICA E INSTALACAO LTDAVilhena (RO)
- ALESSANDRO DIAS CARNOSKI LTDAPorto Velho (RO)
- MR SOLAR SOLUCOES SUSTENTAVEIS LTDANova Brasilândia D'Oeste (RO)
- AVIVA ENERGIA SOLAR LTDAJaru (RO)
- ZDN SOLUCOES EM AUTOMACAO LTDAJaru (RO)
- ATHENA COMERCIO E REPRESENTACAO DE ENERGIA SOLAR LTDARolim de Moura (RO)
- SOL VOLTS ENERGIA SOLAR LTDAJaru (RO)
- ECO ENERGY ENERGIA SOLAR LTDAVilhena (RO)
- RIZZO ENERGIA SOLAR LTDAVale do Anari (RO)
- A MARTINS DA COSTA LTDAMachadinho D'Oeste (RO)
- H S SOLAR INSTALACAO E MANUTENCAO LTDAPorto Velho (RO)
- ANKORE ENGENHARIA E ENERGIA SOLAR LTDACosta Marques (RO)
- LC CONSTRUTORA E SERVICOS ELETRICOS LTDAJi-Paraná (RO)
- MAGE ENGENHARIA LTDAPorto Velho (RO)
- MMS COMERCIO E SOLUCOES ELETRICAS LTDACacoal (RO)
List limited to 300 companies, 30 per page. Looking for a specific company? Search by name or CNPJ.
How to assess a company's data
When you open a company's record, use these guides to check the data and understand what each field can establish.
- How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
- What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
- How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.
How much the activity weighs
of every 100 active companies, how many do this activity
- Rondônia1.5
- Brazil1.2
In Rondônia, the activity weighs 1.2 times what it does in Brazil.
Rondônia's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Porto Velho 32.8% 783
- 2 Ji-Paraná 12.1% 288
- 3 Vilhena 8.8% 209
- 4 Cacoal 7.7% 184
- 5 Ariquemes 7.4% 177
- 6 Rolim de Moura 4.8% 115
- 7 Jaru 2.8% 67
- 8 Pimenta Bueno 2.6% 63
- 9 Ouro Preto do Oeste 2.4% 57
- 10 Buritis 1.7% 40
20 more cities
- 11 Guajará-Mirim 36
- 12 São Miguel do Guaporé 29
- 13 Espigão D'Oeste 27
- 14 Alta Floresta D'Oeste 26
- 15 Colorado do Oeste 24
- 16 Cerejeiras 24
- 17 Machadinho D'Oeste 24
- 18 São Francisco do Guaporé 23
- 19 Nova Brasilândia D'Oeste 22
- 20 Candeias do Jamari 21
- 21 Presidente Médici 18
- 22 Alto Paraíso 12
- 23 Urupá 10
- 24 Cujubim 9
- 25 Mirante da Serra 9
- 26 Chupinguaia 8
- 27 Nova Mamoré 8
- 28 Monte Negro 7
- 29 Seringueiras 7
- 30 Vale do Anari 6
Class 4321-5 in Rondônia
instalações elétricas, by subclassClose to this: 8020-0/01 · Monitoring of electronic security systems, 106 companies in Rondônia.
What activity 4321-5/00 is
- A instalação, alteração, manutenção e reparo em todos os tipos de construções de: #- sistemas de eletricidade (cabos de qualquer tensão, fiação, materiais elétricos, etc.) #- cabos para instalações telefônicas e de comunicações #- cabos para redes de informática e televisão a cabo, inclusive por fibra óptica #- antenas coletivas e parabólicas #- pára-raios #- sistemas de iluminação #- sistemas de alarme contra incêndio #- sistemas de alarme contra roubo #- sistemas de controle eletrônico e automação predial
- A instalação de equipamentos elétricos para aquecimento
Frequently asked questions
How many companies have main CNAE 4321-5/00 in Rondônia?
2,388 active companies have CNAE 4321-5/00 as their main activity in Rondônia, according to the Receita Federal's October 2026 publication. That is 1.5 of every 100 companies there, against 1.2 in Brazil.
Which of Rondônia's cities has the most companies in this activity?
Porto Velho, with 783, 32.8% of the state's companies in this activity.
Why can this total differ from the companies operating in this state?
This scope counts active companies by their head office and registered main activity. A company may operate in this state through a branch or carry out the activity as a secondary activity and be excluded from the count. The registered address and CNAE do not establish every operating location or service.
Does active status mean a company is qualified for a contract?
No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.
How we count
Active companies with this as their main activity, counted by head office in Rondônia.