CNAE 4221-9/02 · Rio de Janeiro (RJ)
Construction of electric power stations and distribution networks in Rio de Janeiro (RJ)
61 active companies are headquartered in Rio de Janeiro (RJ) with this CNAE as their main activity. They represent 2.6% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 2,355 · Rio de Janeiro 113
What this list shows
We count each active company once, by its head office in the city 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 Rio de Janeiro (RJ)
- 61
- 2.6% of Brazil's
- Of every 100 companies in Rio de Janeiro (RJ)
- 0.0
- do this activity
- Among Rio de Janeiro's cities
- 1st
- by companies in this activity
Active companies in Rio de Janeiro (RJ)
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 3- COBRA BRASIL SERVICOS, COMUNICACOES E ENERGIA S.A.Rio de Janeiro (RJ)
- COX CONSTRUCAO BRASIL LTDA.Rio de Janeiro (RJ)
- ELECNOR DO BRASIL LTDARio de Janeiro (RJ)
- CYMI DO BRASIL - PROJETOS E SERVICOS LTDARio de Janeiro (RJ)
- XPTT BRASIL CONSTRUCAO DE SISTEMAS DE ENERGIA ELETRICA LTDA.Rio de Janeiro (RJ)
- ETE CONSTRUCOES E MONTAGENS ELETRICAS LTDARio de Janeiro (RJ)
- PRODIEL NOVAMPER ENERGIAS RENOVAVEIS LTDARio de Janeiro (RJ)
- MYRTOS GERACAO DE ENERGIA S.A.Rio de Janeiro (RJ)
- CYMI CONSTRUCOES E PARTICIPACOES S.ARio de Janeiro (RJ)
- SHEMAR LATAM HOLDING LTDARio de Janeiro (RJ)
- ALTIS INFRA SUBTERRANEA LTDARio de Janeiro (RJ)
- GERA SOLAR GD LTDARio de Janeiro (RJ)
- ELECNOR AZULAO SPE LTDA.Rio de Janeiro (RJ)
- CONSORCIO SBEI - MENDES - SERVIXRio de Janeiro (RJ)
- COX BRASIL S.ARio de Janeiro (RJ)
- ARC CONSULTORIA EM ELETRICIDADE LTDARio de Janeiro (RJ)
- PROENERGY SERVICES DO BRASIL SERVICOS DE OPERACAO E MANUTENCAO LTDA.Rio de Janeiro (RJ)
- ALBERGO DEI PINI EMPREENDIMENTOS LTDA SCP SOLAR 6Rio de Janeiro (RJ)
- ALBERGO DEI PINI EMPREENDIMENTOS LTDA SCPRio de Janeiro (RJ)
- ALBERGO DEI PINI EMPREENDIMENTOS LTDA - SCPRio de Janeiro (RJ)
- COPENG - CONSULTORIA OBRA E PROJETOS DE ENGENHARIA LTDARio de Janeiro (RJ)
- ALBERGO DEI PINI EMPREENDIMENTOS LTDA -SCPRio de Janeiro (RJ)
- ALBERGO DEI PINI EMPREENDIMENTOS LTDA-SCPRio de Janeiro (RJ)
- ALBERGO DEI PINI EMPREENDIEMNTOS LTDA-SCPRio de Janeiro (RJ)
- ISASTUR BRASIL CONTRUCOES ELETRICAS LTDARio de Janeiro (RJ)
- ONIX SOLUCOES LTDA.Rio de Janeiro (RJ)
- NOVA ALIANCA MANUTENCAO EM TELECOMUNICACOES LTDARio de Janeiro (RJ)
- SELTRAN - SERVICOS ESPECIALIZADOS EM LINHAS DE TRANSMISSAO LTDARio de Janeiro (RJ)
- V2F ENGENHARIA LTDARio de Janeiro (RJ)
- ACR - ENERGIAS RENOVABLES LTDARio de Janeiro (RJ)
List limited to 61 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
- Rio de Janeiro (RJ)0.0
- Rio de Janeiro0.0
- Brazil0.0
In Rio de Janeiro (RJ), the activity weighs less than in Brazil.
Rio de Janeiro's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Rio de Janeiro 54.0% 61
- 2 Niterói 11.5% 13
- 3 Campos dos Goytacazes 8.0% 9
- 4 São Gonçalo 4.4% 5
- 5 Cabo Frio 1.8% 2
- 6 Duque de Caxias 1.8% 2
- 7 Itaocara 1.8% 2
- 8 Nova Iguaçu 1.8% 2
- 9 Petrópolis 1.8% 2
- 10 São João da Barra 1.8% 2
13 more cities
- 11 Guapimirim 1
- 12 Angra dos Reis 1
- 13 Itaperuna 1
- 14 Macaé 1
- 15 Magé 1
- 16 Maricá 1
- 17 Nilópolis 1
- 18 Nova Friburgo 1
- 19 Porciúncula 1
- 20 Rio Bonito 1
- 21 Santo Antônio de Pádua 1
- 22 Valença 1
- 23 Quissamã 1
Class 4221-9 in Rio de Janeiro (RJ)
obras para geração e distribuição de energia elétrica e para telecomunicações, by subclass| Subclass | Active |
|---|---|
| 4221-9/01 Construction of dams and reservoirs for electric power generation | 3 |
| 4221-9/02 Construction of electric power stations and distribution networks · this one | 61 |
| 4221-9/03 Maintenance of electric power distribution networks | 32 |
| 4221-9/04 Construction of telecommunication stations and networks | 44 |
| 4221-9/05 Maintenance of telecommunication stations and networks | 55 |
What activity 4221-9/02 is
- A construção de usinas, estações e subestações hidrelétricas, eólicas, nucleares, termoelétricas, etc.
- A construção de redes de transmissão e distribuição de energia elétrica, inclusive o serviço de eletrificação rural
- A construção de redes de eletrificação para ferrovias e metropolitanos
Frequently asked questions
How many companies have main CNAE 4221-9/02 in Rio de Janeiro (RJ)?
61 active companies have CNAE 4221-9/02 as their main activity in Rio de Janeiro (RJ), according to the Receita Federal's October 2026 publication. That is 0.0 of every 100 companies there, against 0.0 in Brazil.
Which of Rio de Janeiro's cities has the most companies in this activity?
Rio de Janeiro, with 61, 54.0% of the state's companies in this activity.
Why can this total differ from the companies operating in the city?
This scope counts active companies by their head office and registered main activity. A company may operate in the city 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 Rio de Janeiro (RJ).