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CNAE 4221-9/02 · Brazil

Construção de estações e redes de distribuição de energia elétrica

2,355 active companies in the Brazilian CNPJ registry have this CNAE as their main activity. Look up companies and explore their distribution by state and city.

Source: Receita Federal, CNPJ Open Data · October 2026 publication

What this list shows

We count each active company in the Brazilian CNPJ registry once, by its head office 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.

Active companies
2,355
569th of 1,329 activities
Opened in 12 months
137
−9.3% · 657th by openings
Of every 100 companies in the country
0.0
do this activity
Openings per 100 active
6
in the country: 21

Active companies in this activity

More active establishments and higher registered capital first. This order is not a quality assessment or recommendation.

Look up companies in this activity (up to 300)

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.

Where the companies are

Acre: 9 companies, 0.0 of every 100 active companies there Alagoas: 16 companies, 0.0 of every 100 active companies there Amapá: 0 companies, 0.0 of every 100 active companies there Amazonas: 12 companies, 0.0 of every 100 active companies there Bahia: 145 companies, 0.0 of every 100 active companies there Ceará: 123 companies, 0.0 of every 100 active companies there Distrito Federal: 73 companies, 0.0 of every 100 active companies there Espírito Santo: 31 companies, 0.0 of every 100 active companies there Goiás: 168 companies, 0.0 of every 100 active companies there Maranhão: 48 companies, 0.0 of every 100 active companies there Mato Grosso: 99 companies, 0.0 of every 100 active companies there Mato Grosso do Sul: 48 companies, 0.0 of every 100 active companies there Minas Gerais: 271 companies, 0.0 of every 100 active companies there Pará: 110 companies, 0.0 of every 100 active companies there Paraíba: 33 companies, 0.0 of every 100 active companies there Paraná: 210 companies, 0.0 of every 100 active companies there Pernambuco: 45 companies, 0.0 of every 100 active companies there Piauí: 73 companies, 0.0 of every 100 active companies there Rio de Janeiro: 113 companies, 0.0 of every 100 active companies there Rio Grande do Norte: 38 companies, 0.0 of every 100 active companies there Rio Grande do Sul: 160 companies, 0.0 of every 100 active companies there Rondônia: 29 companies, 0.0 of every 100 active companies there Roraima: 14 companies, 0.0 of every 100 active companies there Santa Catarina: 129 companies, 0.0 of every 100 active companies there São Paulo: 261 companies, 0.0 of every 100 active companies there Sergipe: 11 companies, 0.0 of every 100 active companies there Tocantins: 51 companies, 0.0 of every 100 active companies there

Weight in each federative unit: of every 100 active companies, how many have this main activity

  1. 0.0
  2. 0.0
  3. 0.0
  4. 0.0
  5. 0.0

Federative units with the most companies

  1. 1 Minas Gerais 271
  2. 2 São Paulo 261
  3. 3 Paraná 210
  4. 4 Goiás 168
  5. 5 Rio Grande do Sul 160
  6. 6 Bahia 145
  7. 7 Santa Catarina 129
  8. 8 Ceará 123
  9. 9 Rio de Janeiro 113
  10. 10 Pará 110
See the 26 federative units
  1. 11 Mato Grosso 99
  2. 12 Distrito Federal 73
  3. 13 Piauí 73
  4. 14 Tocantins 51
  5. 15 Maranhão 48
  6. 16 Mato Grosso do Sul 48
  7. 17 Pernambuco 45
  8. 18 Rio Grande do Norte 38
  9. 19 Paraíba 33
  10. 20 Espírito Santo 31
  11. 21 Rondônia 29
  12. 22 Alagoas 16
  13. 23 Roraima 14
  14. 24 Amazonas 12
  15. 25 Sergipe 11
  16. 26 Acre 9

Cities with the most companies

active companies by head office

  1. 1 São Paulo (SP) 86
  2. 2 Brasília (DF) 73
  3. 3 Belo Horizonte (MG) 71
  4. 4 Fortaleza (CE) 70
  5. 5 Rio de Janeiro (RJ) 61
  6. 6 Goiânia (GO) 60
  7. 7 Curitiba (PR) 55
  8. 8 Teresina (PI) 37
  9. 9 Aparecida de Goiânia (GO) 35
  10. 10 Maringá (PR) 31
See the 29 cities
  1. 11 Cuiabá (MT) 29
  2. 12 Palmas (TO) 25
  3. 13 Porto Alegre (RS) 24
  4. 14 Belém (PA) 23
  5. 15 Salvador (BA) 22
  6. 16 Colombo (PR) 18
  7. 17 Campo Grande (MS) 18
  8. 18 São Luís (MA) 17
  9. 19 Natal (RN) 17
  10. 20 Recife (PE) 17
  11. 21 Contagem (MG) 16
  12. 22 Boa Vista (RR) 14
  13. 23 Picos (PI) 14
  14. 24 Florianópolis (SC) 14
  15. 25 Niterói (RJ) 13
  16. 26 Vitória da Conquista (BA) 12
  17. 27 Pinhais (PR) 12
  18. 28 São José do Rio Preto (SP) 12
  19. 29 Dourados (MS) 12

What activity 4221-9/02 is

  1. Section F — Construção
  2. Division — Obras de infra-estrutura
  3. Group — Obras de infra-estrutura para energia elétrica, telecomunicações, água, esgoto e transporte por dutos
  4. Class — Obras para geração e distribuição de energia elétrica e para telecomunicações

What it covers

  • 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

What it does not cover

  • A manutenção de redes de eletricidade quando executada por empresas de produção e distribuição de energia elétrica (grupo 35.1)

Typical activities

  • Construção de obras para geração de energia elétrica através do aproveitamento de energia das marés (energia maremotriz)
  • Construção de usinas eólicas
  • Construção de usinas nucleares
  • Construção de usinas solares fotovoltaicas
  • Construção de usinas termelétricas
  • Estação central (planta de eletricidade), construção de
  • Estações de forca e luz, construção de
  • Estações de geração de energia elétrica, construção de
  • Estações de transmissão de energia elétrica, construção de
  • Estações e redes de distribuição de energia elétrica, construção de
  • Estruturas para reatores nucleares, construção de
  • Linhas de transmissão de energia elétrica, instalação de
See the other 10 typical activities
  • Plantas de geração de energia elétrica, construção de
  • Plantas hidrelétricas, construção de
  • Plantas nucleares, construção de
  • Redes de eletrificação para ferrovias e metropolitanos, construção de
  • Redes de transmissão de energia elétrica, construção de
  • Redes de transmissão e distribuição de energia elétrica, construção de
  • Serviço de eletrificação rural
  • Sistema de produção e distribuição de energia elétrica, construção de
  • Subestações: eólicas, hidrelétricas, nucleares, termelétricas, construção de
  • Usinas hidrelétricas, construção de

Source: IBGE, CNAE 2.3 and its explanatory notes

The activities of class 4221-9

obras para geração e distribuição de energia elétrica e para telecomunicações, by subclass
SubclassActiveOpeningsChange
4221-9/01 Construção de barragens e represas para geração de energia elétrica20212—
4221-9/02 Construção de estações e redes de distribuição de energia elétrica · this one2,355137−9.3%
4221-9/03 Manutenção de redes de distribuição de energia elétrica1,18097−16.4%
4221-9/04 Construção de estações e redes de telecomunicações1,316121−15.4%
4221-9/05 Manutenção de estações e redes de telecomunicações1,458196+3.2%

Frequently asked questions about CNAE 4221-9/02

How many CNAE 4221-9/02 companies are there in Brazil?

2,355 active companies have CNAE 4221-9/02 as their main activity, according to the Receita Federal's October 2026 publication. It is 569th among the country's activities by companies.

Which activities make up class 4221-9?

Class 4221-9 has 5 subclasses: 4221-9/01; 4221-9/02; 4221-9/03; 4221-9/04; 4221-9/05. The official names are in the subclass table. A company declares one main activity and may declare others as secondary activities.

Which federative unit has the most companies in this activity?

Minas Gerais, with 271. There, 0.0 of every 100 active companies have this main activity, against 0.0 in the national registry.

Does this total include branches and secondary activities?

No. Each active company is counted once, by its head office and registered main activity. A company may carry out this activity as a secondary activity and be excluded from the count. Geographic distribution uses the registered location; records without a recognized federative unit may be counted nationally without appearing in local groups.

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 in the Brazilian CNPJ registry with this as their main activity, counted once by head office. Location is taken from the registry. Where available, openings are for the last 12 months, compared with the previous 12 months.