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Top 42 energy companies in Rio de Janeiro State

Tamtam tracks 42 energy companies headquartered in Rio de Janeiro State. This list ranks all of them by number of employees on LinkedIn, led by Vale, Petrobras and Neoenergia S.A.. Their median headcount is 1,826. Half of them were founded in 1995 or later. The most common headquarters are Rio de Janeiro (35), Macaé (3) and Niterói (2).

🇧🇷 Rio de Janeiro State42 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Valevale.com

A global mining company focused on producing iron ore, pellets, and nickel with a commitment to safety, sustainability, and innovation

Mining 🇧🇷 Rio de Janeiro 71,933 n/a
2
Petrobraspetrobras.com.br

The company aims to provide ethical, safe, and competitive energy solutions while focusing on sustainability, environmental responsibility, and employee well-being

Oil and Gas 🇧🇷 Rio de Janeiro 56,267 n/a
3
Neoenergia S.A.neoenergia.com

Open capital company, Brazilian electricity sector leader. Operations span generation, transmission, distribution, and commercialization, serving 16 million customers across 18 states.

Utilities 🇧🇷 Rio de Janeiro 16,000 1997
4
Eletrobraseletrobras.com

Generation, transmission, commercialization, and energy efficiency programs; electric sector leader in Latin America, clean and renewable energy matrix.

Oil and Gas 🇧🇷 Rio de Janeiro 13,000 1962
5
Ipirangaipiranga.com.br

Provider of quality fuels and services for industry, transportation, and logistics in Brazil, focusing on customer relationships, innovation, and sustainability initiatives

Retail 🇧🇷 Rio de Janeiro 8,612 n/a
6
Lightlight.com.br

Provides essential energy distribution, generation, and services to over 10 million people in 31 municipalities in the state of Rio de Janeiro, Brazil.

Utilities 🇧🇷 Rio de Janeiro 7,516 1905
7
Vibravibraenergia.com.br

Largest multienergy platform in the country, leading in fuel distribution, licensed to operate Petrobras and BR Aviation brands.

Wholesale Petroleum and Petroleum Products 🇧🇷 Rio de Janeiro 6,425 1971
8
Transpetro - Petrobras Transporte S. A.transpetro.com.br

Provider of logistics solutions for the oil and gas industry, operating terminals, pipelines, ships, and storage facilities for oil, derivatives, and biofuels

Transportation, Logistics, Supply Chain and Storage 🇧🇷 Rio de Janeiro 5,169 1998
9
Supergasbras Energia Ltdasupergasbras.com.br

We are a leading distributor of LP Gas in Brazil, providing customized energy solutions to households and businesses, with a focus on quality, safety, and environmental sustainability

Oil and Gas 🇧🇷 Rio de Janeiro 4,857 n/a
10
Elecnor do Brasilelecnor.com.br

Global engineering and construction firm with a focus on infrastructure projects, renewable energy, and environmental initiatives, operating in 53 countries worldwide

Construction 🇧🇷 Rio de Janeiro 3,720 1979
11
Gran Services S.A.granihc.com

The company provides engineering, commissioning, and integrity management services for floating assets in the energy sector, as well as fiberglass composite materials for offshore industries

Oil and Gas 🇧🇷 Macaé 3,589 2017
12
Enevaeneva.com.br

A leading integrated energy operator, involved in exploration, production, and supply of energy solutions Operates gas fields and power generation assets across Brazil

Oil and Gas 🇧🇷 Rio de Janeiro 2,771 2013
13
Oceanicaoceanica.com.br

Brazilian provider of services and engineering technology solutions for organizations involved in underwater activities

Oil and Gas 🇧🇷 Macaé - RJ 2,672 1978
14
BR Distribuidoravibraenergia.com.br

Energy distributor undergoing rebranding, active on social media platforms with a focus on oil and gas distribution and related services

Oil and Gas 🇧🇷 Rio de Janeiro 2,641 1971
15
Ocyanocyan-sa.com

Specializing in sustainable solutions for the offshore oil and gas industry, the company focuses on safety, client partnership, and ethical operations with drilling and FPSO services

Oil and Gas 🇧🇷 Rio de Janeiro 2,637 n/a
16
Constellation Oil Servicestheconstellation.com

A drilling contractor specializing in deep and ultra-deepwater drilling, with a focus on safety, trust, excellence, and sustainability in operations

Oil and Gas 🇧🇷 Rio de Janeiro 2,357 1980
17
PETROBRAS PETROLEO BRASILEIRO SApetrobras.com.br

A publicly traded company in the Oil and Gas industry, headquartered in Rio de Janeiro, founded in 1953

Oil and Gas 🇧🇷 Rio De Janerio Rj Br 2,085 1953
18
Eletronucleareletronuclear.gov.br

produces electricity from nuclear sources, operating Angra 1 and Angra 2 plants, supplying significant power to Rio de Janeiro with a focus on safety and environmental monitoring.

Nuclear Electric Power Generation 🇧🇷 Rio de Janeiro 2,020 n/a
19
Grupo Bravantebravante.com.br

A Brazilian group with over 50 years of experience providing services in oil and gas, marine support, port support, shipbuilding, repair, and environmental protection

Shipbuilding 🇧🇷 Rio de Janeiro 1,914 1965
20
PRIOprio3.com.br

Leading independent oil and gas company in Brazil, focusing on efficient reservoir management and redeveloping mature fields with innovative approaches

Oil and Gas 🇧🇷 Rio de Janeiro 1,843 2009
21
Cobra Brasilgrupocobra.com

Global leader in developing, building, and operating industrial facilities with a focus on renewable energy, environmental solutions, engineering, and infrastructure services worldwide

Utilities 🇧🇷 Rio de Janeiro 1,826 1944
22
Prumoprumologistica.com.br

A multi-business economic group developing a sustainable and competitive port-industry, expanding a business ecosystem while prioritizing environmental protection and ESG commitments

Transportation, Logistics, Supply Chain and Storage 🇧🇷 Rio de Janeiro 1,560 n/a
23
Odebrecht Óleo e Gásodebrechtoilgas.com

Provider of integrated solutions for the upstream oil and gas industry, offering services in offshore drilling, subsea construction, production, logistics, maintenance, and well services

Oil and Gas 🇧🇷 Rio de Janeiro 1,290 2006
24
Transmissora Aliança de Energia Elétrica - TAESAtaesa.com.br

A leading Brazilian group dedicated to electric power transmission, focusing on technical excellence, sustainability, and innovation to connect Brazil with reliable energy

Electric Power Transmission, Control, and Distribution 🇧🇷 Rio de Janeiro 1,225 n/a
25
Ventura Offshorepetroservmarineinc.com

A Brazilian company providing drilling, completion, intervention, and production services for oil and gas wells, with a focus on quality, safety, and compliance

Oil and Gas 🇧🇷 Macaé 1,205 1997
26
State Grid Brazil Holding S.A.stategrid.com.br

A subsidiary of a Chinese state-owned company, operating and maintaining seven energy transmission concessions in Brazil since 2010

Utilities 🇧🇷 Rio de Janeiro 1,181 2010
27
Origem Energiaorigemenergia.com

Established in 2017, it specializes in energy integration across different sectors and operates across various states, offering a diverse portfolio of energy solutions

Oil and Gas 🇧🇷 Rio de Janeiro 1,090 2017
28
Roda Conveniênciarodaconveniencia.com.br

Leader in retail tech, specializing in micro markets, bringing well-being and convenience to over 150 offices and residential condos in Rio de Janeiro and Niterói

Food and Beverage Services 🇧🇷 Rio de Janeiro 1,004 2015
29
CYMI BRASILcymi.com.br

With over 60 years of experience, we specialize in infrastructure concessions, energy transmission, substations, and now also operate in sanitation and renewable energy sectors

Construction 🇧🇷 Rio de Janeiro 992 2002
30
EBXebx.com.br

Global Brazilian group implementing transformative investments in strategic areas, generating wealth and jobs through listed companies in various industries worldwide Operations in multiple countries

Investment Management 🇧🇷 Rio de Janeiro 958 1980
31
Refitrefit.com.br

A Brazilian refinery dedicated to producing Gasolina A, investing in modernization, governance practices, and delivering quality fuel to customers

Oil and Gas 🇧🇷 Rio de Janeiro 936 1954
32
INBinb.gov.br

The business operates in the nuclear fuel supply chain, including mining, processing, enrichment, and fuel fabrication for Brazilian nuclear power plants

Nuclear Electric Power Generation 🇧🇷 Rio de Janeiro 930 1988
33
Estaleiro Brasaestaleiro-brasa.com.br

Specialized in constructing topside modules and integrating FPSO platforms for the oil and gas industry Also offers logistics support, cargo handling, repair, and maintenance services offshore

Shipbuilding 🇧🇷 Niterói 762 2012
34
Norskan Offshoredof.com

A Brazilian company backed by a Norwegian group, NorSkan Offshore invests in the Brazilian naval industry and manages state-of-the-art vessels for the offshore market

Maritime 🇧🇷 Rio de Janeiro 751 n/a
35
Vertical Groupverticalgroup.com.br

Specialized in working at heights, servicing complex naval and industrial projects with a focus on safety, quality, and environmental responsibility

Oil and Gas 🇧🇷 Niterói 745 2017
36
SISTACsistac.com.br

Leading provider of engineering solutions for inspection, maintenance, and repair in the offshore oil & gas industry in Brazil, prioritizing safety, quality, and sustainability

Oil and Gas 🇧🇷 Macaé 742 1995
37
Grupo Queiroz Galvãoqueirozgalvao.com.br

The company focuses on providing infrastructure for growth, social development, and environmental respect through various sectors like construction, real estate, and oil & gas

Construction 🇧🇷 Rio de Janeiro 725 1953
38
CEPELcepel.br

A research center focused on power generation, transmission, and distribution, with over 35 years of experience in energy research and development

Research Services 🇧🇷 Rio de Janeiro 711 1974
39
Altera&Ocyanocyan-sa.com

Altera&Ocyan is a sustainable company providing solutions for the offshore upstream oil and gas industry in Brazil and internationally

Oil and Gas 🇧🇷 Rio de Janeiro 597 n/a
40
Sapura Navegação Marítima S.A.seagems.com.br

Specializing in subsea services, this Brazilian joint venture operates a fleet of vessels for support, installation, and pipe laying with a global presence in over 20 countries

Oil and Gas 🇧🇷 Rio de Janeiro 587 2011
41
TAGntag.com.br

Transporting gas across 10 Brazilian states, integrating energy from various sources to distribution networks, and providing proactive logistical solutions for energy security.

Oil and Gas 🇧🇷 Rio de Janeiro 419 2019
42
VINCI Energies Brasilvinci-energies.com.br

The company focuses on connectivity, energy efficiency, and digital evolution to implement new technologies in energy, industry, and communication infrastructures

IT Services and IT Consulting 🇧🇷 Rio de Janeiro 160 1900

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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