| # | Company | Employees |
|---|---|---|
| 1 |
Cosancosan.com.br
Portfolio management firm investing in Brazil's key areas, maximizing unique assets with agile execution, balancing boldness and responsibility for sustainable relationships and results |
36,235 |
| 2 |
Ultragazultragaz.com.br
Provides energy solutions focused on customer convenience and sustainability, serving all regions of Brazil with dedicated service. |
5,377 |
| 3 |
Copa Energiacopaenergia.com.br
Leading the way in innovative energy solutions, driving sustainable development with a focus on clean energy sources for a better future |
3,454 |
| 4 |
Comgascomgas.com.br
A leading distributor of natural gas in Brazil with a vast network reaching over 13 million consumers in residential, commercial, and industrial sectors |
1,789 |
| 5 |
Consigazconsigaz.com.br
A leading distributor of LPG offering gas in cylinders and through an intelligent on-site refueling system called System Bobtail |
1,656 |
| 6 |
Acelenacelen.com.br
An energy company investing, increasing efficiency, and boosting productivity in the Brazilian energy sector with high governance and safety standards, part of Mubadala Capital. |
1,590 |
| 7 |
NM ENGENHARIA E CONSTRUÇÕES LTDA.nmengenharia.com.br
With over three decades of experience, the company offers maintenance, construction, and assembly services, certified for its Integrated Management System It prioritizes social responsibility and safety, earning recognition nationally and internationally |
1,208 |
| 8 |
CESP100.51.164.5
Founded in 1966, the company operates two hydroelectric plants, supplying energy to various distributors and the free energy market, focusing on sustainable solutions and wealth generation |
1,131 |
| 9 |
Câmara de Comercialização de Energia Elétrica - CCEE (Chamber of Electric Energy Commercialization)ccee.org.br
Operator of Brazil's electricity market, promoting fair trading, ensuring smooth market function, and fostering sector evolution discussions. |
941 |
| 10 |
Apolo Tubulars S.A.tubosapolo.com.br
Specializing in high-quality pipes for the oil and gas industry |
894 |
| 11 |
Motrice Soluções em Energiamotricese.com.br
Specializing in EPC contracts for energy generation, cogeneration, transmission, and distribution projects |
638 |
| 12 |
PSE - Projetos e Serviços de Engenhariadrive.google.com
Specialized engineering services for energy, water, sanitation, gas, waste collection, and civil construction companies and concessions since 1992 |
530 |
| 13 |
Zaninizanini.godaddysites.com
A leading provider of comprehensive solutions and technology for various industries, including oil and gas, sugar and alcohol, and steelmaking |
495 |
| 14 |
ENGEMON Engenhariaengemon.net.br
Specializing in QSMS services, engineering, project execution, maintenance, and skilled labor supply for industrial projects, with a focus on quality and client satisfaction |
478 |
| 15 |
Asvotec Termoindustrial LTDAasvotec.com.br
A national metallurgical company with over 50 years of experience providing engineering solutions for various industries with high-quality and reliable products |
472 |
| 16 |
SEPCO1 Construções do Brasil LTDA.en.sepco1.com
Specializing in EPC contracts and construction services in energy sector, with expertise in building substations, transmission lines, power plants, wind and solar parks |
454 |
| 17 |
Chemtechsiemens-energy.com
Brazilian digital solutions provider in IT, engineering, and digitization for Process Industries, part of Siemens Energy group operating domestically and internationally |
399 |
| 18 |
Royal FICroyalfic.com.br
A leading petroleum derivatives distributor in Brazil, known for reliability, quality products, and commitment to environmental and occupational safety standards |
383 |
| 19 |
Vale do Paraná S/A - Álcool e Açúcar
An oil & energy business based in São Paulo, Brazil, focusing on alcohol and sugar production |
340 |
| 20 |
Seacrest Petroleoseacrestpetroleo.com.br
Independent oil and gas producer with onshore fields and export infrastructure in Brazil, with large reserves and plans for significant production growth |
329 |
| 21 | 320 | |
| 22 |
Grupo Unipetrounipetro.com.br
The Group specializes in supplying diesel, fuel oils, and lubricants, with over 60 years of tradition and trust in multiple states |
253 |
| 23 |
Cosan Lubricantsmoovelub.com
Leading lubricants manufacturer with global presence in South America and Europe, offering high-quality products under renowned brands, base oil distribution, and automotive specialties production |
193 |
| 24 |
Gilbarco Veeder-Root Brasilgilbarco.com
Global leader in fuel pump technology, providing integrated solutions from tank to convenience store, understanding market demands to develop innovative, customer-focused products |
161 |
| 25 |
Maxen
A Brazilian business with three units: distribution of tube solutions, equipment for global oil and gas integrators, and customized services for various clients |
153 |
| 26 | 77 |
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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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