| # | Company | Employees |
|---|---|---|
| 1 |
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. |
16,000 |
| 2 |
Grupo Energisagrupoenergisa.com.br
The company operates five distribution companies in Brazil, serving approximately 24 million consumers across 352 municipalities in the Northeast and Southeast regions |
12,168 |
| 3 |
Grupo Equatorialequatorialenergia.com.br
Operating across multiple utility sectors in Brazil: electricity generation, transmission, and distribution, including renewables; also sanitation, telecommunications, services, and private pension. |
10,091 |
| 4 |
Prefeitura Municipal de Macaémacae.rj.gov.br
Municipal administration of a city, providing governance, public services, and infrastructural development for the community of Macaé |
9,778 |
| 5 |
Prefeitura da Cidade do Recifewww2.recife.pe.gov.br
The company provides municipal services in Recife, offering resources for reporting and addressing issues like streetlight outages, waste accumulation, and public health concerns |
9,543 |
| 6 |
CPFL Energiagrupocpfl.com.br
The company has been shaping the history of the Brazilian energy sector for 110 years, with a focus on distribution, generation, transmission, and services |
9,255 |
| 7 |
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. |
7,516 |
| 8 |
Governo do Estado de Pernambucosad.pe.gov.br
The organization serves as the governing body of the state of Pernambuco in Brazil, overseeing public administration and policies |
5,963 |
| 9 |
Enel Brasilenel.com.br
Global energy player, Brazilian leader in renewable generation, providing distribution and generation services to millions of customers in São Paulo, Rio de Janeiro, and Ceará. |
5,778 |
| 10 |
Prefeitura Municipal de Maricámarica.rj.gov.br
Manages public resources, ensuring transparency and accountability. Provides timely information for fiscal and social control improvement. |
5,175 |
| 11 |
Secretaria de Estado da Saúde de São Paulosaude.sp.gov.br
The company is responsible for formulating health policies, prioritizing preventive actions, distributing information, managing health departments, and promoting community participation in healthcare decision-making |
3,991 |
| 12 |
Condominio Residencialconectcon.net
An utilities provider in Sao Paulo, Brazil, focused on serving residential condominiums with essential services and amenities |
3,870 |
| 13 |
Prefeitura Municipal de Campos dos Goytacazescampos.rj.gov.br
Administrative center of a city government, housing the mayor's office, inter-department distribution center, and HR department for municipal administration |
3,848 |
| 14 |
Prefeitura Municipal de Jundiaígov.br
Public entity responsible for serving the population of Jundiaí - SP, Brazil Serving approximately 400,000 inhabitants in various community-related matters |
3,256 |
| 15 |
Governo do Estado da Bahiabahia.ba.gov.br
A organization based in the State of Bahia, offering services or products specific to that region or operating within its boundaries |
3,241 |
| 16 |
COPASAcopasa.com.br
Official page of a sanitation company based in Minas Gerais, Brazil Provides water and sewage services to the region Visit wwwcopasacombr |
3,179 |
| 17 |
CEDAE - Companhia Estadual de Águas e Esgotoscedae.com.br
A water and sewage company in Rio de Janeiro that operates water supply, sewage collection, treatment, and distribution for over nine million people |
3,011 |
| 18 |
Companhia Municipal de Limpeza Urbana - COMLURBrio.rj.gov.br
The organization is a major public cleaning entity in Latin America, focusing on urban cleaning services in Rio de Janeiro |
2,595 |
| 19 |
CELESC - Centrais Elétricas de Santa Catarinacelesc.com.br
Electrical energy distributor, serving nearly all of Santa Catarina state in Southern Brazil. Part of a larger group of enterprises. |
2,547 |
| 20 |
SAAE - Serviço Autônomo de Água e Esgotosaaegv.com.br
The organization provides water treatment and sewage collection services in Governador Valadares, managing the entire system since 1952 |
2,384 |
| 21 |
Secretaria Municipal da Saúde de São Pauloprefeitura.sp.gov.br
The Municipal Health Department manages the Unified Health System, formulating and implementing policies to promote, protect, and recover population health It also regulates the private healthcare system |
2,353 |
| 22 |
Companhia de Água e Esgoto do Ceará - Cagececagece.com.br
A mixed-capital public utility providing water supply and sanitation services to 152 municipalities in the state, benefiting around 57 million people |
2,326 |
| 23 |
Manserv Montagem e Manutenção S.A.
Manserv Montagem e Manutenção SA provides utility services in São Paulo, Brazil, specializing in installation and maintenance for various industries |
2,245 |
| 24 |
ISA ENERGIA BRASILisaenergiabrasil.com.br
Leading in energy transmission, this organization transports a significant portion of Brazil's electricity annually, ensuring quality and reliability through innovation and improvements |
2,245 |
| 25 |
Prefeitura de Uberabauberaba.mg.gov.br
Official Government Municipal page for information, opinions, interaction, and questions about the city Stay informed and engaged with our community |
2,158 |
| 26 |
Prefeitura Municipal de Santa Luzia, MGsantaluzia.mg.gov.br
Located strategically near Belo Horizonte, our company operates in the 3rd industrial hub of Greater BH, offering easy access to airports and vital infrastructure in Santa Luzia |
2,139 |
| 27 |
Norte Tech
Leading provider of services in the electrical sector in the states of Amazonas and Roraima, with a focus on innovation and continuous improvement |
2,012 |
| 28 |
Corpo de Bombeiros da PMESPcorpodebombeiros.sp.gov.br
Official page of the Fire Department of the Military Police of the State of São Paulo, providing emergency services since 1880 Mission: excellence and quality with social trust |
1,972 |
| 29 |
Governo do Estado do Acreacre.gov.br
Official page representing the Government of the State of Acre, providing information and services to the public |
1,965 |
| 30 |
Prefeitura Municipal de Indaiatubaindaiatuba.sp.gov.br
Leading municipality focused on innovation and technology investment, serving as a model city in Brazil for its advancements |
1,906 |
| 31 |
Saneparsanepar.com.br
Public utility providing treated water, sewage collection, treatment, and solid waste disposal services for all residents in Paraná. |
1,893 |
| 32 |
Compesaservicos.compesa.com.br
A state-owned organization in Pernambuco providing water and sanitation services to almost all municipalities in the state since 1971 |
1,880 |
| 33 |
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 |
1,826 |
| 34 |
DPL Construçõessrv.br
A service provider for Equatorial Energia Group, specializing in engineering services for construction and maintenance of electrical substations and transmission lines |
1,802 |
| 35 |
SAAEbarramansa.rj.gov.br
The organization is responsible for water supply, treatment and distribution, as well as sanitation services and waste management in Barra Mansa, Rio de Janeiro |
1,776 |
| 36 |
Secretaria Municipal de Saúde Manausmanaus.am.gov.br
Managing the municipal health system in Manaus by implementing quality and effective health surveillance and care actions following SUS guidelines |
1,746 |
| 37 |
Prefeitura Municipal de São Gonçalopmsg.rj.gov.br
The company provides a historical overview of São Gonçalo, highlighting its founding, development, and economic progress in the 16th to 18th centuries |
1,712 |
| 38 |
Eletropauloeletropaulo.com.br
A global energy group with operations in 34 countries, generating and distributing electricity and gas to millions of people |
1,708 |
| 39 |
Prefeitura Municipal de Cuiabácuiaba.mt.gov.br
Local government entity in Cuiabá, overseeing municipal services and administration for the city's residents and communities |
1,593 |
| 40 |
Governo do Estado de Rondôniarondonia.ro.gov.br
Government profile representing the State of Rondônia, providing information and resources to citizens and promoting public services and initiatives |
1,543 |
| 41 |
Prefeitura de Jaragua do Suljaraguadosul.sc.gov.br
Manufacturing diverse products in sectors like metal mechanics, textiles, furniture, food, cosmetics, electronics, and more in a cultural-rich city with a strong industrial presence |
1,429 |
| 42 |
AES Brasilaesbrasil.com.br
Integrated energy platform offering tailored sustainable solutions for small and large businesses, from energy generation to renewable development, aiming to accelerate the future of energy |
1,410 |
| 43 |
Grupo CEEEceee.com.br
A mixed economy company involved in electricity generation, transmission, and distribution with multiple subsidiaries and significant presence in the state of Rio Grande do Sul |
1,309 |
| 44 |
Polícia Militar do Estado do Rio de Janeirosepm.rj.gov.br
Law enforcement agency in Rio de Janeiro, responsible for maintaining public order, preventing crime, and ensuring the safety of the community |
1,295 |
| 45 |
Prefeitura Municipal de Seropédicaseropedica.rj.gov.br
Local government organization located in Seropédica, RJ, responsible for the management and development of the municipality |
1,287 |
| 46 |
Polícia Militar do Parápm.pa.gov.br
A defense and space company based in Brazil, specializing in law enforcement and military operations in the state of Pará |
1,257 |
| 47 |
Agile Corp Serviços Especializadosagilecorp.com.br
Specialized services provider focused on excellence, transparency, agility, and modern solutions tailored to clients' needs Emphasizes sustainability and environmental impact reduction |
1,205 |
| 48 |
Prefeitura Municipal de Itapetininga/SPitapetininga.sp.gov.br
Local government organization serving the municipality of Itapetininga, involved in providing public services, urban planning, and community development initiatives |
1,202 |
| 49 |
Prefeitura Municipal de Ubatubaubatuba.sp.gov.br
Based in Ubatuba, the company celebrates the ecological paradise of the region, showcasing its natural beauty and rich history |
1,190 |
| 50 |
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 |
1,181 |
| 51 |
Prefeitura Municipal de Araçatubaaracatuba.sp.gov.br
Local government entity in Araçatuba overseeing public services and policies for residents and managing the development of the city |
1,175 |
| 52 |
Prefeitura de Senador Canedosenadorcanedo.go.gov.br
The organization manages Senador Canedo from 2021 to 2024, overseeing various administrative tasks and initiatives within the municipality |
1,133 |
| 53 |
Prefeitura Municipal de Nova Friburgo, RJpmnf.rj.gov.br
The organization is located in Nova Friburgo, Rio de Janeiro's mountainous region, known for its historical significance as the first non-Portuguese colony in Brazil |
1,099 |
| 54 |
Prefeitura de Mesquita
A municipality in Rio de Janeiro, known for its history and natural beauty, officially gained independence in 1999 through a plebiscite |
1,084 |
| 55 |
CTG Brasilctgbr.com.br
Develops world with large-scale clean energy. Investments in hydroelectric, wind, and solar power plants in Brazil. Part of a global clean energy leader. |
1,081 |
| 56 |
Prefeitura Municipal de Itabiritoitabirito.mg.gov.br
Local government organization in Itabirito, focused on managing public services and infrastructure for the community |
1,058 |
| 57 |
Prefeitura Municipal de Ourinhosourinhos.sp.gov.br
Specializes in agriculture, particularly coffee and cotton production, in a region influenced by Italian colonization and rapid land occupation |
1,041 |
| 58 |
Prefeitura Municipal de Cruzeiro
The company operates in the region where a chapel was built in 1781, leading to the formation of a village and later a municipality in 1871 |
1,023 |
| 59 |
Prefeitura de Vila Velhavilavelha.es.gov.br
Local government managing the first city in ES, with 36km of beaches, home to Nª Sª da Penha, and the largest chocolate factory in Latin America |
986 |
| 60 |
Amazonas Energiawebsite.ambarenergia-am.com.br
Distributes electricity across Amazonas, ensuring power supply for residents and businesses within the region. |
985 |
| 61 |
3C Services S/A3cservices.com.br
Specialized services in metrology, energy field services, logistics solutions, and renewable energy projects, with over 10 years of ISO certification and Inmetro accreditation |
944 |
| 62 |
Companhia de Agua e Esgoto do Ceara - CAGECEcagece.com.br
A state-owned organization in Ceará, Brazil, providing water and sanitation services to 71 locations for 17 million people, with a focus on sustainability and social responsibility |
944 |
| 63 |
Prefeitura Municipal de Cajamarcajamar.sp.gov.br
Located in a strategic logistics hub near major highways, Cajamar is known for its proximity to the state capital and growth opportunities Learn more on the official website |
916 |
| 64 |
Prefeitura Municipal de Campinascampinas.sp.gov.br
Empowering the people of Campinas, creating a stronger community for all residents |
885 |
| 65 |
Governo do Estado do Piauípi.gov.br
State government profile providing information about the State of Piauí in Brazil, including updates, news, and resources for citizens |
861 |
| 66 |
Prefeitura Municipal de Lençóis Paulistalencoispaulista.sp.gov.br
Creating a city that caters to all individuals, embracing diversity and inclusivity to foster a sense of community |
844 |
| 67 |
Elo Contact Centergrupoelo.com
A utilities company based in São Luís, Brazil, providing contact center services at Av Lourenço Vieira da Silva, specializing in customer interactions |
841 |
| 68 |
Engeseltengeselt.com.br
Founded in 2008, this company serves the electrical, telephone, and IT sectors with a focus on reliability, transparency, commitment, credibility, innovation, and security |
840 |
| 69 |
Prefeitura Municipal de Amparo/SPamparo.sp.gov.br
Public administration managing a municipality with 65,000 residents, known for its historical buildings and considered the Historical Capital of the Waters Circuit |
791 |
| 70 |
Concessionária Nova Rota do Oestenovarotadooeste.com.br
The company is responsible for the concession of a 8509 km stretch of BR-163/MT in Mato Grosso, Brazil, between Itiquira and Sinop |
789 |
| 71 |
Prefeitura Municipal de Várzea Paulistaportal.varzeapaulista.sp.gov.br
Connecting with your local government to provide support and services directly to you, wherever you are |
768 |
| 72 |
Urbam (Urbanizadora Municipal S.A.)urbam.com.br
Public service provider managing essential infrastructure services for the community, including waste management, funeral services, cemetery administration, and IT services for the city government |
741 |
| 73 |
Prefeitura Municipal de Bauruwww2.bauru.sp.gov.br
Empowering Bauru through strength and resilience, this company aims to enhance the community and drive progress in the region |
732 |
| 74 |
Prefeitura Municipal de Belo Jardimbelojardim.pe.gov.br
This institution provides information about the city Visit their website for more details or follow them on social media |
722 |
| 75 |
Atrio Rio Service Tecnologia e Serviçosatriorio.com.br
Specialized labor outsourcing, reception and cleaning services, hospital cleaning, and public service software solutions Provides trained professionals for various sectors in large institutions |
707 |
| 76 |
Prefeitura Municipal de Brumadinhobrumadinho.mg.gov.br
A museums and institutions company located in Brumadinho, Brazil, dedicated to serving the local community through cultural and educational initiatives |
697 |
| 77 |
Produserv Servicosproduserv.com.br
Provider of utility services based in Araucária, Brazil, specializing in serving various industries with their needs for efficient and reliable utility solutions |
683 |
| 78 |
Prefeitura de Teófilo Otoniteofilootoni.mg.gov.br
The company is located in Teófilo Otoni, Brazil, known for its exploration of precious stones and cultural attractions such as historical buildings and events |
678 |
| 79 |
SEFAsefaz.ba.gov.br
Provides services to government entities, municipalities, and foundations in the state of Bahia, Brazil, including consulting and support in different sectors |
666 |
| 80 |
PROGUARU SAproguaru.com.br
Providing public services for conservation in Guarulhos/SP since 1979 Contact us at (11) 2475-9000 for more information |
664 |
| 81 |
Prefeitura Municipal De Sarzedo
A municipal organization in Brazil based in Sarzedo, focusing on local governance and providing services to residents in the area |
611 |
| 82 |
Prefeitura Municipal de Florianópolispmf.sc.gov.br
Public administration organization in Florianópolis, involved in providing governmental services and addressing the needs of the city's residents |
608 |
| 83 |
Fortal Terceirizaçãofortalempreendimentos.com.br
Official profile of a company specializing in outsourcing services, providing comprehensive solutions for various business needs |
578 |
| 84 |
Prefeitura Municipal de Divinópolisdivinopolis.mg.gov.br
Official profile of the municipal government of Divinópolis Stay informed about our daily activities and initiatives |
576 |
| 85 |
Câmara Municipal de Curitibacuritiba.pr.leg.br
A utilities company located in Curitiba, Paraná, Brazil, specializing in providing essential services to the local community |
563 |
| 86 |
Prefeitura de Rio do Sulriodosul.atende.net
Promoting community engagement and communication for building a better city in Rio do Sul through conversation, feedback, and suggestions |
541 |
| 87 |
Elo Contact Center Servicos
Elo Contact Center Servicos based in Brazil provides utility services from its location in Belo Horizonte, Minas Gerais |
538 |
| 88 |
ADEPARÁ - Agência de Defesa Agropecuária do Estado do Paráadepara.pa.gov.br
A state entity responsible for implementing agricultural defense policies in the state, ensuring the certification and competitiveness of animal and plant products |
527 |
| 89 |
Fortal Empreendimentosfortalempreendimentos.com.br
Fortal Empreendimentos operates in the utilities sector, providing services from its headquarters in Fortaleza, Ceará, Brazil |
517 |
| 90 |
Companhia Energética do Maranhão - Cemarequatorialenergia.com.br
A Maranhão-based energy provider with a mission to distribute quality energy, fostering state development with an award-winning team and commitment to values |
513 |
| 91 |
Dolp Engenhariadolpengenharia.com.br
An engineering firm specializing in electrical services for substations, construction, maintenance of energized and de-energized networks, operational technical and commercial services |
511 |
| 92 |
Prefeitura Municipal de Nova Odessanovaodessa.sp.gov.br
Local government entity providing services to residents in Nova Odessa, São Paulo, including public infrastructure, education, healthcare, and other community resources |
508 |
| 93 |
Agência Nacional de Águas e Saneamento Básico (ANA)ana.gov.br
This company provides exclusive, current, and relevant content about water in Brazil, including articles, videos, and training courses They also promote water management initiatives on social media |
507 |
| 94 |
Centro de Informática UFPEportal.cin.ufpe.br
Leading academic technology center in Latin America offering Bachelor's degrees in Computer Science and Computer Engineering with a renowned faculty |
499 |
| 95 |
Prefeitura Municipal de Bezerrosbezerros.pe.gov.br
Established in 1870, the organization has a long history in cattle trading and land ownership, contributing to the development of the region |
490 |
| 96 |
Prefeitura Municipal de Maracajumaracaju.ms.gov.br
A government organization based in Maracaju focusing on serving the community and overseeing public services and projects within the city |
484 |
| 97 |
Sanepavsanepav.com.br
Provider of innovative solutions in sanitation, urban cleaning, and waste management for public and private sectors Offers various services with experienced staff and equipment |
476 |
| 98 |
Prefeitura Municipal de Tarumãtaruma.sp.gov.br
The organization focuses on delivering services to residents to ensure survival, growth, and contribute to the development of Brazil, ranking as one of the top cities in the country for quality of life |
476 |
| 99 |
Águas de Teresinaaguasdeteresina.com.br
A provider responsible for water supply, sewage collection, and treatment in Teresina, investing significantly to improve sanitation services in the city |
473 |
| 100 |
Companhia de Saneamento de Alagoascasal.al.gov.br
A utility based in Maceió, Brazil, specializing in sanitation services, serving the region of Alagoas with a focus on water and wastewater management |
472 |
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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 9, 2026.
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