# The 27 largest critical infrastructure operators in Porto Alegre

Tamtam tracks 27 critical infrastructure operators headquartered in Porto Alegre. This list ranks all of them by number of employees on LinkedIn, led by Sicredi, Hospital Moinhos de Vento and HCPA - Hospital de Clínicas de Porto Alegre. Their median headcount is 689. Half of them were founded in 1971 or later.

The critical infrastructure operators in Porto Alegre are predominantly hospitals and healthcare providers. Companies like Hospital Moinhos de Vento, HCPA - Hospital de Clínicas de Porto Alegre, Hospital São Lucas da PUCRS, Hospital Mãe de Deus, Instituto de Cardiologia, Grupo Hospitalar Conceição, Hospital Santa Casa de Misericórdia, Hospital Ernesto Dornelles, and Associação Hospitalar Vila Nova all operate in this sector, providing a wide range of medical services.

Beyond healthcare, Sicredi is a large financial services cooperative. Grupo CEEE operates in utilities, while Grupo Ouro e Prata focuses on ground passenger transportation. EPTC - Empresa Pública de Transporte e Circulação S.A. handles government administration related to transport, and Secretaria de Estado de Segurança Pública do RS is active in public safety. Most of these organizations are well-established, with many founded mid-20th century.

🇧🇷 Porto Alegre · 27 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Sicredi](https://www.tamtam.ai/c/sicredi) (sicredi.com.br)<br>A collaborative organization in Brazil, prioritizing affordable financial solutions and social impact, valuing employee well-being and community development Join us at Sicredi! | Financial Services | 🇧🇷 Porto Alegre | 36,944 |  |
| 2 | [Hospital Moinhos de Vento](https://www.tamtam.ai/c/hospital-moinhos-de-vento) (hospitalmoinhos.org.br)<br>Leading hospital in the southern region certified by Joint Commission International Located in Porto Alegre, RS Recruiting healthcare professionals Apply online | Hospitals and Health Care | 🇧🇷 Porto Alegre | 5,487 | 1927 |
| 3 | [HCPA - Hospital de Clínicas de Porto Alegre](https://www.tamtam.ai/c/hcpa-hospital-de-clinicas-de-porto-alegre) (edu.br)<br>A semi-independent federal agency providing high-quality care, research, and academic training, aiming for international recognition in healthcare standards | Hospitals and Health Care | 🇧🇷 Porto Alegre | 4,581 | 1971 |
| 4 | [Hospital São Lucas da PUCRS](https://www.tamtam.ai/c/hospital-sao-lucas-da-pucrs) (hospitalsaolucas.pucrs.br)<br>A healthcare institution providing comprehensive emergency to post-discharge care, renowned for quality assistance, excellent education, cutting-edge research, and international relevance in healthcare solutions | Hospitals | 🇧🇷 Porto Alegre | 2,985 | 1976 |
| 5 | [Hospital Mãe de Deus](https://www.tamtam.ai/c/hospital-mae-de-deus) (maededeus.com.br)<br>A hospital system founded in 1979 reinvesting finances in technology, professional development, social projects Leading accredited healthcare institution in Rio Grande do Sul | Hospitals and Health Care | 🇧🇷 Porto Alegre | 2,560 | 1979 |
| 6 | [Instituto de Cardiologia](https://www.tamtam.ai/c/instituto-de-cardiologia) (cardiologia.org.br)<br>A leading institution in cardiology, providing medical care, education, research, and advancing knowledge in the field with a specialized multidisciplinary team | Hospitals and Health Care | 🇧🇷 Porto Alegre | 2,424 | 1966 |
| 7 | [Grupo Hospitalar Conceição](https://www.tamtam.ai/c/grupo-hospitalar-conceicao-porto-alegre) (ghc.com.br)<br>Leading provider of healthcare services for the Sistema Único de Saúde (SUS) in southern Brazil, offering a range of medical treatments and procedures to the community | Hospitals and Health Care | 🇧🇷 Porto Alegre | 2,347 |  |
| 8 | [Hospital Santa Casa de Misericórdia](https://www.tamtam.ai/c/hospital-santa-casa-de-misericordia)<br>Medical practice located in Porto Alegre, Brazil, offering services at Hospital Santa Casa de Misericórdia | Medical Practices | 🇧🇷 Porto Alegre | 1,549 |  |
| 9 | [Hospital Ernesto Dornelles](https://www.tamtam.ai/c/hospital-ernesto-dornelles) (hed.com.br)<br>A private institution with 312 beds and 33 medical specialties, known for pioneering medical advancements and providing comprehensive healthcare services in the southern region of Brazil | Hospitals and Health Care | 🇧🇷 Porto Alegre | 1,493 | 1962 |
| 10 | [Associação Hospitalar Vila Nova](https://www.tamtam.ai/c/associacao-hospitalar-vila-nova) (sdsvilanova.com.br)<br>A non-profit entity founded in 1965 to provide healthcare, social, cultural, and scientific assistance to the population in the southern region of Porto Alegre | Hospitals and Health Care | 🇧🇷 Porto Alegre | 1,395 |  |
| 11 | [Grupo CEEE](https://www.tamtam.ai/c/grupo-ceee) (ceee.com.br)<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 | Utilities | 🇧🇷 Porto Alegre | 1,309 | 1943 |
| 12 | [Grupo Hospitalar Conceição](https://www.tamtam.ai/c/grupo-hospitalar-conceicao) (ghc.com.br)<br>Leading provider of healthcare services in Porto Alegre, offering universal and free access to medical care through a network of hospitals and community health centers | Hospitals and Health Care | 🇧🇷 Porto Alegre | 1,227 |  |
| 13 | [Secretaria de Estado de Segurança Pública do RS](https://www.tamtam.ai/c/secretaria-de-estado-de-seguranca-publica-do-rs) (ssp.rs.gov.br)<br>Provider of essential services to the population, with a Communication Department directly linked to the Secretary's Office and collaboration with other public security departments | Public Safety | 🇧🇷 Porto Alegre | 847 | 1958 |
| 14 | [EPTC - Empresa Pública de Transporte e Circulação S.A.](https://www.tamtam.ai/c/eptc-empresa-publica-de-transporte-e-circulacao-s-a) (eptc.com.br)<br>Regulates and oversees transit and transport activities in Porto Alegre, established by law in 1998 | Government Administration | 🇧🇷 Porto Alegre | 689 |  |
| 15 | [Grupo Ouro e Prata](https://www.tamtam.ai/c/grupo-ouro-e-prata) (grupoouroeprata.com)<br>A transportation group providing quality and innovative travel experiences through hydro and road transport services, prioritizing safety, customer satisfaction, and environmental responsibility | Ground Passenger Transportation | 🇧🇷 Porto Alegre | 558 | 1939 |
| 16 | [IBSAÚDE](https://www.tamtam.ai/c/ibsaude) (ibsaude.org.br)<br>A nonprofit organization dedicated to strengthening and consolidating the Brazilian Unified Health System (SUS) as a Social Health Organization (OS) | Facilities Services | 🇧🇷 Porto Alegre | 544 | 2005 |
| 17 | [BR.Digital Telecom AS14840](https://www.tamtam.ai/c/br-digital-telecom-as14840) (br.digital)<br>Specializing in fiber optic transmission, the company offers last mile and long-distance services with high capacity and low latency across Brazil | Telecommunications | 🇧🇷 Porto Alegre | 525 |  |
| 18 | [CCG Saúde](https://www.tamtam.ai/c/ccg-saude) (ccgsaude.com.br)<br>Offering the best services in group medicine, the company specializes in outpatient, hospital, and dental care plans, focusing on preventive health through the Saúde em Dia program | Wellness and Fitness Services | 🇧🇷 Porto Alegre | 515 | 1991 |
| 19 | [Sociedade Sulina Hospital Divina Providencia](https://www.tamtam.ai/c/sociedade-sulina-hospital-divina-providencia) (divinaprovidencia.org.br)<br>Follow the official page to stay updated on all information regarding the Divine Providence Health Network Visit the provided link | Hospitals and Health Care | 🇧🇷 Porto Alegre | 506 | 1956 |
| 20 | [Planalto Transportes LTDA](https://www.tamtam.ai/c/planalto-transportes-ltda) (planalto.com.br)<br>A transportation company based in Rio Grande do Sul specializing in passenger and parcel transport with a focus on safety, comfort, and quality service Transporting 45 million passengers annually | Truck Transportation | 🇧🇷 Porto Alegre | 506 | 1948 |
| 21 | [Sabemi](https://www.tamtam.ai/c/sabemi) (sabemi.com.br)<br>With 50 years in the market, the company specializes in insurance, pension, and consigned credit, focusing on serving military and public sector employees nationwide | Financial Services | 🇧🇷 Porto Alegre | 495 | 1973 |
| 22 | [Sebratel](https://www.tamtam.ai/c/sebratel) (sebratel.com.br)<br>Delivering excellence in telecom solutions and corporate connectivity, seeking excellence in processes, people, relationships, and delivery Welcoming talents to join our team | Telecommunications | 🇧🇷 Porto Alegre | 445 | 2009 |
| 23 | [Unesul Transportes](https://www.tamtam.ai/c/unesul-transportes) (unesul.com.br)<br>A transportation company with over 50 years of experience, operating a fleet of 415 buses covering 222 lines across multiple states and countries | Truck Transportation | 🇧🇷 Porto Alegre | 436 | 1964 |
| 24 | [Companhia Carris Porto-Alegrense](https://www.tamtam.ai/c/companhia-carris-porto-alegrense) (carris.com.br)<br>A historic transportation provider, operating buses and electric trams since 1872, recognized nationally for its quality service and public management | Ground Passenger Transportation | 🇧🇷 Porto Alegre | 397 | 1872 |
| 25 | [AES Sul](https://www.tamtam.ai/c/aes-sul) (aessul.com.br)<br>They distribute electricity to around four million people in 118 municipalities in the Central Region of Rio Grande do Sul, focusing on reliable and sustainable energy supply | Utilities | 🇧🇷 Porto Alegre | 382 | 1997 |
| 26 | [Secretaria Municipal de Saúde de Porto Alegre](https://www.tamtam.ai/c/secretaria-municipal-de-saude-de-porto-alegre) (www2.portoalegre.rs.gov.br)<br>The organization focuses on providing comprehensive healthcare services, coordinating a network of healthcare facilities, and promoting public health initiatives in vulnerable populations | Wellness and Fitness Services | 🇧🇷 Porto Alegre | 333 | 1980 |
| 27 | [Unicred Porto Alegre](https://www.tamtam.ai/c/unicred-porto-alegre) (unicred.com.br)<br>A cooperative financial institution focused on providing personalized services, distributing profits to members, and offering competitive investment returns and low fees | Financial Services | 🇧🇷 Porto Alegre | 322 | 1990 |

## 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 Nov 11, 2026.

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Source: https://www.tamtam.ai/l/critical-infrastructure-operators-porto-alegre