This selection of large Portuguese companies in the energy sector includes EDP, a global energy company focusing on renewable sources, and Galp, which provides integrated energy and mobility solutions. Other notable firms are Efacec, an innovative solutions provider for energy, mobility, and the environment, and The Navigator Company, an integrated producer of forest, pulp, paper, tissue, and energy. Mota-Engil, a multinational group, specializes in construction, energy, and mining.
A significant portion of these companies, such as EDP, Galp, REN, E-REDES, and Bosch Portugal, are headquartered in Lisbon. The companies listed primarily operate within the utilities, oil and gas, and construction sectors, with a strong emphasis on energy generation, distribution, and related infrastructure.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 13,952 | ||||
| 2 |
Mota-Engilmota-engil.com
Multinational group specializing in engineering, construction, environment, transport concessions, energy, and mining across Europe, Africa, and Latin America. |
9,395 | |||
| 3 | 6,400 | ||||
| 4 |
Efacecefacec.com
Innovative solutions provider for energy, mobility, and the environment Specializing in technologically advanced products and systems for global markets |
2,312 | |||
| 5 |
The Navigator Companythenavigatorcompany.com
Integrated producer of forest, pulp, paper, tissue, and energy with strong focus on innovation, sustainability, and carbon neutrality goals. |
2,282 | |||
| 6 |
Martifer Groupmartifer.com
A multinational industrial group focused on the metallic construction sector, with around 1,400 employees and listed on Euronext Lisbon |
1,791 | |||
| 7 |
Bosch Portugalbosch.pt
A leading IoT company offering innovative solutions for smart homes, cities, industry, and mobility Focused on creating a connected lifestyle and improving quality of life |
1,542 | |||
| 8 |
dst groupdstsgps.com
A leader in construction and public works, the group has expanded into environmental, telecommunications, and renewable energy sectors both nationally and internationally |
1,470 | |||
| 9 | 1,311 | ||||
| 10 |
E-REDESe-redes.pt
A company that has been distributing energy since 1976, focusing on excellence, sustainability, digital transformation, and innovation for a better future |
1,199 | |||
| 11 |
Grupo Visabeiragrupovisabeira.com
A multinational holding company with diverse interests in telecommunications, energy, construction, ceramics, tourism, hospitality, and other industries across multiple countries |
1,106 | |||
| 12 |
CJR Renewablescjr-renewables.com
Provider of integrated services for wind farms and solar plants, including design, construction, installation, transportation, and turbine erection, offering flexible and turnkey solutions for a greener future |
993 | |||
| 13 |
MCAmcagroup.com
A Portuguese group founded in 1998, focused on Energies, Urban Development, Infrastructures, and Healthcare, with international presence in multiple geographical clusters |
764 | |||
| 14 |
EDP Portugaledp.com
A global energy company focused on promoting renewable sources, achieving 100% green energy by 2030, and supporting decentralized solar energy and electric mobility |
707 | |||
| 15 |
Petrotec Grouppetrotec.com
A group of private companies specializing in equipment and management systems for the oil industry, as well as smart mobility solutions globally |
693 | |||
| 16 |
ENDIPREVmuehlhanwindservice.com
Specializing in advanced fault diagnosis, commissioning, troubleshooting, maintenance, and operation of wind turbines to maximize availability and efficiency in wind farms |
641 | |||
| 17 |
Oman Oil Marketing Companyoomco.com
A leading Omani fuel marketing company operating retail, commercial, aviation, marine fuel services along with non-fuel services, focused on strategic growth globally |
504 | |||
| 18 |
METALOGALVAmetalogalva.pt
A leading steel structure producer with a focus on sustainable development, innovation, and employee well-being, ensuring high quality products and customer satisfaction |
477 | |||
| 19 |
Visabeira Global SGPS, SAvisabeiraglobal.com
The company operates in telecommunications, energy, technology, and construction, offering a wide range of services from network engineering to building maintenance |
463 | |||
| 20 | 433 | ||||
| 21 |
CSWIND PTcswind.com
Manufactures steel equipment and solutions for the wind energy market, specializing in wind towers, with facilities in Portugal Email for job opportunities |
428 | |||
| 22 |
Greenvolt Nextgreenvolt.com
A renewable energy industry leader providing tailored energy solutions in 12 European markets, such as on-site EPCs, corporate PPAs, self-consumption, and more |
372 | |||
| 23 |
ENGIE Energy Solutionsengie.pt
Global energy player focusing on electricity, natural gas, and energy services, providing innovative and efficient solutions for sustainable energy and climate change challenges |
351 | |||
| 24 |
Veolia Portugalveolia.pt
A global group providing innovative solutions for water, waste, and energy management Committed to sustainable practices and ecological transformation worldwide |
326 | |||
| 25 |
Goldenergygoldenergy.pt
A company providing electricity and natural gas with a focus on customer satisfaction, competitive pricing, sustainability, and a dedicated team |
323 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
TCPI - TECNOPROJECTO INTERNACIONAL (a PONTICELLI FRÈRES GROUP Company)tcpi.pt
An international E&I Engineering, Construction, and Maintenance company specializing in industrial projects including power plants, pipelines, refineries, and specialized technical installations |
321 | |||
| 27 |
Grupo Alves Bandeiragrupoalvesbandeira.com
A multinational company in Portugal that operates in energy, mobility, and aftermarket sectors, creating value with its own products and representing international brands |
314 | |||
| 28 |
PAINHAS SApainhas.pt
Established in Portugal in 1980, this company specializes in energy and telecommunication networks, providing global solutions through highly skilled teams and advanced technology |
311 | |||
| 29 |
Águas do Porto, EMaguasdoporto.pt
A municipal water utility managing full water cycle in Porto, Portugal, serving households, focusing on efficiency, creating value, and environmental best practices |
302 | |||
| 30 |
Powerdotpowerdot.eu
Development and operation of electric vehicle charging stations in parking lots, offering turnkey solutions at no cost to owners. |
219 | |||
| 31 |
PRF - Gas Solutionsprf.pt
Specializing in engineering, constructing, and maintaining fuel gas infrastructure including LNG, CNG, hydrogen, biogas systems, refueling stations, satellite plants, and bunkering systems |
195 | |||
| 32 |
Finergefinerge.pt
Leading provider of sustainable energy solutions, specializing in wind and solar power generation to reduce CO2 emissions and promote clean electricity |
185 | |||
| 33 |
EDIA - Empresa de Desenvolvimento e Infra-estruturas do Alqueva, S.A.edia.pt
A state-owned company responsible for designing, building, and operating Alqueva Multi-purpose Undertaking infrastructures to promote economic and social development |
185 | |||
| 34 | 173 | ||||
| 35 |
i-chargingi-charging.tech
Specializing in electric vehicle charging infrastructure, we develop innovative hardware and software solutions to optimize operations and grid utilization globally |
100 | |||
| 36 |
Grupo TIELtiel.pt
With 40 years of experience, this company provides transportation services with a focus on professionalism, excellence, safety, innovation, sustainability, and social responsibility |
69 | |||
| 37 | 66 | ||||
| 38 |
ENERGETUS S.A.energetus.pt
This company specializes in developing and installing customized energy solutions, including co-generation, biomass, hydroelectric, and wind power plants, with experienced engineers and technicians available for maintenance |
65 | |||
| 39 |
Addvoltaddvolt.com
Leading global transport electrification with innovative plug-in electric technology, reducing costs and emissions for vehicles worldwide through sustainable energy solutions |
58 | |||
| 40 |
Master Vantagem Portugalmastervantagem.com
A company operating since 2013 in Portugal and Spain, providing electricity, gas, energy efficiency solutions, solar energy, connectivity services, targeting various client types |
56 | |||
| 41 | 55 | ||||
| 42 |
Elergone Energiaelergone.pt
With almost 15 years of experience in the energy sector, this company focuses on sustainable energy solutions, energy optimization, solar projects, efficiency, electric mobility, and service management |
54 | |||
| 43 |
Helexia Portugalhelexia.pt
Integrated solutions for energy production and management in large buildings: development of photovoltaic projects, energy efficiency solutions, investment, construction, operation, and long-term project management services provided |
51 | |||
| 44 | 38 | ||||
| 45 |
Fusion Fuelfusion-fuel.eu
This company accelerates the energy transition by producing zero-emissions Green Hydrogen using a revolutionary electrolyzer solution and renewable energy |
27 | |||
| 46 |
Powersilpowersil.pt
Integrated energy solutions provider offering turnkey solutions for generator sets, automatisms, hybrid solar energy solutions, industrial services, and high performance products from leading brands |
26 | |||
| 47 |
ENGIE Hemeraengie-hemera.com
Specialist in designing, installing, and operating medium to large-scale solar photovoltaic systems for B2B clients, with a focus on industries, retail, logistics, and agriculture |
17 | |||
| 48 |
MAGNUM CAPmagnumcap.com
Develops and provides reliable charging technologies and infrastructure for electric vehicles, including fast, normal, and home charging systems, focusing on usability, safety, and grid preservation. |
17 | |||
| 49 | 17 | ||||
| 50 |
INFORGÁS - COMÉRCIO DE GÁS LDAinforgas.pt
The company is an innovative and trustworthy gas trading business operating in various sectors, offering quality products and services with a focus on customer satisfaction |
13 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 12, 2026.
More company lists in Portugal
- The largest companies in Portugal 1,725
- Multinational companies in Portugal 427
- Public sector organisations in Portugal 167
- Manufacturers in Portugal 167
- Retail chains in Portugal 158
- Critical infrastructure operators in Portugal 156
- Companies with in-house R&D in Portugal 154
- Education providers in Portugal 135
- IT services companies in Portugal 128
- IT Services and IT Consulting companies in Portugal 111
- Higher Education companies in Portugal 109
- Corporate groups and holding companies in Portugal 99
- Software Development companies in Portugal 96
- Financial services firms in Portugal 95
- Companies with a mobile app in Portugal 94
- Professional services firms in Portugal 91
- Healthcare providers in Portugal 84
- Consulting firms in Portugal 79
- Research institutes in Portugal 74
- Hospitals and Health Care companies in Portugal 70
- SaaS companies in Portugal 63
- Hotel and hospitality groups in Portugal 61
- Hardware manufacturers in Portugal 60
- E-commerce companies in Portugal 56