Sectors

Energy and natural resources

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We advise on Portuguese and international transactions in the areas of fossil and renewable energy, and on onshore and offshore oil projects. Our team also advises on wind, solar, biomass and biofuels projects and, in general, on upstream and downstream energy infrastructures projects.

We have gained great experience from regularly advising Portuguese and foreign companies in this sector. Our clients include investors and finance providers, promoters, governments and regulators, technology and equipment suppliers who demand lawyers with international expertise in these matters.

PLMJ keeps up to date with the growing liberalisation and fast pace of technological development in this sector so we can provide the best legal support in these areas. Our team also provides day-to-day regulatory and corporate support and advice on mergers and acquisitions.

Everything we do focuses on the clients’ specific needs and on protecting their interests.

The Legal 500
2026 Energy and Natural Resources Recommended Tier 2

"PLMJ's energy and natural resources practice stands out for its combination of deep regulatory knowledge with a truly strategic vision of the energy, environment, and climate transition sectors. Led by João Marques Mendes, the team provides highly specialised services, capable of advising clients throughout the project lifecycle—from development, licensing, and financing to implementation, operation, and subsequent transactions.

João Marques Mendes, who stands out for his consistent experience in monitoring energy projects and his solid understanding of the regulatory issues affecting the sector. His approach is centred on clear and pragmatic advice, which facilitates decision-making for clients during critical project phases."

2025 Energy and Natural Resources Recommended Tier 2
2021 Energy and Natural Resources Recommended Tier 2
Chambers Europe
2026 Energy and Natural Resources law Recommended Tier 2

"PLMJ's profound knowledge on all legal aspects, but moreover its agility and technical capacity which is helping us on developing new and disruptive business models sets it apart."

2026 Energy & Natural Resources (International) Recommended Tier 3

"PLMJ has a very capable energy team that frequently assists international energy companies with regulatory, corporate and financing mandates. The firm is also experienced in providing support on oil and gas projects. It is also active on renewable energy matters, providing guidance on various biofuel and solar projects, and is regularly appointed to advise on work in Angola and Mozambique."

2025 Energy and Natural Resources law Recommended Tier 2
2023 Energy and Natural Resources law Recommended Tier 2
2023 Energy and Natural Resources law - International Recommended Tier 3
2022 Energy and Natural Resources law Recommended Tier 3
2021 Energy and Natural Resources law (International) Recommended Tier 3
2021 Energy and Natural Resources law Recommended Tier 3

"Clients depict the firm as "well organised, very knowledgeable and very dedicated.""

2020 Energy and Natural Resources law (International) Recommended Tier 2

"Experienced team in mining and frequently provides support on oil and gas projects, including E&P operations. Further active on renewable energy matters, advising on various biofuel and solar photovoltaic projects."

2020 Energy and Natural Resources law Recommended Tier 2

"Clients depict the firm as "well organised, very knowledgeable and very dedicated.""

2019 Energy and Natural Resources law (International) Recommended Tier 2

"Strong team that frequently assists international clients from the energy sector with regulatory, corporate and financing mandates. Experienced in mining and frequently provides support on oil and gas projects, including E&P operations. "

2019 Energy and Natural Resources law Recommended Tier 2

"Clients praise the firm's international presence, highlighting its strong local support with experienced lawyers in several areas."

Chambers Global
2020 Mozambique - General Business Law Recommended Tier 2
2020 Angola - General Business Law Recommended Tier 3
IFLR1000
2025 Project Development - Energy: PLMJ Colab - RVA Advogados Recommended Tier 2
2025 Project Development
2025 Oil & Gas
2025 Project Development: PLMJ Colab - RVA Advogados Recommended Tier 2
2025 Utilities
2024 Energy
2024 Oil & Gas
2023 Angola | Oil & Gas
2021 Angola| Oil & Gas Recommended Tier 2
Other Awards
2025 Leaders League - Energy Law
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