Marcelo Frazão is the Managing Partner of COSRO and a leading Brazilian lawyer in the energy and infrastructure sectors
He advises international clients on complex M&A, corporate, and financial transactions, as well as high-stakes arbitration involving major Energy projects. His experience spans the full energy value chain, covering traditional oil and gas, renewables, biofuels, and energy transition projects. Over the years, Marcelo has advised on transactions exceeding USD 8 billion and disputes over USD 1.7 billion. He is recognized by Chambers & Partners, The Legal 500, and Leaders League among Brazil’s most distinguished lawyers in the market
Ranking
Chambers and Partners, Energy & Natural Resources, Brazil, 2024, 2025 e 2026
Leaders League, Energy & Natural Resources, Brazil, 2024, 2025 e 2026
Legal 500 Latin America, Energy & Natural Resources, Brazil, 2024, 2025 e 2026
Experience
Marcelo primarily advises international clients with interests or operations in Brazil, including project developers, offtakers, construction and shipping companies, global suppliers, and investors. As for disputes, he has represented clients in disputes in major cases involving the construction, chartering, and financing of floating terminals, offshore vessels, and global suppliers in the oil and gas sector
He also advises on innovative energy production and decarbonization initiatives, including advanced biofuels (such as biogas, biomethane, renewable diesel, SAF, ethanol, and methane), low-emission hydrogen and ammonia, carbon capture and storage (CCS), and carbon market mechanisms. Marcelo works closely with clients to design and implement strategies for reducing carbon emissions, with a constant focus on energy security, sustainability, and accessibility
Expertise
Sectors
Decarbonization / Energy / Infrastructure / Mining / Shipping / Technology
Areas of Practice
Government Contracting / Commercial Contracts / EGVC / Project Finance / Regulatory and Public Policies / Corporate/M&A / Sustainability
Qualifications
Bachelor’s degree in Law from the Federal Fluminense University (UFF)
Postgraduate degree in Corporate Law from IBMEC
Master of Laws (LL.M.) from the London School of Economics and Political Science (LSE)
Alliances and Associations
Brazilian Bar Association, São Paulo and Rio de Janeiro Sections
Association of International Energy Negotiators (AIEN)
Foundation for Natural Resources and Energy Law (FNREL)
Brazilian Maritime Law Association (ABDM)
Brazil-Norway Chamber of Commerce (NBCC)
Languages
Portuguese, English, Spanish