Marcelo Frazão is the Managing Partner of COSRO and one of Brazil's leading lawyers in the energy and infrastructure sectors.

He advises international clients on complex corporate transactions, mergers and acquisitions (M&A), financial transactions, and major arbitrations involving energy projects. His experience spans the entire energy value chain, including oil and gas, renewables, biofuels, and energy transition projects. Throughout his career, Marcelo has worked on transactions exceeding USD 8 billion and on disputes exceeding USD 1.7 billion. He is recognized by Chambers & Partners, The Legal 500, and Leaders League among the most prominent lawyers in the Brazilian market.

Experience

Marcelo Frazão serves as Managing Partner of COSRO, where he leads our firm’s transactional practice and is highly regarded for his expertise in complex, high-value M&A transactions, joint ventures, and commercial contracts involving energy assets. His work spans the entire energy value chain, encompassing traditional oil and gas, renewables, biofuels, and energy transition projects. Marcelo primarily counsels international clients with interests or operations in Brazil, including project developers, offtakers, construction and shipping companies, global suppliers, and financial institutions. Over the course of his career, he has been involved in transactions exceeding USD 8 billion in asset value

Marcelo is also distinguished for his highly regarded experience in dispute resolution, particularly in high-stakes arbitration. He has represented clients in disputes totaling more than USD 1.7 billion in the Brazilian market over the past five years, with a focus on energy and construction arbitrations

His work also includes innovative energy production and decarbonization initiatives, including advanced biofuels (such as renewable diesel, SAF, and biomethane), low-emission hydrogen and ammonia, carbon capture and storage (CCS), and carbon market mechanisms. He works closely with clients to develop and implement strategies for reducing carbon emissions, always with an emphasis on ensuring energy security and accessibility

Specialties

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

• Law Degree from the Fluminense Federal University
• Post-graduate Degree in Corporate Law from IBMEC
• Master of Laws (LLM) from the London School of Economics and Political Science (LSE)

Alliances and Associations

• Ordem dos Advogados do Brasil, Seccionais de São Paulo e Rio de Janeiro
• Association of International Energy Negotiators (AIEN)
• Foundation for Natural Resources and Energy Law (FNREL)
• Associação Brasileira de Direito Marítimo (ABDM)
• Câmara de Comércio Brasil-Noruega (NBCC)

Languages

Portuguese, English, Spanish