Praised for its ‘high level of professionalism, technical knowledge and commitment’, Demarest Advogados’ power practice advises on complex transactions, as well as the structuring, development, implementation and financing of projects across the generation, distribution, and transmission segments. The team also handles administrative proceedings before ANEEL. São Paulo-based Rosilane Costa Barros, a transactional and regulatory specialist, co-heads the practice alongside regulatory and public law partner Henrique Reis and Maria Beatriz Grella Vieira, who focuses on M&A and corporate mandates. Reis and Grella Vieira joined the Belo Horizonte and São Paulo offices, respectively, from L.O. Baptista Advogados in February 2025, accompanied by a group of associates.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘Demarest's energy team is very focused on business and always seeks to serve the client in an agile and efficient manner.’
‘Unlike others who are characterised by extreme legal security, Rosi, Henrique, and Maria Beatriz understand that any business involves risk and seek the best way to make it viable.’
‘It is one of the leading law firms in Brazil. All activities have always been carried out with excellence, speed, attention and extreme quality. I trust them with my eyes closed in all operations involving energy, capital markets, corporate and M&A matters.’
‘The services provided are of excellent quality and the team is very competent.’
‘Demarest is a strategic legal partner, always demonstrating a high level of professionalism, technical knowledge and commitment. The team is qualified, attentive and agile.’
‘Henrique Reis assists us with excellence. Competent, available, practical and extremely attentive in all work.’
Key clients
- QatarEnergy
- Murphy Oil Corporation
- Vibra Energia
- World Kinect Corporation (Terrana)
- Petrom Produção de Petroleo e Gas
- Royal Fic
- Comgas
- National Oilwell Varco
- Maha Energy
- CHC Helicopters
- Noble Energy
- Maersk Supply Services
Work highlights
Advised V.tal on three transactions (one with Atiaia Renováveis and two with Atlas Renewable Energy as counterparties) regarding the structuring of power self-generation projects for the power supply for its data centres.
Advised Companhia Riograndense de Saneamento (CORSAN) on structuring and implementing a power self-generation project to supply power to its operational units.
Advised Pátria Infra Crédito on a R$120m investment in AXS Energia's debentures, used to fund nine photovoltaic plants in Paraná, Mato Grosso, Goiás, and São Paulo.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Rosi Costa Barros; Maria Beatriz Grella Vieira; Henrique Reis
Other key lawyers
Thais Araujo Tarelho; Arthur Azerêdo