Praised for its ‘technical expertise’ and strong ’business acumen’, the team at Payet, Rey, Cauvi, Pérez Abogados is experienced advising on the planning and development of infrastructure projects and often assists with the negotiation of concession contracts and commercial contracts. Co-founding partner Alonso Rey and Michelle Aramburú share leadership of the practice. Rey is well-versed in handling project finance and PPP matters, while Aramburú advises on the financing of solar power plant projects and the negotiation of concession agreements. Also noted are Gerardo Soto, whose broad practice takes in public law, environmental matters and project development; and Juan Antonio Egüez, who advises on project finance matters. Principal associate Sebastián Gamarra supports on the regulatory aspects of port modernisation projects and contract review. Karen Ángeles departed the team in September 2025. However, the practice was notably strengthend in April 2026 with the arrival of administrative law and projects specialist Angie Umezawa from Philippi Prietocarrizosa Ferrero DU & Uria.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Client satisfaction: NPS ®
Testimonials
Collated independently by Legal 500 research team.
- Michelle Aramburú is our main contact; she provides exceptional service, is organised, and excellent at managing projects. Gerardo Soto is an advisor. Juan José Cauvi is the most experienced partner.
- The Payet team stands out from other firms due to its excellent support throughout the process. They respond quickly, meet their commitments, and have a large team with diverse specialisations to provide comprehensive advice on a project. Another very significant point for us, as clients, is that they operate in a highly ethical environment.
- The team's key differentiator lies in its ability to combine technical excellence with a deep understanding of the client's business. They don't just issue legal opinions; they contribute strategic insights, anticipate scenarios, and support decision-making with a comprehensive view of risk.
- The practice of Payet, Rey, Cauvi, Pérez Abogados is distinguished by a rare combination of technical expertise, business acumen, and the ability to execute in complex contexts. It is not merely a team with a high level of legal expertise, but a strategic partner that understands the operational and regulatory logic of the industries in which it operates, enabling them to anticipate risks and propose viable, not just theoretical, solutions.
Key clients
- América Móvil Perú
- FCC Aqualia
- Perú Energía Renovable
- Mota Engil Perú
- Pluz Energía Perú
- Canada Pension Plan Investment Board (CPPIB)
- Aqualia PTAR Chincha
- Transportadora Callao
- Grupo Tramarsa
- Cosco Shipping Ports Chancay Peru
Work highlights
Advised Canada Pension Plan Investment Board on the acquisition of a Peruvian power generation company for $3.4bn.
Advised Grupo Tramarsa on the financing of the Matarani Port modernisation project.
Advised Perú Energía Renovable on financing the construction of the Illa Photovoltaic Solar Power Plant (CSF Illa) in Arequipa.
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Alonso Rey; Michelle Aramburú
Other key lawyers
Gerardo Soto; Juan José Cauvi; Juan Antonio Egüez; Sebastián Gamarra; Angie Umezawa