Lilia Alonzo is counsel in the firm’s Mexico City office and a member of Mayer Brown’s Global Energy Group. She advises clients on oil and gas, power and corporate matters with a focus on Mexico. Lilia is experienced with Mexico’s LNG industry, particularly in long-term LNG supply agreements. She has collaborated in the design of strategies to manage and mitigate legal, political and social risks associated with a long-term LNG supply agreement. Within the context of the Energy reform, she has collaborated in the drafting and negotiation of secondary regulation, including the new procurement rules for productive state enterprises. Her experience includes providing legal advice with respect to investments, corporate restructurings and divestments for highly regulated industries.



  • Represented an E&P company before the National Hydrocarbons Commission (CNH) in the bidding processes for Rounds 2.4 and 3.1, resulting in the award of contracts with for E&P in deep waters.
  • Preparation of the legal strategy for the development of a co-investment between a private generator and a state owned productive subsidiary.
  • Legal advisory for the acquisition of a minority stake in a generator awarded with a long-term auction PPA.
  • Participated in the negotiations for one of the first PPAs executed between CFE Calificados, S.A. de C.V. and a private generator.
  • Instrumental in the implementation of the legal strategy of a major upstream participant for starting operations in Mexico. The works performed included corporate governance analysis, participation in Bidding Rounds and compliance of awarded production sharing and license agreements.
  • Instrumental in the preparation of the legal strategy for the authorization and incorporation of the first affiliate company of CFE (Federal Electricity Commission).
  • Within the context of the energy reform and the transformation of CFE into a state-owned productive enterprise, led the preparation and negotiation of the new CFE procurement rules, which introduced international best practices for public procurement. 
  • A key member of a team responsible for designing a strategy to manage and mitigate legal, political and social risks associated to long-term LNG supply agreements entered by CFE and the Camisea Consortium. The design of this strategy required a multi-disciplinary approach given both countries, Mexico and Peru, considered energy security at stake.

Project Finance

  •  Currently advising X-Elio, a Spanish developer, in the financing of two photovoltaic power generation plants in Navojoa, Sonora and Perote, Veracruz.
  • Participated as counsel for the financing of two photovoltaic power generation plants, located in Ciudad Juárez, Chihuahua and San Miguel de Allende, Guanajuato.


  • Legal counsel to SAE (Service of Management and Disposal of Assets) in the preparation of two public tenders for the sale of certain state-owned sugar mills (MXN $3,282 million and MXN $3,556 million respectively).
  • Represented Dish Group interest in the sale of the Mexican Blockbuster business to Grupo Salinas (MXN $408 million).
  • Legal counsel to Nestlé in the sale of its ice-cream line of business to Grupo Herdez (MXN $1,000 million).


Escuela Libre de Derecho, LLB

Cass Business School, City, University of London, MBA


  • Mexico