Lilia Alonzo is counsel in the firm’s Mexico City office and a member of Mayer Brown’s Global Energy and Infrastructure Group. She advises clients on infrastructure, oil and gas, power and corporate matters with a focus on Mexico. Lilia is experienced with Mexico’s logistics industry as she worked as in-house lawyer in a major carrier company and serve as external counsel for a Mexican railway concessionaire. Through her career, she has advised major transport companies in regulatory and corporate matters. She has also participated as Mexican counsel for M&A deals within a broad range industries, including transport, power, oil and gas, consumer goods and telecommunications. Her experience includes providing legal advice with respect to investments, corporate restructurings and divestments for highly regulated industries.



  • CET Istmo. Advised China Electric Power Equipment and Technology, Co., Ltd. (CET), a wholly-owned subsidiary of State Grid Corporation of China, in its participation in the public auction conducted by CFE Transmission, subsidiary of the Mexican Federal Electricity Commission (CFE), for the award of a services contract for the construction, operation and maintenance of a high voltage direct current (HVDC) transmission line (the first one in Mexico), with an approximate investment of USD 1.7 billion, which will transport clean energy in the states of Oaxaca, Morelos, Estado de México, Veracruz, Puebla and Mexico City in Mexico.
  • CET Baja. Counseled CET in its participation in the auction conducted by the Mexican Ministry of Energy (SENER) for the award of a services contract for the construction, operation and maintenance of a HVDC transmission line, with an approximate investment of USD 1.1 billion, for the interconnection between the Interconnected National System (SIN) and the Baja California Electric System (BC).
  • Siemens Financial Services, Inc., Advice SFS in its USD $20'000,000 investment in Delaro, S.A.P.I. de C.V., company developing a wind farm with a capacity of 117 MW in the municipality of Reynosa, State of Tamaulipas, Mexico. Delaro is sponsored by Thermion Energy, a Capital Development Certificates Trust (CKD) that raised MXN $7,306 million in the Mexican Stock Exchange to develop a dozen of wind and solar power plants over the next five years.
  • Kaixo Solar. Counsel to BAS Projects Corporation, a Spanish developer, in the sale of a 75% interest in a 64MW solar power project in Chihuahua.
  • X-Elio. Represented X-Elio as sponsor, in a $37 million financing package for the construction and maintenance of a 74MWp photovoltaic solar plant, located in Guanajuato, Mexico.
  • X-Elio. Represented X-Elio as sponsor, in a $38 million financing package for the construction and maintenance of a 93.7MWp photovoltaic solar plant, located in in Ascension, Suarez (Chihuahua) in Mexico.
  • X-Elio. Represented X-Elio as sponsor, in a $100 million financing package for the construction and maintenance of a 200MW photovoltaic solar plant, located in the city of Navojoa in the state of Sonora, in Mexico.
  • GE. Advised GE on the risk assessment and structuring of a potential acquisition of 49% of the equity interests of a company with a portfolio of almost 800MW, including wind and solar projects. Given the market share of the target and the potential investors, the transaction required legal advice from multiple jurisdictions from a corporate and antitrust perspective.
  • 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.
  • Petronas. Representing Petronas in the negotiation and drafting of multiple farm-out agreements and joint operating agreements in connection with 10 acquired deep water blocks. We also advised Petronas on the prequalification process of the bid rounds.
  • Repsol. Represented Repsol Downstream Mexico S.A. de C.V., and affiliate of Repsol S.A., in the negotiation of agreements securing more than 750,000 barrels of storage capacity in three different fuel storage terminals in Mexico, as part of the company´s plans to grown its downstream logistical network in the country. 
  • Cydsa Storage. Represented Goldman Sachs as lead arranger, administrative agent and lender of a $80 million USD syndicated loan to finance Cydsa’s salt caverns in Veracruz.
  • 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.


  • 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



  • México