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Guillermo is a corporate lawyer specialising in mergers and acquisitions in the energy and infrastructure sectors.

Guillermo is a partner in the energy and infrastructure practice in the Madrid office. He advises leading Spanish and foreign entities on corporate transactions and restructurings, mergers and acquisitions, joint ventures, private equity deals (LBOs) and energy and  infrastructure related transactions.


He has a law degree and a business administration certificate from the Universidad Pontificia de Comillas (ICADE) de Madrid (Spain). He speaks Spanish and English. Prior to joining the firm, he worked at another international law firm in Madrid.

He is also an Associate Professor at Instituto de Empresa (IE) law School (May 2018 to date). He is a member of the Ilustre Colegio de la Abogacía de Madrid (ICAM – Madrid Bar Association).

Experience & expertise

Selected matters

  • Consorcio Español Alta Velocidad Meca Medina, formed by Spanish leading rail and construction companies such as Abengoa/Inabensa, ACS/Cobra, Adif, Imathia, Indra Sistemas, Ineco, OHL, Patentes Talgo y Renfe, among others, on all legal aspects of the construction of the superstructure, systems installation, maintenance, rolling stock procurement and operation of the Haramain High-speed Railway (HHR) project Phase II, which links the two holy cities of Makkah and Medinah via Jeddah in Saudi Arabia. This is the biggest international contract ever won by Spanish companies and the first construction of a high-speed AVE (Alta Velocidad Española) line outside Spain
  • DIF Infrastructure on the €76 million acquisition of 33.34% of OHL's stake in the New Toledo hospital PPP project, considered the largest hospital complex in Europe
  • CAF, a Spain-based manufacturer of components for railway vehicles, on the acquisition of the Reichshoffen production site in France and the Coradia Polyvalent and TALENT3 train platforms in Germany from Alstom
  • Acek Energías Renovables and Clear Wind Eólica on the sale of 100% of Elawan's renewables platform located in 13 jurisdictions to Orix
  • Noatum on the process of its €600 million disposal to Abu Dhabi Ports Group
  • a world leading asset manager on the acquisition of a leading bioethanol producer in Europe with assets located in Spain and France through a competitive auction process
  • Engie, together with Crédit Agricole Assurances, on the acquisition of up to 100% of the share capital of the Spanish company Eolia Renovables from Alberta Investment Management Corporation