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Guillermo Garcia-Perrote

Guillermo García-Perrote

Senior Associate Australian Registered Foreign Lawyer (Admitted in Spain, England & Wales, not admitted in Australia)

Guillermo is an international arbitration lawyer specialising in infrastructure and energy disputes.



Guillermo regularly represents clients in international arbitrations in major international centres and ad-hoc arbitrations. Guillermo also has expertise in other forms of dispute resolution, including litigation, expert determination and mediation.

Guillermo's breadth of experience allows him to help clients formulate successful strategies to resolve complex cross-border disputes by focusing on delivering strong commercial outcomes including dispute avoidance, investment structuring, project delivery, settlement negotiations and enforcement strategies.

He is based in Sydney, following an increasingly active business relationship between Spain, Australia and the APAC region.

Guillermo qualified as a lawyer in Spain (Madrid Bar) in 2009 and has worked at top-tier law firms in Madrid and London. He is also qualified as a solicitor in England and Wales. At Herbert Smith Freehills, he advises clients on complex cross-border disputes across many sectors and industries concerning a wide range of trade, commercial and financial activities, with a particular focus on construction/infrastructure and energy disputes.

Guillermo’s experience across different forms of dispute resolution allows him to advise clients at every step of the dispute resolution process, providing commercially sensitive advice. This allows Guillermo to help clients with front-end dispute avoidance and risk management issues as well as resolving disputes when they arise.

Guillermo speaks at conferences and seminars, and lectures at universities and master’s programs in relation to both international arbitration and the construction/infrastructure and energy sectors.

  • Leading infrastructure group on a complex dispute including international arbitration proceedings and expert determination proceedings related to a cutting edge renewable energy project in the US
  • Leading energy and construction group on international arbitration proceedings related to an infrastructure project in the Republic of Kenya
  • Leading infrastructure group on a complex cross-border dispute related to the investment on a global satellite operator, including international arbitration proceedings, expert determination proceedings and litigation before national courts
  • The Kingdom of Spain against an international arbitration claim lodged by 25 investment funds based on the Energy Charter Treaty (regarding new Spanish legislation applicable to photovoltaic technology)
  • Leading energy group on international arbitration proceedings against a Chinese state entity related to a major solar energy transaction