Sarah Lajugie



Sarah Lajugie practices international arbitration – both commercial (ICC, AAA/ICDR, SAC) and investor-state (ICSID) – in an array of sectors covering energy (including renewables) and construction.

Sarah’s international experience includes arbitrations before major arbitral institutions conducted in English and French. She represents clients in the energy, infrastructure, technology, and pharmaceutical sectors in cases involving changes to regulatory regimes, post-M&A/JV disputes, licensing and software disputes, and FIDIC contract terms and conditions (EPC and electrical engineering). Her most recent cases include an investor-state arbitration representing over forty clients in a dispute under the Energy Charter Treaty, and advising a multinational energy company on its infrastructure project and related contracts in France and Italy.

Sarah registered with the Paris Bar in December 2020 after graduating from the Versailles University. She spent a year in Shanghai studying business and practicing Mandarin and has a good knowledge of Spanish following her dual-major undergraduate degree in Private Law and Foreign Languages.

Before joining Orrick, Sarah trained with international law firms in Paris and Shanghai and worked at EDF, providing her with a deep understanding of the electricity and power generation sector. Sarah also has experience in innovative, technical sectors, having written on matters involving hydrogen and space.

Sarah coached and acts as arbitrator at the Willem C. Vis (East) International Commercial Arbitration Moot.

    • Representing a group of 44 European investors (companies and individuals) in an ICSID arbitration against Romania in a renewable energy dispute.
    • Representing an American technology company in an ICC arbitration under French law seated in Geneva against a French energy company in a software dispute.
    • Representing a German energy company in an ICSID annulment proceeding against the Kingdom of Spain in a renewable energy dispute.
    • Advising an Israeli biotech group of companies in an SCIA (now SAC) arbitration under New York law seated in Geneva in a post-M&A IP rights dispute.
    • Advising an American energy company on its dispute resolution options in a transnational European construction project at the main contract and subcontract levels under French law.
    • Representing a French non-profit organization to recover assets bequeathed to it in France, Switzerland, and Spain (Pro Bono).