The Lawyers’ Dream Clause? The Role of the Fair and Equitable Treatment Standard in Balancing State Sovereignty and Investor Rights in the Energy Sector

The fair and equitable treatment (FET) standard has emerged as one of the most frequently invoked and scrutinized protections in international investment law, offering a flexible yet controversial means of protecting foreign investors. Although it is often referred to as a “lawyers’ dream clause,” due to its expansive intepretative potential and the lack of precise legal language has led to inconsistent arbitral interpretations and an increasing number of investor claims. These challenges are particularly notable in the energy sector, where states’ sovereign right to regulate intersects with investors’ expectations of legal stability. This article critically examines the evolving contours of the fair and equitable treatment standard in energy-related investment disputes, identifying the factual and legal circumstances under which tribunals have found fair and equitable treatment violations. It asks whether the existing jurisprudence provides sufficient legal predictability and coherence, particularly in balancing investor protection with the host state’s sovereign right to regulate. This article provides a doctrinal and case-based analysis of the fair and equitable treatment standard, examining its normative evolution, treaty formulations, and interpretative patterns in arbitral practice.