This Practice Note on energy sector disputes considers how to pursue a claim in an energy dispute. This includes a broad range of claims, the common factor in which is that they arise in the energy industry and so will comprise claims relating to oil and gas exploration and production, the construction and operation of facilities for processing and transporting hydrocarbons, the generation of power and sale of the energy. Providing hypothetical examples, it considers: choice of law and jurisdiction, arbitration or litigation, foreign law and state immunity, serving proceedings and enforcement, understanding, formulating and proving the claim, non-contractual claims and stakeholder issues.