Many countries around the world rely on the energy sector for industry, national security, mobility, economy, and countless other benefits. The importance of the energy sector makes disputes likely and necessitates dispute resolution mechanisms. Through International Investment Agreements (IIAs), arbitration has become an integral part of the dispute resolution process in international energy sector disputes. Thus, understanding the arbitration rules and how choosing one set of rules can affect the outcome of an international energy sector dispute becomes an important task. The most prevalent arbitration rules are the International Center for Settlement of Investment Disputes (ICSID) Arbitration Rules, the United Nations Commission on International Trade Law (UNCITRAL) Arbitration Rules, the Stockholm Chamber of Commerce (SCC) Arbitration Rules, and the International Chamber of Commerce (ICC) Arbitration Rules. This thesis examines each of the different arbitration rules and determines which set of rules would be the best choice when initiating an arbitration (as an investor) against a state.