This chapter explores the global energy governance architecture as the "overarching system of public and private institutions that are valid or active" in the energy field. It focuses on intergovernmental energy organizations that trace their origins to the post-World War II emergence of oil producers in what is called the Global South, and the impact of the 19070s oil crises on oil-consuming advanced economies in the North. It considers the oft-overlooked role of the United Nations and several of its constituent parts, including the climate convention, in governing energy. It examines the benefits and challenges of building a global energy governance architecture that is more integrated internally while at the same time better able to capitalize on overlaps and synergies with other global policy domains, especially those in climate change and international development. The chapter concludes with an assessment of the future of global energy governance, including the prospects for a World Energy Agency.