Regulators around the world are faced with complex issues ranging from securing the supply of energy, to meeting public policy objectives and protecting the environment. Current developments in the energy sector present serious challenges for policymakers leading a vital transition—a rise in the deployment of cost-effective technologies, such as energy efficiency, renewable energy resources, and storage, coupled with a host of new market players and policies to ensure a fair playing field for all market participants. Ranjit Bharvirkar of the Regulatory Assistance Project teamed up with authors from the World Resources Institute, Prayas Energy Group, International Energy Initiative, and UnisonGroup to identify key issues and considerations for emerging nations as they develop their electricity grids. Drawing on experiences from Brazil, China, India, and Kyrgyzstan, the authors outline best practices for electricity planners and utilities faced with these current trends, in order to ensure clean, reliable, and affordable power to consumers.