Wind, solar, geothermal, biofuel, hydro, and other non-traditional energy sources show promise as alternatives to fossil fuels and may provide a sustainable source of energy in increasingly uncertain energy markets. However, these new sources of energy face their own set of political, administrative, and legal challenges. Underexplored in both academic and policy settings, this book provides valuable insights on how existing regulatory regimes in the United States interact with the broad goal of developing green energy and curbing global climate change.