This study seeks to help inform federal and state policymakers, energy producers, investors, and consumers about the potential energy market impacts of state and federal policy decisions associated with the Clean Power Plan as proposed. The report outlines the potential electric power sector and broader energy market impacts of policy design options and implementation choices by modeling the Clean Power Plan. In addition to mapping out the impacts on the electric power sector and consumers, the report also assesses the impact of the Clean Power Plan on potential changes in natural gas and coal production at the national and regional level.