"On August 3, 2015, the Environmental Protection Agency (EPA) released a prepublication version of the final rule known as the Clean Power Plan (CPP). The CPP final rule requires states to reduce carbon dioxide (CO2) emissions or emission rates--measured in pounds of CO2 emissions per megawatt-hour of electricity generation--from existing fossil fuel electricity generating units. EPA estimates that in 2030, the CPP will result in CO2 emission levels from the electric power sector that are 32% below 2005 levels. This report provides an initial analysis of EPA's final rule. The 2015 final rule is substantially different from the rule EPA proposed on June 18, 2014. For example, a major change in EPA's final rule is EPA's establishment of uniform national CO2 emission performance rates for each of the two subcategories of electricity generating units--fossil-fuel-fired electric steam generating units (whether coal, oil, or natural gas) and stationary combustion turbines (natural gas combined cycle)--affected by the rule. These standards are the underpinnings for the state-specific emission rate and mass-based targets."
CRS Report for Congress, R44145
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html