EPA's Proposed Clean Power Plan: Conversion to Mass-Based Emission Targets [March17, 2015] [open pdf - 360KB]
"The Environmental Protection Agency (EPA) proposed a rule in June 2014 that would require states to address carbon dioxide (CO2) emissions from existing fossil fuel-fired electric generating units. The proposal would create CO2 emission rate goals--measured in pounds of CO2 emissions per megawatt-hour (MWh) of electricity generation--for each state to achieve by 2030 and an interim goal in 2029, based on the average of a state's emission rates between 2020 and 2029. EPA's proposal would allow a state to establish its emission reduction requirements by converting the interim (2029) and final (2030) emission rate targets to mass-based targets--measured in metric tons of CO2. A state might consider using a mass-based target for a variety of reasons, including the opportunity to link with existing mass-based programs or to continue existing, state emission reduction goals. In addition, this report indicates that the mass-based reduction requirements may be less stringent in some states than the emission rate requirements."
CRS Report for Congress, R43942
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html