This report builds on earlier Pew Center analyses of the state role in climate policy development. The proliferation of RPSs at the state level provides real-world models of whether a federal RPS may be a feasible option to increase the nation’s use of renewable energy sources as part of a larger energy and climate change policy. In addition to examining challenges and opportunities inherent in policy design and implementation, the report includes case studies of five states: Texas, Pennsylvania, Colorado, Massachusetts, and Nevada.
Link
http://www.pewclimate.org/docUploads/RPSReportFinal%2Epdf