Over the last two decades a large number of energy policy changes have occurred specifically with regards to renewable energy. This paper considers how these changes in renewable energy policy affect the production efficiencies of power plants that use renewable and/or nonrenewable energy inputs for electricity production. Using nationwide plant level data from 2003 – 2012 pure technical efficiency is estimated. This study considers the efficiencies of both renewable and nonrenewable energy sources. In addition, this study considers how state level renewable energy policies affect the efficiencies of power plants. In general, this study finds that renewable energy policies do not reduce the efficiencies of electricity generation from a technical aspect.


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