energy

This study provides an evaluation of the performance of five renewable energy technologies used to generate electricity- biomass, geothermal, solar photovoltaics, solar thermal, and wind. The authors compare the actual performance of these technologies against stated projections that helped shape public policy goals over the last three decades. Their findings document a significant difference between the success of renewable technologies in penetrating the U.S. electricity generation market and in meeting cost-related goals, when compared with historic projections.