American Solar Energy Society (ASES) unveiled its 200-page landmark report, "Tackling Climate Change in the U.S.: Potential Carbon Emissions Reductions from Energy Efficiency and Renewable Energy by 2030." The report illustrates how concentrating solar power (CSP), photovoltaics (PV), wind power, biomass, biofuels, and geothermal power, combined with energy efficiency measures, can displace approximately 1.2 billion tons of carbon emissions annually by the year 2030 -- the magnitude of reduction that scientists believe is necessary to prevent the most dangerous consequences of climate change.

The results of these studies show that renewable energy has the potential to provide approximately 40% of the U.S. electric energy need projected for 2030 by the Energy Information Administration (EIA). After we reduce the EIA electricity projection by taking advantage of energy efficiency measures, renewables could provide about 50% of the remaining 2030 U.S. electric need.