According to the latest issue of the U.S. Energy Information Administration's (EIA) "Electric Power Monthly," with preliminary data through to June 30, 2013, renewable energy sources (i.e., biomass, geothermal, hydropower, solar, wind) provided 14.20 percent of the nation's net electric power generation during the first half of the year. For the same period in 2012, renewables accounted for 13.57 percent of net electrical generation.