dominant fuels used to generate electricity in the usa
The majority of this energy is derived from fossil fuels: in 2010, data showed 25% of the nation's energy came from petroleum, 22% from coal, and 22% from natural gas. Nuclear power supplied 8.4% and renewable energy supplied 8%, which was mainly from hydroelectric dams and biomass but also included other renewable sources such as wind power, geothermal and solar energy. As of 2006, energy consumption had increased at a faster rate than domestic energy production over the last fifty years in the U.S. (when they were roughly equal). This difference was largely met through imports.