<P> 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 . Energy consumption has 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 is now largely met through imports . </P>
<P> 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 . Energy consumption has 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 is now largely met through imports . </P>
what is the largest source of energy in the united states
what is the largest source of energy in the united states
fossil fuels
fossil fuels