Underwriters Laboratories Inc.
     

Breakdown of U.S. Electric Power Industry Net Generation (2003):

  • Coal, 50.8 percent


  • Nuclear, 19.7 percent


  • Natural gas, 16.7 percent


  • Hydroelectric, 6.9 percent


  • Petroleum, 3.1 percent


  • Other renewables, 2.3 percent


  • Other gases, 0.4 percent


  • Other, 0.2 percent


Sources: Census Bureau, Energy Information Administration, Environmental Protection Agency