U.S. Energy Consumption by Energy Source, 1999-2006 (Quadrillion Btu)
| Energy Source | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 |
| Total | 99.398 | 100.161 | 100.051 | 97.971 | 97.684 | 96.563 | 98.891 | 96.763 |
| Fossil Fuels | 85.453 | 86.451 | 86.191 | 84.386 | 84.994 | 83.138 | 84.965 | 82.65 |
| Coal | 22.452 | 22.795 | 22.466 | 22.321 | 21.904 | 21.914 | 22.58 | 21.623 |
| Coal Coke Net Imports | 0.061 | 0.044 | 0.138 | 0.051 | 0.061 | 0.029 | 0.065 | 0.058 |
| Natural Gas [a] | 22.19 | 22.583 | 22.931 | 22.897 | 23.558 | 22.861 | 23.916 | 23.01 |
| Petroleum [b] | 39.958 | 40.393 | 40.294 | 38.809 | 38.227 | 38.333 | 38.404 | 37.96 |
| Electricity Net Imports | 0.063 | 0.084 | 0.039 | 0.022 | 0.072 | 0.075 | 0.116 | 0.099 |
| Nuclear Electric Power | 7.214 | 8.16 | 8.222 | 7.959 | 8.143 | 8.033 | 7.862 | 7.61 |
| Hydroelectric Pumped Storage [c] | - | - | - | -0.088 | -0.088 | -0.09 | -0.057 | -0.062 |
| Renewable Energy | 6.922 | 6.444 | 6.261 | 6.15 | 5.893 | 5.465 | 6.145 | 6.587 |
| Conventional Hydroelectric | 2.869 | 2.703 | 2.69 | 2.825 | 2.689 | 2.242 | 2.811 | 3.268 |
| Geothermal Energy | 0.343 | 0.343 | 0.341 | 0.331 | 0.328 | 0.311 | 0.317 | 0.331 |
| Biomass | 3.374 | 3.154 | 3.023 | 2.817 | 2.706 | 2.777 | 2.893 | 2.873 |
| Solar Energy | 0.072 | 0.066 | 0.065 | 0.064 | 0.064 | 0.065 | 0.066 | 0.069 |
| Wind Energy | 0.264 | 0.178 | 0.142 | 0.115 | 0.105 | 0.07 | 0.057 | 0.046 |