Increase in U.S. energy consumption 2003-2007 Total - 3.337 Renewables - .663 Fossil Fuels - 2.134
The above graph is derived from the EIA data linked below. It shows the growth in energy consumption in the U.S. from 2003 through 2007 in quadrillion BTUs. The first bar is the total increase over the 5 years. Also shown are (non-nuclear) renewable and fossil-fuel components of that total. Renewables increase was less than 1/3 that of fossil fuels.
The private-auto system consumes 25% of U.S. GDP. A sharp curtailment of the private-auto system of transport is the only the path that can significantly reduce fossil fuel usage.