Analysts at the Department of Energy's Lawrence Livermore Labs have run the numbers on the US energy use in 2009, and come up with similar results to those obtained when examining the country's carbon emissions: energy use is dropping at a pace that is faster than would be expected based on the slowing economy alone. Even better, the growth in renewable energy, coupled with increased use of natural gas, is displacing significant amounts of coal.

The release of the analysis comes complete with the above excessively complicated chart that shows where all the energy came from and went to during 2009. It's a bit difficult to parse, but shows that the US remains heavily reliant on fossil fuels, which account for nearly 80 quadrillion of the 95 quadrillion BTUs (Quads) that the US consumed last year. But the chart doesn't show the trends, which may be more significant.

According to the Livermore analysts, both economics and higher-efficiency appliances and vehicles helped push down the energy use last year, dropping consumption from 2008's 99 Quads. Coal and petroleum use both declined significantly (coal was down by 10 percent), with more efficient vehicles accounting for much of the latter. Lowered electricity use accounted for much of coal's drop, as did displacement by natural gas. But total natural gas use also dropped, at least in part because solar, hydro, and geothermal power all increased slightly, and wind power increased significantly. It's now at 0.7 Quads, and on pace to clear a full Quad within the next couple of years.

Renewables and nuclear are now supplying nearly 17 percent of the country's annual supply of energy, a fraction that's likely to grow if current trends continue. And most indications are that the trends will continue. The US auto fleet's fuel efficiency is slated to rise over the next several years, and the Obama administration is pushing to approve further wind and solar projects.