Renewable energy sources account for biggest chunk of new U.S. energy sources in 2007

Renewable energy sources are gaining enough traction to account for the biggest piece of the pie when it comes to gains in U.S. electrical output.

General electrical capacity increased by 2.3% in 2007, according to Electrical Power Annual 2007. Total 2007 electrical capacity was boosted to 4,157 million megawatt-hours, up from 4,065 MWh in 2006.

Net summer capacity increased by 8,673 MW, with wind power accounting for 5,186 MW.

Renewable energy remains but a drop in the bucket, however. Renewables generate 105 million MWh annually, just 2.5 % of total electrical capacity.

The Obama administration needs to put more money into this sector. Reducing energy costs - and doing it more cleanly - will be a bellweather issue this century. We need to get a head start on the world so we can export the technology.