ZeaChem starts construction in Oregon, but plans elsewhere have stalled or been scaled back.
Precise combustion control cuts fuel consumption by more than 30 percent.
A study says 35 percent of electricity could come from solar and wind--without expensive new backup power plants.
Italian-Russian reactor could be the first to reach a major milestone.
But BP's "top kill" method to stanch the spill could also break it wide open.
Economists and utilities say the draft legislation could help avoid costly regulations.
Utilities are installing devices that make ice at night to replace air-conditioning during times of peak power demand.
A layer of optical fiber bristles doubles the performance of organic solar cells in tests.
Levant Power saves fuel by turning road shocks and vibrations into electricity.