Bioenergi

The availability of ethanol and biodiesel at the fuel pump is becoming more prevalent. Rising fuel prices, environmental concerns, pressures for oil independence, and Federal energy policy are creating a strong market for renewable energy.

Bioenergy is renewable energy derived from biological sources, to be used for heat, electricity, or vehicle fuel. Biofuel derived from plant materials is among the most rapidly growing renewable energy technologies. In the United States, corn-based ethanol is currently the largest source of biofuel as a gasoline substitute or additive. Growing biofuel demand has implications for the U.S. agriculture sector and rural communities.

http://www.ers.usda.gov/Features/Bioenergy/