Nov
Biomass
Biomass is a very important renewable energy source for the United States in the future. Since 2000, biomass has been the largest source of renewable energy for the United States, making up 47% of the renewable total and 4% of all energy sources. Biomass is also the only viable renewable alternative to oil as a liquid transportation fuel. Starting this year, ethanol (biomass in its fuel state) will be produced at a rate of about 4.4 billion gallons annually. Biomass will be very important as a renewable energy source.