| Biomass can be used for fuels, power production, and products that would otherwise be made from fossil fuels. Wood is the largest biomass renewable energy resource today but other sources of biomass can also be used. Other sources include food crops, grassy and woody plants, and the organic component of municipal and industrial wastes. Even the fumes from landfills can be used as a biomass energy source. Next to hydropower, more electricity is generated from biomass than any other renewable energy resource in the United States. The 2005 Energy Act mandated that 250 million gallons of ethanol be produced from cellulose materials by 2012. |
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