Wood is the most commonly used biomass fuel for heat and power.
The most economic sources of wood fuels are usually wood residues from manufacturers, discarded wood products diverted from landfills, and non-hazardous wood debris from construction and demolition activities. Use of these materials for electricity generation can recoup the energy value in the material while avoiding landfill disposal. In the future, fast-growing energy crops may become the biomass fuel of choice. The U.S. Department of Energy is working with national labs, agricultural and forestry groups, power companies, and other governmental agencies to make energy crops a viable fuel source in the near future.