Biomass energy is derived from plant and animal material, such as wood from natural forests, waste from agricultural and forestry processes, and industrial, human, or animal wastes. Various agricultural residues such as grain dust, wheat straw, and hazelnut, shell are available in Turkey as the sources of biomass energy. Among the biomass energy sources, fuelwood seems to be one of the most interesting because its share of the total energy production of Turkey is high at 21% and the techniques for converting it to useful energy are not necessarily sophisticated. The total forest potential of Turkey is around 935 million m(3) with an annual growth of about 28 million m(3). The consumption of forest biomass compared to total energy has slightly decreased from 22 to 14% during the last decade because the consumption of liquefied petroleum gases is increasing continuously.