Almost every rural household in the developing countries, including Afghanistan, maintains a few animals. The dung from these animals can be used to produce methane gas, also called biogas. Biogas is a high value fuel, which can be burnt with high efficiency. With regards to cooking, the efficiency is 3.5 times higher than that of fire wood. The production of biogas has important agricultural advantages as well. Digested dung or slurry can be used as an organic fertilizer to increase the crop yields. In cooperation with QRTDW, IHFD is able to construct dome type plants in eight different size (4, 8, 10, 15, 20, 35 and 50) cubic meters.