Cattle manure, human excreta and agriculture residues are used in anaerobic bioreactors
in many parts of the world to produce methane gas, which is used for the purpose of
cooking and lighting. Since such waste materials are readily available in farms, rural
people of many developing countries have been benefited from this technology.
Besides, this technology is cheaper and simpler, thus gaining popularity throughout the
world. Nepal is one of the least developed countries with the vast majority of people
involved in subsistence agriculture. The use of biogas technology in Nepal has benefited
the country in improving health, environment, economy and energy conservation. In this
paper, we present the state of the biogas sector in Nepal.