The number of Nepali households with biogas plants has hit 150,000, according to the Biogas Support Programme (BSP), which has disseminated biogas technology to 2,617 VDCs in 66 districts, led by Kaski (with 10,686 plants), Tanahu (10,200 plants) and Makwanpur (10,166 plants). Biogas, produced by converting dung, reduces consumption of firewood and kerosene, helps create a smoke-free indoor environment and saves villagers time that they would have used collecting firewood, time that can be used for income generation activities. Biogas also helps to produce organic manure and pesticide, and saves money on firewood, kerosene, chemical fertilizers and pesticide. The plants can also operate for long periods at low cost with little maintenance required.