However, most of the dry dung is used for burning (Murty, 1985).Source wise, energy consumption in the household sector in the rural areas is as follows: non-commercial sources like fuel wood (68.5%), animal dung (8.3%); commercial energy sources like oil (16.9%), coal (2.3%), electricity (0.6%) and others (3.4%) (Vimal and Tyagi, 1984).Energy sources can be broadly divided into three distinct groups: fossil fuels, fissionable nuclear fuels and non-fossil, non-nuclear energy sources. Inspite of their outstanding virtues, fossil fuels have two insurmountable drawbacks. Firstly, these are non-renewable and thus supply of such fuels is either approaching exhaustion or getting more difficult to procure due to transport bottlenecks and steep hike in their price level. Secondly, their continued and increasing use creates environmental problems. Like fossil fuels, fissionable nuclear fuels also suffer from two serious drawbacks. Their supply from relatively cheap sources is drying up even for the most advanced countries.