Kolar District has a biogas potential, which can satisfy as much as 30- 40 % of domestic energy need in rural areas and at least 20% energy need of the total District. But unfortunately only about 5% of the potential is been tapped so far. If the untapped potential is tapped properly then energy crisis in rural Kolar can be minimised to large extent and tree felling can be stopped to a significant extent. Various reasons for not installing biogas plants are listed in Fig.1.

First biogas in Kolar was installed in 1970, since then though there is gradual progress in its use, its promotion has many constraints. Economy is the foremost imporatant to promote energy sources, which is evident from the fig.1, where as much as 60% of the rural population could not avail biogas plant because of economic CONSTRAINTS. Other factors such as awareness, convenience, raw material, space problem, peoples' interest etc. also hampers biogas technology spread. Our study reveals the willingness of the people to install biogas plant provided Governments help them on economic front. In fact subsidy is the major boosting factor in biogas spread and success in the area. though there are many lacunae in the way subsidy is given.