Sericulture is a booming business all over Kolar. Mulberry (Morus alba) is the plant species which serve as food for silk warms, therefore much of the agricultural land in the area is under Mulberry plantation. During different activities of silk production different kind of waste is generated which is effectively used as a source of energy in the area. During silk rearing huge amount of waste in the form of small twig and branches is produced, which is effectively used for cooking and water heating needs in the area. Andarhalli (a village) has undergone drastic shift from firewood to agriculture waste, where wastes cater 20% of the domestic energy need. Even the waste cocoons are dumped into the biogas pit along with cattle dung. Interestingly, it is seen that the biogas production is better with waste cocoon in it.