In semi-arid Tumkur district of Karnataka, the villagers of Kodavathi and Yadavanne panchayats, Kunigal taluk, are witnessing a vibrant, silent revolution. Thanks to a package evolved by a group of scientists of the Indian Institute of Science (IISc), Bangalore called Sustainable Transformation of Rural Areas (SuTRA). The development programme hinges on the use of alternative energy fuels.