Fifteen-year-old Shailaja C does not have to inhale toxic fumes from kerosene lamps anymore each time she sits down to study. A student of the Government High School in Kyasamballi, a remote village in Karnataka's Kolar district, Shailaja now uses the bright light of a bottle-sized solar table lamp to study for two hours each evening. Her mother uses the same light for cooking and also carries it as a flash light to shop in the evenings. The village, about 100 km from the tech hub of Bangalore, doesn't have access to electricity. This change in their lives was made possible by Bangalore based social enterprise Solar Electric Light Company (Selco) cofounded by clean-technology entrepreneur Harish Hande. The firm develops sustainable energy solutions and services to underserved households and businesses.