SBS: A quiet corner of Indonesia is trying to become a model of clean energy use. Sumba Island is aiming to function completely on renewable energy sources by 2025. Only one year ago, most people the island had no electricity at all. Today, however, hydro-power and solar panels have brought simple advances to the daily lives of the residents. When the sun sets in Sumba, nearly half the population is plunged into darkness. But now an energy revolution is taking place. In a remote village in the mountains...