FOR Nggaba Ndewa, electricity is magic.Until last year, the 12-year-old boy had never owned a television, nor even used lightbulbs. "My home was very dark at night. We usually used oil lamps," he told Tempo last month.

All that changed in 2014 when Nggaba's hometown was at last connected to a power grid-not one run by state-owned electricity company (PLN), however, but to a network of wind-powered turbines perched on a nearby hill.

Dozens of five-