Even though solar power (through microgrids, solar lanterns and home systems) is the answer to the energy woes for the developing world at large, there are many who cannot pay the upfront cost of installation. Angaza, a new start-up offers their SoLite three-watt home solar system inclusive of an LED light and a solar panel, through a small upfront fee, and a pay-as-you-go model, bearing likeness to mobile phone minutes. Read more here.