The Economist | Solar lighting: Lighting the way
WHICH plastic gadget, fitting neatly in one hand, can most quickly improve the lives of the world’s poorest people? For the past decade the answer has been clear: the mobile phone. But over the next decade it will be the solar-powered lamp, made up of a few light-emitting diodes (LEDs), a solar panel and a small rechargeable battery, encased in a durable plastic shell. Just as the spread of mobile phones in poor countries has transformed lives and boosted economic activity, solar lighting is poised to improve incomes, educational attainment and health across the developing world.
As previously happened with mobile phones, solar lighting is falling in price, improving in quality and benefiting from new business models that make it more accessible and affordable to those at the bottom of the pyramid. And its spread is sustainable because it is being driven by market forces, not charity.