Poor communities living off the grid turn to kerosene lanterns for lighting. But these are costly, polluting and dangerous. Switching to solar energy makes a lot of sense, but remains unaffordable. For this reason entrepreneurs are innovating. Check out Angaza Design’s solution—internal custom hardware and a cloud-based energy management platform that allows customers to pay for “energy units” just as they buy credit for their cellphones. This reduces upfront cost to make solar affordable!