The price of small solar systems in East Africa has fallen rapidly over the past decade, but US$70 for a two-light system is still too high for most off-grid households to pay upfront. It would be affordable for many more people with suitable financing to spread the cost, but microfinance isn’t always appropriate or available to fill this gap. UK technology company Eight19 came up with an innovative way to spread the cost of a solar system: the Indigo pay-as-you-go solar home system that is activated by weekly scratchcard payments. The team spun out Azuri Technologies in August 2012 to […]