Deadline: 2019-11-10 Award: $20,000 Open to: Everyone*
A simple $25 solar lamp creates enormous benefits for developing world families. Lamps create massive cost savings, allow children to study more, and reduce household fire danger. In three months, sell 500 solar lamps to rural or urban low-income homes, generate US $5,000 in revenue, and plan to scale to 25,000 homes in two years. A successful model will be evidence-based, will include continuous monitoring and testing, and a commitment to change if evidence suggests your approach is not working.