Founded in 2015 in Senegal, Oolu's mission is to provide off-grid households with solar products at an affordable price. For a monthly fee paid through mobile money, Oolu installs a pay-as-you-go solar kit that can power various in-home devices such as lights, phone chargers, radios, fans, and televisions, and performs any necessary maintenance, including free battery replacements and system upgrades. The company's focus in off-grid rural areas and has expanded to 6 countries: Mali, Niger, Burkina Faso, Nigeria, and Cameroon.