VITALITE combined solar energy with pay as you go (PAYG) technology and microfinance to provide SHSs to Zambian households who have not been able to access reliable energy. The PAYG system provided a solution to the initial investment hurdle for customers who previously could not afford high quality solar home systems due to liquidity and/or credit constraints. The project focused on the pico-solar systems that provide four lamps, phone charging, radio and the possibility to charge a DC television or a fan.