Direct DC Solar (DDS) electricity can inexpensively cook food and charge appliances. Insulating the cooking chamber allows the food to cook with a lower-power (less expensive) solar panel over a longer cooking time. We explain how using a chain of diodes instead of a resistive heater extracts...

Over the past 15 years, Ethiopia has focused on raising electrification rates, mainly by extending the national grid system to more villages and towns. The World Bank funded Electricity Access Rural Expansion Project (Phase 2) was implemented since 2007 to assist the Government of Ethiopia (GoE)...