These two reports demonstrate a renewable energy resource-assessment tool focused on the region of the Economic Community of West African States (ECOWAS). Together, the reports demonstrate the Global Atlas for Renewable Energy at regional level. In each case, a set of maps was created that highlight areas of opportunity for both grid-connected and off-grid power, based in one case on solar energy and in the other on wind energy. The approach used to present renewable resource potential was developed with an international consortium of institutes.