Renewable energy technologies need to be implemented to improve the current lack of access to energy on the African continent. However, the implementation of renewable energy technologies in Africa often fails, or the technologies are found to be unsustainable in the longer term. Previous research determined eleven factors that should be taken into account for the selection of sustainable, renewable energy technologies in Africa. The purpose of this research was to confirm and build upon these findings by means of eight case studies that were conducted in Rwanda, Tanzania and Malawi. Various individuals from implementing agencies, as well as end users of the various technologies, were interviewed, while secondary data were gathered in the form of project reports and other documentation. The analyses of the data confirm the importance of the eleven factors that were previously identified. A final set of thirteen factors that should be used for the selection of renewable technologies are proposed.