The World Summit on Sustainable Development (WSSD) held in Johannesburg in 2002 proposed that countries consider adopting a 10% target for energy supply from renewable energy sources. While this proposed target was not adopted by countries, a number of African energy policy makers and professionals felt it would be worthwhile to evaluate the viability of this target, and the benefits that could arise from its realization. This study was therefore initiated to investigate the viability of the target for Kenya. Two technologies were considered – Geothermal and Biomass-based cogeneration, for their potential contribution to electricity supply in Kenya. The study was based on the review of existing literature as well as survey data collection, and interviews with stakeholders.