Book excerpt: Access to sustainable energy is essential for development, poverty reduction and food security. Rwanda, like many other developing countries, is working on identifying sustainable energy solutions to ensure access to energy. Bioenergy is one possible form of renewable energy that countries are looking at to supply part of their energy portfolio. Rwanda currently relies on traditional biomass for energy supply, and shifting away from traditional biomass use would lower its dependency on traditional biomass and improve access to modern sustainable energy forms. Sustainable bioenergy interlinks closely with the agriculture sector, therefore it is necessary to find specific options that minimize negative impacts on the environment and food security. This accomplishes the dual purpose of energy security and food security. This report assesses the use of agriculture residues for the production of bioenergy in Rwanda. The methodology used for the assessment is the Bioenergy and Food Security (BEFS) approach of the Food and Agriculture Organization of the United Nations (FAO). The report provides a detailed assessment of the potential of crop, livestock and woody biomass availability for the production of off-grid electricity solutions and cooking fuels. Through the assessment, a number of specific bioenergy pathways are identified as suitable for bioenergy production. These options should be carried forward for piloting in the country and ground truthing.