Population growth and urbanisation, along with changes in lifestyle and consumption, lead to large quantities of solid and liquid organic waste from agricultural, agro-industrial and urban activities. In the absence of an adequate waste management system, these can cause harm to human health and the environment. Biogas technologies are unique among renewable energy forms in that they address several challenges in Sub-Saharan Africa in an integrated manner. They enhance the connections and potential synergies between sectors. WABEF – Western Africa Bio-wastes for Energy and Fertilizer - has promoted anaerobic digestion as a way to recycle bio-wastes for energy and fertilisers. As such, the organic matter loop is closed.