This study explores the energy potential of double-stage anaerobic digestion (2S-AD) for organic waste treatment in the eThekwini Metropolitan Municipality of Durban, South Africa. Two scenarios are compared: one using only fruit and vegetable (F&V) market waste, and another combining it with source-separated household organic waste. Results show significant energy generation, with the combined scenario producing 34 t/y of hydrogen and 9,739 MWh/y of electricity. The study addresses waste diversion from landfills and greenhouse gas reduction. By separating the conventional anaerobic digestion process into dark fermentation and methanogenic phases, the system maximizes the recovery of valuable products, contributing to sustainable waste management and renewable energy production in urban areas.