Singapore can adopt biodiesel to a greater extent in the bid to reduce GHGs to mitigate climate change. Agricultural land isscarce; hence, making biodiesel produced from food crops unsuit-able as a mitigation measure. Biodiesel production via sources of biomass wastes such as animal fats and plant cellulose materials requires import of raw stocks for processing and is thus unattractive and ineffective for climate change mitigation. On the other hand,a heavily populated city consumes and generates plenty of food wastes which include spent cooking oil that can be feedstock for biodiesel