Abstract: A waste management simulation method and system is provided. The waste management simulation method includes: providing a graphical user interface for interactively defining a waste management model, wherein the model includes a plurality of waste inputs, a plurality of waste management facilities, and a plurality of waste streams connecting the waste inputs with the waste management facilities, and wherein the graphical user interface enables interactive definition of the waste streams; and determining at least one performance indicator of the model according to the defined waste management model and a forecast of the waste inputs.