**3. Materials and Methods**

Organisational and urban structures that are suitable for the creation of comprehensive energy generation systems using various sources, including municipal waste, are big cities and communal special purpose associations. The benefits originating from implementation of waste processing procedures contained in the ERWP model were analysed based on municipal waste produced in the municipality of Koszalin located in the northern part of Poland in the Pomerania region. The simulation was performed for mixed waste, biodegradable waste, waste from selective collection and mechanically dehydrated sewage sludge from the municipal wastewater treatment plant. Based on the structural research results, using the ERWP model assumptions, volumes of waste flowing between particular plants were determined; on these grounds, the volumes of waste for making energetic raw material were fixed. This model allows for comprehensive assessment of the waste economy system's efficiency, including definition of the waste volume being directed to raw materials recycling or materials recycling. The aspect associated only with the energetic potential of waste processed in the plants that use the combustion and methane fermentation techniques is presented herein.
