The project concerns the creation of a waste treatment plant in the area of Thebes, which is required for the provision of the General Economic Interest Service for the treatment of 32,000 t/y mixed municipal waste, 1,850 t/y pre-selected organic, 1.300 t/y green and 7.000 t/y sludge from biological cleansing plants of Theban, Tanagra and Aliartos Thespian Voti. The applied processing technology includes mechanical sorting, anaerobic digestion and aerobic composting, with simultaneous energy utilisation of the biogas produced.