The energy consumption values were assessed in relation to the renewable energy produced, taking as a basis the lower heating value (LHV) of ethanol, 21.1 GU/m3. The global produced net energy. expressed as the useful energy generated in the process (lower heating value of ethanol and electric energy surplus) minus the energy consumed in the industrial process, were positive values (13.77 and 11.22 GJ/ms ethanol for media with 14% and 25% sugar content in the syrup respectively). However, the ethanol produced net energy, without considering the electric surplus of energy generated from the exceeding bagasse burned together with biogas and sludge, was negative for the more concentrated medium (4.47 and -1.26 GU/m3 ethanol for 14% and 25% sugar content in the syrup respectively).