The final disposal of urban solid waste, in landfills or dumps, is one of the problems that large Brazilian cities endure. The use of MSW in thermal treatment processes with energy recovery (waste-to-energy technologies) meets the search for alternative sources, preferably renewable, for energy generation. The objective of the present work is to quantitatively evaluate an electric energy generation system operating with synthesis gas from a solid urban waste (MSW) gasifier, with the possibility of gasification with sugar cane bagasse. A mixture of MSW with up to 40% by mass of sugarcane bagasse as feedstock for the gasification process in a fixed-bed co-concurrent gasifier is studied. The syngas produced powers an internal combustion engine that powers an electricity generator. The system studied is composed of a separation, treatment and drying island for the fraction that can be gasified from the waste, a gasifier, a purification system and an internal combustion engine coupled to a generator. By determining the mass flow rate and the net calorific value at each stage of the process, it is possible to determine the available power that the proposed system offers and to determine the efficiency. By analyzing the same system using the co-gasification of sugarcane bagasse with different percentages, it is possible to analyze the difference in quality of each fuel generated and its respective energy availability. It was concluded that a gasification system using proportions of urban solid waste and sugarcane bagasse as fuel is able to generate more electricity than the energy expended during the process.