This study shows the potential of biogas in urban solid waste landfills which, according to estimates and based on the international experience, did not show satisfactory results. The issue of solid waste in Brazil has been discussed by society over the years. Besides dealing with the issues of greenhouse gases emissions, it comprises the context of sustainability in the use of methane as a source of renewable energy. Waste landfills generate gas emissions that are harmful to people and to the environment. In Brazil, there are few projects on the use of methane energy. They are located in the south and southeast regions and some of them show technical difficulties due to failures in predicting the production of landfill gas. Specifically, the country has three projects for waste management for large-scale production of energy. Among them, there is the object of this case study, the Bandeirantes Biogas Plant in São Paulo, supported in mathematical modeling.