The use of waste for energy production through processes like pyrolysis, combustion and oil extraction is a sustainable solution to serious environmental problems like centralization of the energy matrix in nonrenewable materials and pollutants and the volume of urban solid waste. In this context, this work aimed to analyze the energy potential of two solid waste biomasses: municipal slaughter sludge and wood sawdust generated in the city of Gurupi –TO. Were evaluated the contents of humidity, volatile content, ash, fixed carbon through the immediate analysis and upper (PCS) and lower (PCI) calorific value were evaluated for all samples collected. In the immediate analysis it was found that the sludge sample had higher ash content than the sawdust and both had high volatile contents. The sawdust presented higher calorific power (4882 cal kg-1) than the sludge (3952.5 cal kg-1), but the process of obtaining energy from the sludge requires less heat. It can also be concluded that both materials present viable alternatives for obtaining energy.