tSpent coffee grounds are generated in a considerable amount as a processing waste during making thecoffee beverage. This waste is attractive for biofuel production due to the high organic content. The aimof this study was to investigate the bioenergy production potential of the spent coffee grounds duringpyrolysis at two different heating rates of 10 and 60◦C/min. During the process, three discrete stages ofpyrolysis representing the thermal behaviour of the sample were identified as the evaporation of absorbedwater, pyrolysis reactions and the decomposed residual solid. The gaseous volatile, CO2, CO and CH4wereshown to be the primary volatiles for the biogas. The heating rate of pyrolysis was found to have positiveeffects on the elemental composition in the bio-oil. The pyrolysis efficiency of spent coffee groundswas calculated accounting for the stoichiometric energy that can be produced from combustion of thepyrolysis products and the energy required to carry out the pyrolysis process. The pyrolysis efficiencywas estimated at 77–85%, depending on the moisture content of the feedstock