Regarding the calorific value of the char, temperature increases the value of the initial biomass from 1.7 to 1.9 times in the temperature range studied, leading to heating values higher than those of other solid fuels, such as soft coal (29 MJ kg− 1). The high carbon content leads to high caloric values, which make this char suitable for energy valorization once it has been briquetted, therefore providing energy to the pyrolysis process itself or for external applications.