The results of experimental investigation of pyrolysis, ignition, and combustion of biofuels (wood chips, date stones) and their processing products (charcoal, pellets) at temperatures of 250-1200A degrees C are presented. The influence of the yield of volatiles on the ignition and the mode of combustion of a particle has been considered. The results are compared with published data on the combustion of pellets and brown coals and with the data calculated according to the classical diffusion-kinetic model.