Debarking is an essential part in the technology of round timber processing. The volume of bark going to waste annually is millions of cubic metres, therefore the use of bark as an underexploited renewable source is of increasing importance. Pelletization is one of the recognized methods for increasing the bulk and energy densities of plant biomass, and respectively improving its value as a fuel. Plant biomass pellets are the only solid fuel that have a global constantly growing market. In this work the bark obtained after softwood trees debarking for the pulp manufacture was studied in terms of fuel pellets production feasibility. The fuel characteristics, including elemental composition, ash content, calorific values and other parameters required for fuel pellets standards were determined. The laboratory flat die pellet mill KAHL 14-175 was applied for pelletizing study. The study showed that using floatation process for purification / fractionation of bark batch under study, 86% of bark residue become suitable for obtaining of fuel granules quality of which meet the demand of EN 14961-2B European standard for non-industrial and industrial fuel pellets.