Determination of off-gassing and self-heating potential of wood pellets – Method comparison and correlation analysis

•Evaluation of eleven pellet batches by off-gassing and self-heating methods.•Correlation between off-gassing and self-heating identified.•Relation of released VOCs and fatty and resin acids in pellets confirmed.•Thermogravimetric analysis not sufficient for exclusive assessment of self-heating.•No relation between CO off-gassing or self-heating and fatty and resin acids amount.