By using properly rated pellets (to EN plus standard), savings against fossil fuel costs  are approximately 30% against Oil/ Kerosene, 45% against LPG and 71% against Electricity.

See the chart below showing savings against pellets and logs

Fuel Comparison logs & pellets

 These percentages will increase if fuel prices continue to rise, as they have by an average of 10% over the last few years.  By contrast, pellet fuel prices have remained stable, rising by less than 2% a year over the last 5 years.