Last year, Oct. 25 - Dec. 24, my electric bill was just under $400 (3891 kW.h) using my pellet stove, burning 24/7 and barely keeping the house warm.
This year, Oct. 25 - Dec. 24, my electric bill was $153 (1700 kW.h).
The huge difference between this year and last, is that this year, we installed a wood stove, and only used the pellet stove a few days, on the coldest days.
So, I'd have to say that the pellet stove is a huge energy eater, in our home anyways.
Will be interesting to see what our bill is for the past two months (bill will be in within the next couple days). It is estimated at around $150, where last year it was $361.