Back up 10+ years. I have a oil fired central heating system in the house.
In that day and time, I made an educated guess that oil prices would continue to rise.
They did. Plus, we will never ever have natural gas.
So, I decided to install a Harman PP38+ wood pellet stove.
If gas would have cost X to heat the house, wood pellets cost about 2X.
The oil-fired furnace cost was about 3.5X. propane maybe 4.5X and electricity, 5X.
Consequently, the wood stove recovered the capital cost over the first 3 winters.
The pleasant surprise has been my fixed price of $215/ton for the past 7 years.
This year, that's gone up to $230/ton.
The balanace sheet has got to change with oil less than 50% of a year ago.
How that translates into furnace oil, I don't know as have not bought
any for backup this winter (when I go into the city for a week or two.)