Attached is a article I wrote concerning the fuel we use for heating the cabin at the redoubt. I have not formatted it to fit here so please just click on the PDF provided.
I want to add, that last year we added a very efficient propane furnace to augment the wood stove. I set the temp on the thermostat for 66 degrees F for most of the day. At 0600 hrs I set the temp to 68 degrees in case I didn't get up at O' Dark Thirty to throw 2-3 logs on the coals.
If MrsMac and i are not here for a couple of days, I set the temp on the furnace to 58 degrees F. If she is here and I am on the road for a few days, she uses the furnace and not the wood stove.
I hope the article clears up any questions you might have for heating in a SHRF scenario.
Peace....