In a cold climate like Norway, they are literally the cheapest source of heating full stop*, and it's not close. * Except if you own woodland, chop your own fi

In a cold climate like Norway, they are literally the cheapest source of heating full stop*, and it's not close. * Except if you own woodland, chop your own firewood, and burn that for heat in a central furnace, which is not actually that uncommon in the rural Nordics