I have just begun with alders and willows. I was going to put something about it in the aging homesteader section. 70 years old and worried about our energy resource future. Felling and working with larger trees becomes difficult at this age. We have been letting both the alders and willows grow for the last 5 years and they are getting to the point where some are large enough to use for firewood. There is a story in the town where I live (Washington county, Maine) of a family that harvested these two types of wood as their only source of firewood. They had a little over 5 acres. We currently burn around 2-3 full cords of hardwood, and around 1/2 cord of soft slab wood. We have 3 gas stihl chainsaws of different sizes, but we are going to switch over to a battery operated chainsaw and a Bahco bow saw.