Originally Posted by Oldtree
Willow and poplar have a high water content. while they grow quickly (depending on the site) it may be better to grow ash. The fuel return on an acre will be small over time. It may have more ecological value to plant a mixed woodland, (ash, hawthorn, sorbus, hazel, etc) and let it be. A windy path through this area will give you countless hours of enjoyment over the years, as well as providing a much needed habitat.
ash is a great wood for burning but wouldnt be a great option for planting unless you are ok with waiting 30 years for decent thickness.
go ahead with the willow, its quick growing and a relatively hard wood.
willow will grow anywhere at all, you could buy them in any garden home at up to 8 years old or just as seeds but if you go out into the contry and throw a stone it will likely hit a willow, if you know what they look like you could get find of plant sized ones to dig up.
could also try alder and birch trees.
idealy once cut should store logs in a shed for 2 years to dry, using a high effecency stove for burning.
cant beat the turf though, talk to luke ming