[shadowbot]

I have never built one from scratch however my parents are in the process this very moment of having one installed in their back yard. It is about 60 feet tall and has a small solar collector on it also. It cost them roughly $7000 US and they got a sizeable portion of grant money from the US government, If you would like more info on it I am sure they will pass on some more details to me if I ask them. Its estimated that at its current location it will provide at least 50% of the required electricity of the 5 person household on average over the course of the year.