I looked into backyard windpower possibilities a number of years ago. won't fly. I'm in a marginal zone, per wind energy potential, most likely due to intermittency on an annual basis. We get some awesome storms come through with sustained speeds 40-70mph, sometimes up to 3 days non-stop, but they are not the norm, and moderate breezes are not the average either. Like CH said, who could foresee even thinking about that?
I was more concerned about determining 100-yr floodplain in relation to property boundary, neighbors' zombie potential, neighborhood dog hazards, traffic patterns, visual elbow room in at least 1-2 directions, things like that, when I bought my current place. neighbor zombie potential is a mixed bag in my neighborhood, including right next door depending on which directions I'm looking, more potential than I realized at time of purchase.