09/14/2006
John Fournelle
My only issue is that the `payback` estimated period (~17 years) before installation now seems significantly different than that I now estimate using one year`s actual production figures (25-30 years). However, this was not what I was most concerned about, but leaves me a little at a loss why the big difference. The contractor had an explanation`(shading of some trees was more than he estimated), but I still wonder about that.<br />