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Time for math. We're at about 6 degrees North Latitude. Add that to the 23 degree axial tilt of the Earth, and we have a worst-case shadow angle of 29 degrees in the winter. We have a 30 foot tower, so the noon/north shadow length is 30(tan(29))=16.1ft
Our solar panel will be 20 feet away, so the tower shadow won't be a problem. I still didn't like it, but the math says it's okay. Remember when you were a kid and you said "When am I ever going to need trig"?