The sites above all have south facing roofs, but are poor sites for solar because of the shading from
trees, power lines or dormers. The ideal location will have no shading anytime of the year from 9 am to 3 pm.
The roof slopes need to be greater than 20 degrees to qualify for the Minnesota State Rebate Program. The system must
also face within 45 degrees of south to qualify for the rebate.
Roof mounted systems are installed
slightly elevated above the roof surface to provide ventilation under the modules. As modulea heat up they are less
productive. In Minnesota we have to size systems allowing for the cold winter temperature. Cold weather will make
the modules produce more electricity. It is important to choose the proper inverter for the cold climate of Minnesota.