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I live in northern MN. I would like to build a small solar system this fall so I can measure the amount of solar energy I can generate on my site. I want to do this before I build a large 10-15 KW off grid system so I can be sure it will be effective here and I can afford and place the panels...

Thanks for all the great input everyone. One of the things I want to study is how much the leafless(mostly) tree branches impact things. In the winter, my neighbors trees interfere with the sun somewhat in the one location I have to place the panels. It's something I can't change and before I...