Get online to find your local Internet solar panel community. You can find out good information about peaks and lows in solar energy use in your area. If you get particularly adept at getting on a roof to clean your solar panels, you might can even market yourself and make a few bucks off other solar panel owners afraid of heights.
You don't necessarily have to stick the solar panels in the typical locations you see in the brochures. There only needs to be a small gap of approximately 1" behind the panel for air circulation. You can find interesting positions anywhere on your property that work with the style and design of the surrounding area.