A few simple guidelines will help you to identify your home solar viability:
1) South-facing orientation:
For solar installations in the northern hemisphere, the consistent rule-of-thumb is: The more south facing the surface, the more energy the system will produce. Ideally, one would want to install the solar system on a surface within 40 degrees of directly South (180 degrees) to ensure optimal production from the solar system. Systems on flat roofs or mounted on the ground will be tilted to provide a south-facing exposure.
2) Minimal Shading:
Consider the amount of shading from nearby obstructions which may impact your system. If you live in the suburbs, think shading from trees. If you live in the city, look for adjacent taller buildings that may shade the system. Think about anything that might impact the access of the sun on your roof. Would you consider removing an obstruction if it meant the difference between having solar or not?
3) Minimal Obstructions & Surface Area:
How much usable roof space do you have? Is your roof angular or does it have a lot of dormers? The more clear space the better, but we can work around your vent pipes, chimneys, and skylights.