Kudos to you if you have considered adding solar panels to your house. However, thinking about it and doing it are quite different things. Consider the following article from The Good Human which outlines many ideas to consider before outfitting your house with solar panels.
For example, do you rent or own your home?
How long do you plan on living in your home?
What kind of exposure to sunlight does your roof get?
Check out the answers and more here: http://thegoodhuman.com/2012/10/31/is-my-house-a-good-candidate-for-solar/