Solar in our experience is a headache. I was infested with birds who loves to stay, lay eggs, droppings, noise etc under the panel. But I fix this after I am so mad . I installed screen nettings.
One of the panel stop saving me money last Nov 2012 and it takes about 2 months for the company to fix it.
On June 24, 2013 another panel down and I been reporting this almost every 2 weeks. Today Aug 29, 2013 I check the system online and still not working. Warranty? Yes 25 years but the time to order parts and fixing it will take more than 2 months, Forget it.
If you want Home Solar make sure to find a good company. Don't just jump to the figures they will show you and the warranty they gonna tell you.