Considering solar?  Consumer Reports addresses critical questions.

Solar Panels

Does my house have to be situated in a very sunny spot?

About how much power can I expect to get?

Is it possible to save up power to use at night or on rainy, overcast, days—or during a power outage?

My area is prone to storms. Can hail and lightning damage solar panels?

Will solar panels damage my roof?

Are solar systems crazy expensive?

What about maintenance?  

What should I look for in a PV installer?

An article in the latest Consumer Reports October 2015 answers these questions and many others.