Find out what kind of warranty comes with any system you are considering. A solar energy system should last you for at least twenty years, so be sure the company you are dealing with can support it. If there is no warranty, or an extremely limited one, it may be time to keep looking, no matter how great the savings are.
While it may seem that your solar panels are always affixed to your roof permanently, the best ones permit repositioning of the angles. Fixed angle panels are just not that efficient.
My documentary on solar energy for my science and technology class. Material use in the making of this video is for education purpose only.
When people talk about solar energy, they mainly think about the large panels installed on the roof of a home. These are popular, but they are not the only way to use the heat of the sun for power. Install attic fans in your roof. The heat from your attic causes the blades to spin and generate power.