If you are buying a solar energy system, make sure your panels can be easily adjusted. As seasons change, so does the angle of the sun. Your panels will need to be adjusted every three months or so. Make sure that you know how to do this or talk to your contractor about seasonal maintenance.
Keep your solar panels clean. If your solar panels are dirty or obstructed in any way, they won't work as well. Keep an eye on your solar panels and clean them if they're not quite looking their best. Hosing them down occasionally will ensure that they are much more efficient.
Western Harmonics solar powered fan, kit #1505-HG, features a great fan running directly off a 10 Watt solar panel. Great for a variety of uses!
When you are figuring out the return on your solar power investment, do not forget that you can sell back energy to your utility company if you generate a surplus. This is usually in the form of a credit on your utility bills. Even though the initial investment may be hefty, the long-term financial benefits is there for the taking.