Look into solar powered appliances. There are a number of products that are available that are powered by solar energy. One of the most popular is the solar powered water heaters. Just having one appliance run by solar energy can save you hundreds of dollars each year in energy costs.
Position solar panels on the east or west side of your home or business. Since the sun travels from east to west throughout the day, placing solar panels on areas of your roof that face north or south is a waste. You'll get much better energy returns by following the same path as the sun.