There is really no reason to even consider getting a solar energy system if you live in an area that rarely sees the sun. This does not mean that a less than reputable company will not try to sell you a solar system though. If your roof does not receive at least 6 hours of full sunlight per day, you should not consider solar power.
Solar Water Heater, Solar Photo Voultaic Module, Solar Pump, Solar Light.
Decide whether you want to be on or off the power grid. Many people look forward to getting "off the grid" when they switch to solar power, however this may not be the best choice. Staying on your power grid means that when you have poor sunlight conditions you have the ability to purchase additional power when you need it. As a bonus, when you produce more power than you use, you can sell the excess back to the utilities.
One of the easiest things at your home to convert to solar power is your outdoor lighting. There are many attractive solar lighting options available at your local home center. These fixtures are easy to install and are relatively inexpensive. Spend some time browsing the selections and see which options will be suitable for your outdoor needs.