Talk to the company that you plan on having install your solar system and see if a sun tracker is a good fit for your system. Sun trackers use very little energy and will maximize the amount of power your system can produce. If you have the space and resources, a sun tracking system can help you maximize your energy production.
Do not fret if you live in an area where it is frequently overcast. Solar power does not necessarily require full sun all the time. The sun's radiation penetrates through the clouds and can energize the solar panels effectively. Before you give the idea, do your research and discuss your options with reputable solar energy companies.
Before installing any form of solar panels, be familiar with local rules and regulations. There are lots of places where some permits are required. The last thing you want is to have the system put it and then you are forced to remove it later.