If you are thinking about using solar power in your home, you must consider how much direct sunlight your home is actually exposed to. In order for solar energy to be worth it, your roof should have full sun exposure a minimum of 6 hours every day. You should also be wary of any areas of your roof covered by shade.
I have been thinking about getting solar panels for a little while now, my uncle has has a small install for about 10 years, and my mate Ed recently had an install.
Maximize the output of your solar panels by adjusting them seasonally. Adjusting your panels twice a year, once in the summer and once in the winter, will ensure that your panels are producing the maximum amount of energy by taking into account the earth's changing position relative to the sun.