Once your panels are in place, keep an eye on them and monitor them regularly. Get to know what you daily output of energy is, what everything looks like when operating optimally and even keep a record of such things. This can help you quickly notice when something isn't working correctly and help you ascertain where the problem is.
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.