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.
Find out what angle to set your solar collectors at.
To help keep your solar energy panels running efficiently, keep a record of your solar panels performance. On this record, note when the days are overcast and how much energy your panels produced. This will help you plan your energy consumption better. For example, if the forecast is cloudy, then you should wait to do household chores that use a lot of energy.
Be realistic about the costs of having a solar energy system. If you're paying much less than other systems that are around the same size as yours, you may have poor equipment or installation work. Like with many things in life you get what you pay for. Quality installation work and equipment isn't going to be cheap. You may have substantial savings by going with a large company, but other companies may be cutting corners to keep costs down.