Do not install a solar system in your home without first doing an energy audit. An energy audit will assess your energy needs and will help you utilize savings before installing a solar system. The last thing you want to do is install a solar system to pay for energy you are wasting.
The amount of energy your solar panel will produce is rated by watts. For example, if your solar panel is rated 100 watts, then on a clear day, your solar panel will produce 100 watts per hour. To find out how much electricity you need to produce, look at your electric bill and divide the total by 30 days and then divide it by 3 as there is generally bright sunlight one third of the day.
Solar Photovoltaics: Fundamentals, Technologies and Applications Solar Photovoltaic (PV) as power source: Basic energy units eV, kWh and ToE, energy …
Don't waste your time lining the solar panels beneath an array of florescent lights--though it may sound tempting. Solar cells are not designed to generate a voltage from fluorescent light sources and this is a waste of energy of time. Any spot in the yard would be a better location for the panels.