The economic case for installing solar electric panels on your house or place of business is a heavily discussed topic these days. With the green building movement in full force, photovoltaic (PV) systems are becoming more and more popular. In many cases, though, homeowners and small business owners lack the necessary information to make an educated decision on whether to go ahead with a photovoltaic (PV) system installation. In order to make an educated decision on a PV system, the owner must approach the purchase with the return on investment (ROI) in mind.