The present invention is directed to a photovoltaic installation process. A process may include determining a method of interconnection to couple a photovoltaic system to an electrical system of a structure. The process may further include determining, via an electronic device, an ideal usage offset ratio for the photovoltaic system based on a known utility rate associated with the structure. Moreover, the process may include estimating a number of modules required to meet the determined ideal usage offset ratio. In addition, the process may include generating, via the electronic device, installation information including required installation materials, estimated costs, point-load, and electrical information for the photovoltaic system.