Photovoltaic system installation

A method, comprising:

• determining a method of interconnection to couple a photovoltaic system to an electrical system of a structure based on site information associated with a power meter and one or more breaker ratings associated with the structure;
• determining, via an electronic device, an ideal usage offset ratio for the photovoltaic system based on at least some of the site information;
• estimating, via the electronic device, a number of modules required to meet the determined ideal usage offset ratio;
• and
• approving or rejecting the photovoltaic system based on a comparison of estimated production levels for the photovoltaic system and required production levels.

A system, comprising:

• an application program stored in a computer-readable medium, wherein the application program, when executed by a processor, is configured to:
• determine a method of interconnection to couple a photovoltaic system to an electrical system of a structure based on site survey information including electrical information for the structure, measurements of a roof of the structure, roof obstruction information, tilt information for the roof, and structure utility usage information;
• determine, via an electronic device, an ideal usage offset ratio for the photovoltaic system based on at least some of the site survey information;
• estimate a number of modules required to meet the determined ideal usage offset ratio;
• and
• approve or reject the photovoltaic system based on a comparison of estimated production levels for the photovoltaic system and required production levels.