It depends upon your system size and local geographic and environmental conditions.  CertainTeed offers a wide range of system sizes that can be customized to fit your needs.  Your trained contractor can help design a system optimizing output.

Apollo Tile is available in a wide variety of system sizes in order to meet the needs of most homeowners. A good rule of thumb is approximately 12 watts per square foot or 1kW per 83 square feet. A 3kW household system requires only 250 square feet of roof space.

This will depend primarily on the size of your solar system, your usage, and the cost of electricity per kWh. (For reference, 1kWh runs a 100 watt light bulb continuously for 10 hours.) As electricity rates increase, your savings should increase.

Yes, in most cases, however Apollo Tile is considered more of a supplement.  A meter will measure the amount of electricity put back into the utility company's grid. In some cases, the utility company will pay a set rate payment to the homeowner (typically annually) or issue a credit for future use. Net metering laws vary from state to state; therefore consumers should verify their local utility's policies.

The Apollo Tile system is designed to be incorporated into flat-tile roofs.