The cost of a PV system depends on the system's size, equipment options, and labor costs.>

Prices vary depending on other factors as well, such as the PV provider, whether or not your home is new, if the PV is integrated into the roofing materials or mounted on top of the existing roof, and the PV manufacturer.

Small systems funded through California's Energy Renewables Program, through the end of 2006, have been averaging $7.00 - $8.00 / watt, after rebates.

Are PV systems reliable?

PV systems have no moving parts. There is nothing that can wear out.

They are essentially silicon or glass panels, like a window.

They are made to withstand hot, direct sunlight and harsh weather conditions.

They will continue to work as long as sunlight falls on the surface.

It's estimated that PV panels should last 50 years or longer.