Building a solar plant

How is a photovoltaic system installed?
Is my roof suitable for a solar electric system?
Which size should a photovoltaic system have?
How much energy can a photovoltaic system produce?
What happens when a lightning strike hits the solar electric system?
Do I have to report my PV system to my insurance company?
How long can a photovoltaic system be used?
How long does it take to set up a PV system?
Does the solar power have to be fed into the grid?