1Standard installation includes installation of a pitched roof, without the replacement of structural and / or construction components as long as the installation itself does not require setting up scaffolding, using baskets elevators, cranes or other special lifting equipment.
It does not include civil works in general and the verification of structural stability of buildings where photovoltaic systems are installed and with site-specific accidental loads (snow, wind, etc..).
The average life cycle of a power plant is 25 years.