photovoltaic system big as possible ?

"The bigger the better" is a statement that is often made, but when looked at more closely, it makes no sense. makes sense: Some existing plants have to run for more than 20 years until the energy needed for the production of the components has been generated again. This is not ecological and certainly not economical ! Well dimensioned, small plants, pay off in every respect, often after 5-8 years.