How much energy does a PV system produce?

 

The average output of a PV system is always much less than its peak power. In sunny desert regions, this ratio is around 23%. For the Netherlands it is 10%. In other words: a 3000Wp system in the Netherlands has an average power output of 300 W. That translates into an annual output of 2628 kWh (300 W x 8760 hours x 0.001)?
Rule of thumb: 1 Wp translates into between 0.75 and 0.85 kWh of electricity a year.