That 10 Gigawatt number is the 'nameplate' number, not it's actual production capacity. The nameplate number assumes the panels are in 100% perfect sunlight 24

That 10 Gigawatt number is the 'nameplate' number, not it's actual production capacity. The nameplate number assumes the panels are in 100% perfect sunlight 24/7 - typical production numbrees range from 10-20% depending on location, weather, air pollution, and time of year.