Photovoltaic surface results don't match PVGIS

[etienneburdet]

Hello,
I found that the AC production of Photovoltaic Surface do not match the results of PVGIS. I digged a bit and realized that to have the same results you need to have DCtoAC=1, Pvsurfacepercent=100, moduleactiveareapercent = 100 and efficiency =18. The last one is OK, but for all the other it seems like there is a problem with applying losses somewhere.

Since PVGIS does account for everything, including a 14% DC to AC loss, could it be that the module apply losses twices?

I always found the results were pretty low, but until now I didn't pay attention and I was just multiplying everything to match my desired kWh/kWp.