Missing Met Data in PVsyst

[lucydeanna]

Hi all,

From my understanding, any missing data in a MET file should be replaced with -99 (or less), and the missing values will be replaced by an average of the corresponding hour of the previous and next day. Attached is an example of how I am doing this.

After importing the met data and running the simulation, looking at the E_Grid output, I can see this value is just being treated as nighttime instead of an average. 

Any help appreciated, thank you.

[Auriane Canesse]

Unfortunately, it is impossible to extrapolate irradiance, missing data or invalid data (-99) will be set to 0. This is due to the intrinsic variability of the irradiance.
I will clarify our help page on this point.