How can we calculate GTI from GHI or DHI using PVsyst

[BENTALEB]

I want to find GTI by using the GHI and DHI that I have. In fact, I want to know if it is possible to insert some data (GHI or DHI) in PVsyst and obtain the corresponding GTI.

[André Mermoud]

For importibng your meteo data you should use "Databases > Import ASCII Meteo files".

For the calculation of GTI (usually named POA, or GlobInc in PVsyst), you can use "Databases > Meteo Tables and Graphs". Here you can get tables in hourly, daily or monthly values, with the GlobInc values ("Global Tilted Plane").