PR and meteo input

[JavierGV]

I found the next text on the help about the performance ratio:

"Unlike the "Specific energy production" indicator, expressed in [kWh/kWp/year], the PR is not directly dependent on the meteo input or plane orientation. It is related to the system quality, and allows the comparison between installations in different locations and orientations".

For a given system (array + place) PR varies with the meteo data used (irradiation + temperature).

The different values for the PR for each month of the year can be seen on the report and the difference between months is the meteo data (different irradiation and different temperature).

The same irradiation data with diferent temperature data will result in a different PR.

How could you compare between two installations in different locations and orientations with different meteo data?

[André Mermoud]

This sentence is meant for the irradiation, as the PR is referenced to GlobInc.

The PR is obviously related to the temperature. But this is a second-order variation when comparing systems in different locations (same region) or different orientations.