Efficiency of module in loss diagram is not matching with the manufacturer specs

[hritik]

According to the manufacturer the module efficiency cames out to be 21.50%. but it is showing 21.53% in loss diagram. Does this efficiency PVSYST chooses from their own calculations using Internal model result tool.

[André Mermoud]

The value shown on the loss diagram is the Pmpp as calculated from the one-diode model.

It may be slightly different than the efficiency calculated from the Nameplate value  8PNom / module area).

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