pv loss due to irradian level at positive

[PAVAN91ROC]

I have run PVsyst for one project in Maharashtra with north south tilt shed and found that pv loss due to irradiance level at positive what would be the reason

[André Mermoud]

A gain due to the low-light efficiency is possible, especially in very sunny places.

However this usually indicates that the PAN file has been specified with a very high series resistance, resulting in high low-light performance.

See the FAQ How are specified the PAN files in the PVsyst database ?