non-uniform soiling over a module

[Mouaz Alhamwi]

Hello!

When defining soiling percentage then PVsyst calculate the drop in irradiation penetrated to the cells and the associated effects (such as the cells' temperature ...etc) and this soiling percentage is assumed to be constant over the whole module. however, in reality, the soiling is usually heterogeneous over the PV modules which cause partial cell's shading and hot spots.

Does this heterogeneous distribution taken into account in PVsyst, or is there a way to include it in the simulations?

Thx.

[André Mermoud]

No, you should evaluate this by yourself.

The soiling loss parameter is already extremely poorly defined (and not stable in time). Elaborating sophisticated corrections on such values doesn't make much sense.