Define Tree Opacity

[dtarin]

Hello,

It would be help if trees or other solid objects had a parameter which defined their opacity. Often we have trees which are not very dense but whose branches span a wide area in a complex way. Defining a tree object which covers the area, but has <100% opacity could help capture the fact that some light passes through the branches. If this were implemented, you could also feature seasonal opacity factors, where in winter time the opacity is lower, and in summer it is higher.

[André Mermoud]

This becomes very complex indeed. And the "recovery" through the transparency would be very limited due to electrical mismatch losses.

Moreover the "recovery" would arise in winter, when the irradiance contribution is not very important at medium latitudes.

We don't envisage to implement this in PVsyst in a previsible future.