Pvlib-python: Shadow effect modeling in PV systems.

[dberrian]

I couldn't find in PVlib-Python any thread about shadow effect modeling in PV systems which is very important for energy yield prediction. Do you have any idea about this topic?

[cwhanse]

Currently pvlib-python doesn't include code for near or far-field shading. There are models in literature and some modeling package (e.g., FirstSolar's PlantPredict) are using some of them. pvlib-python is open source, we'd welcome a pull request if you've got a well-documented shading model that could be included.

[cwhanse]

1017 partially meets this request. I would like to see #758 completed and merged before we close this issue.

[kanderso-nrel]

Diffuse and horizon shading are good steps forward but I think adding a model for row-to-row direct shading as well would make it easier to say "yes, pvlib-python models shading". Doesn't necessarily have to be at the level of detail of PVMismatch; there are some pretty straightforward models out there like Thakkar et al. "A simple non-linear model for the effect of partial shade on PV systems" https://ieeexplore.ieee.org/document/5614450, and I used a similar model in a PVSC paper this year (preprint).

[mikofski]

the infinite sheds pr #717 provides row-to-row shading