RAOUANE LAILA

Hello, I am running simulations in PVsyst for both monofacial and bifacial modules using the unlimited sheds configuration to avoid performing a shading scene simulation. I noticed that even when I keep the same spacing between sheds and only change the number of sheds in the layout, the simulation results (energy production and PR) still vary. I had assumed that in unlimited sheds mode, with shading simulation disabled, the number of sheds would not affect the results since the geometry is considered infinite in the transverse direction. I would like to better understand the logic and assumptions PVsyst uses regarding the number of sheds parameter, and why it impacts the results for both monofacial and bifacial modules. Thank you in advance for your help and clarifications. Best regards, Raouane Laila

Thank you Sir. Now it's clear. I’ll apply this logic to my system.

I am currently working with PVsyst version 7.4. Thank you for your response. In my case, I only have the total number of strings and the number of modules in series per string. Could you please guide me on how to calculate or estimate the appropriate number of sheds from this information? Is there a rule of thumb or a formula to follow based on the electrical layout (e.g. 24 modules per string, 3058 strings in total)? I would like to make sure that the "Number of sheds" I enter corresponds realistically to the physical arrangement of the system in the field. Best regards, Laila Raouane

Dear PVsyst team, In the Orientation → Unlimited sheds section, it's mentioned that the "Number of sheds" is only for visualization and does not affect simulation results. However, I noticed that changing this number (e.g. from 5 to 12) slightly alters the energy yield and PR, even when mutual shading is disabled and all other parameters (pitch, tilt, GCR, etc.) stay the same. Could you please clarify: How should we choose or calculate the number of sheds? Why does it impact the results if it's only for display? Could internal parameters (like edge effects or area estimation) be influenced? Thanks in advance for your help. Best regards, Raouane Laila