@djordje thank you for your patience !
If I well understood what you explained, the context is “seen” as an opaque surface isn’t it ? And the Albedo in cities which considers only the ground, does not impact very much the energy provided by PV Installation.
In the next link, I read that it’s possible to modify the reflectance of the context for EnergyPlus Simulation. Do you think by changing this and runing the simulation,we can take the total energy to input it on the “photovoltaics Performance Metrics” ? Perhaps in this way we can obtain the optimal System Size taking considering the urban context not as opaque surface …
[Reflectance of Shading Surfaces in EnergyPlus]
I just started working on Grasshopper, Ladybug and Honeybee only for two months, I try to understand everything ^^
Thank you