Is there a way to give a surface different reflectance through a year?

Hi! I want to run an AnnualIrradiance simulation with a ground surface that changes reflectance through the year. What I do now is to run multiple simulations and then combining the results. This is very computational heavy, so I wondered if it would be possible to run the simulation with a variable reflective surface.

That’s the right way to do it.

Are you generating the wea/sky for only part of the year? If you break down the simulation into smaller chunks, the amount of information will be the same as running the full study with a single material.

Thank you! I was generating the full year for each, so I will change that now!