The solar_reflectance_back
is exposed on the SDK layer of honeybee_energy. You can see it under the EnergyWindowMaterialGlazing
class.
So you can set the back reflectance to be something different than the front using a line of Python inside a GHPython component like so:
mat.solar_reflectance_back = _ref_back
Here’s a sample:
custom_glass_material.gh (13.2 KB)