diff --git a/hub/exports/building_energy/idf.py b/hub/exports/building_energy/idf.py
index 76e93c89..0270d866 100644
--- a/hub/exports/building_energy/idf.py
+++ b/hub/exports/building_energy/idf.py
@@ -12,6 +12,7 @@ from geomeppy import IDF
 import hub.helpers.constants as cte
 from hub.city_model_structure.attributes.schedule import Schedule
 from hub.city_model_structure.building_demand.thermal_zone import ThermalZone
+from hub.helpers.configuration_helper import ConfigurationHelper
 
 
 class Idf:
@@ -633,6 +634,8 @@ class Idf:
                                          self._city.lower_corner)
       shading.setcoords(coordinates)
       solar_reflectance = surface.short_wave_reflectance
+      if solar_reflectance is None:
+        solar_reflectance = ConfigurationHelper().short_wave_reflectance
       self._idf.newidfobject(self._SHADING_PROPERTY,
                              Shading_Surface_Name=f'{surface.name}',
                              Diffuse_Solar_Reflectance_of_Unglazed_Part_of_Shading_Surface=solar_reflectance,