diff --git a/src/energyplus/ForwardTranslator/ForwardTranslateDesignDay.cpp b/src/energyplus/ForwardTranslator/ForwardTranslateDesignDay.cpp
index a1a2282f603..c122c16a046 100644
--- a/src/energyplus/ForwardTranslator/ForwardTranslateDesignDay.cpp
+++ b/src/energyplus/ForwardTranslator/ForwardTranslateDesignDay.cpp
@@ -173,7 +173,7 @@ namespace energyplus {
       }
     }
 
-    if (istringEqual(solarModelIndicator, "ASHRAETau")) {
+    if (istringEqual(solarModelIndicator, "ASHRAETau") || istringEqual(solarModelIndicator, "ASHRAETau2017")) {
       // ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
       idfObject.setDouble(SizingPeriod_DesignDayFields::ASHRAEClearSkyOpticalDepthforBeamIrradiance_taub_,
                           modelObject.ashraeClearSkyOpticalDepthForBeamIrradiance());
diff --git a/src/energyplus/ReverseTranslator/ReverseTranslateSizingPeriodDesignDay.cpp b/src/energyplus/ReverseTranslator/ReverseTranslateSizingPeriodDesignDay.cpp
index 95931a27865..fb01bc891fd 100644
--- a/src/energyplus/ReverseTranslator/ReverseTranslateSizingPeriodDesignDay.cpp
+++ b/src/energyplus/ReverseTranslator/ReverseTranslateSizingPeriodDesignDay.cpp
@@ -267,7 +267,7 @@ namespace energyplus {
       }
     }
 
-    if (istringEqual(solarModelIndicator, "ASHRAETau")) {
+    if (istringEqual(solarModelIndicator, "ASHRAETau") || istringEqual(solarModelIndicator, "ASHRAETau2017")) {
       //  ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub)
       value = workspaceObject.getDouble(SizingPeriod_DesignDayFields::ASHRAEClearSkyOpticalDepthforBeamIrradiance_taub_);
       if (value) {