diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f5d9db10..6bc45a148 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,7 +27,7 @@ Classify the change according to the following categories:
     ### Patches
 
 ## gridRE
-### Minor Updates
+### Major Updates
 ### Added 
 - Added the following inputs to account for the clean or renewable energy fraction of grid-purchased electricity: 
   - ElectricUtility **cambium_cef_metric** to utilize clean energy data from NREL's Cambium database
diff --git a/reoptjl/models.py b/reoptjl/models.py
index 6f958d7ad..ae1eb94d9 100644
--- a/reoptjl/models.py
+++ b/reoptjl/models.py
@@ -69,10 +69,10 @@ class MACRS_YEARS_CHOICES(models.IntegerChoices):
 }
 
 EMISSIONS_DECREASE_DEFAULTS = { # year over year decrease in grid emissions rate
-    "CO2e" : 0.02163,
-    "NOx" : 0.02163,
-    "SO2" : 0.02163,
-    "PM25" : 0.02163
+    "CO2e" : 0.0459,
+    "NOx" : 0.0459,
+    "SO2" : 0.0459,
+    "PM25" : 0.0459
 }
 
 WIND_COST_DEFAULTS = { # size_class_to_installed_cost