diff --git a/app/models/cost.rb b/app/models/cost.rb
index 79ef5ee..ed460a2 100644
--- a/app/models/cost.rb
+++ b/app/models/cost.rb
@@ -175,10 +175,15 @@ class Cost
         # normaal_kwh * (0.23665 + 0.04452 + 0.03691) + dal_kwh * (0.19408 + 0.04452 + 0.03691) 
         normaal_kwh_cost = 0.23665
         dal_kwh_cost = 0.19408
-      # From 8 Sept 2022 until 7 Dec 2022
-      when 1662595200..1670457599
+      # From 8 Sept 2022 until 31 December 2025 (may need to extend this)
+      when 1662595200..1767139200
         normaal_kwh_cost = 0.60824
         dal_kwh_cost = 0.43701
+      else
+        # catch-all, incase 'formated_hour' is outside any of the cases
+        normaal_kwh_cost = 0.0
+        dal_kwh_cost = 0.0
+      end    
     end
     normaal_cost = add_tax(formatted_hour, normaal_kwh,normaal_kwh_cost,0,0) # return_kwh already accounted for
     dal_cost = add_tax(formatted_hour, dal_kwh, dal_kwh_cost,0,0)