Charge SCVMM's vm only until it is retired.

app/models/chargeback/consumption.rb

@@ -8,10 +8,12 @@ def consumed_hours_in_interval
       # Why we need this?
       #   1) We cannot charge for hours until the resources existed (vm provisioned in the middle of month)
       #   2) We cannot charge for future hours (i.e. weekly report on Monday, should charge just monday)
+      #   3) We cannot charge for hours after the resource has been retired.
       @consumed_hours_in_interval ||= begin
                                         consuption_start = [@start_time, resource.try(:created_on)].compact.max
-                                        consumption_end = [Time.current, @end_time].min
-                                        (consumption_end - consuption_start).round / 1.hour
+                                        consumption_end = [Time.current, @end_time, resource.try(:retires_on)].compact.min
+                                        consumed = (consumption_end - consuption_start).round / 1.hour
+                                        consumed > 0 ? consumed : 0
                                       end
     end