diff --git a/config/default.yaml b/config/default.yaml
index 56d09b07..1dc50ca3 100644
--- a/config/default.yaml
+++ b/config/default.yaml
@@ -162,6 +162,7 @@ parameters:
             coaches-and-buses: Motor coaches, buses and trolley buses
             passenger-cars: Passenger cars
             motorcycles: Powered 2-wheelers
+        uncontrolled-ev-charging-share: 0.5
     entsoe-tyndp:
         scenario: National Trends
         grid: Reference