diff --git a/scripts/add_extra_components.py b/scripts/add_extra_components.py
index b957ca40..946c4433 100644
--- a/scripts/add_extra_components.py
+++ b/scripts/add_extra_components.py
@@ -152,7 +152,6 @@ def attach_stores(n, costs):
                bus1=buses_i,
                carrier='battery discharger',
                efficiency=costs.at['battery inverter','efficiency'],
-               capital_cost=costs.at['battery inverter', 'capital_cost'],
                p_nom_extendable=True,
                marginal_cost=costs.at["battery inverter", "marginal_cost"])