diff --git a/scripts/add_electricity.py b/scripts/add_electricity.py
index 9031c44d..b4d31481 100755
--- a/scripts/add_electricity.py
+++ b/scripts/add_electricity.py
@@ -358,7 +358,6 @@ def update_transmission_costs(n, costs, length_factor=1.0):
 def attach_wind_and_solar(
     n, costs, input_profiles, carriers, extendable_carriers, line_length_factor=1
 ):
-
     for car in carriers:
         if car == "hydro":
             continue