diff --git a/scripts/build_energy_totals.py b/scripts/build_energy_totals.py
index ce5bf7b0..b09ba080 100644
--- a/scripts/build_energy_totals.py
+++ b/scripts/build_energy_totals.py
@@ -1572,7 +1572,6 @@ def build_heating_efficiencies(
         ^ idees.columns.str.contains("water efficiency")
     ]
 
-
     heating_efficiencies = pd.DataFrame(idees[cols])
 
     new_index = pd.MultiIndex.from_product(