diff --git a/scripts/add_existing_baseyear.py b/scripts/add_existing_baseyear.py
index 750ab22f..44c9b20e 100644
--- a/scripts/add_existing_baseyear.py
+++ b/scripts/add_existing_baseyear.py
@@ -417,6 +417,11 @@ def add_heating_capacities_installed_before_baseyear(
 
         nodes = pd.Index(n.buses.location[n.buses.index.str.contains(f"{name} heat")])
 
+        if (name_type != "central") and options["electricity_distribution_grid"]:
+            nodes_elec = nodes + " low voltage"
+        else:
+            nodes_elec = nodes
+
         heat_pump_type = "air" if "urban" in name else "ground"
 
         # Add heat pumps
@@ -440,7 +445,7 @@ def add_heating_capacities_installed_before_baseyear(
                 "Link",
                 nodes,
                 suffix=f" {name} {heat_pump_type} heat pump-{grouping_year}",
-                bus0=nodes,
+                bus0=nodes_elec,
                 bus1=nodes + " " + name + " heat",
                 carrier=f"{name} {heat_pump_type} heat pump",
                 efficiency=efficiency,
@@ -458,7 +463,7 @@ def add_heating_capacities_installed_before_baseyear(
                 "Link",
                 nodes,
                 suffix=f" {name} resistive heater-{grouping_year}",
-                bus0=nodes,
+                bus0=nodes_elec,
                 bus1=nodes + " " + name + " heat",
                 carrier=name + " resistive heater",
                 efficiency=costs.at[f"{name_type} resistive heater", "efficiency"],
@@ -541,6 +546,7 @@ def add_heating_capacities_installed_before_baseyear(
             )
 
 
+# %%
 if __name__ == "__main__":
     if "snakemake" not in globals():
         from _helpers import mock_snakemake
@@ -552,7 +558,7 @@ if __name__ == "__main__":
             clusters="37",
             ll="v1.0",
             opts="",
-            sector_opts="1p7-4380H-T-H-B-I-A-dist1",
+            sector_opts="8760-T-H-B-I-A-dist1",
             planning_horizons=2020,
         )