diff --git a/config/config.default.yaml b/config/config.default.yaml
index 81dda14a..5a588650 100644
--- a/config/config.default.yaml
+++ b/config/config.default.yaml
@@ -451,6 +451,7 @@ sector:
   coal_cc: false
   dac: true
   co2_vent: false
+  central_heat_vent: false
   allam_cycle: false
   hydrogen_fuel_cell: true
   hydrogen_turbine: false
@@ -878,6 +879,7 @@ plotting:
     services rural heat: '#ff9c9c'
     central heat: '#cc1f1f'
     urban central heat: '#d15959'
+    urban central heat vent: '#a74747'
     decentral heat: '#750606'
     residential urban decentral heat: '#a33c3c'
     services urban decentral heat: '#cc1f1f'
diff --git a/config/test/config.myopic.yaml b/config/test/config.myopic.yaml
index 0bb85ec6..d566c6cb 100644
--- a/config/test/config.myopic.yaml
+++ b/config/test/config.myopic.yaml
@@ -30,6 +30,9 @@ snapshots:
   start: "2013-03-01"
   end: "2013-03-08"
 
+sector:
+  central_heat_vent: true
+
 electricity:
   co2limit: 100.e+6
 
diff --git a/config/test/config.perfect.yaml b/config/test/config.perfect.yaml
index c99f4122..49886b26 100644
--- a/config/test/config.perfect.yaml
+++ b/config/test/config.perfect.yaml
@@ -44,6 +44,7 @@ electricity:
 sector:
   min_part_load_fischer_tropsch: 0
   min_part_load_methanolisation: 0
+
 atlite:
   default_cutout: be-03-2013-era5
   cutouts:
diff --git a/scripts/make_summary_perfect.py b/scripts/make_summary_perfect.py
index 7ca4055d..c387c6cf 100644
--- a/scripts/make_summary_perfect.py
+++ b/scripts/make_summary_perfect.py
@@ -28,6 +28,16 @@ idx = pd.IndexSlice
 opt_name = {"Store": "e", "Line": "s", "Transformer": "s"}
 
 
+def reindex_columns(df, cols):
+    investments = cols.levels[3]
+    if len(cols.names) != len(df.columns.levels):
+        df = pd.concat([df] * len(investments), axis=1)
+        df.columns = cols
+    df = df.reindex(cols, axis=1)
+
+    return df
+
+
 def calculate_costs(n, label, costs):
     investments = n.investment_periods
     cols = pd.MultiIndex.from_product(
@@ -39,7 +49,8 @@ def calculate_costs(n, label, costs):
         ],
         names=costs.columns.names[:3] + ["year"],
     )
-    costs = costs.reindex(cols, axis=1)
+
+    costs = reindex_columns(costs, cols)
 
     for c in n.iterate_components(
         n.branch_components | n.controllable_one_port_components ^ {"Load"}
@@ -176,7 +187,7 @@ def calculate_capacities(n, label, capacities):
         ],
         names=capacities.columns.names[:3] + ["year"],
     )
-    capacities = capacities.reindex(cols, axis=1)
+    capacities = reindex_columns(capacities, cols)
 
     for c in n.iterate_components(
         n.branch_components | n.controllable_one_port_components ^ {"Load"}
@@ -229,7 +240,7 @@ def calculate_energy(n, label, energy):
         ],
         names=energy.columns.names[:3] + ["year"],
     )
-    energy = energy.reindex(cols, axis=1)
+    energy = reindex_columns(energy, cols)
 
     for c in n.iterate_components(n.one_port_components | n.branch_components):
         if c.name in n.one_port_components:
@@ -336,7 +347,7 @@ def calculate_supply_energy(n, label, supply_energy):
         ],
         names=supply_energy.columns.names[:3] + ["year"],
     )
-    supply_energy = supply_energy.reindex(cols, axis=1)
+    supply_energy = reindex_columns(supply_energy, cols)
 
     bus_carriers = n.buses.carrier.unique()
 
@@ -604,7 +615,7 @@ def calculate_price_statistics(n, label, price_statistics):
     price_statistics.at["mean", label] = n.buses_t.marginal_price[buses].mean().mean()
 
     price_statistics.at["standard_deviation", label] = (
-        n.buses_t.marginal_price[buses].droplevel(0).unstack().std()
+        n.buses_t.marginal_price[buses].std().std()
     )
 
     return price_statistics
diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index ee72042f..f585ad04 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -1693,6 +1693,18 @@ def add_heat(n, costs):
             unit="MWh_th",
         )
 
+        if name == "urban central" and options.get("central_heat_vent"):
+            n.madd(
+                "Generator",
+                nodes[name] + f" {name} heat vent",
+                location=nodes[name],
+                carrier=name + " heat vent",
+                p_nom_extendable=True,
+                p_max_pu=0,
+                p_min_pu=-1,
+                unit="MWh_th",
+            )
+
         ## Add heat load
 
         for sector in sectors: