diff --git a/packages/control/bat_all.py b/packages/control/bat_all.py
index 8b327d60c1..b3ad5851d2 100644
--- a/packages/control/bat_all.py
+++ b/packages/control/bat_all.py
@@ -217,6 +217,8 @@ def _limit_bat_power_discharge(self, required_power: float) -> float:
             remaining_inverter_ac_out_power = 0
             for inverter in data.data.pv_data.values():
                 try:
+                    if len(data.data.counter_all_data.get_entry_of_element(inverter.num)["children"]) == 0:
+                        continue
                     bat_power = self.get_bat_power_of_hybrid_system(inverter)
                     inverter_power = max((inverter.data.get.power + bat_power) * -1, 0)
                     remaining_inverter_ac_out_power += inverter.data.config.max_ac_out - inverter_power + bat_power * -1
diff --git a/packages/control/bat_all_test.py b/packages/control/bat_all_test.py
index c9787d71d8..245a1f9917 100644
--- a/packages/control/bat_all_test.py
+++ b/packages/control/bat_all_test.py
@@ -44,7 +44,8 @@ def test_limit_bat_power_discharge(bat_power: int,
     data.data.pv_data["pv2"].data.config.max_ac_out = 5000
     data.data.bat_data["bat1"] = Bat(1)
     data.data.bat_data["bat1"].data.get.power = bat_power
-    mock_entry_children = Mock(return_value={"children": [{"id": 1, "type": "bat"}]})
+    mock_entry_children = Mock(return_value={"id": 5, "type": "pv", "children": [
+                               {"id": 1, "type": "bat", "children": []}]})
     monkeypatch.setattr(data.data.counter_all_data, "get_entry_of_element", mock_entry_children)
 
     b = BatAll()
@@ -57,6 +58,26 @@ def test_limit_bat_power_discharge(bat_power: int,
     assert power == expected_power
 
 
+def test_limit_bat_power_discharge_no_hybrid_system(monkeypatch: pytest.MonkeyPatch):
+    # setup
+    data.data.pv_data = {"pv2": Pv(2)}
+    data.data.pv_data["pv2"].data.get.power = -100
+    data.data.pv_data["pv2"].data.config.max_ac_out = 5000
+    data.data.bat_data["bat1"] = Bat(1)
+    data.data.bat_data["bat1"].data.get.power = -4900
+    mock_entry_children = Mock(return_value={"id": 5, "type": "pv", "children": []})
+    monkeypatch.setattr(data.data.counter_all_data, "get_entry_of_element", mock_entry_children)
+
+    b = BatAll()
+    b.data.get.power = -4900
+
+    # execution
+    power = b._limit_bat_power_discharge(5100)  # pyright: ignore[reportPrivateUsage]
+
+    # evaluation
+    assert power == 5100
+
+
 @dataclass
 class Params:
     name: str