diff --git a/homeassistant/components/kostal_plenticore/number.py b/homeassistant/components/kostal_plenticore/number.py
index d53982535da..2e544a16fec 100644
--- a/homeassistant/components/kostal_plenticore/number.py
+++ b/homeassistant/components/kostal_plenticore/number.py
@@ -27,9 +27,9 @@ from .helper import PlenticoreDataFormatter, SettingDataUpdateCoordinator
 _LOGGER = logging.getLogger(__name__)
 
 
-@dataclass(frozen=True)
-class PlenticoreNumberEntityDescriptionMixin:
-    """Define an entity description mixin for number entities."""
+@dataclass(frozen=True, kw_only=True)
+class PlenticoreNumberEntityDescription(NumberEntityDescription):
+    """Describes a Plenticore number entity."""
 
     module_id: str
     data_id: str
@@ -37,13 +37,6 @@ class PlenticoreNumberEntityDescriptionMixin:
     fmt_to: str
 
 
-@dataclass(frozen=True)
-class PlenticoreNumberEntityDescription(
-    NumberEntityDescription, PlenticoreNumberEntityDescriptionMixin
-):
-    """Describes a Plenticore number entity."""
-
-
 NUMBER_SETTINGS_DATA = [
     PlenticoreNumberEntityDescription(
         key="battery_min_soc",
diff --git a/homeassistant/components/kostal_plenticore/select.py b/homeassistant/components/kostal_plenticore/select.py
index 2f6d9334071..555bb89641b 100644
--- a/homeassistant/components/kostal_plenticore/select.py
+++ b/homeassistant/components/kostal_plenticore/select.py
@@ -20,20 +20,13 @@ from .helper import Plenticore, SelectDataUpdateCoordinator
 _LOGGER = logging.getLogger(__name__)
 
 
-@dataclass(frozen=True)
-class PlenticoreRequiredKeysMixin:
-    """A class that describes required properties for plenticore select entities."""
+@dataclass(frozen=True, kw_only=True)
+class PlenticoreSelectEntityDescription(SelectEntityDescription):
+    """A class that describes plenticore select entities."""
 
     module_id: str
 
 
-@dataclass(frozen=True)
-class PlenticoreSelectEntityDescription(
-    SelectEntityDescription, PlenticoreRequiredKeysMixin
-):
-    """A class that describes plenticore select entities."""
-
-
 SELECT_SETTINGS_DATA = [
     PlenticoreSelectEntityDescription(
         module_id="devices:local",
diff --git a/homeassistant/components/kostal_plenticore/sensor.py b/homeassistant/components/kostal_plenticore/sensor.py
index 88714620a46..d6e13ecb5b7 100644
--- a/homeassistant/components/kostal_plenticore/sensor.py
+++ b/homeassistant/components/kostal_plenticore/sensor.py
@@ -34,21 +34,14 @@ from .helper import PlenticoreDataFormatter, ProcessDataUpdateCoordinator
 _LOGGER = logging.getLogger(__name__)
 
 
-@dataclass(frozen=True)
-class PlenticoreRequiredKeysMixin:
-    """A class that describes required properties for plenticore sensor entities."""
+@dataclass(frozen=True, kw_only=True)
+class PlenticoreSensorEntityDescription(SensorEntityDescription):
+    """A class that describes plenticore sensor entities."""
 
     module_id: str
     formatter: str
 
 
-@dataclass(frozen=True)
-class PlenticoreSensorEntityDescription(
-    SensorEntityDescription, PlenticoreRequiredKeysMixin
-):
-    """A class that describes plenticore sensor entities."""
-
-
 SENSOR_PROCESS_DATA = [
     PlenticoreSensorEntityDescription(
         module_id="devices:local",
diff --git a/homeassistant/components/kostal_plenticore/switch.py b/homeassistant/components/kostal_plenticore/switch.py
index f1e75edd5bd..f2ea1a5ef7c 100644
--- a/homeassistant/components/kostal_plenticore/switch.py
+++ b/homeassistant/components/kostal_plenticore/switch.py
@@ -21,9 +21,9 @@ from .helper import SettingDataUpdateCoordinator
 _LOGGER = logging.getLogger(__name__)
 
 
-@dataclass(frozen=True)
-class PlenticoreRequiredKeysMixin:
-    """A class that describes required properties for plenticore switch entities."""
+@dataclass(frozen=True, kw_only=True)
+class PlenticoreSwitchEntityDescription(SwitchEntityDescription):
+    """A class that describes plenticore switch entities."""
 
     module_id: str
     is_on: str
@@ -33,13 +33,6 @@ class PlenticoreRequiredKeysMixin:
     off_label: str
 
 
-@dataclass(frozen=True)
-class PlenticoreSwitchEntityDescription(
-    SwitchEntityDescription, PlenticoreRequiredKeysMixin
-):
-    """A class that describes plenticore switch entities."""
-
-
 SWITCH_SETTINGS_DATA = [
     PlenticoreSwitchEntityDescription(
         module_id="devices:local",