diff --git a/homeassistant/components/energyzero/sensor.py b/homeassistant/components/energyzero/sensor.py
index 005abb62e91..6438dc6475a 100644
--- a/homeassistant/components/energyzero/sensor.py
+++ b/homeassistant/components/energyzero/sensor.py
@@ -29,21 +29,14 @@ from .const import DOMAIN, SERVICE_TYPE_DEVICE_NAMES
 from .coordinator import EnergyZeroData, EnergyZeroDataUpdateCoordinator
 
 
-@dataclass(frozen=True)
-class EnergyZeroSensorEntityDescriptionMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class EnergyZeroSensorEntityDescription(SensorEntityDescription):
+    """Describes an EnergyZero sensor entity."""
 
     value_fn: Callable[[EnergyZeroData], float | datetime | None]
     service_type: str
 
 
-@dataclass(frozen=True)
-class EnergyZeroSensorEntityDescription(
-    SensorEntityDescription, EnergyZeroSensorEntityDescriptionMixin
-):
-    """Describes a Pure Energie sensor entity."""
-
-
 SENSORS: tuple[EnergyZeroSensorEntityDescription, ...] = (
     EnergyZeroSensorEntityDescription(
         key="current_hour_price",