diff --git a/homeassistant/components/pvoutput/sensor.py b/homeassistant/components/pvoutput/sensor.py
index bcf869d3bba..d9ef71bee69 100644
--- a/homeassistant/components/pvoutput/sensor.py
+++ b/homeassistant/components/pvoutput/sensor.py
@@ -28,20 +28,13 @@ from .const import CONF_SYSTEM_ID, DOMAIN
 from .coordinator import PVOutputDataUpdateCoordinator
 
 
-@dataclass
-class PVOutputSensorEntityDescriptionMixin:
-    """Mixin for required keys."""
+@dataclass(kw_only=True)
+class PVOutputSensorEntityDescription(SensorEntityDescription):
+    """Describes a PVOutput sensor entity."""
 
     value_fn: Callable[[Status], int | float | None]
 
 
-@dataclass
-class PVOutputSensorEntityDescription(
-    SensorEntityDescription, PVOutputSensorEntityDescriptionMixin
-):
-    """Describes a PVOutput sensor entity."""
-
-
 SENSORS: tuple[PVOutputSensorEntityDescription, ...] = (
     PVOutputSensorEntityDescription(
         key="energy_consumption",