diff --git a/custom_components/sinapsi_alfa/const.py b/custom_components/sinapsi_alfa/const.py
index b6993ae..2848212 100644
--- a/custom_components/sinapsi_alfa/const.py
+++ b/custom_components/sinapsi_alfa/const.py
@@ -155,7 +155,7 @@
     },
     {
         "name": "Energia Prelevata Giornaliera F4",
-        "key": "energia_prelevata_giornaliera_f1",
+        "key": "energia_prelevata_giornaliera_f4",
         "icon": "mdi:transmission-tower-import",
         "device_class": SensorDeviceClass.ENERGY,
         "state_class": SensorStateClass.TOTAL_INCREASING,
@@ -165,7 +165,7 @@
     },
     {
         "name": "Energia Prelevata Giornaliera F5",
-        "key": "energia_prelevata_giornaliera_f1",
+        "key": "energia_prelevata_giornaliera_f5",
         "icon": "mdi:transmission-tower-import",
         "device_class": SensorDeviceClass.ENERGY,
         "state_class": SensorStateClass.TOTAL_INCREASING,
@@ -215,7 +215,7 @@
     },
     {
         "name": "Energia Immessa Giornaliera F4",
-        "key": "energia_immessa_giornaliera_f1",
+        "key": "energia_immessa_giornaliera_f4",
         "icon": "mdi:transmission-tower-export",
         "device_class": SensorDeviceClass.ENERGY,
         "state_class": SensorStateClass.TOTAL_INCREASING,
@@ -225,7 +225,7 @@
     },
     {
         "name": "Energia Immessa Giornaliera F5",
-        "key": "energia_immessa_giornaliera_f1",
+        "key": "energia_immessa_giornaliera_f5",
         "icon": "mdi:transmission-tower-export",
         "device_class": SensorDeviceClass.ENERGY,
         "state_class": SensorStateClass.TOTAL_INCREASING,
diff --git a/custom_components/sinapsi_alfa/sensor.py b/custom_components/sinapsi_alfa/sensor.py
index 1d23593..1649501 100644
--- a/custom_components/sinapsi_alfa/sensor.py
+++ b/custom_components/sinapsi_alfa/sensor.py
@@ -4,7 +4,6 @@
 """
 
 import logging
-import re
 from typing import Any
 
 from homeassistant.components.sensor import SensorEntity
@@ -53,19 +52,6 @@ async def async_setup_entry(hass: HomeAssistant, config_entry, async_add_entitie
     return True
 
 
-def to_unique_id(raw: str):
-    """Convert string to unique_id."""
-    string = (
-        re.sub(r"(?<=[a-z0-9:_])(?=[A-Z])|[^a-zA-Z0-9:_]", " ", raw)
-        .strip()
-        .replace(" ", "_")
-    )
-    result = "".join(string.lower())
-    while "__" in result:
-        result = result.replace("__", "_")
-    return result
-
-
 class SinapsiAlfaSensor(CoordinatorEntity, SensorEntity):
     """Representation of a Sinapsi Alfa sensor."""
 
@@ -155,7 +141,7 @@ def should_poll(self) -> bool:
     @property
     def unique_id(self):
         """Return a unique ID to use for this entity."""
-        return to_unique_id(f"{self._device_sn}_{self._key}")
+        return f"{DOMAIN}_{self._device_sn}_{self._key}"
 
     @property
     def device_info(self):