diff --git a/homeassistant/const.py b/homeassistant/const.py
index 766d78e7ac6..7601dd05dd4 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -478,10 +478,22 @@ ATTR_PERSONS: Final = "persons"
 # Apparent power units
 POWER_VOLT_AMPERE: Final = "VA"
 
+
 # Power units
+class UnitOfPower(StrEnum):
+    """Power units."""
+
+    WATT = "W"
+    KILO_WATT = "kW"
+    BTU_PER_HOUR = "BTU/h"
+
+
 POWER_WATT: Final = "W"
+"""Deprecated: please use UnitOfPower.WATT."""
 POWER_KILO_WATT: Final = "kW"
+"""Deprecated: please use UnitOfPower.KILO_WATT."""
 POWER_BTU_PER_HOUR: Final = "BTU/h"
+"""Deprecated: please use UnitOfPower.BTU_PER_HOUR."""
 
 # Reactive power units
 POWER_VOLT_AMPERE_REACTIVE: Final = "var"