diff --git a/homeassistant/components/aurora_abb_powerone/__init__.py b/homeassistant/components/aurora_abb_powerone/__init__.py
index 8d236b30d97..749d40aeb5c 100644
--- a/homeassistant/components/aurora_abb_powerone/__init__.py
+++ b/homeassistant/components/aurora_abb_powerone/__init__.py
@@ -10,21 +10,15 @@
 # and add the following to the end of script/bootstrap:
 # sudo chmod 777 /dev/ttyUSB0
 
-import logging
-
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_ADDRESS, CONF_PORT, Platform
 from homeassistant.core import HomeAssistant
 
-from .const import DOMAIN
-from .coordinator import AuroraAbbDataUpdateCoordinator
+from .coordinator import AuroraAbbConfigEntry, AuroraAbbDataUpdateCoordinator
 
 PLATFORMS = [Platform.SENSOR]
 
-_LOGGER = logging.getLogger(__name__)
 
-
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_setup_entry(hass: HomeAssistant, entry: AuroraAbbConfigEntry) -> bool:
     """Set up Aurora ABB PowerOne from a config entry."""
 
     comport = entry.data[CONF_PORT]
@@ -32,19 +26,13 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     coordinator = AuroraAbbDataUpdateCoordinator(hass, comport, address)
     await coordinator.async_config_entry_first_refresh()
 
-    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
+    entry.runtime_data = coordinator
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
 
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_unload_entry(hass: HomeAssistant, entry: AuroraAbbConfigEntry) -> bool:
     """Unload a config entry."""
 
-    unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
-    # It should not be necessary to close the serial port because we close
-    # it after every use in sensor.py, i.e. no need to do entry["client"].close()
-    if unload_ok:
-        hass.data[DOMAIN].pop(entry.entry_id)
-
-    return unload_ok
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
diff --git a/homeassistant/components/aurora_abb_powerone/coordinator.py b/homeassistant/components/aurora_abb_powerone/coordinator.py
index 0dd87e75766..c3d05da95f3 100644
--- a/homeassistant/components/aurora_abb_powerone/coordinator.py
+++ b/homeassistant/components/aurora_abb_powerone/coordinator.py
@@ -6,6 +6,7 @@ from time import sleep
 from aurorapy.client import AuroraError, AuroraSerialClient, AuroraTimeoutError
 from serial import SerialException
 
+from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
@@ -14,6 +15,9 @@ from .const import DOMAIN, SCAN_INTERVAL
 _LOGGER = logging.getLogger(__name__)
 
 
+type AuroraAbbConfigEntry = ConfigEntry[AuroraAbbDataUpdateCoordinator]
+
+
 class AuroraAbbDataUpdateCoordinator(DataUpdateCoordinator[dict[str, float]]):
     """Class to manage fetching AuroraAbbPowerone data."""
 
diff --git a/homeassistant/components/aurora_abb_powerone/sensor.py b/homeassistant/components/aurora_abb_powerone/sensor.py
index 6e3ebb5f5c9..29d5cab2667 100644
--- a/homeassistant/components/aurora_abb_powerone/sensor.py
+++ b/homeassistant/components/aurora_abb_powerone/sensor.py
@@ -14,7 +14,6 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
     SensorStateClass,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     ATTR_SERIAL_NUMBER,
     EntityCategory,
@@ -31,7 +30,6 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from . import AuroraAbbDataUpdateCoordinator
 from .const import (
     ATTR_DEVICE_NAME,
     ATTR_FIRMWARE,
@@ -40,6 +38,7 @@ from .const import (
     DOMAIN,
     MANUFACTURER,
 )
+from .coordinator import AuroraAbbConfigEntry, AuroraAbbDataUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 ALARM_STATES = list(AuroraMapping.ALARM_STATES.values())
@@ -130,12 +129,12 @@ SENSOR_TYPES = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    config_entry: ConfigEntry,
+    config_entry: AuroraAbbConfigEntry,
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up aurora_abb_powerone sensor based on a config entry."""
 
-    coordinator = hass.data[DOMAIN][config_entry.entry_id]
+    coordinator = config_entry.runtime_data
     data = config_entry.data
 
     entities = [AuroraSensor(coordinator, data, sens) for sens in SENSOR_TYPES]