diff --git a/homeassistant/components/kostal_plenticore/__init__.py b/homeassistant/components/kostal_plenticore/__init__.py
index 3675b4342b4..c549a8d338f 100644
--- a/homeassistant/components/kostal_plenticore/__init__.py
+++ b/homeassistant/components/kostal_plenticore/__init__.py
@@ -4,42 +4,35 @@ import logging
 
 from pykoplenti import ApiException
 
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
-from .const import DOMAIN
-from .coordinator import Plenticore
+from .coordinator import Plenticore, PlenticoreConfigEntry
 
 _LOGGER = logging.getLogger(__name__)
 
 PLATFORMS = [Platform.NUMBER, Platform.SELECT, Platform.SENSOR, Platform.SWITCH]
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_setup_entry(hass: HomeAssistant, entry: PlenticoreConfigEntry) -> bool:
     """Set up Kostal Plenticore Solar Inverter from a config entry."""
-    hass.data.setdefault(DOMAIN, {})
-
     plenticore = Plenticore(hass, entry)
 
     if not await plenticore.async_setup():
         return False
 
-    hass.data[DOMAIN][entry.entry_id] = plenticore
+    entry.runtime_data = plenticore
 
     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: PlenticoreConfigEntry) -> bool:
     """Unload a config entry."""
-    unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
-    if unload_ok:
-        # remove API object
-        plenticore = hass.data[DOMAIN].pop(entry.entry_id)
+    if unload_ok := await hass.config_entries.async_unload_platforms(entry, PLATFORMS):
         try:
-            await plenticore.async_unload()
+            await entry.runtime_data.async_unload()
         except ApiException as err:
             _LOGGER.error("Error logging out from inverter: %s", err)
 
diff --git a/homeassistant/components/kostal_plenticore/coordinator.py b/homeassistant/components/kostal_plenticore/coordinator.py
index f87f8ca630a..d312130bb54 100644
--- a/homeassistant/components/kostal_plenticore/coordinator.py
+++ b/homeassistant/components/kostal_plenticore/coordinator.py
@@ -30,6 +30,8 @@ from .helper import get_hostname_id
 
 _LOGGER = logging.getLogger(__name__)
 
+type PlenticoreConfigEntry = ConfigEntry[Plenticore]
+
 
 class Plenticore:
     """Manages the Plenticore API."""
@@ -166,12 +168,12 @@ class DataUpdateCoordinatorMixin:
 class PlenticoreUpdateCoordinator[_DataT](DataUpdateCoordinator[_DataT]):
     """Base implementation of DataUpdateCoordinator for Plenticore data."""
 
-    config_entry: ConfigEntry
+    config_entry: PlenticoreConfigEntry
 
     def __init__(
         self,
         hass: HomeAssistant,
-        config_entry: ConfigEntry,
+        config_entry: PlenticoreConfigEntry,
         logger: logging.Logger,
         name: str,
         update_inverval: timedelta,
@@ -248,12 +250,12 @@ class SettingDataUpdateCoordinator(
 class PlenticoreSelectUpdateCoordinator[_DataT](DataUpdateCoordinator[_DataT]):
     """Base implementation of DataUpdateCoordinator for Plenticore data."""
 
-    config_entry: ConfigEntry
+    config_entry: PlenticoreConfigEntry
 
     def __init__(
         self,
         hass: HomeAssistant,
-        config_entry: ConfigEntry,
+        config_entry: PlenticoreConfigEntry,
         logger: logging.Logger,
         name: str,
         update_inverval: timedelta,
diff --git a/homeassistant/components/kostal_plenticore/diagnostics.py b/homeassistant/components/kostal_plenticore/diagnostics.py
index 3978869c524..4d4d61f56a7 100644
--- a/homeassistant/components/kostal_plenticore/diagnostics.py
+++ b/homeassistant/components/kostal_plenticore/diagnostics.py
@@ -5,23 +5,21 @@ from __future__ import annotations
 from typing import Any
 
 from homeassistant.components.diagnostics import REDACTED, async_redact_data
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import ATTR_IDENTIFIERS, CONF_PASSWORD
 from homeassistant.core import HomeAssistant
 
-from .const import DOMAIN
-from .coordinator import Plenticore
+from .coordinator import PlenticoreConfigEntry
 
 TO_REDACT = {CONF_PASSWORD}
 
 
 async def async_get_config_entry_diagnostics(
-    hass: HomeAssistant, config_entry: ConfigEntry
+    hass: HomeAssistant, config_entry: PlenticoreConfigEntry
 ) -> dict[str, dict[str, Any]]:
     """Return diagnostics for a config entry."""
     data = {"config_entry": async_redact_data(config_entry.as_dict(), TO_REDACT)}
 
-    plenticore: Plenticore = hass.data[DOMAIN][config_entry.entry_id]
+    plenticore = config_entry.runtime_data
 
     # Get information from Kostal Plenticore library
     available_process_data = await plenticore.client.get_process_data()
diff --git a/homeassistant/components/kostal_plenticore/number.py b/homeassistant/components/kostal_plenticore/number.py
index 7efb00cf8f4..ddb0a84a6cc 100644
--- a/homeassistant/components/kostal_plenticore/number.py
+++ b/homeassistant/components/kostal_plenticore/number.py
@@ -14,15 +14,13 @@ from homeassistant.components.number import (
     NumberEntityDescription,
     NumberMode,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import PERCENTAGE, EntityCategory, UnitOfPower
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .const import DOMAIN
-from .coordinator import SettingDataUpdateCoordinator
+from .coordinator import PlenticoreConfigEntry, SettingDataUpdateCoordinator
 from .helper import PlenticoreDataFormatter
 
 _LOGGER = logging.getLogger(__name__)
@@ -74,11 +72,11 @@ NUMBER_SETTINGS_DATA = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: PlenticoreConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Add Kostal Plenticore Number entities."""
-    plenticore = hass.data[DOMAIN][entry.entry_id]
+    plenticore = entry.runtime_data
 
     entities = []
 
diff --git a/homeassistant/components/kostal_plenticore/select.py b/homeassistant/components/kostal_plenticore/select.py
index 61929b9fadc..86ffb63966d 100644
--- a/homeassistant/components/kostal_plenticore/select.py
+++ b/homeassistant/components/kostal_plenticore/select.py
@@ -7,15 +7,13 @@ from datetime import timedelta
 import logging
 
 from homeassistant.components.select import SelectEntity, SelectEntityDescription
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import EntityCategory
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .const import DOMAIN
-from .coordinator import Plenticore, SelectDataUpdateCoordinator
+from .coordinator import PlenticoreConfigEntry, SelectDataUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -43,11 +41,11 @@ SELECT_SETTINGS_DATA = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: PlenticoreConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Add kostal plenticore Select widget."""
-    plenticore: Plenticore = hass.data[DOMAIN][entry.entry_id]
+    plenticore = entry.runtime_data
 
     available_settings_data = await plenticore.client.get_settings()
     select_data_update_coordinator = SelectDataUpdateCoordinator(
diff --git a/homeassistant/components/kostal_plenticore/sensor.py b/homeassistant/components/kostal_plenticore/sensor.py
index 1be7fb06e7b..aafd6bb1ff6 100644
--- a/homeassistant/components/kostal_plenticore/sensor.py
+++ b/homeassistant/components/kostal_plenticore/sensor.py
@@ -14,7 +14,6 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
     SensorStateClass,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     PERCENTAGE,
     EntityCategory,
@@ -29,8 +28,7 @@ from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .const import DOMAIN
-from .coordinator import ProcessDataUpdateCoordinator
+from .coordinator import PlenticoreConfigEntry, ProcessDataUpdateCoordinator
 from .helper import PlenticoreDataFormatter
 
 _LOGGER = logging.getLogger(__name__)
@@ -808,11 +806,11 @@ SENSOR_PROCESS_DATA = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: PlenticoreConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Add kostal plenticore Sensors."""
-    plenticore = hass.data[DOMAIN][entry.entry_id]
+    plenticore = entry.runtime_data
 
     entities = []
 
diff --git a/homeassistant/components/kostal_plenticore/switch.py b/homeassistant/components/kostal_plenticore/switch.py
index e3d5f830c78..44eced7ca4a 100644
--- a/homeassistant/components/kostal_plenticore/switch.py
+++ b/homeassistant/components/kostal_plenticore/switch.py
@@ -8,15 +8,13 @@ import logging
 from typing import Any
 
 from homeassistant.components.switch import SwitchEntity, SwitchEntityDescription
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import EntityCategory
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
-from .const import DOMAIN
-from .coordinator import SettingDataUpdateCoordinator
+from .coordinator import PlenticoreConfigEntry, SettingDataUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -49,11 +47,11 @@ SWITCH_SETTINGS_DATA = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: PlenticoreConfigEntry,
     async_add_entities: AddConfigEntryEntitiesCallback,
 ) -> None:
     """Add kostal plenticore Switch."""
-    plenticore = hass.data[DOMAIN][entry.entry_id]
+    plenticore = entry.runtime_data
 
     entities = []
 
diff --git a/tests/components/kostal_plenticore/test_helper.py b/tests/components/kostal_plenticore/test_helper.py
index acd33f82a27..96cdc99144b 100644
--- a/tests/components/kostal_plenticore/test_helper.py
+++ b/tests/components/kostal_plenticore/test_helper.py
@@ -67,7 +67,7 @@ async def test_plenticore_async_setup_g1(
     assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()
 
-    plenticore = hass.data[DOMAIN][mock_config_entry.entry_id]
+    plenticore = mock_config_entry.runtime_data
 
     assert plenticore.device_info == DeviceInfo(
         configuration_url="http://192.168.1.2",
@@ -119,7 +119,7 @@ async def test_plenticore_async_setup_g2(
     assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()
 
-    plenticore = hass.data[DOMAIN][mock_config_entry.entry_id]
+    plenticore = mock_config_entry.runtime_data
 
     assert plenticore.device_info == DeviceInfo(
         configuration_url="http://192.168.1.2",