diff --git a/homeassistant/components/mill/__init__.py b/homeassistant/components/mill/__init__.py
index 11199e126cf..fe44f4cd221 100644
--- a/homeassistant/components/mill/__init__.py
+++ b/homeassistant/components/mill/__init__.py
@@ -14,7 +14,7 @@ from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 
 from .const import CLOUD, CONNECTION_TYPE, DOMAIN, LOCAL
-from .coordinator import MillDataUpdateCoordinator
+from .coordinator import MillDataUpdateCoordinator, MillHistoricDataUpdateCoordinator
 
 PLATFORMS = [Platform.CLIMATE, Platform.SENSOR]
 
@@ -40,6 +40,12 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         update_interval = timedelta(seconds=30)
         key = entry.data[CONF_USERNAME]
         conn_type = CLOUD
+        historic_data_coordinator = MillHistoricDataUpdateCoordinator(
+            hass,
+            mill_data_connection=mill_data_connection,
+            update_interval=update_interval,
+        )
+        await historic_data_coordinator.async_config_entry_first_refresh()
 
     try:
         if not await mill_data_connection.connect():
diff --git a/homeassistant/components/mill/coordinator.py b/homeassistant/components/mill/coordinator.py
index f5e2b1ba6dd..a1d0a174e92 100644
--- a/homeassistant/components/mill/coordinator.py
+++ b/homeassistant/components/mill/coordinator.py
@@ -25,6 +25,8 @@ from .const import DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
+ONE_YEAR = 1 * 365 * 24
+
 
 class MillDataUpdateCoordinator(DataUpdateCoordinator):
     """Class to manage fetching Mill data."""
@@ -38,6 +40,28 @@ class MillDataUpdateCoordinator(DataUpdateCoordinator):
     ) -> None:
         """Initialize global Mill data updater."""
         self.mill_data_connection = mill_data_connection
+
+        super().__init__(
+            hass,
+            _LOGGER,
+            name=DOMAIN,
+            update_method=mill_data_connection.fetch_heater_and_sensor_data,
+            update_interval=update_interval,
+        )
+
+
+class MillHistoricDataUpdateCoordinator(DataUpdateCoordinator):
+    """Class to manage fetching Mill historic data."""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        update_interval: timedelta | None = None,
+        *,
+        mill_data_connection: Mill,
+    ) -> None:
+        """Initialize global Mill data updater."""
+        self.mill_data_connection = mill_data_connection
         self._last_stats_time = dt_util.utcnow() - timedelta(days=1)
 
         super().__init__(
@@ -47,15 +71,8 @@ class MillDataUpdateCoordinator(DataUpdateCoordinator):
             update_interval=update_interval,
         )
 
-    async def _async_update_data(self) -> dict:
+    async def _async_update_data(self):
         """Update data via API."""
-        data = await self.mill_data_connection.fetch_heater_and_sensor_data()
-        if isinstance(self.mill_data_connection, Mill):
-            await self._insert_statistics()
-        return data
-
-    async def _insert_statistics(self) -> None:
-        """Insert Mill statistics."""
         now = dt_util.utcnow()
         if self._last_stats_time > now - timedelta(hours=1):
             return
@@ -70,7 +87,9 @@ class MillDataUpdateCoordinator(DataUpdateCoordinator):
 
             if not last_stats or not last_stats.get(statistic_id):
                 hourly_data = (
-                    await self.mill_data_connection.fetch_historic_energy_usage(dev_id)
+                    await self.mill_data_connection.fetch_historic_energy_usage(
+                        dev_id, n_days=ONE_YEAR
+                    )
                 )
                 hourly_data = dict(sorted(hourly_data.items(), key=lambda x: x[0]))
                 _sum = 0.0
@@ -133,3 +152,4 @@ class MillDataUpdateCoordinator(DataUpdateCoordinator):
             )
             async_add_external_statistics(self.hass, metadata, statistics)
             self._last_stats_time = now.replace(minute=0, second=0)
+            return
diff --git a/tests/components/mill/test_statistics.py b/tests/components/mill/test_statistics.py
index 0d8cf8a2387..7afa6499aaa 100644
--- a/tests/components/mill/test_statistics.py
+++ b/tests/components/mill/test_statistics.py
@@ -5,7 +5,7 @@ from unittest.mock import AsyncMock
 from mill import Heater, Mill
 
 from homeassistant.components.mill.const import DOMAIN
-from homeassistant.components.mill.coordinator import MillDataUpdateCoordinator
+from homeassistant.components.mill.coordinator import MillHistoricDataUpdateCoordinator
 from homeassistant.components.recorder import Recorder
 from homeassistant.components.recorder.statistics import statistics_during_period
 from homeassistant.core import HomeAssistant
@@ -30,7 +30,7 @@ async def test_async_setup_entry(recorder_mock: Recorder, hass: HomeAssistant) -
 
     statistic_id = f"{DOMAIN}:energy_dev_id"
 
-    coordinator = MillDataUpdateCoordinator(
+    coordinator = MillHistoricDataUpdateCoordinator(
         hass, mill_data_connection=mill_data_connection
     )
     await coordinator._async_update_data()