diff --git a/homeassistant/components/somfy/__init__.py b/homeassistant/components/somfy/__init__.py
index cc7499c3492..71d7f7f790c 100644
--- a/homeassistant/components/somfy/__init__.py
+++ b/homeassistant/components/somfy/__init__.py
@@ -1,5 +1,4 @@
 """Support for Somfy hubs."""
-from abc import abstractmethod
 from datetime import timedelta
 import logging
 
@@ -8,20 +7,16 @@ import voluptuous as vol
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET, CONF_OPTIMISTIC
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers import (
     config_entry_oauth2_flow,
     config_validation as cv,
     device_registry as dr,
 )
-from homeassistant.helpers.entity import Entity
-from homeassistant.helpers.update_coordinator import (
-    CoordinatorEntity,
-    DataUpdateCoordinator,
-)
 
 from . import api, config_flow
-from .const import API, COORDINATOR, DOMAIN
+from .const import COORDINATOR, DOMAIN
+from .coordinator import SomfyDataUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -84,25 +79,11 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     )
 
     data = hass.data[DOMAIN]
-    data[API] = api.ConfigEntrySomfyApi(hass, entry, implementation)
-
-    async def _update_all_devices():
-        """Update all the devices."""
-        devices = await hass.async_add_executor_job(data[API].get_devices)
-        previous_devices = data[COORDINATOR].data
-        # Sometimes Somfy returns an empty list.
-        if not devices and previous_devices:
-            _LOGGER.debug(
-                "No devices returned. Assuming the previous ones are still valid"
-            )
-            return previous_devices
-        return {dev.id: dev for dev in devices}
-
-    coordinator = DataUpdateCoordinator(
+    coordinator = SomfyDataUpdateCoordinator(
         hass,
         _LOGGER,
         name="somfy device update",
-        update_method=_update_all_devices,
+        client=api.ConfigEntrySomfyApi(hass, entry, implementation),
         update_interval=SCAN_INTERVAL,
     )
     data[COORDINATOR] = coordinator
@@ -140,70 +121,4 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 
 async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
     """Unload a config entry."""
-    hass.data[DOMAIN].pop(API, None)
     return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
-
-
-class SomfyEntity(CoordinatorEntity, Entity):
-    """Representation of a generic Somfy device."""
-
-    def __init__(self, coordinator, device_id, somfy_api):
-        """Initialize the Somfy device."""
-        super().__init__(coordinator)
-        self._id = device_id
-        self.api = somfy_api
-
-    @property
-    def device(self):
-        """Return data for the device id."""
-        return self.coordinator.data[self._id]
-
-    @property
-    def unique_id(self) -> str:
-        """Return the unique id base on the id returned by Somfy."""
-        return self._id
-
-    @property
-    def name(self) -> str:
-        """Return the name of the device."""
-        return self.device.name
-
-    @property
-    def device_info(self):
-        """Return device specific attributes.
-
-        Implemented by platform classes.
-        """
-        return {
-            "identifiers": {(DOMAIN, self.unique_id)},
-            "name": self.name,
-            "model": self.device.type,
-            "via_device": (DOMAIN, self.device.parent_id),
-            # For the moment, Somfy only returns their own device.
-            "manufacturer": "Somfy",
-        }
-
-    def has_capability(self, capability: str) -> bool:
-        """Test if device has a capability."""
-        capabilities = self.device.capabilities
-        return bool([c for c in capabilities if c.name == capability])
-
-    def has_state(self, state: str) -> bool:
-        """Test if device has a state."""
-        states = self.device.states
-        return bool([c for c in states if c.name == state])
-
-    @property
-    def assumed_state(self) -> bool:
-        """Return if the device has an assumed state."""
-        return not bool(self.device.states)
-
-    @callback
-    def _handle_coordinator_update(self):
-        """Process an update from the coordinator."""
-        self._create_device()
-        super()._handle_coordinator_update()
-
-    @abstractmethod
-    def _create_device(self):
-        """Update the device with the latest data."""
diff --git a/homeassistant/components/somfy/climate.py b/homeassistant/components/somfy/climate.py
index 66602aea3e6..0963321100c 100644
--- a/homeassistant/components/somfy/climate.py
+++ b/homeassistant/components/somfy/climate.py
@@ -23,8 +23,8 @@ from homeassistant.components.climate.const import (
 )
 from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS
 
-from . import SomfyEntity
-from .const import API, COORDINATOR, DOMAIN
+from .const import COORDINATOR, DOMAIN
+from .entity import SomfyEntity
 
 SUPPORTED_CATEGORIES = {Category.HVAC.value}
 
@@ -49,10 +49,9 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     """Set up the Somfy climate platform."""
     domain_data = hass.data[DOMAIN]
     coordinator = domain_data[COORDINATOR]
-    api = domain_data[API]
 
     climates = [
-        SomfyClimate(coordinator, device_id, api)
+        SomfyClimate(coordinator, device_id)
         for device_id, device in coordinator.data.items()
         if SUPPORTED_CATEGORIES & set(device.categories)
     ]
@@ -63,15 +62,15 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
 class SomfyClimate(SomfyEntity, ClimateEntity):
     """Representation of a Somfy thermostat device."""
 
-    def __init__(self, coordinator, device_id, api):
+    def __init__(self, coordinator, device_id):
         """Initialize the Somfy device."""
-        super().__init__(coordinator, device_id, api)
+        super().__init__(coordinator, device_id)
         self._climate = None
         self._create_device()
 
     def _create_device(self):
         """Update the device with the latest data."""
-        self._climate = Thermostat(self.device, self.api)
+        self._climate = Thermostat(self.device, self.coordinator.client)
 
     @property
     def supported_features(self) -> int:
diff --git a/homeassistant/components/somfy/const.py b/homeassistant/components/somfy/const.py
index 128d6eb76bb..6c7c23e3ab3 100644
--- a/homeassistant/components/somfy/const.py
+++ b/homeassistant/components/somfy/const.py
@@ -2,4 +2,3 @@
 
 DOMAIN = "somfy"
 COORDINATOR = "coordinator"
-API = "api"
diff --git a/homeassistant/components/somfy/coordinator.py b/homeassistant/components/somfy/coordinator.py
new file mode 100644
index 00000000000..c9633c4fa4d
--- /dev/null
+++ b/homeassistant/components/somfy/coordinator.py
@@ -0,0 +1,71 @@
+"""Helpers to help coordinate updated."""
+from __future__ import annotations
+
+from datetime import timedelta
+import logging
+
+from pymfy.api.error import QuotaViolationException, SetupNotFoundException
+from pymfy.api.model import Device
+from pymfy.api.somfy_api import SomfyApi
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
+
+
+class SomfyDataUpdateCoordinator(DataUpdateCoordinator):
+    """Class to manage fetching Somfy data."""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        logger: logging.Logger,
+        *,
+        name: str,
+        client: SomfyApi,
+        update_interval: timedelta | None = None,
+    ) -> None:
+        """Initialize global data updater."""
+        super().__init__(
+            hass,
+            logger,
+            name=name,
+            update_interval=update_interval,
+        )
+        self.data = {}
+        self.client = client
+        self.site_device = {}
+        self.last_site_index = -1
+
+    async def _async_update_data(self) -> dict[str, Device]:
+        """Fetch Somfy data.
+
+        Somfy only allow one call per minute to /site. There is one exception: 2 calls are allowed after site retrieval.
+        """
+        if not self.site_device:
+            sites = await self.hass.async_add_executor_job(self.client.get_sites)
+            if not sites:
+                return {}
+            self.site_device = {site.id: [] for site in sites}
+
+        site_id = self._site_id
+        try:
+            devices = await self.hass.async_add_executor_job(
+                self.client.get_devices, site_id
+            )
+            self.site_device[site_id] = devices
+        except SetupNotFoundException:
+            del self.site_device[site_id]
+            return await self._async_update_data()
+        except QuotaViolationException:
+            self.logger.warning("Quota violation")
+
+        return {dev.id: dev for devices in self.site_device.values() for dev in devices}
+
+    @property
+    def _site_id(self):
+        """Return the next site id to retrieve.
+
+        This tweak is required as Somfy does not allow to call the /site entrypoint more than once per minute.
+        """
+        self.last_site_index = (self.last_site_index + 1) % len(self.site_device)
+        return list(self.site_device.keys())[self.last_site_index]
diff --git a/homeassistant/components/somfy/cover.py b/homeassistant/components/somfy/cover.py
index d227bc31227..8ed06b3bcd7 100644
--- a/homeassistant/components/somfy/cover.py
+++ b/homeassistant/components/somfy/cover.py
@@ -21,8 +21,8 @@ from homeassistant.components.cover import (
 from homeassistant.const import CONF_OPTIMISTIC, STATE_CLOSED, STATE_OPEN
 from homeassistant.helpers.restore_state import RestoreEntity
 
-from . import SomfyEntity
-from .const import API, COORDINATOR, DOMAIN
+from .const import COORDINATOR, DOMAIN
+from .entity import SomfyEntity
 
 BLIND_DEVICE_CATEGORIES = {Category.INTERIOR_BLIND.value, Category.EXTERIOR_BLIND.value}
 SHUTTER_DEVICE_CATEGORIES = {Category.EXTERIOR_BLIND.value}
@@ -37,10 +37,9 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     """Set up the Somfy cover platform."""
     domain_data = hass.data[DOMAIN]
     coordinator = domain_data[COORDINATOR]
-    api = domain_data[API]
 
     covers = [
-        SomfyCover(coordinator, device_id, api, domain_data[CONF_OPTIMISTIC])
+        SomfyCover(coordinator, device_id, domain_data[CONF_OPTIMISTIC])
         for device_id, device in coordinator.data.items()
         if SUPPORTED_CATEGORIES & set(device.categories)
     ]
@@ -51,9 +50,9 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
 class SomfyCover(SomfyEntity, RestoreEntity, CoverEntity):
     """Representation of a Somfy cover device."""
 
-    def __init__(self, coordinator, device_id, api, optimistic):
+    def __init__(self, coordinator, device_id, optimistic):
         """Initialize the Somfy device."""
-        super().__init__(coordinator, device_id, api)
+        super().__init__(coordinator, device_id)
         self.categories = set(self.device.categories)
         self.optimistic = optimistic
         self._closed = None
@@ -64,7 +63,7 @@ class SomfyCover(SomfyEntity, RestoreEntity, CoverEntity):
 
     def _create_device(self) -> Blind:
         """Update the device with the latest data."""
-        self._cover = Blind(self.device, self.api)
+        self._cover = Blind(self.device, self.coordinator.client)
 
     @property
     def supported_features(self) -> int:
diff --git a/homeassistant/components/somfy/entity.py b/homeassistant/components/somfy/entity.py
new file mode 100644
index 00000000000..88ff86e8849
--- /dev/null
+++ b/homeassistant/components/somfy/entity.py
@@ -0,0 +1,73 @@
+"""Entity representing a Somfy device."""
+
+from abc import abstractmethod
+
+from homeassistant.core import callback
+from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import DOMAIN
+
+
+class SomfyEntity(CoordinatorEntity, Entity):
+    """Representation of a generic Somfy device."""
+
+    def __init__(self, coordinator, device_id):
+        """Initialize the Somfy device."""
+        super().__init__(coordinator)
+        self._id = device_id
+
+    @property
+    def device(self):
+        """Return data for the device id."""
+        return self.coordinator.data[self._id]
+
+    @property
+    def unique_id(self) -> str:
+        """Return the unique id base on the id returned by Somfy."""
+        return self._id
+
+    @property
+    def name(self) -> str:
+        """Return the name of the device."""
+        return self.device.name
+
+    @property
+    def device_info(self):
+        """Return device specific attributes.
+
+        Implemented by platform classes.
+        """
+        return {
+            "identifiers": {(DOMAIN, self.unique_id)},
+            "name": self.name,
+            "model": self.device.type,
+            "via_device": (DOMAIN, self.device.parent_id),
+            # For the moment, Somfy only returns their own device.
+            "manufacturer": "Somfy",
+        }
+
+    def has_capability(self, capability: str) -> bool:
+        """Test if device has a capability."""
+        capabilities = self.device.capabilities
+        return bool([c for c in capabilities if c.name == capability])
+
+    def has_state(self, state: str) -> bool:
+        """Test if device has a state."""
+        states = self.device.states
+        return bool([c for c in states if c.name == state])
+
+    @property
+    def assumed_state(self) -> bool:
+        """Return if the device has an assumed state."""
+        return not bool(self.device.states)
+
+    @callback
+    def _handle_coordinator_update(self):
+        """Process an update from the coordinator."""
+        self._create_device()
+        super()._handle_coordinator_update()
+
+    @abstractmethod
+    def _create_device(self):
+        """Update the device with the latest data."""
diff --git a/homeassistant/components/somfy/manifest.json b/homeassistant/components/somfy/manifest.json
index 8dad4abd6cc..1adbab49fb2 100644
--- a/homeassistant/components/somfy/manifest.json
+++ b/homeassistant/components/somfy/manifest.json
@@ -5,7 +5,7 @@
   "documentation": "https://www.home-assistant.io/integrations/somfy",
   "dependencies": ["http"],
   "codeowners": ["@tetienne"],
-  "requirements": ["pymfy==0.9.3"],
+  "requirements": ["pymfy==0.11.0"],
   "zeroconf": [
     {
       "type": "_kizbox._tcp.local.",
diff --git a/homeassistant/components/somfy/sensor.py b/homeassistant/components/somfy/sensor.py
index 312c425cf87..1817ba3fd8c 100644
--- a/homeassistant/components/somfy/sensor.py
+++ b/homeassistant/components/somfy/sensor.py
@@ -6,8 +6,8 @@ from pymfy.api.devices.thermostat import Thermostat
 from homeassistant.components.sensor import SensorEntity
 from homeassistant.const import DEVICE_CLASS_BATTERY, PERCENTAGE
 
-from . import SomfyEntity
-from .const import API, COORDINATOR, DOMAIN
+from .const import COORDINATOR, DOMAIN
+from .entity import SomfyEntity
 
 SUPPORTED_CATEGORIES = {Category.HVAC.value}
 
@@ -16,10 +16,9 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     """Set up the Somfy sensor platform."""
     domain_data = hass.data[DOMAIN]
     coordinator = domain_data[COORDINATOR]
-    api = domain_data[API]
 
     sensors = [
-        SomfyThermostatBatterySensor(coordinator, device_id, api)
+        SomfyThermostatBatterySensor(coordinator, device_id)
         for device_id, device in coordinator.data.items()
         if SUPPORTED_CATEGORIES & set(device.categories)
     ]
@@ -33,15 +32,15 @@ class SomfyThermostatBatterySensor(SomfyEntity, SensorEntity):
     _attr_device_class = DEVICE_CLASS_BATTERY
     _attr_unit_of_measurement = PERCENTAGE
 
-    def __init__(self, coordinator, device_id, api):
+    def __init__(self, coordinator, device_id):
         """Initialize the Somfy device."""
-        super().__init__(coordinator, device_id, api)
+        super().__init__(coordinator, device_id)
         self._climate = None
         self._create_device()
 
     def _create_device(self):
         """Update the device with the latest data."""
-        self._climate = Thermostat(self.device, self.api)
+        self._climate = Thermostat(self.device, self.coordinator.client)
 
     @property
     def state(self) -> int:
diff --git a/homeassistant/components/somfy/switch.py b/homeassistant/components/somfy/switch.py
index 66eef99d6b5..bd0b1dce5d5 100644
--- a/homeassistant/components/somfy/switch.py
+++ b/homeassistant/components/somfy/switch.py
@@ -4,18 +4,17 @@ from pymfy.api.devices.category import Category
 
 from homeassistant.components.switch import SwitchEntity
 
-from . import SomfyEntity
-from .const import API, COORDINATOR, DOMAIN
+from .const import COORDINATOR, DOMAIN
+from .entity import SomfyEntity
 
 
 async def async_setup_entry(hass, config_entry, async_add_entities):
     """Set up the Somfy switch platform."""
     domain_data = hass.data[DOMAIN]
     coordinator = domain_data[COORDINATOR]
-    api = domain_data[API]
 
     switches = [
-        SomfyCameraShutter(coordinator, device_id, api)
+        SomfyCameraShutter(coordinator, device_id)
         for device_id, device in coordinator.data.items()
         if Category.CAMERA.value in device.categories
     ]
@@ -26,14 +25,14 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
 class SomfyCameraShutter(SomfyEntity, SwitchEntity):
     """Representation of a Somfy Camera Shutter device."""
 
-    def __init__(self, coordinator, device_id, api):
+    def __init__(self, coordinator, device_id):
         """Initialize the Somfy device."""
-        super().__init__(coordinator, device_id, api)
+        super().__init__(coordinator, device_id)
         self._create_device()
 
     def _create_device(self):
         """Update the device with the latest data."""
-        self.shutter = CameraProtect(self.device, self.api)
+        self.shutter = CameraProtect(self.device, self.coordinator.client)
 
     def turn_on(self, **kwargs) -> None:
         """Turn the entity on."""
diff --git a/requirements_all.txt b/requirements_all.txt
index 80b97205115..65858084e5f 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1582,7 +1582,7 @@ pymelcloud==2.5.3
 pymeteoclimatic==0.0.6
 
 # homeassistant.components.somfy
-pymfy==0.9.3
+pymfy==0.11.0
 
 # homeassistant.components.xiaomi_tv
 pymitv==1.4.3
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 306c158d627..fae02a7c4f5 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -896,7 +896,7 @@ pymelcloud==2.5.3
 pymeteoclimatic==0.0.6
 
 # homeassistant.components.somfy
-pymfy==0.9.3
+pymfy==0.11.0
 
 # homeassistant.components.mochad
 pymochad==0.2.0
diff --git a/tests/components/somfy/test_config_flow.py b/tests/components/somfy/test_config_flow.py
index b7d78883706..6a1c32e4138 100644
--- a/tests/components/somfy/test_config_flow.py
+++ b/tests/components/somfy/test_config_flow.py
@@ -82,7 +82,9 @@ async def test_full_flow(
         },
     )
 
-    with patch("homeassistant.components.somfy.api.ConfigEntrySomfyApi"):
+    with patch(
+        "homeassistant.components.somfy.async_setup_entry", return_value=True
+    ) as mock_setup_entry:
         result = await hass.config_entries.flow.async_configure(result["flow_id"])
 
     assert result["data"]["auth_implementation"] == DOMAIN
@@ -95,12 +97,7 @@ async def test_full_flow(
         "expires_in": 60,
     }
 
-    assert DOMAIN in hass.config.components
-    entry = hass.config_entries.async_entries(DOMAIN)[0]
-    assert entry.state is config_entries.ConfigEntryState.LOADED
-
-    assert await hass.config_entries.async_unload(entry.entry_id)
-    assert entry.state is config_entries.ConfigEntryState.NOT_LOADED
+    assert len(mock_setup_entry.mock_calls) == 1
 
 
 async def test_abort_if_authorization_timeout(hass, current_request_with_host):