diff --git a/homeassistant/components/tesla_fleet/icons.json b/homeassistant/components/tesla_fleet/icons.json
index 3e842c0997a30..449dda93c62a8 100644
--- a/homeassistant/components/tesla_fleet/icons.json
+++ b/homeassistant/components/tesla_fleet/icons.json
@@ -222,6 +222,16 @@
       },
       "wall_connector_state": {
         "default": "mdi:ev-station"
+      },
+      "island_status": {
+        "default": "mdi:help-circle",
+        "state": {
+          "on_grid": "mdi:transmission-tower",
+          "off_grid": "mdi:transmission-tower-off",
+          "off_grid_unintentional": "mdi:transmission-tower-off",
+          "island_status_unknown": "mdi:help-circle",
+          "off_grid_intentional": "mdi:account-cancel"
+        }
       }
     },
     "switch": {
diff --git a/homeassistant/components/tesla_fleet/sensor.py b/homeassistant/components/tesla_fleet/sensor.py
index 4d30a509e1aff..a4f86468f0a9e 100644
--- a/homeassistant/components/tesla_fleet/sensor.py
+++ b/homeassistant/components/tesla_fleet/sensor.py
@@ -378,6 +378,17 @@ class TeslaFleetTimeEntityDescription(SensorEntityDescription):
         device_class=SensorDeviceClass.POWER,
         entity_registry_enabled_default=False,
     ),
+    SensorEntityDescription(
+        key="island_status",
+        options=[
+            "island_status_unknown",
+            "on_grid",
+            "off_grid",
+            "off_grid_unintentional",
+            "off_grid_intentional",
+        ],
+        device_class=SensorDeviceClass.ENUM,
+    ),
 )
 
 WALL_CONNECTOR_DESCRIPTIONS: tuple[SensorEntityDescription, ...] = (
diff --git a/homeassistant/components/tesla_fleet/strings.json b/homeassistant/components/tesla_fleet/strings.json
index 09040de13b044..9b10344ba7d7d 100644
--- a/homeassistant/components/tesla_fleet/strings.json
+++ b/homeassistant/components/tesla_fleet/strings.json
@@ -412,6 +412,16 @@
       "vehicle_state_odometer": {
         "name": "Odometer"
       },
+      "island_status": {
+        "name": "Grid Status",
+        "state": {
+          "island_status_unknown": "Unknown",
+          "on_grid": "Connected",
+          "off_grid": "Disconnected",
+          "off_grid_unintentional": "Disconnected unintentionally",
+          "off_grid_intentional": "Disconnected intentionally"
+        }
+      },
       "vehicle_state_tpms_pressure_fl": {
         "name": "Tire pressure front left"
       },
diff --git a/tests/components/tesla_fleet/snapshots/test_cover.ambr b/tests/components/tesla_fleet/snapshots/test_cover.ambr
index c8eb9fb257ebe..dbdb003d80238 100644
--- a/tests/components/tesla_fleet/snapshots/test_cover.ambr
+++ b/tests/components/tesla_fleet/snapshots/test_cover.ambr
@@ -95,246 +95,6 @@
     'state': 'closed',
   })
 # ---
-# name: test_cover[cover.test_none-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.WINDOW: 'window'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 3>,
-    'translation_key': 'windows',
-    'unique_id': 'LRWXF7EK4KC700000-windows',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover[cover.test_none-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'window',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 3>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'closed',
-  })
-# ---
-# name: test_cover[cover.test_none_2-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_2',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.DOOR: 'door'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 3>,
-    'translation_key': 'charge_state_charge_port_door_open',
-    'unique_id': 'LRWXF7EK4KC700000-charge_state_charge_port_door_open',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover[cover.test_none_2-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'door',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 3>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_2',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'open',
-  })
-# ---
-# name: test_cover[cover.test_none_3-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_3',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.DOOR: 'door'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 1>,
-    'translation_key': 'vehicle_state_ft',
-    'unique_id': 'LRWXF7EK4KC700000-vehicle_state_ft',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover[cover.test_none_3-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'door',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 1>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_3',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'closed',
-  })
-# ---
-# name: test_cover[cover.test_none_4-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_4',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.DOOR: 'door'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 3>,
-    'translation_key': 'vehicle_state_rt',
-    'unique_id': 'LRWXF7EK4KC700000-vehicle_state_rt',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover[cover.test_none_4-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'door',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 3>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_4',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'closed',
-  })
-# ---
-# name: test_cover[cover.test_none_5-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_5',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.WINDOW: 'window'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 11>,
-    'translation_key': 'vehicle_state_sun_roof_state',
-    'unique_id': 'LRWXF7EK4KC700000-vehicle_state_sun_roof_state',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover[cover.test_none_5-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'window',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 11>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_5',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'open',
-  })
-# ---
 # name: test_cover[cover.test_sunroof-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
@@ -575,246 +335,6 @@
     'state': 'open',
   })
 # ---
-# name: test_cover_alt[cover.test_none-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.WINDOW: 'window'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 3>,
-    'translation_key': 'windows',
-    'unique_id': 'LRWXF7EK4KC700000-windows',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover_alt[cover.test_none-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'window',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 3>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'open',
-  })
-# ---
-# name: test_cover_alt[cover.test_none_2-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_2',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.DOOR: 'door'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 3>,
-    'translation_key': 'charge_state_charge_port_door_open',
-    'unique_id': 'LRWXF7EK4KC700000-charge_state_charge_port_door_open',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover_alt[cover.test_none_2-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'door',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 3>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_2',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'open',
-  })
-# ---
-# name: test_cover_alt[cover.test_none_3-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_3',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.DOOR: 'door'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 1>,
-    'translation_key': 'vehicle_state_ft',
-    'unique_id': 'LRWXF7EK4KC700000-vehicle_state_ft',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover_alt[cover.test_none_3-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'door',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 1>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_3',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'open',
-  })
-# ---
-# name: test_cover_alt[cover.test_none_4-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_4',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.DOOR: 'door'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 3>,
-    'translation_key': 'vehicle_state_rt',
-    'unique_id': 'LRWXF7EK4KC700000-vehicle_state_rt',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover_alt[cover.test_none_4-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'door',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 3>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_4',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'open',
-  })
-# ---
-# name: test_cover_alt[cover.test_none_5-entry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'cover',
-    'entity_category': None,
-    'entity_id': 'cover.test_none_5',
-    'has_entity_name': True,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': <CoverDeviceClass.WINDOW: 'window'>,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'tesla_fleet',
-    'previous_unique_id': None,
-    'supported_features': <CoverEntityFeature: 11>,
-    'translation_key': 'vehicle_state_sun_roof_state',
-    'unique_id': 'LRWXF7EK4KC700000-vehicle_state_sun_roof_state',
-    'unit_of_measurement': None,
-  })
-# ---
-# name: test_cover_alt[cover.test_none_5-state]
-  StateSnapshot({
-    'attributes': ReadOnlyDict({
-      'device_class': 'window',
-      'friendly_name': 'Test None',
-      'supported_features': <CoverEntityFeature: 11>,
-    }),
-    'context': <ANY>,
-    'entity_id': 'cover.test_none_5',
-    'last_changed': <ANY>,
-    'last_reported': <ANY>,
-    'last_updated': <ANY>,
-    'state': 'unknown',
-  })
-# ---
 # name: test_cover_alt[cover.test_sunroof-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
diff --git a/tests/components/tesla_fleet/snapshots/test_sensor.ambr b/tests/components/tesla_fleet/snapshots/test_sensor.ambr
index c6a4860056ac7..2c3780749ca48 100644
--- a/tests/components/tesla_fleet/snapshots/test_sensor.ambr
+++ b/tests/components/tesla_fleet/snapshots/test_sensor.ambr
@@ -364,6 +364,89 @@
     'state': '0.0',
   })
 # ---
+# name: test_sensors[sensor.energy_site_grid_status-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'options': list([
+        'island_status_unknown',
+        'on_grid',
+        'off_grid',
+        'off_grid_unintentional',
+        'off_grid_intentional',
+      ]),
+    }),
+    'config_entry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.energy_site_grid_status',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': <SensorDeviceClass.ENUM: 'enum'>,
+    'original_icon': None,
+    'original_name': 'Grid Status',
+    'platform': 'tesla_fleet',
+    'previous_unique_id': None,
+    'supported_features': 0,
+    'translation_key': 'island_status',
+    'unique_id': '123456-island_status',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_sensors[sensor.energy_site_grid_status-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'enum',
+      'friendly_name': 'Energy Site Grid Status',
+      'options': list([
+        'island_status_unknown',
+        'on_grid',
+        'off_grid',
+        'off_grid_unintentional',
+        'off_grid_intentional',
+      ]),
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.energy_site_grid_status',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on_grid',
+  })
+# ---
+# name: test_sensors[sensor.energy_site_grid_status-statealt]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'enum',
+      'friendly_name': 'Energy Site Grid Status',
+      'options': list([
+        'island_status_unknown',
+        'on_grid',
+        'off_grid',
+        'off_grid_unintentional',
+        'off_grid_intentional',
+      ]),
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.energy_site_grid_status',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on_grid',
+  })
+# ---
 # name: test_sensors[sensor.energy_site_load_power-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({