diff --git a/homeassistant/components/shelly/binary_sensor.py b/homeassistant/components/shelly/binary_sensor.py
index 1474906cacb..a5889cd11a7 100644
--- a/homeassistant/components/shelly/binary_sensor.py
+++ b/homeassistant/components/shelly/binary_sensor.py
@@ -164,6 +164,14 @@ RPC_SENSORS: Final = {
         entity_registry_enabled_default=False,
         entity_category=EntityCategory.DIAGNOSTIC,
     ),
+    "external_power": RpcBinarySensorDescription(
+        key="devicepower:0",
+        sub_key="external",
+        name="External power",
+        value=lambda status, _: status["present"],
+        device_class=BinarySensorDeviceClass.POWER,
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
     "overtemp": RpcBinarySensorDescription(
         key="switch",
         sub_key="errors",
diff --git a/tests/components/shelly/conftest.py b/tests/components/shelly/conftest.py
index 2a80233aeb9..96e888d7509 100644
--- a/tests/components/shelly/conftest.py
+++ b/tests/components/shelly/conftest.py
@@ -189,6 +189,7 @@ MOCK_STATUS_RPC = {
         "current_pos": 50,
         "apower": 85.3,
     },
+    "devicepower:0": {"external": {"present": True}},
     "temperature:0": {"tC": 22.9},
     "illuminance:0": {"lux": 345},
     "sys": {
diff --git a/tests/components/shelly/test_binary_sensor.py b/tests/components/shelly/test_binary_sensor.py
index 207b73bf44b..c067f5dffc9 100644
--- a/tests/components/shelly/test_binary_sensor.py
+++ b/tests/components/shelly/test_binary_sensor.py
@@ -218,6 +218,11 @@ async def test_rpc_sleeping_binary_sensor(
 
     assert hass.states.get(entity_id).state == STATE_ON
 
+    # test external power sensor
+    state = hass.states.get("binary_sensor.test_name_external_power")
+    assert state
+    assert state.state == STATE_ON
+
 
 async def test_rpc_restored_sleeping_binary_sensor(
     hass: HomeAssistant, mock_rpc_device, device_reg, monkeypatch