diff --git a/homeassistant/components/nut/sensor.py b/homeassistant/components/nut/sensor.py
index 9aaeb830173..50f05503d0f 100644
--- a/homeassistant/components/nut/sensor.py
+++ b/homeassistant/components/nut/sensor.py
@@ -514,6 +514,55 @@ SENSOR_TYPES: Final[dict[str, SensorEntityDescription]] = {
         entity_category=EntityCategory.DIAGNOSTIC,
         entity_registry_enabled_default=False,
     ),
+    "input.bypass.frequency": SensorEntityDescription(
+        key="input.bypass.frequency",
+        name="Input Bypass Frequency",
+        native_unit_of_measurement=UnitOfFrequency.HERTZ,
+        device_class=SensorDeviceClass.FREQUENCY,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "input.bypass.phases": SensorEntityDescription(
+        key="input.bypass.phases",
+        name="Input Bypass Phases",
+        icon="mdi:information-outline",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "input.current": SensorEntityDescription(
+        key="input.current",
+        name="Input Current",
+        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+        device_class=SensorDeviceClass.CURRENT,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "input.phases": SensorEntityDescription(
+        key="input.phases",
+        name="Input Phases",
+        icon="mdi:information-outline",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "input.realpower": SensorEntityDescription(
+        key="input.realpower",
+        name="Current Input Real Power",
+        native_unit_of_measurement=UnitOfPower.WATT,
+        device_class=SensorDeviceClass.POWER,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "output.power.nominal": SensorEntityDescription(
+        key="output.power.nominal",
+        name="Nominal Output Power",
+        native_unit_of_measurement=UnitOfApparentPower.VOLT_AMPERE,
+        device_class=SensorDeviceClass.APPARENT_POWER,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
     "output.current": SensorEntityDescription(
         key="output.current",
         name="Output Current",
@@ -563,6 +612,39 @@ SENSOR_TYPES: Final[dict[str, SensorEntityDescription]] = {
         entity_category=EntityCategory.DIAGNOSTIC,
         entity_registry_enabled_default=False,
     ),
+    "output.phases": SensorEntityDescription(
+        key="output.phases",
+        name="Output Phases",
+        icon="mdi:information-outline",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "output.power": SensorEntityDescription(
+        key="output.power",
+        name="Output Apparent Power",
+        native_unit_of_measurement=UnitOfApparentPower.VOLT_AMPERE,
+        device_class=SensorDeviceClass.APPARENT_POWER,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "output.realpower": SensorEntityDescription(
+        key="output.realpower",
+        name="Current Output Real Power",
+        native_unit_of_measurement=UnitOfPower.WATT,
+        device_class=SensorDeviceClass.POWER,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
+    "output.realpower.nominal": SensorEntityDescription(
+        key="output.realpower.nominal",
+        name="Nominal Output Real Power",
+        native_unit_of_measurement=UnitOfPower.WATT,
+        device_class=SensorDeviceClass.POWER,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        entity_registry_enabled_default=False,
+    ),
     "ambient.humidity": SensorEntityDescription(
         key="ambient.humidity",
         name="Ambient Humidity",
diff --git a/tests/components/nut/fixtures/EATON5P1550.json b/tests/components/nut/fixtures/EATON5P1550.json
new file mode 100644
index 00000000000..cb678bb3058
--- /dev/null
+++ b/tests/components/nut/fixtures/EATON5P1550.json
@@ -0,0 +1,53 @@
+{
+  "battery.charge": "100",
+  "battery.current": "0",
+  "battery.runtime": "17820",
+  "battery.runtime.low": "180",
+  "battery.temperature": "0",
+  "battery.voltage": "38",
+  "device.description": "Eaton 5P 1550",
+  "device.mfr": "EATON",
+  "device.model": "Eaton 5P 1550",
+  "device.type": "ups",
+  "driver.name": "snmp-ups",
+  "driver.parameter.mibs": "ietf",
+  "driver.parameter.pollfreq": "15",
+  "driver.parameter.pollinterval": "2",
+  "driver.parameter.snmp_version": "v1",
+  "driver.parameter.synchronous": "auto",
+  "driver.version": "2.8.0",
+  "driver.version.data": "ietf MIB 1.54",
+  "driver.version.internal": "1.21",
+  "input.bypass.frequency": "0",
+  "input.bypass.phases": "0",
+  "input.current": "0.10",
+  "input.frequency": "50",
+  "input.frequency.nominal": "50",
+  "input.phases": "1",
+  "input.realpower": "0",
+  "input.transfer.high": "294",
+  "input.transfer.low": "160",
+  "input.voltage": "247",
+  "input.voltage.nominal": "230",
+  "output.current": "0",
+  "output.frequency": "50",
+  "output.frequency.nominal": "50",
+  "output.phases": "1",
+  "output.power.nominal": "1550",
+  "output.realpower": "0",
+  "output.realpower.nominal": "1100",
+  "output.voltage": "247",
+  "output.voltage.nominal": "230",
+  "ups.beeper.status": "disabled",
+  "ups.firmware: INV": "02.14.0026",
+  "ups.firmware.aux": "Network Management Card V6.00 LE",
+  "ups.load": "0",
+  "ups.mfr": "EATON",
+  "ups.model": "Eaton 5P 1550",
+  "ups.start.auto": "yes",
+  "ups.status": "OL",
+  "ups.test.result": "done and passed",
+  "ups.timer.reboot": "-1",
+  "ups.timer.shutdown": "-1",
+  "ups.timer.start": "-1"
+}
diff --git a/tests/components/nut/test_sensor.py b/tests/components/nut/test_sensor.py
index b36c6e8bcc4..50d77295dfb 100644
--- a/tests/components/nut/test_sensor.py
+++ b/tests/components/nut/test_sensor.py
@@ -189,6 +189,30 @@ async def test_dl650elcd(hass):
     )
 
 
+async def test_eaton5p1550(hass):
+    """Test creation of EATON5P1550 sensors."""
+
+    config_entry = await async_init_integration(hass, "EATON5P1550")
+    registry = er.async_get(hass)
+    entry = registry.async_get("sensor.ups1_battery_charge")
+    assert entry
+    assert entry.unique_id == f"{config_entry.entry_id}_battery.charge"
+
+    state = hass.states.get("sensor.ups1_battery_charge")
+    assert state.state == "100"
+
+    expected_attributes = {
+        "device_class": "battery",
+        "friendly_name": "Ups1 Battery Charge",
+        "unit_of_measurement": PERCENTAGE,
+    }
+    # Only test for a subset of attributes in case
+    # HA changes the implementation and a new one appears
+    assert all(
+        state.attributes[key] == attr for key, attr in expected_attributes.items()
+    )
+
+
 async def test_blazer_usb(hass):
     """Test creation of blazer_usb sensors."""