diff --git a/tests/components/enphase_envoy/test_sensor.py b/tests/components/enphase_envoy/test_sensor.py
index d0d347d9df0..1b066ca9f59 100644
--- a/tests/components/enphase_envoy/test_sensor.py
+++ b/tests/components/enphase_envoy/test_sensor.py
@@ -3,12 +3,14 @@
 from itertools import chain
 from unittest.mock import AsyncMock, patch
 
+from freezegun.api import FrozenDateTimeFactory
 from pyenphase.const import PHASENAMES
 import pytest
 from syrupy.assertion import SnapshotAssertion
 
 from homeassistant.components.enphase_envoy.const import Platform
-from homeassistant.const import UnitOfTemperature
+from homeassistant.components.enphase_envoy.coordinator import SCAN_INTERVAL
+from homeassistant.const import STATE_UNKNOWN, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import entity_registry as er
 from homeassistant.util import dt as dt_util
@@ -16,7 +18,7 @@ from homeassistant.util.unit_conversion import TemperatureConverter
 
 from . import setup_integration
 
-from tests.common import MockConfigEntry, snapshot_platform
+from tests.common import MockConfigEntry, async_fire_time_changed, snapshot_platform
 
 
 @pytest.mark.parametrize(
@@ -843,3 +845,64 @@ def integration_disabled_entities(
         )
         if entity_entry.disabled_by == er.RegistryEntryDisabler.INTEGRATION
     ]
+
+
+@pytest.mark.parametrize(
+    ("mock_envoy"),
+    [
+        "envoy_metered_batt_relay",
+    ],
+    indirect=["mock_envoy"],
+)
+@pytest.mark.usefixtures("entity_registry_enabled_by_default")
+async def test_sensor_missing_data(
+    hass: HomeAssistant,
+    config_entry: MockConfigEntry,
+    mock_envoy: AsyncMock,
+    entity_registry: er.EntityRegistry,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test enphase_envoy sensor platform midding data handling."""
+    with patch("homeassistant.components.enphase_envoy.PLATFORMS", [Platform.SENSOR]):
+        await setup_integration(hass, config_entry)
+
+    ENTITY_BASE = f"{Platform.SENSOR}.envoy_{mock_envoy.serial_number}"
+
+    # force missing data to test 'if == none' code sections
+    mock_envoy.data.system_production_phases["L2"] = None
+    mock_envoy.data.system_consumption_phases["L2"] = None
+    mock_envoy.data.ctmeter_production = None
+    mock_envoy.data.ctmeter_consumption = None
+    mock_envoy.data.ctmeter_storage = None
+    mock_envoy.data.ctmeter_production_phases = None
+    mock_envoy.data.ctmeter_consumption_phases = None
+    mock_envoy.data.ctmeter_storage_phases = None
+
+    # use different inverter serial to test 'expected inverter missing' code
+    mock_envoy.data.inverters["2"] = mock_envoy.data.inverters.pop("1")
+
+    # force HA to detect changed data by changing raw
+    mock_envoy.data.raw = {"I": "am changed"}
+
+    # MOve time to next update
+    freezer.tick(SCAN_INTERVAL)
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done(wait_background_tasks=True)
+
+    # all these should now be in unknown state
+    for entity in (
+        "lifetime_energy_production_l2",
+        "lifetime_energy_consumption_l2",
+        "metering_status_production_ct",
+        "metering_status_net_consumption_ct",
+        "metering_status_storage_ct",
+        "metering_status_production_ct_l2",
+        "metering_status_net_consumption_ct_l2",
+        "metering_status_storage_ct_l2",
+    ):
+        assert (entity_state := hass.states.get(f"{ENTITY_BASE}_{entity}"))
+        assert entity_state.state == STATE_UNKNOWN
+
+    # test the original inverter is now unknown
+    assert (entity_state := hass.states.get("sensor.inverter_1"))
+    assert entity_state.state == STATE_UNKNOWN