diff --git a/homeassistant/components/zinvolt/__init__.py b/homeassistant/components/zinvolt/__init__.py
index e112dfc01e2..adee797b00a 100644
--- a/homeassistant/components/zinvolt/__init__.py
+++ b/homeassistant/components/zinvolt/__init__.py
@@ -15,6 +15,7 @@ from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from .coordinator import ZinvoltConfigEntry, ZinvoltDeviceCoordinator
 
 _PLATFORMS: list[Platform] = [
+    Platform.BINARY_SENSOR,
     Platform.SENSOR,
     Platform.NUMBER,
 ]
diff --git a/homeassistant/components/zinvolt/binary_sensor.py b/homeassistant/components/zinvolt/binary_sensor.py
new file mode 100644
index 00000000000..2ba73f5ea6b
--- /dev/null
+++ b/homeassistant/components/zinvolt/binary_sensor.py
@@ -0,0 +1,71 @@
+"""Binary sensor platform for Zinvolt integration."""
+
+from collections.abc import Callable
+from dataclasses import dataclass
+
+from zinvolt.models import BatteryState
+
+from homeassistant.components.binary_sensor import (
+    BinarySensorDeviceClass,
+    BinarySensorEntity,
+    BinarySensorEntityDescription,
+)
+from homeassistant.const import EntityCategory
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+
+from .coordinator import ZinvoltConfigEntry, ZinvoltDeviceCoordinator
+from .entity import ZinvoltEntity
+
+
+@dataclass(kw_only=True, frozen=True)
+class ZinvoltBatteryStateDescription(BinarySensorEntityDescription):
+    """Binary sensor description for Zinvolt battery state."""
+
+    is_on_fn: Callable[[BatteryState], bool]
+
+
+SENSORS: tuple[ZinvoltBatteryStateDescription, ...] = (
+    ZinvoltBatteryStateDescription(
+        key="on_grid",
+        translation_key="on_grid",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        device_class=BinarySensorDeviceClass.CONNECTIVITY,
+        is_on_fn=lambda state: state.current_power.on_grid,
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ZinvoltConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Initialize the entries."""
+
+    async_add_entities(
+        ZinvoltBatteryStateBinarySensor(coordinator, description)
+        for description in SENSORS
+        for coordinator in entry.runtime_data.values()
+    )
+
+
+class ZinvoltBatteryStateBinarySensor(ZinvoltEntity, BinarySensorEntity):
+    """Zinvolt battery state binary sensor."""
+
+    entity_description: ZinvoltBatteryStateDescription
+
+    def __init__(
+        self,
+        coordinator: ZinvoltDeviceCoordinator,
+        description: ZinvoltBatteryStateDescription,
+    ) -> None:
+        """Initialize the binary sensor."""
+        super().__init__(coordinator)
+        self.entity_description = description
+        self._attr_unique_id = f"{coordinator.data.serial_number}.{description.key}"
+
+    @property
+    def is_on(self) -> bool:
+        """Return the state of the binary sensor."""
+        return self.entity_description.is_on_fn(self.coordinator.data)
diff --git a/homeassistant/components/zinvolt/strings.json b/homeassistant/components/zinvolt/strings.json
index 9b613651c50..fe06fac602d 100644
--- a/homeassistant/components/zinvolt/strings.json
+++ b/homeassistant/components/zinvolt/strings.json
@@ -22,6 +22,11 @@
     }
   },
   "entity": {
+    "binary_sensor": {
+      "on_grid": {
+        "name": "Grid connection"
+      }
+    },
     "number": {
       "lower_threshold": {
         "name": "Minimum charge level"
diff --git a/tests/components/zinvolt/snapshots/test_binary_sensor.ambr b/tests/components/zinvolt/snapshots/test_binary_sensor.ambr
new file mode 100644
index 00000000000..6894b6c8c20
--- /dev/null
+++ b/tests/components/zinvolt/snapshots/test_binary_sensor.ambr
@@ -0,0 +1,51 @@
+# serializer version: 1
+# name: test_all_entities[binary_sensor.zinvolt_batterij_grid_connection-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'binary_sensor',
+    'entity_category': <EntityCategory.DIAGNOSTIC: 'diagnostic'>,
+    'entity_id': 'binary_sensor.zinvolt_batterij_grid_connection',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Grid connection',
+    'options': dict({
+    }),
+    'original_device_class': <BinarySensorDeviceClass.CONNECTIVITY: 'connectivity'>,
+    'original_icon': None,
+    'original_name': 'Grid connection',
+    'platform': 'zinvolt',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'on_grid',
+    'unique_id': 'ZVG011025120088.on_grid',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[binary_sensor.zinvolt_batterij_grid_connection-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'connectivity',
+      'friendly_name': 'Zinvolt Batterij Grid connection',
+    }),
+    'context': <ANY>,
+    'entity_id': 'binary_sensor.zinvolt_batterij_grid_connection',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
diff --git a/tests/components/zinvolt/test_binary_sensor.py b/tests/components/zinvolt/test_binary_sensor.py
new file mode 100644
index 00000000000..72e14bcd466
--- /dev/null
+++ b/tests/components/zinvolt/test_binary_sensor.py
@@ -0,0 +1,27 @@
+"""Tests for the Zinvolt binary sensor."""
+
+from unittest.mock import AsyncMock, patch
+
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+from . import setup_integration
+
+from tests.common import MockConfigEntry, snapshot_platform
+
+
+async def test_all_entities(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    mock_zinvolt_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+    entity_registry: er.EntityRegistry,
+) -> None:
+    """Test all entities."""
+    with patch("homeassistant.components.zinvolt._PLATFORMS", [Platform.BINARY_SENSOR]):
+        await setup_integration(hass, mock_config_entry)
+
+    await snapshot_platform(hass, entity_registry, snapshot, mock_config_entry.entry_id)