Add MPPT entities for Fronius inverters with more than 4 modules (#182305)

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

homeassistant/components/fronius/sensor.py

@@ -336,10 +336,11 @@ def _modbus_mppt_descriptions(
 
 
 MODBUS_INVERTER_ENTITY_DESCRIPTIONS: list[FroniusSensorEntityDescription] = [
-    # SunSpec model 160 supports up to 4 MPPT modules (GEN24 hybrid, Tauro)
+    # Verto Plus exposes 5 modules (3 PV trackers plus storage charge/discharge),
+    # one more leaves headroom for a hybrid with 4 PV trackers
     *(
         description
-        for mppt_no in range(1, 5)
+        for mppt_no in range(1, 7)
         for description in _modbus_mppt_descriptions(mppt_no)
     ),
     FroniusSensorEntityDescription(

tests/components/fronius/test_modbus.py

@@ -92,6 +92,54 @@ async def test_gen24_storage_mppt(
     assert len(solar_net.modbus_inverter_coordinators) == 1
 
 
+@pytest.mark.usefixtures("entity_registry_enabled_by_default")
+async def test_verto_plus_five_modules(
+    hass: HomeAssistant,
+    aioclient_mock: AiohttpClientMocker,
+    mock_fronius_modbus: MockModbusConnection,
+) -> None:
+    """Test a Verto Plus exposing 3 PV trackers plus storage charge/discharge."""
+    mock_fronius_modbus.for_unit(1).holding.update(
+        build_sunspec_map(
+            [
+                MpptModuleSpec(
+                    id_str="MPPT 1", current=82, voltage=4021, power=3300, energy=1_000
+                ),
+                MpptModuleSpec(
+                    id_str="MPPT 2", current=41, voltage=4022, power=1650, energy=2_000
+                ),
+                MpptModuleSpec(
+                    id_str="MPPT 3", current=20, voltage=4023, power=800, energy=3_000
+                ),
+                MpptModuleSpec(
+                    id_str="StCha 4", current=0, voltage=0, power=0, energy=4_000
+                ),
+                MpptModuleSpec(
+                    id_str="StDisCha 5",
+                    current=12,
+                    voltage=3990,
+                    power=480,
+                    energy=5_000,
+                ),
+            ],
+            storage_wcha_max=5000,
+        )
+    )
+    mock_responses(aioclient_mock, fixture_set="gen24_storage")
+    with patch("homeassistant.components.fronius.PLATFORMS", [Platform.SENSOR]):
+        await setup_fronius_integration(hass, is_logger=False, unique_id="12345678")
+
+    assert_state(hass, "sensor.gen24_storage_mppt_3_dc_power", 800)
+    assert_state(hass, "sensor.gen24_storage_mppt_4_dc_power", 0)
+    assert_state(hass, "sensor.gen24_storage_mppt_5_dc_current", 1.2)
+    assert_state(hass, "sensor.gen24_storage_mppt_5_dc_voltage", 399.0)
+    assert_state(hass, "sensor.gen24_storage_mppt_5_dc_power", 480)
+    assert_state(hass, "sensor.gen24_storage_mppt_5_energy", 5000)
+    assert_state(hass, "sensor.gen24_storage_pv_energy_total", 6000)
+    assert_state(hass, "sensor.gen24_storage_battery_charging_energy_total", 4000)
+    assert_state(hass, "sensor.gen24_storage_battery_discharging_energy_total", 5000)
+
+
 @pytest.mark.usefixtures("entity_registry_enabled_by_default")
 @pytest.mark.parametrize(
     ("storage_id_str", "expected_pv_energy_total"),