diff --git a/packages/modules/devices/tesla/tesla/counter.py b/packages/modules/devices/tesla/tesla/counter.py
index 586214e9dd..91606eecd9 100644
--- a/packages/modules/devices/tesla/tesla/counter.py
+++ b/packages/modules/devices/tesla/tesla/counter.py
@@ -2,6 +2,8 @@
 import logging
 import math
 
+from requests import HTTPError
+
 from modules.common.abstract_device import AbstractCounter
 from modules.common.component_state import CounterState
 from modules.common.component_type import ComponentDescriptor
@@ -16,6 +18,9 @@
 class TeslaCounter(AbstractCounter):
     def __init__(self, component_config: TeslaCounterSetup) -> None:
         self.component_config = component_config
+        # Powerwall 3 / newer gateway firmware no longer provide /api/meters/site (HTTP 404).
+        # Remember that, so we do not request the endpoint again in every cycle.
+        self._meters_site_available = True
 
     def initialize(self) -> None:
         self.store = get_component_value_store(
@@ -71,9 +76,27 @@ def _calc_currents_and_pf_from_pqu(
 
         return currents, pfs
 
+    def _get_meters_site(self, client: PowerwallHttpClient):
+        if not self._meters_site_available:
+            return None
+        try:
+            return client.get_json("/api/meters/site")
+        except HTTPError as e:
+            status = getattr(getattr(e, "response", None), "status_code", None)
+            if status != 404:
+                raise
+            self._meters_site_available = False
+            log.info(
+                "Tesla gateway does not provide /api/meters/site (HTTP 404, e.g. Powerwall 3). "
+                "Using total values from /api/meters/aggregates only."
+            )
+            return None
+
     def update(self, client: PowerwallHttpClient, aggregate):
         try:
-            meters_site = client.get_json("/api/meters/site")
+            meters_site = self._get_meters_site(client)
+            if meters_site is None:
+                raise KeyError("/api/meters/site not available")
             cached = meters_site[0]["Cached_readings"]
 
             voltages = [
diff --git a/packages/modules/devices/tesla/tesla/tesla_test.py b/packages/modules/devices/tesla/tesla/tesla_test.py
index 5b4036118f..947d59e505 100644
--- a/packages/modules/devices/tesla/tesla/tesla_test.py
+++ b/packages/modules/devices/tesla/tesla/tesla_test.py
@@ -5,6 +5,7 @@
 
 from modules.common.configurable_device import ConfigurableDevice
 from modules.devices.tesla.tesla import bat
+from modules.devices.tesla.tesla import counter
 from modules.devices.tesla.tesla import device
 from modules.devices.tesla.tesla.device import Tesla, create_device
 from modules.common.component_state import BatState
@@ -160,3 +161,55 @@ def test_powerwall_update_if_cookie_cached(monkeypatch, requests_mock: requests_
 
     # evaluation
     assert_battery_state_correct(mock_bat_value_store.set.call_args[0][0])
+
+
+def setup_counter_component() -> ConfigurableDevice:
+    device_config = Tesla(configuration=TeslaConfiguration(
+        ip_address="sample-address",
+        email="sample@mail.com",
+        password="some password"))
+    dev = create_device(device_config)
+    dev.add_component(counter.component_descriptor.configuration_factory())
+    return dev
+
+
+def test_powerwall_counter_falls_back_to_aggregates_if_meters_site_404(monkeypatch,
+                                                                       requests_mock: requests_mock.Mocker):
+    # Powerwall 3 with Backup Gateway 2 answers /api/meters/site with HTTP 404
+    # setup
+    mock_counter_value_store = Mock()
+    monkeypatch.setattr(counter, "get_component_value_store", Mock(return_value=mock_counter_value_store))
+    requests_mock.get("https://sample-address/api/meters/aggregates", text=sample_aggregates_json)
+    meters_site_mock = requests_mock.get("https://sample-address/api/meters/site", status_code=404)
+    monkeypatch.setattr(device, "_authenticate",
+                        Mock(return_value={"AuthCookie": "auth-cookie", "UserRecord": "user-record"}))
+    dev = setup_counter_component()
+
+    # execution
+    dev.update()
+    dev.update()
+
+    # evaluation
+    state = mock_counter_value_store.set.call_args[0][0]
+    assert state.power == -21.449996948242188
+    assert state.imported == 3276432.6625
+    assert state.exported == 1136916.6875
+    assert mock_counter_value_store.set.call_count == 2
+    # endpoint is not requested again once it is known to be missing
+    assert meters_site_mock.call_count == 1
+
+
+def test_powerwall_counter_raises_on_other_http_errors(monkeypatch, requests_mock: requests_mock.Mocker):
+    # setup
+    mock_counter_value_store = Mock()
+    monkeypatch.setattr(counter, "get_component_value_store", Mock(return_value=mock_counter_value_store))
+    requests_mock.get("https://sample-address/api/meters/aggregates", text=sample_aggregates_json)
+    requests_mock.get("https://sample-address/api/meters/site", status_code=500)
+    monkeypatch.setattr(device, "_authenticate",
+                        Mock(return_value={"AuthCookie": "auth-cookie", "UserRecord": "user-record"}))
+
+    # execution
+    setup_counter_component().update()
+
+    # evaluation
+    mock_counter_value_store.set.assert_not_called()