fix(teslemetry): model Powerwalls as AC coupled, publish site_info

Tesla Powerwall batteries are AC coupled, but nothing in the Teslemetry
component or the TESLA inverter type set inverter_hybrid, so it stayed at
Predbat's default of on.

That matters because of how the two settings combine. Teslemetry publishes
inverter_limit from site_info, and max_site_meter_power_ac is usually the 1e9
"unlimited" sentinel, so it falls back to nameplate_power - the Powerwall's own
AC rating (5 kW on a PW2). With inverter_hybrid on, get_total_inverted() folds
pv_ac into the same budget, so that 5 kW became a cap on battery + PV combined
and a separately inverted solar array was modelled as clipping against a limit
it never passes through.

On a reported site (13.5 kWh PW2, solar measured at 24 kW, 48.6 kWh exported in
one day) that invented 17.7 kWh of clipping and, with it, a 05:00-10:00 export
window whose only purpose was to "recover" the phantom clipped solar. Turning
inverter_hybrid off takes clipping to 0.00 kWh and the morning export window
disappears; the plan keeps only its genuine overnight exports.

The nameplate_power fallback itself is left alone - it is correct once hybrid is
off, because a non-hybrid inverter_limit caps only the battery path, which is
exactly the Powerwall's rating (and 11.5 kW on a PW3).

Also publishes site_info as sensor.<prefix>_teslemetry_site_info so the device's
own view of the site - capacity, AC rating, coupling, export rule - is reviewable
without reading a debug log. The response is republished wholesale rather than as
a hand-picked subset, so future firmware fields appear without a code change and
nothing is lost to a wrong guess about nesting (batteries,
customer_preferred_export_rule and net_meter_mode all live under components). The
large tariff blobs are dropped, the same ones _summarize_for_log already hides.

Supporting refactor: set_state_external moves onto ComponentBase, so components
call self.set_state_external() instead of reaching through
self.base.ha_interface. All 11 call sites across teslemetry, gecloud, web and
web_mcp are migrated, the shared MockBase gains an ha_interface so the standalone
CLI harnesses no longer crash on a component that auto-configures a Predbat
setting, and GECloud's now-redundant local MockHAInterface is removed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: springfall2008

apps/predbat/component_base.py

@@ -313,6 +313,16 @@ def get_state_wrapper(self, entity_id=None, default=None, attribute=None, refres
     def set_state_wrapper(self, entity_id, state, attributes={}, required_unit=None):
         return self.base.set_state_wrapper(entity_id, state, attributes=attributes, required_unit=required_unit)
 
+    async def set_state_external(self, entity_id, state, attributes={}):
+        """Change one of Predbat's OWN entities as if a user had, updating its CONFIG_ITEMS value.
+
+        Distinct from set_state_wrapper, which only writes the entity state: components use this when
+        auto-discovery has to change a Predbat setting (e.g. teslemetry turning inverter_hybrid off
+        for an AC-coupled Powerwall), where writing the state alone would move the displayed entity
+        without changing the value the planner reads.
+        """
+        return await self.base.ha_interface.set_state_external(entity_id, state, attributes=attributes)
+
     def call_notify(self, message):
         return self.base.call_notify(message)
 

apps/predbat/gecloud.py

@@ -1165,7 +1165,7 @@ def build_entities(domain, candidates):
                     break
         entity_id = "switch.{}_inverter_hybrid".format(self.prefix)
         self.log("GECloud: Detected inverter model {} indicates ac_coupled={}, setting {} to {}".format(model_name, ac_coupled, entity_id, "off" if ac_coupled else "on"))
-        await self.base.ha_interface.set_state_external(entity_id, not ac_coupled)
+        await self.set_state_external(entity_id, not ac_coupled)
 
         self.log("GECloud: Automatic configuration complete")
 
@@ -2157,23 +2157,12 @@ def get_data(self):
         return self.mdata, self.oldest_data_time
 
 
-class MockHAInterface:  # pragma: no cover
-    """Mock HA interface for testing"""
-
-    def __init__(self):
-        pass
-
-    async def set_state_external(self, entity_id, state):
-        print(f"Set state external {entity_id} = {state}")
-
-
 class MockBase(SharedMockBase):  # pragma: no cover
-    """Mock base for the GE Cloud command-line harness, with its own cache root and HA interface."""
+    """Mock base for the GE Cloud command-line harness, with its own cache root."""
 
     def __init__(self):
-        """Initialise the shared mock with the GE Cloud cache root and a mock HA interface."""
+        """Initialise the shared mock with the GE Cloud cache root."""
         super().__init__(config_root="./temp_gecloud")
-        self.ha_interface = MockHAInterface()
 
 
 def find_registers_by_name(gecloud_direct, register_name, device=None):  # pragma: no cover

apps/predbat/mock_base.py

@@ -26,6 +26,20 @@
 import json
 
 
+class MockHAInterface:
+    """Minimal stand-in for the HA interface, used by the standalone CLI harnesses.
+
+    ComponentBase.set_state_external forwards here so components can change Predbat's OWN config
+    entities during auto-discovery (e.g. teslemetry turning inverter_hybrid off) - that is the only
+    write path that also updates the matching CONFIG_ITEMS value. Without this the harnesses would
+    crash on any component that auto-configures a Predbat setting.
+    """
+
+    async def set_state_external(self, entity_id, state, attributes={}):
+        """Print an external state write instead of applying it."""
+        print(f"SET EXTERNAL: {entity_id} = {state}")
+
+
 class MockBase:
     """Minimal stand-in for the PredBat base object, used by the standalone CLI harnesses."""
 
@@ -51,6 +65,7 @@ def __init__(self, config_root="./temp_predbat", local_tz=None, **kwargs):
         self.currency_symbols = "£p"
         self.arg_errors = {}
         self.args = {key: value for key, value in kwargs.items() if value is not None}
+        self.ha_interface = MockHAInterface()
 
     def log(self, message, quiet=True):
         """Print a timestamped log line.

apps/predbat/teslemetry.py

@@ -57,6 +57,9 @@
 
 OPERATION_MODES = ["self_consumption", "autonomous", "backup"]
 EXPORT_RULES = ["never", "pv_only", "battery_ok"]
+# Large nested tariff structures that are never worth republishing - hidden from both the debug log
+# summary and the site_info review entity.
+TARIFF_BLOB_KEYS = ("tariff_content", "tariff_content_v2")
 # tou_settings.optimization_strategy: the OTHER dial the Fleet API exposes alongside the tariff itself,
 # deciding whether Time-Based Control actually acts on price. "balanced" (the device default, and what
 # is left in place if this is never sent) only discharges to offset house load and never exports stored
@@ -240,7 +243,7 @@ def _summarize_for_log(data):
         for key in ("time_series", "SmartBreakerEnergyLogs"):
             if isinstance(response.get(key), list):
                 response[key] = "[{} entries hidden]".format(len(response[key]))
-        for key in ("tariff_content", "tariff_content_v2"):
+        for key in TARIFF_BLOB_KEYS:
             if isinstance(response.get(key), dict):
                 response[key] = "[hidden, code={}]".format(response[key].get("code"))
         return {"response": response}
@@ -252,6 +255,21 @@ def publish_sensor(self, suffix, state, unit=None, state_class="measurement", fr
             attributes["unit_of_measurement"] = unit
         self.dashboard_item(self.entity(suffix), state, attributes, app="teslemetry")
 
+    def publish_site_info(self, response):
+        """Publish the site_info response as one entity so the device's own view of the site is reviewable.
+
+        Capacity, AC rating, battery coupling and the export rule all come from here and all change how
+        Predbat models the site, but none of it was visible outside a debug log line. The whole response
+        is published rather than a hand-picked subset, so fields added by future firmware appear without
+        a code change - and so nothing is lost to a wrong guess about where a field is nested (batteries,
+        customer_preferred_export_rule and net_meter_mode all live under components, not at the top).
+        Only the tariff blobs are dropped, the same large nested structures _summarize_for_log hides.
+        """
+        attributes = {key: value for key, value in response.items() if key not in TARIFF_BLOB_KEYS}
+        attributes["friendly_name"] = "Powerwall Site Info"
+        attributes["state_class"] = None
+        self.dashboard_item(self.entity("site_info"), response.get("site_name") or "unknown", attributes, app="teslemetry")
+
     def publish_soc_max(self, kwh, estimate=False):
         """Publish the battery capacity (soc_max) in kWh, preferring a real device value over an estimate.
 
@@ -322,6 +340,7 @@ async def fetch_site_info(self):
         if not data:
             return False
         response = data.get("response", {})
+        self.publish_site_info(response)
         nameplate_wh = response.get("nameplate_energy", 0)
         battery_count = response.get("battery_count")
         if nameplate_wh:
@@ -634,6 +653,9 @@ async def automatic_config(self):
         max_site_meter_power_ac, so wiring them unconditionally would point Predbat at entities
         that never exist on a site missing those fields. Predbat falls back to its own defaults
         for absent args, so skipping the wiring here is safe.
+
+        Unlike the args above, inverter_hybrid is one of Predbat's OWN config switches rather than a
+        component entity, so it is written through set_state_external (see below).
         """
         self.log("Info: Teslemetry automatic configuration - wiring Predbat to the TESLA inverter type")
         self.set_arg("inverter_type", ["TESLA"])
@@ -664,6 +686,16 @@ async def automatic_config(self):
         self.set_arg("discharge_target_soc", [self.entity("schedule_discharge_soc", domain="number")])
         self.set_arg("scheduled_discharge_enable", [self.entity("schedule_discharge_enable", domain="switch")])
         self.set_arg("schedule_write_button", [self.entity("schedule_write", domain="switch")])
+        # Every Powerwall is an AC-coupled battery, so Predbat must not model it as a hybrid. Left at
+        # Predbat's default (on), get_total_inverted() folds PV into the inverter_limit budget, so the
+        # Powerwall's own AC rating is applied as a cap on battery + PV combined - modelling a
+        # separately inverted solar array as clipping against a limit it never passes through, which
+        # invents both the clipping and the export windows that "recover" it.
+        # set_state_external is the write path that updates the matching CONFIG_ITEMS value; a plain
+        # state write would move the entity without changing the setting Predbat plans with.
+        hybrid_entity = "switch.{}_inverter_hybrid".format(self.prefix)
+        self.log("Info: Teslemetry setting {} off - Tesla Powerwall batteries are AC coupled".format(hybrid_entity))
+        await self.set_state_external(hybrid_entity, False)
 
     async def schedule_event(self, entity_id, value):
         """Stage a schedule entity write into pending_schedule; the write switch commits it.

apps/predbat/tests/test_component_base.py

@@ -13,6 +13,7 @@
 """
 
 import asyncio
+from types import SimpleNamespace
 from datetime import timezone
 from unittest.mock import patch
 
@@ -405,6 +406,38 @@ def test_component_base_set_arg_auto(my_predbat):
     return False
 
 
+def test_component_base_set_state_external(my_predbat):
+    """
+    Test ComponentBase.set_state_external() forwards to the HA interface with the attributes intact.
+
+    Components use this (rather than set_state_wrapper) when auto-discovery has to change one of
+    Predbat's own settings - only this path updates the matching CONFIG_ITEMS value, so writing the
+    state alone would move the displayed entity without changing what the planner reads.
+    """
+    print("\n*** Test: ComponentBase.set_state_external forwards to the HA interface ***")
+
+    calls = []
+
+    async def capture(entity_id, state, attributes={}):
+        """Record a forwarded external state write."""
+        calls.append((entity_id, state, attributes))
+        return "written"
+
+    base = MockBase()
+    base.ha_interface = SimpleNamespace(set_state_external=capture)
+    component = TestComponent(base)
+
+    result = asyncio.run(component.set_state_external("switch.predbat_inverter_hybrid", False))
+    assert calls == [("switch.predbat_inverter_hybrid", False, {})], f"Unexpected forwarded call {calls}"
+    assert result == "written", "The HA interface's return value should be passed back to the caller"
+
+    asyncio.run(component.set_state_external("sensor.predbat_test", 42, {"unit_of_measurement": "W"}))
+    assert calls[1] == ("sensor.predbat_test", 42, {"unit_of_measurement": "W"}), f"Attributes not forwarded: {calls[1]}"
+
+    print("PASS: set_state_external forwards entity, state and attributes and returns the result")
+    return False
+
+
 def test_component_base_all(my_predbat):
     """Run all component_base tests"""
     tests = [
@@ -417,6 +450,7 @@ def test_component_base_all(my_predbat):
         ("run_timeout", test_component_base_run_timeout, "Hung run() triggers timeout, stack trace, and error count"),
         ("first_cleared_preset", test_component_base_first_cleared_when_run_presets_api_started, "first flag clears even when run() pre-sets api_started"),
         ("set_arg_auto", test_component_base_set_arg_auto, "set_arg_auto warns once on an apps.yaml override, silent otherwise"),
+        ("set_state_external", test_component_base_set_state_external, "set_state_external forwards to the HA interface"),
     ]
 
     failed = []

apps/predbat/tests/test_ge_cloud.py

@@ -72,7 +72,7 @@ class MockHAInterface:
             def __init__(self):
                 self.external_states = {}
 
-            async def set_state_external(self, entity_id, state):
+            async def set_state_external(self, entity_id, state, attributes={}):
                 self.external_states[entity_id] = state
 
         class MockBase: