Fix: Eigenverbrauch = PV_gesamt − Einspeisung statt nur Batterie-Entladung (v1.8.3)

Vollständige Formel: total_energy_total - grid_export_kwh deckt
Direktverbrauch (PV→Haus) + Batterie-Umweg (PV→Bat→Haus) ab.
Fallback auf bat_discharge_total wenn kein PV-Zähler verfügbar.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

haos-addon/config.yaml

@@ -1,5 +1,5 @@
 name: ShineBridge
-version: "1.8.2"
+version: "1.8.3"
 slug: shinebridge
 description: Growatt Wechselrichter lokal in Home Assistant — Modbus TCP via ShineLAN-X, MQTT Discovery, Web UI
 url: https://gitea.bitfire.work/retr0/shinebridge

haos-addon/src/main.py

@@ -408,7 +408,8 @@ def api_period_energy():
         pd_start_ts = datetime.datetime.combine(pd, datetime.time.min).timestamp()
 
         for agg_id in ("grid_import_kwh", "grid_export_kwh",
-                        "bat_discharge_total", "bat_charge_total"):
+                        "bat_discharge_total", "bat_charge_total",
+                        "total_energy_total"):
             cur = agg.get(agg_id)
             if cur is None:
                 continue
@@ -432,9 +433,16 @@ def api_period_energy():
         if "grid_export_kwh" in entry:
             entry["export_revenue"] = round(entry["grid_export_kwh"] * price_export, 2)
 
-        # Eigenverbrauch-Ersparnis: Batterie-Entladung (→ Haus + Auto) zu Importpreis
+        # Eigenverbrauch-Ersparnis: PV_gesamt − Einspeisung = alles was selbst verbraucht wurde
+        # (Direktverbrauch + Batterie-Umweg). Fällt PV nicht verfügbar: nur Batterie-Entladung.
+        pv_total = entry.get("total_energy_total")
+        grid_exp = entry.get("grid_export_kwh")
         bat_dch  = entry.get("bat_discharge_total")
-        if bat_dch is not None:
+        if pv_total is not None and grid_exp is not None:
+            savings = round(max(0.0, pv_total - grid_exp), 2)
+            entry["savings_kwh"] = savings
+            entry["savings_eur"] = round(savings * eff_price, 2)
+        elif bat_dch is not None:
             entry["savings_kwh"] = bat_dch
             entry["savings_eur"] = round(bat_dch * eff_price, 2)