diff --git a/infra/grafana/garage_decke.json b/infra/grafana/garage_decke.json
index 99fba0588..83a9ed900 100644
--- a/infra/grafana/garage_decke.json
+++ b/infra/grafana/garage_decke.json
@@ -9,7 +9,7 @@
   ],
   "timezone": "browser",
   "schemaVersion": 39,
-  "version": 7,
+  "version": 8,
   "refresh": "30s",
   "panels": [
     {
@@ -778,8 +778,8 @@
     {
       "id": 9,
       "type": "stat",
-      "title": "Leistung Brunnen",
-      "description": "Q ≈ Durchfluss [l/min] × ΔT [K] × 0,0698 → kW. Durchfluss oben einstellbar (typ. 3–4,5 l/min).",
+      "title": "Leistung Brunnen (Ziel >732 W)",
+      "description": "Q = l/min × ΔT × 0,0698 kW. Referenz/Ziel: 732 W (3,5 l/min × 3,0 K). Grün ab 0,732 kW.",
       "gridPos": {
         "h": 4,
         "w": 6,
@@ -802,20 +802,20 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "blue",
+                "color": "red",
                 "value": null
               },
               {
-                "color": "green",
+                "color": "orange",
                 "value": 0.5
               },
               {
                 "color": "yellow",
-                "value": 2
+                "value": 0.65
               },
               {
-                "color": "orange",
-                "value": 4
+                "color": "green",
+                "value": 0.732
               }
             ]
           }
@@ -1049,6 +1049,22 @@
                   "mode": "fixed",
                   "fixedColor": "purple"
                 }
+              },
+              {
+                "id": "thresholds",
+                "value": {
+                  "mode": "absolute",
+                  "steps": [
+                    {
+                      "color": "red",
+                      "value": null
+                    },
+                    {
+                      "color": "green",
+                      "value": 0.732
+                    }
+                  ]
+                }
               }
             ]
           }