diff --git a/Energy_Pie/module.html b/Energy_Pie/module.html
index 50516e0..d57f92c 100644
--- a/Energy_Pie/module.html
+++ b/Energy_Pie/module.html
@@ -25,6 +25,7 @@
   <div style="margin-top:10px;display:flex;flex-direction:column;gap:8px;max-width:520px;">
     <div style="font-weight:600;">Werte</div>
     <div id="values" style="display:flex;flex-direction:column;gap:6px;"></div>
+    <div id="debug" style="margin-top:8px;font-size:12px;opacity:0.65;"></div>
   </div>
 </div>
 
@@ -36,6 +37,7 @@
   const elNext   = document.getElementById('next');
   const elValues = document.getElementById('values');
   const elPeriod = document.getElementById('period');
+  const elDebug = document.getElementById('debug');
 
   // Range ändern -> sofort rechnen
   elRange.addEventListener('change', () => requestAction('SetRange', elRange.value));
@@ -77,6 +79,23 @@
 
     // Nur die 4 gewünschten Werte anzeigen (fixe Reihenfolge)
     renderValues(data.values || {});
+
+    if (data.debug) {
+    const p = data.debug.prod || {};
+    const f = data.debug.feed || {};
+    const g = data.debug.grid || {};
+    elDebug.textContent =
+        `Prod(var=${p.varId}, arch=${p.archiveId}, count=${p.count}) | ` +
+        `Feed(var=${f.varId}, arch=${f.archiveId}, count=${f.count}) | ` +
+        `Grid(var=${g.varId}, arch=${g.archiveId}, count=${g.count})`;
+    } else {
+    elDebug.textContent = '';
+    }
+
+
+
+
+
   };
 
   function renderValues(values) {
diff --git a/Energy_Pie/module.php b/Energy_Pie/module.php
index 36cb3b7..786f93d 100644
--- a/Energy_Pie/module.php
+++ b/Energy_Pie/module.php
@@ -104,13 +104,17 @@ private function RecalculateAndPush(): void
     [$tStart, $tEnd] = $this->getRange($range, $date);
 
     // Debug-Container initialisieren (sonst "Undefined variable")
-    $dbgProd = null;
-    $dbgFeed = null;
-    $dbgGrid = null;
+    $dbgProd = [];
+    $dbgFeed = [];
+    $dbgGrid = [];
 
-    $prod = $this->readDelta($this->ReadPropertyInteger('VarProduction'), $tStart, $tEnd, $dbgProd);
-    $feed = $this->readDelta($this->ReadPropertyInteger('VarFeedIn'),     $tStart, $tEnd, $dbgFeed);
-    $grid = $this->readDelta($this->ReadPropertyInteger('VarGrid'),       $tStart, $tEnd, $dbgGrid);
+    $prodVar = $this->ReadPropertyInteger('VarProduction');
+    $feedVar = $this->ReadPropertyInteger('VarFeedIn');
+    $gridVar = $this->ReadPropertyInteger('VarGrid');
+
+    $prod = $this->readDelta($prodVar, $tStart, $tEnd, $dbgProd);
+    $feed = $this->readDelta($feedVar, $tStart, $tEnd, $dbgFeed);
+    $grid = $this->readDelta($gridVar, $tStart, $tEnd, $dbgGrid);
 
     $house = $prod - $feed + $grid;
     if ($house < 0) $house = 0.0;
@@ -183,11 +187,14 @@ private function RecalculateAndPush(): void
     }
 
 
-    private function readDelta(int $varId, int $tStart, int $tEnd, ?array &$dbg = null): float
+   private function readDelta(int $varId, int $tStart, int $tEnd, array &$dbg): float
     {
         $dbg = [
             'varId' => $varId,
+            'archiveId' => 0,
             'count' => 0,
+            'first' => null,
+            'last' => null,
             'vStart' => null,
             'vEnd' => null
         ];
@@ -197,6 +204,8 @@ private function RecalculateAndPush(): void
         }
 
         $archiveID = IPS_GetInstanceListByModuleID('{43192F0B-135B-4CE7-A0A7-1475603F3060}')[0] ?? 0;
+        $dbg['archiveId'] = $archiveID;
+
         if ($archiveID <= 0) {
             return 0.0;
         }
@@ -209,15 +218,15 @@ private function RecalculateAndPush(): void
         usort($values, static fn($a, $b) => (int)$a['TimeStamp'] <=> (int)$b['TimeStamp']);
         $dbg['count'] = count($values);
 
-        // Fallback: erster/letzter Eintrag im Fenster
-        $first = (float)$values[0]['Value'];
-        $last  = (float)$values[count($values)-1]['Value'];
+        $dbg['first'] = (float)$values[0]['Value'];
+        $dbg['last']  = (float)$values[count($values)-1]['Value'];
 
         $vStart = null;
         $vEnd   = null;
 
         foreach ($values as $v) {
             $ts = (int)$v['TimeStamp'];
+
             if ($ts <= $tStart) {
                 $vStart = (float)$v['Value'];
             }
@@ -229,9 +238,9 @@ private function RecalculateAndPush(): void
             }
         }
 
-        // Wenn kein Wert vor Start/Ende gefunden wurde -> nimm ersten/letzten Logwert
-        if ($vStart === null) $vStart = $first;
-        if ($vEnd === null)   $vEnd   = $last;
+        // Wenn kein Wert vor Start/Ende gefunden wurde, nimm ersten/letzten im Fenster
+        if ($vStart === null) $vStart = $dbg['first'];
+        if ($vEnd === null)   $vEnd   = $dbg['last'];
 
         $dbg['vStart'] = $vStart;
         $dbg['vEnd']   = $vEnd;
@@ -240,6 +249,7 @@ private function RecalculateAndPush(): void
         return ($diff < 0) ? 0.0 : (float)$diff;
     }
 
+
     /**
      * Buttons for quick navigation.
      */