diff --git a/Abrechnung/module.php b/Abrechnung/module.php
index bf1e829..5678267 100644
--- a/Abrechnung/module.php
+++ b/Abrechnung/module.php
@@ -227,28 +227,59 @@ public function GenerateInvoices()
         return floatval(GetValue($varId));
     }
 
-    private function AddMeterToPDFRow($meter, $tariffs, $from, $to, $type)
-    {
-        $start = $this->GetValueAt($meter['var_consumption'], $from);
-        $end   = $this->GetValueAt($meter['var_consumption'], $to);
-        if ($start === null || $end === null) return ['row' => '', 'value' => 0];
+private function AddMeterToPDFRow($meter, $tariffs, $from, $to, $type)
+{
+    $startVal = $this->GetValueAt($meter['var_consumption'], $from);
+    $endVal   = $this->GetValueAt($meter['var_consumption'], $to);
+    if ($startVal === null || $endVal === null) return ['row' => '', 'value' => 0];
 
-        $diff  = max(0, $end - $start);
-        $tariffRp = $this->GetTariff($tariffs, $type, $from, $to);
-        $cost  = ($tariffRp / 100) * $diff;
+    $totalDiff = max(0, $endVal - $startVal);
+    if ($totalDiff <= 0) return ['row' => '', 'value' => 0];
 
-        $row = "
-        <tr>
-            <td>{$meter['name']}</td>
-            <td>$type</td>
-            <td>$start</td>
-            <td>$end</td>
-            <td>$diff</td>
-            <td>$tariffRp</td>
-            <td>" . number_format($cost, 2) . "</td>
-        </tr>";
+    $rows = '';
+    $totalCost = 0.0;
 
-        return ['row' => $row, 'value' => $cost];
+    // Alle Tarife dieses Typs prüfen
+        foreach ($tariffs as $t) {
+            if (strtolower($t['unit_type']) != strtolower($type)) continue;
+
+            $tariffStart = strtotime($t['start']);
+            $tariffEnd   = strtotime($t['end']);
+
+            // Zeitliche Überschneidung mit Abrechnungszeitraum?
+            if ($tariffEnd < $from || $tariffStart > $to) continue;
+
+            // Überschneidung bestimmen
+            $sectionStart = max($from, $tariffStart);
+            $sectionEnd   = min($to, $tariffEnd);
+            $sectionDuration = $sectionEnd - $sectionStart;
+            $totalDuration   = $to - $from;
+
+            if ($sectionDuration <= 0) continue;
+
+            // Anteil des Gesamtverbrauchs nach Zeitanteil
+            $sectionFraction = $sectionDuration / $totalDuration;
+            $sectionDiff = $totalDiff * $sectionFraction;
+
+            $tariffRp = floatval($t['price']);
+            $costCHF  = ($tariffRp / 100) * $sectionDiff;
+
+            $rows .= "
+            <tr>
+                <td>{$meter['name']}</td>
+                <td>$type</td>
+                <td>" . date('d.m.Y', $sectionStart) . "</td>
+                <td>" . date('d.m.Y', $sectionEnd) . "</td>
+                <td>" . number_format($sectionDiff, 2) . "</td>
+                <td>" . number_format($tariffRp, 2) . "</td>
+                <td>" . number_format($costCHF, 2) . "</td>
+            </tr>";
+
+            $totalCost += $costCHF;
+        }
+
+        return ['row' => $rows, 'value' => $totalCost];
     }
 
+
 }
\ No newline at end of file