diff --git a/Abrechnung/module.php b/Abrechnung/module.php
index e7aa366..215f45e 100644
--- a/Abrechnung/module.php
+++ b/Abrechnung/module.php
@@ -301,6 +301,49 @@ private function CalculatePowerCosts($powerMeters, $tariffs, $userId, $from, $to
     return ['html'=>$html, 'sum'=>$grand];
 }
 
+
+
+
+    // ====================== Nebenkosten ======================
+
+private function CalculateAdditionalCosts($waterMeters, $tariffs, $userId, $from, $to)
+{
+    $html = "<table border='1' cellspacing='0' cellpadding='3' width='100%' style='font-size:8px;'>
+    <tr style='background-color:#f0f0f0;'>
+        <th>Zähler</th><th>Typ</th><th>Start</th><th>Ende</th>
+        <th>Zähler Start</th><th>Zähler Ende</th><th>Verbrauch</th><th>Tarif (Rp)</th><th>Kosten (CHF)</th>
+    </tr>";
+
+    $total = 0.0;
+    $usedTariffs = [];
+
+    foreach ($waterMeters as $m) {
+        if ($m['user_id'] != $userId) continue;
+        $type = $m['meter_type'] ?? 'Warmwasser';
+        $cost = $this->AddMeterToPDFRow($m, $tariffs, $from, $to, $type);
+        $html .= $cost['row'];
+        $total += $cost['value'];
+        $usedTariffs = array_merge($usedTariffs, $cost['tariffs']);
+    }
+
+    $html .= "<tr style='background-color:#f9f9f9; font-weight:bold;'>
+        <td colspan='8' align='right'>Total Nebenkosten:</td>
+        <td align='right'>" . number_format($total, 2) . "</td>
+    </tr></table><br>";
+
+    // 👇 Tarifliste anhängen
+    if (!empty($usedTariffs)) {
+        $html .= "<p><strong>Angewendete Nebenkostentarife:</strong></p><ul>";
+        foreach ($usedTariffs as $t) {
+            $html .= "<li>" . date('d.m.Y', $t['start']) . " – " . date('d.m.Y', $t['end']) . ": " .
+                number_format($t['price'], 2) . " Rp</li>";
+        }
+        $html .= "</ul><br>";
+    }
+
+    return ['html' => $html, 'sum' => $total];
+}
+
     // ====================== Kernberechnung ======================
 
 private function AddMeterToPDFRow($meter, $tariffs, $from, $to, $type)