diff --git a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
index a7b4d44e..125cea16 100644
--- a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
+++ b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
@@ -2149,6 +2149,8 @@ public class EstimateService {
     elm.text(StringUtils.defaultString(data.getObjectNameOmit()));
 
     sb = new StringBuilder();
+    BigDecimal totGrossWt = BigDecimal.ZERO;
+
     for (ItemResponse itemResponse : list) {
 
       String amountStr = StringUtils.defaultString(itemResponse.getAmount());
@@ -2163,6 +2165,9 @@ public class EstimateService {
         // grossWt가 0보다 큰지 체크
         if (grossWt.compareTo(BigDecimal.ZERO) > 0) {
           BigDecimal totalWeight = amount.multiply(grossWt);
+          totGrossWt = totGrossWt.add(totalWeight);
+          elm = doc.getElementById("totGrossWt");
+          elm.text(totGrossWt.toString());
 
           sb.append("<tr>");
           sb.append("<td style='width:120px;text-align:left;'>")
diff --git a/src/main/java/com/interplug/qcast/util/ExcelUtil.java b/src/main/java/com/interplug/qcast/util/ExcelUtil.java
index 90814168..a25288cb 100644
--- a/src/main/java/com/interplug/qcast/util/ExcelUtil.java
+++ b/src/main/java/com/interplug/qcast/util/ExcelUtil.java
@@ -26,22 +26,6 @@ public class ExcelUtil {
   // DecimalFormat 인스턴스를 미리 생성
   private static final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("#,##0.000");
 
-  /**
-   * 숫자 포맷팅을 위한 헬퍼 메서드
-   */
-  public static String formatNumber(Object amount, Object grossWt) {
-    try {
-      if (amount != null && grossWt != null) {
-        double amountValue = Double.parseDouble(amount.toString());
-        double grossWtValue = Double.parseDouble(grossWt.toString());
-        return DECIMAL_FORMAT.format(amountValue * grossWtValue);
-      }
-    } catch (NumberFormatException e) {
-      log.warn("Number formatting error: {}", e.getMessage());
-    }
-    return "0.000";
-  }
-
   /**
    * jxls을 이용한 엑셀데이터 축출
    *
@@ -127,6 +111,10 @@ public class ExcelUtil {
         context.putVar("data", map);
         context.putVar("list", list);
 
+        // 포맷팅 함수를 컨텍스트에 추가
+        context.putVar("formatNumber", new FormatNumberFunction());
+        context.putVar("decimalFormat", DECIMAL_FORMAT);
+
         JxlsHelper.getInstance().processTemplate(is, os, context);
       }
     } catch (Exception e) {
@@ -192,8 +180,49 @@ public class ExcelUtil {
    * JXLS 템플릿에서 사용할 수 있는 포맷팅 함수 클래스
    */
   public static class FormatNumberFunction {
+
+    /**
+     * 숫자 포맷팅을 위한 헬퍼 메서드
+     */
+    public static String formatNumber(Object amount, Object grossWt) {
+
+      try {
+        if (amount != null && grossWt != null) {
+          double amountValue = Double.parseDouble(amount.toString());
+          double grossWtValue = Double.parseDouble(grossWt.toString());
+          return DECIMAL_FORMAT.format(amountValue * grossWtValue);
+        }
+      } catch (NumberFormatException e) {
+        log.warn("Number formatting error: {}", e.getMessage());
+      }
+      return "0.000";
+    }
+
     public String format(Object amount, Object grossWt) {
       return formatNumber(amount, grossWt);
     }
+
+    // 합계 계산을 위한 숫자 값 반환 메서드
+    public Double calculate(Object amount, Object grossWt) {
+      try {
+        if (amount != null && grossWt != null) {
+          double amountValue = Double.parseDouble(amount.toString());
+          double grossWtValue = Double.parseDouble(grossWt.toString());
+          return amountValue * grossWtValue;
+        }
+      } catch (NumberFormatException e) {
+        log.warn("Number calculation error: {}", e.getMessage());
+      }
+      return 0.0;
+    }
+
+    // 리스트의 합계를 계산하고 포맷팅하는 메서드
+    public String formatSum(List<Map<String, Object>> items) {
+      double sum = 0.0;
+      for (Map<String, Object> item : items) {
+        sum += calculate(item.get("amount"), item.get("grossWt"));
+      }
+      return DECIMAL_FORMAT.format(sum);
+    }
   }
-}
+}
\ No newline at end of file
diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index ede876bc..87728112 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -286,7 +286,8 @@
             , PEI.DISP_CABLE_FLG
             , PEI.ITEM_TP_CD
             , I.PNOW_W
-            , II.GROSS_WT
+            , CASE WHEN II.GROSS_WT > 0 AND I.ITEM_GROUP IN ('CABLE_','MODULE_','STAND_') THEN II.GROSS_WT
+                ELSE 0 END AS GROSS_WT
             , CASE WHEN I.POWER_COM_FLG = '1' THEN 'PC_'
                    WHEN I.ITEM_GROUP = 'PC_' AND I.POWER_COM_FLG = '0' THEN 'STORAGE_BATTERY'
               ELSE I.ITEM_GROUP END AS ITEM_GROUP
diff --git a/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx b/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx
index c1e716a2..fb4ad026 100644
Binary files a/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx and b/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx differ
diff --git a/src/main/resources/template/pdf/pdf_download_quotation_detail_template.html b/src/main/resources/template/pdf/pdf_download_quotation_detail_template.html
index f71e6e9b..d96e776a 100644
--- a/src/main/resources/template/pdf/pdf_download_quotation_detail_template.html
+++ b/src/main/resources/template/pdf/pdf_download_quotation_detail_template.html
@@ -851,12 +851,12 @@
 
     <!-- 시스템 중량 정보 -->
 
-    <div style="text-align: center; font-size: 12px;">
-            <span>システム重量合計</span>
+    <div style="text-align: right; font-size: 11px;">
+            <span>システム重量合計: </span><span id="totGrossWt"></span> kg
         </div>
 
 
-    <div style="text-align: center; font-size: 10px; color: #666; margin-bottom: 20px;">
+    <div style="text-align: right; font-size: 10px; color: #666; margin-bottom: 20px;">
         ※システム重量は製品公差により変わる可能性があります。
     </div>