diff --git a/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimController.java b/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimController.java
index 8015e0a5..4b32092c 100644
--- a/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimController.java
+++ b/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimController.java
@@ -1,17 +1,17 @@
 package com.interplug.qcast.biz.pwrGnrSimulation;
 
+import com.interplug.qcast.biz.estimate.dto.EstimateRequest;
 import com.interplug.qcast.biz.pwrGnrSimulation.dto.PwrGnrSimGuideResponse;
 import com.interplug.qcast.biz.pwrGnrSimulation.dto.PwrGnrSimRequest;
 import com.interplug.qcast.biz.pwrGnrSimulation.dto.PwrGnrSimResponse;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.ResponseStatus;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 @Slf4j
 @RestController
@@ -36,4 +36,15 @@ public class PwrGnrSimController {
   public PwrGnrSimGuideResponse selectPwrGnrSimulationGuideInfo() throws Exception {
     return pwrGnrSimService.selectPwrGnrSimulationGuideInfo();
   }
+
+  @Operation(description = "견적서를 엑셀로 다운로드한다.")
+  @PostMapping("/excel-download")
+  @ResponseStatus(HttpStatus.OK)
+  public void excelDownload(
+      HttpServletRequest request,
+      HttpServletResponse response,
+      @RequestBody EstimateRequest estimateRequest)
+      throws Exception {
+    pwrGnrSimService.excelDownload(request, response, estimateRequest);
+  }
 }
diff --git a/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimService.java b/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimService.java
index 48e3e567..23f89998 100644
--- a/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimService.java
+++ b/src/main/java/com/interplug/qcast/biz/pwrGnrSimulation/PwrGnrSimService.java
@@ -2,23 +2,28 @@ package com.interplug.qcast.biz.pwrGnrSimulation;
 
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.interplug.qcast.biz.estimate.dto.*;
 import com.interplug.qcast.biz.pwrGnrSimulation.dto.*;
 import com.interplug.qcast.config.Exception.ErrorCode;
 import com.interplug.qcast.config.Exception.QcastException;
+import com.interplug.qcast.config.message.Messages;
+import com.interplug.qcast.util.ExcelUtil;
 import com.interplug.qcast.util.InterfaceQsp;
+import com.interplug.qcast.util.PdfUtil;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
 import java.io.*;
 import java.nio.charset.StandardCharsets;
 import java.text.DecimalFormat;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Comparator;
-import java.util.List;
+import java.text.SimpleDateFormat;
+import java.util.*;
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpMethod;
 import org.springframework.stereotype.Service;
@@ -29,6 +34,8 @@ import org.springframework.stereotype.Service;
 public class PwrGnrSimService {
   private final InterfaceQsp interfaceQsp;
 
+  @Autowired Messages message;
+
   @Value("${qsp.url}")
   private String qspUrl;
 
@@ -1484,4 +1491,105 @@ public class PwrGnrSimService {
 
     return (int) Math.ceil(value / place) * place;
   }
+
+  public void excelDownload(
+      HttpServletRequest request, HttpServletResponse response, EstimateRequest estimateRequest)
+      throws Exception {
+
+    // Validation
+    if (StringUtils.isEmpty(estimateRequest.getObjectNo())) {
+      throw new QcastException(
+          ErrorCode.INVALID_INPUT_VALUE,
+          message.getMessage("common.message.required.data", "Object No"));
+    }
+    if (StringUtils.isEmpty(estimateRequest.getPlanNo())) {
+      throw new QcastException(
+          ErrorCode.INVALID_INPUT_VALUE,
+          message.getMessage("common.message.required.data", "Plan No"));
+    }
+
+    try {
+
+      EstimateResponse estimateResponse = new EstimateResponse();
+      estimateResponse.setObjectNo(estimateRequest.getObjectNo());
+      estimateResponse.setPlanNo(estimateRequest.getPlanNo());
+
+      // file Name 명이 없는경우
+      if (estimateRequest.getFileName() == null || "".equals(estimateRequest.getFileName())) {
+        estimateRequest.setFileName(
+            estimateResponse.getObjectNo()
+                + "_"
+                + new SimpleDateFormat("yyyyMMdd").format(new Date()));
+      }
+
+      // 발전시뮬레이션 계산
+      PwrGnrSimRequest pwrGnrSimRequest = new PwrGnrSimRequest();
+      pwrGnrSimRequest.setObjectNo(estimateResponse.getObjectNo());
+      pwrGnrSimRequest.setPlanNo(estimateResponse.getPlanNo());
+
+      PwrGnrSimResponse pwrGnrSimResponse = this.selectPwrGnrSimulation(pwrGnrSimRequest);
+      pwrGnrSimResponse.setPwrGnrSimType(estimateRequest.getPwrGnrSimType());
+
+      // 발전시뮬레이션 타입에 따른 list 셋팅
+      if ("A".equals(estimateRequest.getPwrGnrSimType())) {
+        pwrGnrSimResponse.setFrcPwrGnrList(pwrGnrSimResponse.getHatsudenryouAll());
+      } else if ("B".equals(estimateRequest.getPwrGnrSimType())) {
+        pwrGnrSimResponse.setFrcPwrGnrList(pwrGnrSimResponse.getHatsudenryouAllSnow());
+      } else if ("C".equals(estimateRequest.getPwrGnrSimType())) {
+        pwrGnrSimResponse.setFrcPwrGnrList(pwrGnrSimResponse.getHatsudenryouPeakcutAll());
+      } else if ("D".equals(estimateRequest.getPwrGnrSimType())) {
+        pwrGnrSimResponse.setFrcPwrGnrList(pwrGnrSimResponse.getHatsudenryouPeakcutAllSnow());
+      }
+
+      pwrGnrSimResponse.setIntFrcPwrGnrList(
+          Arrays.stream(pwrGnrSimResponse.getFrcPwrGnrList())
+              .map(s -> s.replace(",", "")) // , 제거
+              .mapToInt(Integer::parseInt) // 문자열을 int로 변환
+              .toArray());
+
+      if (pwrGnrSimResponse != null) {
+        try {
+          // 발전시뮬레이션 안내사항 조회
+          PwrGnrSimGuideResponse pwrGnrSimGuideInfo = this.selectPwrGnrSimulationGuideInfo();
+          if (pwrGnrSimGuideInfo != null) {
+            pwrGnrSimResponse.setGuideInfo(pwrGnrSimGuideInfo.getData());
+          }
+        } catch (Exception e) {
+        }
+      }
+
+      estimateResponse.setPwrGnrSim(pwrGnrSimResponse);
+
+      if ("PDF".equals(estimateRequest.getSchDownload())) { // PDF 다운로드
+        String[] arrSection = {"div.section3"};
+        String templateFilePath = "pdf_download_simulation_detail_template.html";
+
+        // 템플릿 html 조회
+        Document doc = PdfUtil.getPdfDoc(request, templateFilePath);
+
+        // 발전시뮬레이션 pdf Html 생성
+        doc = this.pwrGnrSimPdfHtml(doc, pwrGnrSimResponse);
+
+        // pdf 다운로드
+        PdfUtil.pdfDownload(request, response, doc, estimateRequest.getFileName(), null, true);
+
+      } else {
+
+        String excelTemplateName = "excel_download_simulation_detail_template.xlsx";
+
+        ExcelUtil excelUtil = new ExcelUtil();
+        excelUtil.download(
+            request,
+            response,
+            excelUtil.convertVoToMap(estimateResponse),
+            null,
+            estimateRequest.getFileName(),
+            excelTemplateName);
+      }
+
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw new QcastException(ErrorCode.INTERNAL_SERVER_ERROR);
+    }
+  }
 }
diff --git a/src/main/java/com/interplug/qcast/util/PdfUtil.java b/src/main/java/com/interplug/qcast/util/PdfUtil.java
index 22ae5735..da65672a 100644
--- a/src/main/java/com/interplug/qcast/util/PdfUtil.java
+++ b/src/main/java/com/interplug/qcast/util/PdfUtil.java
@@ -3,6 +3,7 @@ package com.interplug.qcast.util;
 import com.itextpdf.html2pdf.ConverterProperties;
 import com.itextpdf.html2pdf.HtmlConverter;
 import com.itextpdf.html2pdf.resolver.font.DefaultFontProvider;
+import com.itextpdf.kernel.geom.PageSize;
 import com.itextpdf.kernel.pdf.PdfDocument;
 import com.itextpdf.kernel.pdf.PdfReader;
 import com.itextpdf.kernel.pdf.PdfWriter;
@@ -60,6 +61,7 @@ public class PdfUtil {
    * @param doc
    * @param pdfFileName 파일명
    * @param arrSection 노출 Section
+   * @param isLandscape 가로/세로 설정
    * @throws IOException
    */
   public static void pdfDownload(
@@ -67,9 +69,13 @@ public class PdfUtil {
       HttpServletResponse response,
       Document doc,
       String pdfFileName,
-      String[] arrSection)
+      String[] arrSection,
+      boolean isLandscape)
       throws IOException {
 
+    // 가로 세로 설정
+    PageSize pageSize = isLandscape ? PageSize.A4.rotate() : PageSize.A4;
+
     // 응답에 PDF 설정
     response.setContentType("application/pdf");
     response.setHeader("Content-Disposition", "attachment; filename=\"" + pdfFileName + "\".pdf");
@@ -79,6 +85,8 @@ public class PdfUtil {
         PdfWriter writer = new PdfWriter(os);
         PdfDocument pdfDoc = new PdfDocument(writer)) {
 
+      pdfDoc.setDefaultPageSize(pageSize);
+
       // 폰트 설정
       ConverterProperties properties = new ConverterProperties();
       String fontPath = "template/pdf/BIZUDPGothic-Regular.ttf";
@@ -88,7 +96,9 @@ public class PdfUtil {
       if (arrSection == null || arrSection.length == 0) {
         // HTML 전체를 pdfDoc에 직접 변환
         HtmlConverter.convertToPdf(
-            new ByteArrayInputStream(doc.html().getBytes(StandardCharsets.UTF_8)), os, properties);
+            new ByteArrayInputStream(doc.html().getBytes(StandardCharsets.UTF_8)),
+            pdfDoc,
+            properties);
         os.flush();
       } else {
         // arrSection이 있는 경우 각 섹션을 개별적으로 변환 후 병합
@@ -108,6 +118,8 @@ public class PdfUtil {
                     PdfWriter tempWriter = new PdfWriter(tempOutputStream);
                     PdfDocument tempPdfDoc = new PdfDocument(tempWriter)) {
 
+                  tempPdfDoc.setDefaultPageSize(pageSize);
+
                   HtmlConverter.convertToPdf(
                       new ByteArrayInputStream(sectionHtml.getBytes(StandardCharsets.UTF_8)),
                       tempPdfDoc,
@@ -161,4 +173,15 @@ public class PdfUtil {
     }
     return fontProvider;
   }
+
+  public static void pdfDownload(
+      HttpServletRequest request,
+      HttpServletResponse response,
+      Document doc,
+      String pdfFileName,
+      String[] arrSection)
+      throws IOException {
+
+    pdfDownload(request, response, doc, pdfFileName, arrSection, false); // 기본값은 세로
+  }
 }
diff --git a/src/main/resources/template/excel/excel_download_simulation_detail_template.xlsx b/src/main/resources/template/excel/excel_download_simulation_detail_template.xlsx
new file mode 100644
index 00000000..bd924070
Binary files /dev/null and b/src/main/resources/template/excel/excel_download_simulation_detail_template.xlsx differ
diff --git a/src/main/resources/template/pdf/pdf_download_simulation_detail_template.html b/src/main/resources/template/pdf/pdf_download_simulation_detail_template.html
new file mode 100644
index 00000000..ba5e6fcd
--- /dev/null
+++ b/src/main/resources/template/pdf/pdf_download_simulation_detail_template.html
@@ -0,0 +1,494 @@
+<!doctype html>
+<html lang="ja">
+<head>
+    <style>
+        @media print {
+            body {
+                print-color-adjust: exact;
+                -webkit-print-color-adjust: exact;
+            }
+        }
+
+        table {
+            width: 100%;
+            table-layout: fixed;
+            font-family: M-Gothic;
+            font-size: 11px;
+            border-collapse: collapse;
+            margin: 0 auto;
+            line-height: 150%;
+            color: #333
+        }
+
+        .month-table td {
+            word-break: break-all;
+        }
+
+        th, td {
+            padding: 5px 5px 3px;
+            text-align: center;
+            font-size: 10px;
+            border: 1px solid #000
+        }
+
+        th {
+            background-color: #eee;
+            font-weight: bold
+        }
+
+        td {
+            background-color: white
+        }
+
+        .col-20 {
+            width: 20%
+        }
+
+        .col-15 {
+            width: 15%
+        }
+
+        .col-10 {
+            width: 10%
+        }
+
+        body {
+            max-width: 1040px;
+            margin: 0 auto
+        }
+
+        .mb20 {
+            margin-bottom: 20px
+        }
+
+        .al-l {
+            text-align: left !important
+        }
+
+        .al-r {
+            text-align: right !important
+        }
+
+        /* 가이드박스 */
+        .guide-box {
+            border: 1px solid #000;
+            padding: 15px;
+        }
+
+        .guide-content {
+            white-space: pre-line;
+            line-height: 1.4;
+            font-size: 12px;
+            margin: 0;
+        }
+
+        /* 차트퍼블 */
+        .chart-wrapper {
+            width: 100%;
+            table-layout: fixed;
+            margin: 20px 0;
+            height: 324.3px;
+        }
+
+        .chart-wrapper td {
+            padding: 0;
+            border: none
+        }
+
+        .chart-wrapper td.y-axis-wrap {
+            vertical-align: bottom
+        }
+
+        .y-axis {
+            margin-top: -5px
+        }
+
+        .y-axis td {
+            font-size: 12px;
+            line-height: 1;
+            vertical-align: bottom;
+            padding: 12.3px 0
+        }
+
+        .y-axis td.zero {
+            padding-bottom: 0
+        }
+
+        .y-axis td.top {
+            padding-top: 0
+        }
+
+        .chart-wrapper td.bar-cell {
+            position: relative;
+            vertical-align: bottom;
+            border-bottom: 1px solid #ddd;
+            background-color: transparent
+        }
+
+        .chart-wrapper td.bar-cell .bar {
+            position: absolute;
+            bottom: 0;
+            left: 13.4px;
+            width: 18px;
+            margin: 0 auto
+        }
+
+        .chart-wrapper td.month-cell {
+            font-size: 11px;
+            padding-top: 7px
+        }
+
+        .chart-line td {
+            background-color: transparent;
+            padding: 18.2px 0;
+            border-bottom: 1px solid #ddd !important
+        }
+
+        .chart-line td.top {
+            padding: 1px
+        }
+
+        /* 타이틀 */
+        .title {
+            text-align: center;
+            font-size: 40px;
+            letter-spacing: 10px;
+            font-weight: bold;
+            margin: 10px 0 30px;
+            border-top: 1px solid #000;
+            border-bottom: 1px solid #000;
+        }
+
+        /* 비고퍼블 */
+        .note th, .note td {
+            padding: 10px
+        }
+
+        /* 총액퍼블 */
+        .all-price-wrap {
+            text-align: center;
+            margin-bottom: 50px;
+        }
+
+        .all-price {
+            display: inline-block;
+            text-align: center;
+            border-bottom: 1px solid #000;
+        }
+
+        .all-price span {
+            display: inline-block;
+            font-size: 18px;
+            font-weight: bold;
+        }
+
+        .all-price-value {
+            width: 300px;
+            display: inline-block;
+            text-align: right;
+        }
+
+        /* 태양전지 */
+        .sun-volt {
+            display: inline-block;
+            margin-bottom: 30px;
+            border-bottom: 1px solid #000;
+        }
+
+        .sun-volt span {
+            display: inline-block;
+            font-size: 15px;
+            font-weight: bold;
+        }
+
+        .sun-volt-value {
+            width: 130px;
+            display: inline-block;
+            text-align: right;
+            font-size: 15px;
+        }
+
+        .price-table td.end {
+            background-color: #eee;
+            font-weight: bold;
+        }
+
+        .product-info-wrap {
+            table-layout: fixed;
+            margin-bottom: 25px;
+        }
+
+        .product-info-wrap td {
+            border: none;
+            padding: 0;
+            text-align: left;
+            vertical-align: top;
+        }
+
+        /* 견적서 정의 */
+        .estimate-wrap {
+            display: inline-block;
+            vertical-align: top;
+        }
+
+        .estimate-info {
+            display: inline-block;
+            margin-bottom: 40px;
+            border-bottom: 1px solid #000;
+        }
+
+        .estimate-info span {
+            font-size: 13px;
+            font-weight: bold;
+        }
+
+        .estimate-info-name {
+            padding-right: 20px;
+        }
+
+        /* tit-form */
+        .estimate-tit-form {
+            display: block;
+            margin-bottom: 30px;
+        }
+
+        .estimate-tit-form span {
+            font-size: 13px;
+            border-bottom: 1px solid #000;
+        }
+
+        .estimate-tit-form .estimate-tit {
+            display: inline-block;
+            width: 82px;
+            font-size: 12px;
+            font-weight: bold;
+            border: none;
+            text-align: right;
+        }
+
+        /* 물품 */
+        .product-wrap > div {
+            margin-bottom: 10px;
+        }
+
+        .product-num {
+            display: inline-block;
+            margin-right: 20px;
+        }
+
+        .product-count {
+            display: inline-block;;
+        }
+
+        .product-count .tit, .product-num .tit {
+            display: inline-block;
+            font-size: 12px;
+            font-weight: bold;
+        }
+
+        .product-count span, .product-num span {
+            display: inline-block;
+            font-size: 13px;
+        }
+
+        .product-form {
+            display: block;
+        }
+
+        .product-form .tit {
+            display: inline-block;
+            width: 62px;
+            font-size: 12px;
+            font-weight: bold;
+            border: none;
+            text-align: right;
+        }
+
+        .product-form span {
+            display: inline-block;
+            font-size: 13px;
+        }
+
+        .store-info-tit {
+            font-size: 13px;
+            font-weight: bold;
+            display: block;
+            margin-bottom: 10px;
+        }
+
+        .product-info-wrap .store-info {
+            display: block;
+            margin-bottom: 25px;
+        }
+
+        .store-info span {
+            display: block;
+            font-size: 12px;
+            margin-bottom: 0px;
+        }
+
+        .store-info .number {
+            display: block;
+            font-size: 13px;
+        }
+
+        .store-info .number span {
+            display: inline-block;
+        }
+
+        .approval-table {
+            width: 200px;
+            margin: 0 0 0 auto;
+        }
+
+        .approval-table th {
+            background-color: transparent;
+        }
+
+        .approval-table td {
+            padding: 30px 0;
+            border: 1px solid #000;
+        }
+
+        .chart-wrap {
+            overflow: hidden;
+        }
+
+        .left-side {
+            margin-right: 20px;
+            width: 550px;
+            float: left;
+        }
+
+        .right-side {
+            width: 450px;
+            float: right;
+        }
+
+        .tit {
+            font-size: 14px;
+            margin-bottom: 10px;
+        }
+    </style>
+</head>
+<body>
+<div class="section3">
+    <table class="mb20">
+        <tbody>
+        <tr>
+            <th class="col-10">物件番号</th>
+            <td id="objectNo"></td>
+            <th class="col-10">作成日</th>
+            <td id="drawingEstimateCreateDate"></td>
+            <th class="col-10">都道府県</th>
+            <td id="prefName"></td>
+            <th class="col-10">日射量観測地点</th>
+            <td id="areaName"></td>
+        </tr>
+        <tr>
+            <th class="col-10">システム容量</th>
+            <td id="capacity"></td>
+            <th class="col-10">年間予測発電量</th>
+            <td id="anlFrcsGnrt"></td>
+            <th class="col-10">積雪条件</th>
+            <td id="snowfall"></td>
+            <th class="col-10">風速条件</th>
+            <td id="standardWindSpeedId"></td>
+        </tr>
+        </tbody>
+    </table>
+    <div class="chart-wrap">
+        <div class="left-side">
+            <div id="pwrGnrChartImg">
+                <table class="chart-wrapper">
+                    <tbody>
+                    <tr id="htmlX">
+                        <td class="y-axis-wrap">
+                            <table class="y-axis">
+                                <tbody id="htmlY">
+                                </tbody>
+                            </table>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td class="month-cell"></td>
+                        <td class="month-cell">1月</td>
+                        <td class="month-cell">2月</td>
+                        <td class="month-cell">3月</td>
+                        <td class="month-cell">4月</td>
+                        <td class="month-cell">5月</td>
+                        <td class="month-cell">6月</td>
+                        <td class="month-cell">7月</td>
+                        <td class="month-cell">8月</td>
+                        <td class="month-cell">9月</td>
+                        <td class="month-cell">10月</td>
+                        <td class="month-cell">11月</td>
+                        <td class="month-cell">12月</td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+
+            <div class="tit">
+                ● 予測発電量［kWh］
+            </div>
+            <table class="mb20 month-table">
+                <thead>
+                <tr>
+                    <th>1月</th>
+                    <th>2月</th>
+                    <th>3月</th>
+                    <th>4月</th>
+                    <th>5月</th>
+                    <th>6月</th>
+                    <th>7月</th>
+                    <th>8月</th>
+                    <th>9月</th>
+                    <th>10月</th>
+                    <th>11月</th>
+                    <th>12月</th>
+                    <th>合計</th>
+                </tr>
+                </thead>
+                <tbody>
+                <tr id="frcPwrGnrList_detail">
+                </tr>
+                </tbody>
+            </table>
+        </div>
+
+        <div class="right-side">
+            <table class="mb20">
+                <thead>
+                <tr>
+                    <th class="col-15">屋根面</th>
+                    <th class="col-15">傾斜角度</th>
+                    <th class="col-15">方位角(度)</th>
+                    <th>太陽電池モジュール</th>
+                    <th class="col-15">枚数(枚)</th>
+                </tr>
+                </thead>
+                <tbody id="roofModuleList_detail">
+                </tbody>
+            </table>
+            <table class="mb20">
+                <thead>
+                <tr>
+                    <th>パワーコンディショナー</th>
+                    <th class="col-20">台</th>
+                </tr>
+                </thead>
+                <tbody id="pcsList_detail">
+                </tbody>
+            </table>
+        </div>
+    </div>
+    <div class="tit">
+        ● Hanwha Japan 年間発電量シミュレーション案内事項
+    </div>
+    <div class="guide-box">
+        <pre class="guide-content" id="guideInfo"></pre>
+    </div>
+</div>
+</body>
+</html>
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