diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index 3cced394..ca0bbf23 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -367,37 +367,54 @@
     <select id="selectEstimateRoofCertVolKw" parameterType="com.interplug.qcast.biz.estimate.dto.EstimateRequest" resultType="String">
         /* sqlid : com.interplug.qcast.biz.estimate.selectEstimateRoofCertVolKw */
             <![CDATA[
-        SELECT
-            CAST(SUM(F.VOL_KW) AS NUMERIC(18, 3)) AS CERT_VOL_KW
+        SELECT SUM (
+                       CAST (ISNULL(
+                               CASE WHEN ISNULL(B.PQ_VOL, 0) = 0
+                                        THEN (CASE WHEN B.P_VOL < B.M_VOL THEN B.P_VOL ELSE B.M_VOL END)
+                                    ELSE (CASE WHEN B.PQ_VOL < B.M_VOL THEN B.PQ_VOL ELSE B.M_VOL END)
+                                   END, 0) AS NUMERIC(18, 3)))  AS CERT_VOL_KW
         FROM (
-                 SELECT
-                     T.*,
-                     ROUND((T.AMOUNT * CAST(ISNULL(T.M_SPEC, 0) AS FLOAT) / 1000), 4) AS MODULE_VOL_KW,
-                     ROUND((T.AMOUNT * CAST(ISNULL(T.P_SPEC, 0) AS FLOAT) / 1000), 4) AS PC_VOL_KW,
-                     CASE
-                         WHEN ROUND((T.AMOUNT * CAST(ISNULL(T.M_SPEC, 0) AS FLOAT) / 1000), 4)
-                             < ROUND((T.AMOUNT * CAST(ISNULL(T.P_SPEC, 0) AS FLOAT) / 1000), 4)
-                             THEN ROUND((T.AMOUNT * CAST(ISNULL(T.M_SPEC, 0) AS FLOAT) / 1000), 4)
-                         ELSE ROUND((T.AMOUNT * CAST(ISNULL(T.P_SPEC, 0) AS FLOAT) / 1000), 4)
-                         END AS VOL_KW
+                 SELECT DISTINCT
+                     A.P_ITEM_ID
+                               , (SELECT ROUND((TE.AMOUNT * CAST(ISNULL(TE.SPECIFICATION,0) AS FLOAT) / 1000), 4)
+                                  FROM T_PART_ESTIMATE TE (NOLOCK)
+                                  WHERE TE.OBJECT_NO = A.OBJECT_NO AND TE.PLAN_NO = A.PLAN_NO AND TE.ITEM_ID = A.P_ITEM_ID) AS P_VOL
+                               , TRI.QCAST_CUST_PRD_ID
+                               , (SELECT ROUND((TE.AMOUNT * CAST(ISNULL(TE.SPECIFICATION,0) AS FLOAT) / 1000), 4)
+                                  FROM T_PART_ESTIMATE TE (NOLOCK)
+                                  WHERE TE.OBJECT_NO = A.OBJECT_NO AND TE.PLAN_NO = A.PLAN_NO AND TE.ITEM_ID = TRI.QCAST_CUST_PRD_ID) AS PQ_VOL
+                               , TRI.ITEM_ID AS M_ITEM_ID
+                               , (SELECT ROUND((A.M_AMT * CAST(ISNULL(TE.SPECIFICATION,0) AS FLOAT) / 1000), 4)
+                                  FROM T_PART_ESTIMATE TE (NOLOCK)
+                                  WHERE TE.OBJECT_NO = A.OBJECT_NO AND TE.PLAN_NO = A.PLAN_NO AND TE.ITEM_ID = TRI.ITEM_ID) AS M_VOL
+                               , A.M_AMT
                  FROM (
-                          SELECT DISTINCT
-                              TPR.ITEM_ID,
-                              TPR.ITEM_NO,
-                              TPR.ITEM_NAME,
-                              TPR.SPECIFICATION AS M_SPEC,
-                              TPR.AMOUNT,
-                              TPC.ITEM_ID AS PC_ITEM_ID,
-                              (SELECT PNOW_W FROM M_ITEM WHERE ITEM_ID = TPC.ITEM_ID) AS P_SPEC,
-                              TPC.CIRCUIT_CFG
-                          FROM T_PART_CIRCUIT_ITEM_ESTIMATE TPC
-                                   INNER JOIN T_PART_ROOF_ITEM_ESTIMATE TPR
-                                              ON TPC.OBJECT_NO = TPR.OBJECT_NO
-                                                  AND TPC.PLAN_NO = TPR.PLAN_NO
-                          WHERE TPC.OBJECT_NO = #{objectNo}
-                            AND TPC.PLAN_NO = #{planNo}
-                      ) T
-             ) F
+                          SELECT
+                              TPC.OBJECT_NO
+                               , TPC.PLAN_NO
+                               , TPC.ITEM_ID AS P_ITEM_ID
+                               , TPC.CIRCUIT_CFG
+                               ,(
+                              SELECT SUM(CAST(T.Item AS INT))
+                              FROM (
+                                       SELECT CAST('<X>' + REPLACE(TPC.CIRCUIT_CFG, ',', '</X><X>') + '</X>' AS XML) AS XMLDATA
+                                   ) AS Sub
+                              CROSS APPLY (
+                              SELECT f.x.value('.', 'VARCHAR(MAX)') AS Item
+                              FROM Sub.XMLDATA.nodes('/X') AS f(x)
+                              ) AS T
+                          WHERE T.Item <> ''
+                      ) AS M_AMT
+                     FROM T_PART_CIRCUIT_ITEM_ESTIMATE TPC (NOLOCK)
+                 WHERE
+                     TPC.OBJECT_NO = #{objectNo}
+                   AND
+                     TPC.PLAN_NO = #{planNo}
+             )A
+                 LEFT OUTER JOIN T_PART_ROOF_ITEM_ESTIMATE TRI (NOLOCK)
+                                 ON A.OBJECT_NO = TRI.OBJECT_NO
+                                     AND A.PLAN_NO = TRI.PLAN_NO
+            )B
         ]]>
 
     </select>