diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index 915915c3..1ac641cb 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -362,7 +362,12 @@
     <select id="selectEstimateRoofCertVolKw" parameterType="com.interplug.qcast.biz.estimate.dto.EstimateRequest" resultType="String">
         /* sqlid : com.interplug.qcast.biz.estimate.selectEstimateRoofCertVolKw */
         SELECT
-              FORMAT(ISNULL(SUM(CASE WHEN T.MODULE_VOL_KW <![CDATA[ <= ]]> T.PC_VOL_KW THEN T.MODULE_VOL_KW ELSE T.PC_VOL_KW END), 0), '#,##0.000') AS CERT_VOL_KW
+              -- FORMAT(ISNULL(SUM(CASE WHEN T.MODULE_VOL_KW <![CDATA[ <= ]]> T.PC_VOL_KW THEN T.MODULE_VOL_KW ELSE T.PC_VOL_KW END), 0), '#,##0.000') AS CERT_VOL_KW
+              REPLACE(CONVERT(VARCHAR, CAST(ISNULL(SUM(
+                CASE
+                WHEN T.MODULE_VOL_KW <![CDATA[ <= ]]> T.PC_VOL_KW THEN T.MODULE_VOL_KW
+                ELSE T.PC_VOL_KW
+                END), 0) AS NUMERIC(18, 3)), 1), ',', '') AS CERT_VOL_KW
         FROM
         (
             SELECT