diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index b41fa02f..2c3ba206 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -407,7 +407,6 @@
             SELECT
                 cie.CIRCUIT_NO, cie.OBJECT_NO, cie.PLAN_NO,
                 cie.ITEM_ID AS CIRCUIT_ITEM_ID, cie.CIRCUIT_CFG,
-                cie.CONN_VOL_W, -- 2026-06-30: 저장 시점 유닛별 접속용량(W). 있으면 위치기반 추정보다 우선 사용(동일 PCS 모델 다중 유닛 대응)
                 (SELECT SUM(CAST(LTRIM(RTRIM(x.X.value('.','VARCHAR(10)'))) AS INT))
                  FROM (SELECT CAST('<X>'+REPLACE(cie.CIRCUIT_CFG,',','</X><X>')+'</X>' AS XML) AS d) t
                      CROSS APPLY t.d.nodes('/X') AS x(X)
@@ -418,14 +417,11 @@
                      ),
                      CC AS (
                  SELECT cs.*,
-                     -- 2026-06-30: 누적 윈도우를 PCS(CIRCUIT_ITEM_ID) 내부로 한정 — 회로 위치가 다른 PCS 모듈까지 끌어오던 오배분 차단
                      ISNULL((SELECT SUM(c2.CIRCUIT_SUM) FROM CS c2
                      WHERE c2.OBJECT_NO=cs.OBJECT_NO AND c2.PLAN_NO=cs.PLAN_NO
-                     AND c2.CIRCUIT_ITEM_ID = cs.CIRCUIT_ITEM_ID
                      AND c2.CIRCUIT_NO < cs.CIRCUIT_NO), 0) AS CUM_START,
                      ISNULL((SELECT SUM(c2.CIRCUIT_SUM) FROM CS c2
                      WHERE c2.OBJECT_NO=cs.OBJECT_NO AND c2.PLAN_NO=cs.PLAN_NO
-                     AND c2.CIRCUIT_ITEM_ID = cs.CIRCUIT_ITEM_ID
                      AND c2.CIRCUIT_NO <= cs.CIRCUIT_NO), 0) AS CUM_END
                  FROM CS cs
                      ),
@@ -434,14 +430,11 @@
                      rie.ROOF_ITEM_NO, rie.ROOF_SURFACE_ID, rie.OBJECT_NO, rie.PLAN_NO,
                      rie.ITEM_ID AS ROOF_ITEM_ID, rie.ITEM_NAME,
                      CAST(rie.SPECIFICATION AS FLOAT) AS SPEC, rie.AMOUNT, rie.PC_ITEM_ID,
-                     -- 2026-06-30: 모듈 누적도 PCS(PC_ITEM_ID) 내부로 한정 — 실제 배선된 PCS의 모듈만 누적
                      ISNULL((SELECT SUM(r2.AMOUNT) FROM T_PART_ROOF_ITEM_ESTIMATE r2
                      WHERE r2.OBJECT_NO=rie.OBJECT_NO AND r2.PLAN_NO=rie.PLAN_NO
-                     AND r2.PC_ITEM_ID = rie.PC_ITEM_ID
                      AND r2.ROOF_ITEM_NO < rie.ROOF_ITEM_NO), 0) AS CUM_START,
                      ISNULL((SELECT SUM(r2.AMOUNT) FROM T_PART_ROOF_ITEM_ESTIMATE r2
                      WHERE r2.OBJECT_NO=rie.OBJECT_NO AND r2.PLAN_NO=rie.PLAN_NO
-                     AND r2.PC_ITEM_ID = rie.PC_ITEM_ID
                      AND r2.ROOF_ITEM_NO <= rie.ROOF_ITEM_NO), 0) AS CUM_END
                  FROM T_PART_ROOF_ITEM_ESTIMATE rie
                  WHERE rie.OBJECT_NO = #{objectNo} AND rie.PLAN_NO = #{planNo}
@@ -454,9 +447,7 @@
                      CASE WHEN cc.CUM_END < rc.CUM_END THEN cc.CUM_END ELSE rc.CUM_END END
                      - CASE WHEN cc.CUM_START > rc.CUM_START THEN cc.CUM_START ELSE rc.CUM_START END AS ALLOCATED_QTY
                  FROM CC cc
-                     -- 2026-06-30: 실제 배선(PCS) 일치 조건 추가 — 회로의 PCS 와 모듈이 배선된 PCS 가 같은 경우만 겹침
                      INNER JOIN RC rc ON cc.OBJECT_NO = rc.OBJECT_NO AND cc.PLAN_NO = rc.PLAN_NO
-                         AND cc.CIRCUIT_ITEM_ID = rc.PC_ITEM_ID
                  WHERE cc.CUM_START < rc.CUM_END AND cc.CUM_END > rc.CUM_START
                      ),
                      DETAIL AS (
@@ -466,28 +457,18 @@
                      ROUND(a.SPEC, 3) * a.ALLOCATED_QTY AS SPEC_X_QTY,
                      (SELECT mi.PNOW_W FROM M_ITEM mi WHERE mi.ITEM_ID = a.CIRCUIT_ITEM_ID) AS PNOW_W
                  FROM ALLOC a
-                     ),
-                     POS AS (
-                 -- 위치기반(폴백) 유닛별 접속용량 W 합 — CONN_VOL_W 가 없는 기존 데이터에만 사용
-                 SELECT CIRCUIT_NO, CIRCUIT_ITEM_ID, SUM(SPEC_X_QTY) AS POS_W
-                 FROM DETAIL
-                 GROUP BY CIRCUIT_NO, CIRCUIT_ITEM_ID
                      ),
                      CIRCUIT_AGG AS (
-                 -- 2026-06-30 option B: 저장된 CONN_VOL_W 우선, 없으면(NULL=기존 데이터) 위치기반 POS_W 폴백.
-                 -- CS(유닛 목록) 기준으로 LEFT JOIN 하므로 유닛별 1행 보장. 유닛별 MIN(접속용량, PNOW_W) 후 합산.
                  SELECT
-                     cs.CIRCUIT_NO, cs.CIRCUIT_ITEM_ID,
-                     COALESCE(cs.CONN_VOL_W, pos.POS_W, 0) AS CONN_W,
-                     (SELECT mi.PNOW_W FROM M_ITEM mi WHERE mi.ITEM_ID = cs.CIRCUIT_ITEM_ID) AS PNOW_W
-                 FROM CS cs
-                 LEFT JOIN POS pos
-                     ON pos.CIRCUIT_NO = cs.CIRCUIT_NO
-                     AND pos.CIRCUIT_ITEM_ID = cs.CIRCUIT_ITEM_ID
+                     CIRCUIT_NO, CIRCUIT_ITEM_ID, CIRCUIT_CFG, CIRCUIT_SUM,
+                     SUM(SPEC_X_QTY) AS SUM_SPEC_X_QTY, PNOW_W,
+                     CASE WHEN SUM(SPEC_X_QTY) <= PNOW_W THEN SUM(SPEC_X_QTY) ELSE PNOW_W END AS MIN_VALUE
+                 FROM DETAIL
+                 GROUP BY CIRCUIT_NO, CIRCUIT_ITEM_ID, CIRCUIT_CFG, CIRCUIT_SUM, PNOW_W
                      )
 
                 -- 2026-06-05: SQL 은 W 합만 DECIMAL 로 정확히 반환. kW 변환·3자리 절사(FLOOR)는 모듈용량(totVolKw)과 동일하게 Java BigDecimal 에서 수행 → FLOAT 나눗셈 잔여(5.6899999999999995 / 5.339) 원천 차단
-                SELECT CAST(SUM(CASE WHEN CONN_W <= PNOW_W THEN CONN_W ELSE PNOW_W END) AS DECIMAL(18,3))  AS CERT_VOL_W
+                SELECT CAST(SUM(MIN_VALUE) AS DECIMAL(18,3))  AS CERT_VOL_W
                 FROM CIRCUIT_AGG
 
         ]]>