diff --git a/src/components/simulator/Simulator.jsx b/src/components/simulator/Simulator.jsx
index 5d6a7e3d..9831d1b3 100644
--- a/src/components/simulator/Simulator.jsx
+++ b/src/components/simulator/Simulator.jsx
@@ -270,9 +270,9 @@ export default function Simulator() {
                         setPwrGnrSimType(e.target.value)
                       }}
                     >
-                      <option value={`A`}>積雪考慮なし(ピークカットなし発電量)</option>
+                      {/*<option value={`A`}>積雪考慮なし(ピークカットなし発電量)</option>*/}
                       <option value={`B`}>積雪考慮なし(ピークカットあり発電量)</option>
-                      <option value={`C`}>積雪考慮あり(ピークカットなし発電量)</option>
+                      {/*<option value={`C`}>積雪考慮あり(ピークカットなし発電量)</option>*/}
                       <option value={`D`}>積雪考慮あり(ピークカットあり発電量)</option>
                     </select>
                   </div>
diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 73fb92f8..0f8c04d3 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -743,7 +743,19 @@ export const useTrestle = () => {
     if (!data || data.length === 0) {
       return
     }
-    itemList = data
+    //itemList = data
+// itemList에 northModuleYn 추가
+    itemList = data.map(item => {
+      if (item.itemTpCd === "MODULE") {
+        const matchedModule = modules.find(module => module.moduleItemId === item.itemId);
+        return {
+          ...item,
+          northModuleYn: matchedModule?.northModuleYn || 'N'
+        };
+      }
+      return item;
+    });
+
 
     //northArrangement 북면 설치 여부
     const northArrangement = getNorthArrangement()
@@ -2586,6 +2598,7 @@ export const useTrestle = () => {
       return {
         moduleTpCd: module.moduleInfo.itemTp,
         moduleItemId: module.moduleInfo.itemId,
+        northModuleYn: module?.moduleInfo?.northModuleYn || 'N'  // 기본값 'N'
       }
     })
 
@@ -2597,6 +2610,7 @@ export const useTrestle = () => {
           moduleTpCd: cur.moduleTpCd,
           moduleItemId: cur.moduleItemId,
           cnt: 0,
+          northModuleYn: cur.northModuleYn
         }
       }
       acc[key].cnt++
@@ -2609,6 +2623,11 @@ export const useTrestle = () => {
         moduleTpCd: groupedParam.moduleTpCd,
         moduleItemId: groupedParam.moduleItemId,
         moduleCnt: groupedParam.cnt,
+        northModuleYn: groupedParam.northModuleYn
+        // northModuleYn: params.find(p =>
+        //   p.moduleTpCd === groupedParam.moduleTpCd &&
+        //   p.moduleItemId === groupedParam.moduleItemId
+        // )?.northModuleYn || 'N'
       }
     })
   }
diff --git a/src/hooks/useMode.js b/src/hooks/useMode.js
index 6030f43f..8eebe849 100644
--- a/src/hooks/useMode.js
+++ b/src/hooks/useMode.js
@@ -1809,6 +1809,7 @@ export function useMode() {
         const currentWall = line.currentWall
         const nextWall = line.nextWall
         const index = line.index + addPoint
+        const direction = currentWall.direction
         const xDiff = Big(currentWall.x1).minus(Big(nextWall.x1))
         const yDiff = Big(currentWall.y1).minus(Big(nextWall.y1))
         const offsetCurrentPoint = offsetPolygon[index]
@@ -1820,12 +1821,10 @@ export function useMode() {
             x: xDiff.eq(0) ? offsetCurrentPoint.x : nextWall.x1,
             y: yDiff.eq(0) ? offsetCurrentPoint.y : nextWall.y1,
           }
-          let diffOffset
-          if (nextWall.index > currentWall.index) {
-            diffOffset = Big(nextWall.attributes.offset).minus(Big(currentWall.attributes.offset)).abs()
-          } else {
-            diffOffset = Big(currentWall.attributes.offset).minus(Big(nextWall.attributes.offset))
-          }
+
+          let diffOffset = ['top', 'right'].includes(direction)
+            ? Big(nextWall.attributes.offset).minus(Big(currentWall.attributes.offset))
+            : Big(currentWall.attributes.offset).minus(Big(nextWall.attributes.offset))
 
           const offsetPoint2 = {
             x: yDiff.eq(0) ? offsetPoint1.x : Big(offsetPoint1.x).plus(diffOffset).toNumber(),