diff --git a/myems-api/excelexporters/spaceefficiency.py b/myems-api/excelexporters/spaceefficiency.py
index 85e5e9a9..d66225e8 100644
--- a/myems-api/excelexporters/spaceefficiency.py
+++ b/myems-api/excelexporters/spaceefficiency.py
@@ -218,7 +218,7 @@ def generate_excel(report,
             ws[col + str(current_row_number)].alignment = c_c_alignment
             ws[col + str(current_row_number)].border = f_border
             ws[col + str(current_row_number)] = round(reporting_period_data['cumulations'][i], 2) \
-                if reporting_period_data['cumulations'][i] is not None else 0
+                if reporting_period_data['cumulations'][i] is not None else None
 
             col = chr(ord(col) + 1)
 
@@ -336,7 +336,7 @@ def generate_excel(report,
                 ws[col + str(current_row_number)].alignment = c_c_alignment
                 ws[col + str(current_row_number)].border = f_border
                 ws[col + str(current_row_number)] = round(reporting_period_data['values'][j][i], 2) \
-                    if reporting_period_data['values'][j][i] is not None else 0.00
+                    if reporting_period_data['values'][j][i] is not None else None
                 col = chr(ord(col) + 1)
 
             current_row_number += 1
@@ -355,7 +355,7 @@ def generate_excel(report,
             ws[col + str(current_row_number)].alignment = c_c_alignment
             ws[col + str(current_row_number)].border = f_border
             ws[col + str(current_row_number)] = round(reporting_period_data['cumulations'][i], 2) \
-                if reporting_period_data['cumulations'][i] is not None else 0.00
+                if reporting_period_data['cumulations'][i] is not None else None
             col = chr(ord(col) + 1)
 
         current_row_number += 2
diff --git a/web/src/components/MyEMS/Space/SpaceEfficiency.js b/web/src/components/MyEMS/Space/SpaceEfficiency.js
index 3c11de69..44da2c5e 100644
--- a/web/src/components/MyEMS/Space/SpaceEfficiency.js
+++ b/web/src/components/MyEMS/Space/SpaceEfficiency.js
@@ -304,9 +304,9 @@ const SpaceEfficiency = ({ setRedirect, setRedirectUrl, t }) => {
             detailed_value['startdatetime'] = currentTimestamp;
             json['reporting_period_efficiency']['values'].forEach((currentValue, energyCategoryIndex) => {
               if (json['reporting_period_efficiency']['values'][energyCategoryIndex][timestampIndex] != null) {
-                detailed_value['a' + 2 * energyCategoryIndex] = json['reporting_period_efficiency']['values'][energyCategoryIndex][timestampIndex].toFixed(2);
+                detailed_value['a' + energyCategoryIndex] = json['reporting_period_efficiency']['values'][energyCategoryIndex][timestampIndex].toFixed(2);
               } else {
-                detailed_value['a' + 2 * energyCategoryIndex] = '';
+                detailed_value['a' + energyCategoryIndex] = '';
               };
             });
             
@@ -318,7 +318,11 @@ const SpaceEfficiency = ({ setRedirect, setRedirectUrl, t }) => {
         detailed_value['id'] = detailed_value_list.length;
         detailed_value['startdatetime'] = t('Subtotal');
         json['reporting_period_efficiency']['cumulations'].forEach((currentValue, index) => {
-            detailed_value['a' + index] = currentValue.toFixed(2);
+            if (currentValue != null) {
+              detailed_value['a' + index] = currentValue.toFixed(2);
+            }else {
+              detailed_value['a' + index] = '';
+            }
           });
         detailed_value_list.push(detailed_value);
         setDetailedDataTableData(detailed_value_list);