diff --git a/html/PTree.html b/html/PTree.html
index 41e6659..12576c8 100644
--- a/html/PTree.html
+++ b/html/PTree.html
@@ -71,13 +71,19 @@
           <td class="totalcell totalpower max">0</td>
           <td class="totalcell">W</td>
         </tr>
+        <tr>
+          <td class="totalcell">Total Loss</td>
+          <td class="totalcell totalloss typ">0</td>
+          <td class="totalcell totalloss max">0</td>
+          <td class="totalcell">W</td>
+        </tr>
         <tr>
           <td class="totalcell">Efficiency</td>
           <td class="totalcell totaleff typ">100</td>
           <td class="totalcell totaleff max">100</td>
           <td class="totalcell">%</td>
         </tr>
-        <tr>
+        <!--<tr>
           <td class="totalcell">DC/DC loss</td>
           <td class="totalcell totaldcdcloss typ">0</td>
           <td class="totalcell totaldcdcloss max">0</td>
@@ -88,7 +94,7 @@
           <td class="totalcell totalldoloss typ">0</td>
           <td class="totalcell totalldoloss max">0</td>
           <td class="totalcell">W</td>
-        </tr>
+        </tr>-->
       </table>
     </section>
 
diff --git a/js/class.Canvas.js b/js/class.Canvas.js
index 583d1d3..44be0c9 100644
--- a/js/class.Canvas.js
+++ b/js/class.Canvas.js
@@ -583,11 +583,17 @@ class Canvas {
     $('.totalpower.typ').text(Util.numberToSi(totalpower.typ,3));
     $('.totalpower.max').text(Util.numberToSi(totalpower.max,3));
 
+    // refresh the total losses
+    const loss = this.tree.getTotalLoss();
+    $('.totalloss.typ').text(Util.numberToSi(loss.typ,3));
+    $('.totalloss.max').text(Util.numberToSi(loss.max,3));
+
+
     // refresh the total efficiency
     const efficiency = this.tree.getTotalEfficiency();
     $('.totaleff.typ').text(Util.numberToSi(efficiency.typ,3));
     $('.totaleff.max').text(Util.numberToSi(efficiency.max,3));
-
+    /*
     // refresh the total losses
     const dcdcloss = this.tree.getTotalDCDCloss();
     $('.totaldcdcloss.typ').text(Util.numberToSi(dcdcloss.typ,3));
@@ -597,6 +603,7 @@ class Canvas {
     const ldoloss = this.tree.getTotalLDOloss();
     $('.totalldoloss.typ').text(Util.numberToSi(ldoloss.typ,3));
     $('.totalldoloss.max').text(Util.numberToSi(ldoloss.max,3));
+    */
   }
 
 
diff --git a/js/class.Tree.js b/js/class.Tree.js
index 73d8397..e2c9933 100644
--- a/js/class.Tree.js
+++ b/js/class.Tree.js
@@ -217,6 +217,20 @@ class Tree {
   }
 
 
+  // return the loss of all sources
+  getTotalLoss(typmax='both') {
+    let totalloss = {typ:0, max:0};
+    this.forEachSource((source) => {
+      totalloss.typ += source.getPowerLoss('typ');
+      totalloss.max += source.getPowerLoss('max');
+    });
+
+    // return the typ or max or both
+    if('both' === typmax) return totalloss;
+    else return totalloss[typmax];
+  }
+
+
   // Remove the reference to this tree from each item
   // Caution! Call .convertToCircular() before calling any other method
   convertToUncircular() {