diff --git a/octoprint_mystromswitch/__init__.py b/octoprint_mystromswitch/__init__.py
index 37dcb43..7faa453 100644
--- a/octoprint_mystromswitch/__init__.py
+++ b/octoprint_mystromswitch/__init__.py
@@ -2,6 +2,7 @@
 from __future__ import absolute_import
 
 import ssl
+import time
 
 import octoprint.plugin
 import requests
@@ -25,6 +26,9 @@ class MyStromSwitchPlugin(octoprint.plugin.SettingsPlugin,
 
         self._timer = None
 
+        self.energy = 0
+        self.lastTimeStamp = 0
+
         self.ctx = ssl.create_default_context()
         self.ctx.check_hostname = False
         self.ctx.verify_mode = ssl.CERT_NONE
@@ -75,9 +79,17 @@ class MyStromSwitchPlugin(octoprint.plugin.SettingsPlugin,
             try:
                 request = requests.get(
                     'http://{}/report'.format(self.ip), timeout=1)
-                data = request.json()
-                data["onOffButtonEnabled"] = self.onOffButtonEnabled
-                self._plugin_manager.send_plugin_message(self._identifier, data)
+                if request.status_code == 200:
+                    timestamp = time.time()
+                    data = request.json()
+                    if not self.lastTimeStamp == 0:
+                        intervall = timestamp - self.lastTimeStamp
+                        # Energy in Wh
+                        self.energy = self.energy + (intervall * data["power"] / 3600)
+                    self.lastTimeStamp = timestamp
+                    data["energy"] = self.powerConsumed
+                    data["onOffButtonEnabled"] = self.onOffButtonEnabled
+                    self._plugin_manager.send_plugin_message(self._identifier, data)
             except (requests.exceptions.ConnectionError, ValueError):
                 self._logger.info('Connection Error Host: {}'.format(self.ip))
         else:
diff --git a/octoprint_mystromswitch/static/js/mystromswitch.js b/octoprint_mystromswitch/static/js/mystromswitch.js
index e6bbbc3..63ec276 100644
--- a/octoprint_mystromswitch/static/js/mystromswitch.js
+++ b/octoprint_mystromswitch/static/js/mystromswitch.js
@@ -8,6 +8,7 @@ $(function() {
 
         self.onOffButtonEnabled = ko.observable();
         self.mystromswitchPowerValue = document.getElementById("mystromswitchPowerValue")
+        self.mystromswitchEnergyValue = document.getElementById("mystromswitchEnergyValue")
 
         self.onToggleRelayEvent = function(){
             $.ajax({
@@ -32,6 +33,7 @@ $(function() {
                 return;
             }
 			self.onOffButtonEnabled(data.onOffButtonEnabled);
+			self.mystromswitchEnergyValue.innerHTML = "Energy: "+data.energy.toFixed(1)+"Wh"
 			if(data.relay == false){
 			    self.mystromswitchPowerValue.innerHTML = "Relay is off";
 			} else if (data.power != null) {
diff --git a/octoprint_mystromswitch/templates/mystromswitch_sidebar.jinja2 b/octoprint_mystromswitch/templates/mystromswitch_sidebar.jinja2
index 0dc213f..8fa3af7 100644
--- a/octoprint_mystromswitch/templates/mystromswitch_sidebar.jinja2
+++ b/octoprint_mystromswitch/templates/mystromswitch_sidebar.jinja2
@@ -1,4 +1,5 @@
 <div class="sidebar_plugin_mystromswitch">
     <label class="control-label" id="mystromswitchPowerValue">Powerconsumption 0.0W</label>
+    <label class="control-label" id="mystromswitchEnergyValue">Energy 0.0Wh</label>
     <button class="btn btn-primary" data-bind="click: onToggleRelayEvent, visible : onOffButtonEnabled">{{ _('Toggle Relais') }}</button>
 </div>
diff --git a/setup.py b/setup.py
index 59df301..bc82a91 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@ plugin_package = "octoprint_mystromswitch"
 plugin_name = "OctoPrint-MyStromSwitch"
 
 # The plugin's version. Can be overwritten within OctoPrint's internal data via __plugin_version__ in the plugin module
-plugin_version = "0.3.0"
+plugin_version = "0.4.0"
 
 # The plugin's description. Can be overwritten within OctoPrint's internal data via __plugin_description__ in the plugin
 # module