diff --git a/hal.db b/hal.db
index c14ec158..bcc25b1f 100755
Binary files a/hal.db and b/hal.db differ
diff --git a/src/se/koc/hal/PowerChallenge.java b/src/se/koc/hal/PowerChallenge.java
new file mode 100755
index 00000000..72d9752f
--- /dev/null
+++ b/src/se/koc/hal/PowerChallenge.java
@@ -0,0 +1,29 @@
+package se.koc.hal;
+
+
+import se.koc.hal.deamon.DataAggregatorDaemon;
+import se.koc.hal.deamon.HalDaemon;
+import zutil.db.DBConnection;
+
+import java.util.Timer;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+public class PowerChallenge {
+    private static HalDaemon[] daemons = new HalDaemon[]{
+            new DataAggregatorDaemon()
+    };
+
+    public static void main(String[] args) throws Exception {
+
+        // init Database
+        final DBConnection db = new DBConnection(DBConnection.DBMS.SQLite, "hal.db");
+
+        // init daemons
+        Timer daemonTimer = new Timer();
+        for(HalDaemon daemon : daemons){
+            daemon.initiate(daemonTimer);
+        }
+    }
+}
diff --git a/src/se/koc/hal/deamon/DataAggregatorDaemon.java b/src/se/koc/hal/deamon/DataAggregatorDaemon.java
new file mode 100755
index 00000000..4ad7544f
--- /dev/null
+++ b/src/se/koc/hal/deamon/DataAggregatorDaemon.java
@@ -0,0 +1,22 @@
+package se.koc.hal.deamon;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+public class DataAggregatorDaemon extends TimerTask implements HalDaemon {
+    private static final int FIVE_MINUTES_IN_MS = 5 * 60 * 1000;
+
+
+    public void initiate(Timer timer){
+        timer.schedule(this, FIVE_MINUTES_IN_MS);
+    }
+
+
+    @Override
+    public void run() {
+    
+    }
+}
diff --git a/src/se/koc/hal/deamon/HalDaemon.java b/src/se/koc/hal/deamon/HalDaemon.java
new file mode 100755
index 00000000..82087dda
--- /dev/null
+++ b/src/se/koc/hal/deamon/HalDaemon.java
@@ -0,0 +1,12 @@
+package se.koc.hal.deamon;
+
+import java.util.Timer;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+public interface HalDaemon {
+    public void initiate(Timer timer);
+
+    public void run();
+}
diff --git a/src/se/koc/hal/struct/PowerMeterSensor.java b/src/se/koc/hal/struct/PowerMeterSensor.java
new file mode 100755
index 00000000..13c76a04
--- /dev/null
+++ b/src/se/koc/hal/struct/PowerMeterSensor.java
@@ -0,0 +1,7 @@
+package se.koc.hal.struct;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+public class PowerMeterSensor extends Sensor{
+}
diff --git a/src/se/koc/hal/struct/Sensor.java b/src/se/koc/hal/struct/Sensor.java
new file mode 100755
index 00000000..23d47cb6
--- /dev/null
+++ b/src/se/koc/hal/struct/Sensor.java
@@ -0,0 +1,11 @@
+package se.koc.hal.struct;
+
+import zutil.db.bean.DBBean;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+@DBBean.DBTable("sensor")
+public class Sensor extends DBBean{
+
+}
diff --git a/src/se/koc/hal/struct/TemperatureSensor.java b/src/se/koc/hal/struct/TemperatureSensor.java
new file mode 100755
index 00000000..56d3339a
--- /dev/null
+++ b/src/se/koc/hal/struct/TemperatureSensor.java
@@ -0,0 +1,7 @@
+package se.koc.hal.struct;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+public class TemperatureSensor extends Sensor {
+}
diff --git a/src/se/koc/hal/struct/Trigger.java b/src/se/koc/hal/struct/Trigger.java
deleted file mode 100755
index 4cb84f7a..00000000
--- a/src/se/koc/hal/struct/Trigger.java
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (c) 2015 Ziver
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-package se.koc.hal.struct;
-
-/**
- * Created by Ziver on 2015-05-07.
- */
-public interface Trigger {
-
-}
diff --git a/src/se/koc/hal/struct/User.java b/src/se/koc/hal/struct/User.java
new file mode 100755
index 00000000..8abd448a
--- /dev/null
+++ b/src/se/koc/hal/struct/User.java
@@ -0,0 +1,16 @@
+package se.koc.hal.struct;
+
+import zutil.db.bean.DBBean;
+
+/**
+ * Created by Ziver on 2015-12-03.
+ */
+@DBBean.DBTable("user")
+public class User extends DBBean{
+
+    private String name;
+    private String address;
+    private boolean external;
+
+
+}