diff -r 99ee62eec34c -r 85d201f1c67f src/energy/helper/basic-energy-source-helper.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/energy/helper/basic-energy-source-helper.cc	Tue Mar 22 16:40:32 2011 -0700
@@ -0,0 +1,57 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2010 Network Security Lab, University of Washington, Seattle.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Authors: Sidharth Nabar <snabar@uw.edu>, He Wu <mdzz@u.washington.edu>
+ */
+
+#include "basic-energy-source-helper.h"
+#include "ns3/energy-source.h"
+
+namespace ns3 {
+
+BasicEnergySourceHelper::BasicEnergySourceHelper ()
+{
+  m_basicEnergySource.SetTypeId ("ns3::BasicEnergySource");
+}
+
+BasicEnergySourceHelper::~BasicEnergySourceHelper ()
+{
+}
+
+void
+BasicEnergySourceHelper::Set (std::string name, const AttributeValue &v)
+{
+  m_basicEnergySource.Set (name, v);
+}
+
+Ptr<EnergySource>
+BasicEnergySourceHelper::DoInstall (Ptr<Node> node) const
+{
+  NS_ASSERT (node != NULL);
+  // check if energy source already exists
+  Ptr<EnergySource> source = node->GetObject<EnergySource> ();
+  if (source != NULL)
+    {
+      NS_FATAL_ERROR ("Energy source already installed!");
+    }
+  source = m_basicEnergySource.Create<EnergySource> ();
+  NS_ASSERT (source != NULL);
+  source->SetNode (node);
+  return source;
+}
+
+} // namespace ns3