--- a/src/energy/model/basic-energy-source.cc	Sun Mar 29 16:08:40 2015 +0200
+++ b/src/energy/model/basic-energy-source.cc	Sun Mar 29 16:12:50 2015 +0200
@@ -36,6 +36,7 @@
 {
   static TypeId tid = TypeId ("ns3::BasicEnergySource")
     .SetParent<EnergySource> ()
+    .SetGroupName ("Energy")
     .AddConstructor<BasicEnergySource> ()
     .AddAttribute ("BasicEnergySourceInitialEnergyJ",
                    "Initial energy stored in basic energy source.",