I have the same exact issue. I recently upgraded to 15.04. I had the power indicator icon in 14.10, but it disappeared when I upgraded.
I was doing some searching online, and found a lot of people suggesting to going into the xfce4-power-manager-settings and setting "Show tray icon:" to "Always show icon". Some of this information is a couple years old, so it is possible that the answer no longer applies. When I open xfce4-power-manager-settings, the "Show tray icon" option does not appear. More online research led me to the following configuration file: ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-power-manager.xml It looks like older versions of this file had a "Show tray icon" option [see https://forum.xfce.org/viewtopic.php?id=8786], but the one installed in 15.04 does not. Either this option is no longer supported, or someone left it out accidentally. Maybe this can lead someone towards a solution for this problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1446247 Title: Lubuntu 15.04 - No power indicator in applet indicator To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1446247/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs