For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:branches:X11:xfce/openSUSE_Tumbleweed/home:tiwai:branches:X11:xfce.repo
zypper refresh
zypper install xfce4-power-manager
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:branches:X11:xfce/openSUSE_Slowroll/home:tiwai:branches:X11:xfce.repo
zypper refresh
zypper install xfce4-power-manager
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:branches:X11:xfce/openSUSE_Factory/home:tiwai:branches:X11:xfce.repo
zypper refresh
zypper install xfce4-power-manager
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:branches:X11:xfce/16.0/home:tiwai:branches:X11:xfce.repo
zypper refresh
zypper install xfce4-power-manager
For 15.7 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:branches:X11:xfce/15.7/home:tiwai:branches:X11:xfce.repo
zypper refresh
zypper install xfce4-power-manager
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:tiwai:branches:X11:xfce/15.6/home:tiwai:branches:X11:xfce.repo
zypper refresh
zypper install xfce4-power-manager