freqtop : Monitor for the CPU Frequency Scaling under Linux ( https://github.com/stolk/freqtop )
powerstat : Laptop power measuring tool ( https://launchpad.net/ubuntu/+source/powerstat https://github.com/ColinIanKing/powerstat )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a nest
For Paludis use this rsync : rsync://gentoo.zugaina.org/nest-portage
If you have a problem : ycarus(-at-)zugaina.org