No surprises there but an education post all the same from the Windows 7 team blog that includes some quick tips…some obvious but some perhaps less so
Quick tips: The easiest way to save power on a desktop PC is reduce the display idle timeout to something very aggressive, such as 2 or 5 minutes. If you have a screen saver enabled, disable it to allow the display to turn off. On a mobile PC, the easiest way to extend battery life is to reduce the brightness of the display in addition. Also note that many of the new all-in-one machines use laptop components and thus from a power management perspective look like laptops.
a quick tip, the disk cleanup wizard, or powercfg –hibernate off, can remove the disk space pre-allocated to hibernate
As always, an educational read from Steven’s boys.