Edison: freeware app to automate your computer’s energy use
Edison is a freeware application for your Windows XP or Vista machine that regulates its energy use, mainly by doing things like turning off your monitor, spinning down your hard drive and/or putting your computer into standby or hibernation.
Assuming you haven’t been a good boy/girl and already turned on some of those power-saving features, then you expect to save a good $20 to $35 per year per computer. Edison will also calculate your savings. Ok, so it doesn’t sound like a lot, but if you’re a poweruser who has a monster machine with more than 1 or 2 hard drives, a souped up graphics card and more, then you may well save a lot more. And of course, let’s not forget the significant benefit to the planet.
via Wired.com