PC Pro have been doing some research on the ways that Windows Vista can save power.....come again...save power?
It appears that computers are left on all the time with nobody using them (hmm, let me think about the IT Suite, or some of those odd computers in the back of teaching rooms). So, if you managed them better, you'd start saving power - and either save money or the planet, depending on your views (of course, you do both).
And how does it do this? Well, I'm glad you asked...
Windows Vista has a "sleep" mode, which is automatically activated if you don't use your PC for an hour, or you activate it yourself by hitting your power switch. What that does is move your PC into an ultra-low power state, where only the RAM is powered, everything else is closed down (processor, disks, screen etc). Which means that when you want to switch it back on, it comes back in two seconds (yes, really).
Based on a typical user using that better will save £23 to £46 a PC a year, just by switching the operating system. Now, in a typical university, which according to the UCISA survey has 4,000 PCs, that is at least £92,000 a year in electricity, or over 1,000 tonnes of carbon emissions. Just by changing some sofware.
Want the evidence? Here's the PC Pro Labs Survey