Good solution to the power crisis.This is one way around. Let all professionals take the oath of not wasting the power(eg: When they move out of desk let them atleast switch off the monitor). When they are out for weekends try to switch off the systems. The solution provided here is also good but it takes some more time to implement the same across the globe.
I dont think, it will work.it is the fellow who should throw some common sense while using a PC.if everone sticks to that,automatically you can save considerable amount of power without using any software.