For others it's the boot up time, pc's take time to initialise the operating system and programmes, and then these days you have a number of network based services that need to be synchronised, and on an overloaded network or server that can all take some time. For these users, hibernating the machine is a good option. Hibernation writes the current state of your desktop and applications to disk and then powers down the computer. When you turn it back on, it should be back to the state you had it at previously in less than a minute, with thirty seconds being a more usual time, shorter than the time it takes to say good morning to your colleagues.
Of course there is still a minority of office computer users who won't power down their machines. Rather than continue an intellectual debate that was decisively settled by the drive manufacturers in the last century, you should probably turn to a power management solution.
As an environmental charity we don't have the infrastructure to test all of these programmes, but this post will get you up to speed on what is currently out there and what we know about their feature set. We'll be very interested in hearing about your individual experiences with these products.
Centralised Commercial Applications
1e - Nightwatchman
Verdiem - Surveyor
Data Synergy – Powerman
Faronics – Powersave
Other Centralised Applications
Single User Applications
These all help an individual user activate power settings. Some then report those savings to the user, or centrally. Most of them are windows only, though at least one works on the Mac.
HP – Power to Change