Power Consumption of the Mac

I measured the electricity usage of various recent Macs with a wattmeter. Here are the results in the On/Sleep/Off modes, as well as the length of time it takes to save power by shutting your computer off rather than putting it to sleep.
- iMac G4 40W/4W/3W, shut off for 15 minutes of inactivity;
- iBook G4 14" 23W/8W/1.8W, shut off for 5 minutes of inactivity;
- PowerMac G5 (dual 2Ghz, 23" Cinema Display) 250W/10W/3.2W, shut of for 55 minutes of inativity
You can see that all the machines should be off for the afternoon break, and even more-so during the night. For more details, the you can find the complete article [in French] here:
http://www.cohabiter.ch/blog/2005/wattmetre