Hello There, Is there anyway I can see how much energy my iMac is using? I would like to know how much it uses when in sleep mode, how much when turned off but still plugged in (to save clock battery) and how much it is using when I'm working on it?. It is an iMac G3 CRT SE with a 600Mhz speed processor and a 60 Gb hard drive. Is there some software (preferably freeware) for monitoring power consumption?