My annual power bill runs from December until November. So last year is just closed and billed. In 2010 I kept system powered off when not in use but plugged into the mains. That year we used 7200 kWhr. In 2011 unused systems were also unplugged. We used 5100 kWhr. At .25 cents per kWhr that's a huge difference. I have found that systems such as the Alphaserver 1000A use a lot of power when they are plugged in but not switched on. I went to swap out a power supply from such a machine and found it very warm, almost hot (the PSU fan does not run when they are "off"). I imagine this also applies to the Alphaserver 800, ES40 and other systems that support the RMC facility for remote power management. In fact anything with a silly little front panel on/off switch should probably be plugged out when not in use. Regards, Peter Coghlan. BTP::PETER