An average desktop computer has a power usage of between 80 and 250 watts, depending on graphics cards and additional peripherals. The cost to the University to operate a typical computer and monitor workstation (130 watts @ 11c kW/h) for 24 hours per day, 7 days per week, 365 days per year, is $129.73. The same workstation operating only during work hours – 8 hours per day, 5 days per week, year round is only $30.80.
An enormous amount of energy is wasted while the computer or printer sits idle, perhaps while you are in a meeting, on the telephone, or at lunch. Any current computer, printer, fax machine, or photocopier has energy saving features that put the machine into a sleep mode when it's not in use. Substantial power savings of between 50 to 90 per cent can be immediately realised.