Facts & Tips

Facts about Printing:

  • The pilot project for the Managed Print Service, which covered just a small staff area, detected 140,000 of unwanted print in just one month. 
  • Laser printers use a significant amount of energy when printing – it can be four times that of an active desktop pc.
  • Each toner cartridge requires one or two litres of oil and creates 4.8kg of CO2 in its production.  Over a year, in the UK alone, this represents 200,000,000 litres of oil and the creation of 480,000 tonnes of CO2 – this is equivalent to a medium size car driving 4 billion kilometres.

Facts about PC Power Consumption:

  • You do not need to leave your PC on for updates to be applied overnight. Updates are applied to your computer during normal working hours.
  • Rebooting your PC does not wear out the hard disk. Modern disks are in no danger of being worn out through rebooting. They are much more likely to be damaged by being bathed in heat by being left on 24 hours a day.
  • Don’t use screen savers. Screen savers that display moving images cause your monitor to consume almost as much electricity as during active use - the computer has to work to generate the screen saver. The best option is to turn off your monitor when you are not using it.
  • Conservatively assuming a 100watt PC with an LCD monitor, actively used 8 hours per day, 5 days per week, but left on all the time, would use 930.8kWh unnecessarily per year at a cost of £88.  And that is just for 1 PC; there are 7000 PC’s across the University.

Facts about Electrical Equipment Waste:

  • Gartner Research recently predicted that 400 million computers would be replaced in homes and businesses across America in a three year period, generating large quantities of waste.
  • Taking the average weight to be 15 pounds, in less than 10 years, computer upgrades will generate over six billion pounds of waste, not even taking into account screens.

Useful Tips:

  • Set your PC to go to sleep automatically when you are not using it and make sure your PC, monitor, printer, scanner are all switched off at the end of each day.
  • Use Wake Up My PC to switch on your PC to work remotely when you need to.
  • Try to proof documents on screen: Use features in Word to help, such as Track Changes or different document views.