Archive for March, 2008

Turn off a Monitor, Change the World

Friday, March 7th, 2008

Turn off a Monitor, Change the World

From an energy saving and cost effectiveness perspectives, we strongly recommend that you turn-off your monitor/PC after daily working hours, stop using screensavers, instead use the automatically turn off for your monitors and also set the PCs on hibernate mode during breaks/meetings!  The following information and figures may surprise you.

At RMB1 per kilowatt hour (kwh), turning off a 75-watt monitor outside the 40 hr work week saves RMB41 (6USD) a month . This saves 750 lb. of CO2 (greenhouse gas emissions) by burning 450 fewer pounds of coal each year! LCD monitors consume about one third energy, compared with CRT.  A mid size office with more than 800 desktops/monitors will consume 36164 KWH per month during night time, which will increase operation cost by RMB36, 164 per month (5k USD).

If all fortune 500 corporations could do this,  it will be great help in energy saving and environmental protection.  Just start today, turn off your monitor to save energy when you do not need it!

More information

Some typical power consumption for various monitors:
Desktop computer: 60w
CRT (Cathode Ray Tube) monitor: 75w
LCD monitor  25w

FAQ

Screen savers save energy FALSE

Screen savers don’t save energy

2.    It’s better to leave a monitor on because continually turning them on and off uses more energy

FALSE

A PC monitor only consumes one seconds energy worth of running time when being started up or closed down. As monitors account for 70% of the PCs energy use, it’s always better to turn them off when at lunch or at meetings.

3.    Monitors automatically go in to sleep mode

FALSE You need to activate the PCs energy saving functions.