Allowing your computer to sleep and hibernate is the most energy efficient method for saving this resource.
Screensavers use the same electricity as a computer being used, as the screensaver uses both the GPU and CPU on your computer.
With the monitor on, there is no savings.
slide 2 of 3
Business Computer Usage
Average Power Consumption:
Desktop Computers 60 -500 watts
Sleep or standby 2-6 watts
Laptops 15 -60 watts
Monitors 100 – 150 watts
Monitor LCD 35-45 watts
Sleeping Monitors and turned off monitors can use 0-15 watts.
Maxium business consumption:
A business with 400 computers can use 260,000 watts of power or more per hour (maximum usage).
An average eight hour day equals 2,080,000 watts per day or 2080 kilowatts.
The average cost per kilowatt hour was 11 cents in April 2008 across the United States. (A kilowatt hour is if a kilowatt is being used continuously for one hour.) This would equal greater than $4500 per month for your company’s computers alone at max usage. The odds of this being true (400 computers at max) is slim.
Average business consumption:
Generally the average is 120 watts per computer or 48,000 watts for all computers per hour. A typical day is 384,000 watts or 384 kilowatts. This would equal greater than $840.00 per month on average.
How to go green:
Given these basic amounts, small businesses could save hundreds of dollars each month:
Set all computers to hibernate and use standby.
Personnel should be trained to turn off monitors when not in use.
Information Technology managers should look at replacing servers as money permits.
The savings alone could pay for the replacement equipment.
slide 3 of 3
Additional Green Computing Recommendations
It's easy enough to make your computers use less energy. Use your computer's power management options to power it down when it's not in use. Should you need to manage the settings of multiple computers, power management software such as Faronics Power Save can help you do so efficiently. And, finally, be sure to Fight the Phantoms!