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111 Watts + Accessing Hard Drive 96 Watts Desktop Mode – Idle 92 Watts "Blank Screen" Screen Saver Mode 36 Watts CPU Idle and Monitor configured for Energy Star Power Down Typical Dell Optiplex Series CPU with 14" Trinitron Monitor
Cost of Leaving Computer On Continually: If one computer is left on 5 days a week in the Desktop Mode
cited above, it will draw 96 Watts. Let’s say that this computer is not used
from 4 PM in the afternoon until 8 AM in the morning. This would be a total of
16 hours the machine is on and not in use. We pay the Utility Company
approximately $ .06 per KWh which equates to $ .96 a day...not bad? If one
computer is left on in every classroom in the district, the cost is now $14,400
per day. In a typical monthly billing cycle, this would cost the district an
additional $403,200 per month. Now consider that the buildings are in use for
instruction approximately 10 months a year...the impact annually is $4,032,000. |
Helpful
computer tip... 
The Facts: