when it is closing time for my computer shop i shut down all 5 computers but leave the screens in standbye and leave the printers on and and leave the adsl modem on. my question is how much is the costing me overnight when i leave all computer screens in standbye and adsl modem on as well as two printers left on. how much $ is this costing me
2006-12-09 10:41:36 · 6 answers · asked by Anonymous in Computers & Internet ➔ Hardware ➔ Desktops
Probably not much in energy costs, but I learned from experience the lights in the printers will soon burn out if you leave them on.
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2006-12-09 11:04:23 · answer #1 · answered by Elaine B 6 · 0⤊ 0⤋
Fellow neurotic,
We need to know the standby consumption of each monitor, as well as the printers and ADSL Modem. Also need to know your local rate charge for electricity and the duration of the non-use. Does it include weekends? What is the peak or spike or start-up consumption of each device? Remember that if you want a true comparison, then you would need to include those. Is there a significant reason that you have two printers for only five PCs. Also, you did not mention speakers or routers.
OK, so here goes: According to the EIA, August 2006 national average KW/hr rate for Commercial was $0.0996. (less than a dime).
An energy star tier 1 monitor in sleep mode uses less than or equal to 4 watts. 4W * 5 monitors = 20W = 0.02kW If left on for a solid hour then it should be 0.02kW/hr. If by overnight you mean 5 P.M. to 8 A.M. plus all of Saturday and all of Sunday then 123hrs /week * 52 weeks /12 month = 533 hours.
A standard energy star printer capable of producing less than or equal to 10 ppm uses less than 10W in standby mode. 10W * 2 printers = 20W = 0.02kW
Now we have 0.04kW * 533 hrs = 21.32kW/hr * $0.0996 = $2.12 per month, provided you have similar equipment to those cited by the EIA and the Energy Star program.
That $2.12 per month does not include the reduction of saving on account of the start-up consumption of the monitors, and it does not include the ADSL modem.
I'll close with this thought, watt quantity, type and strength of lighting are you using? If you have incandescents, and could replace them with lower wattage florescent, and could run 1 or 2 less bulbs (depending on size of shop), and perhaps open a shade slightly to let sunlight in during the winter, would it be worth it? 100W-23W/1000*180hr*$0.0996=$1.38 per bulb per month. If you have 10 incandescents that's $13.80/month. If you eliminate one 100W bulb completely that's $1.79.
2006-12-09 12:25:55 · answer #2 · answered by I think, therefore I broke it? 2 · 1⤊ 0⤋
Honestly it is hard to tell without knowing the power usage of the monitors (flat, crt, model), but in a full standby you are using very little, equivilient to a few lightbulbs.
2006-12-09 10:45:25 · answer #3 · answered by Craig 4 · 0⤊ 0⤋
Probably no more than $5 a month. None of that stuff uses much juice when it's inactive.
2006-12-09 13:43:04 · answer #4 · answered by Nomadd 7 · 0⤊ 0⤋
Not much at all - they aren't drawing much power when they are idle. If it's enough to stress you, just turn them off also -- peace of mind is worth it, eh?
2006-12-09 10:44:49 · answer #5 · answered by hockeychic1974 2 · 0⤊ 0⤋
depending the size of the monitor and the use of power it uses in standby
2006-12-09 11:01:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋