Computers on 24/7

[Jvoelker]

I have 3 computers on 24/7 with 2 of them are semi high end computers and 2 have LED's.. oen is a 600 watt, 1 is a 380 watt and the other im not sure its prob about 300 watts, my question is how much electricity a month would all 3 of these use or how much would my electric bill increase, thanks for the help, sorry not sure if this is the right place to be asking this question, thank you.

 

[JackNaylorPE]

When not in use, puters drop into "sleep" mode using just a fraction of the normal power consumption. Let's say 10 watts (I've measured lower) and 8 hours a day of actual usage ...16 in sleep mode. US average electric cost is 10 cents per Kw

10W * (1kW / 1000W) * (16h * 30) * $0.10/kWh = $0.43 per month x 3 puters = $1.29 a month

Note: In this example, (see pg 3) Dell Dimension 4600 uses 8 watts in sleep mode

http://www.energystar.gov/ia/partners/prod_development/revisions/downloads/computer/ReducingPCPowerConsumption.pdf