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Thread: Power Cost Calculations
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07-08-2005, 02:13 AM #1Web Hosting Master
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Power Cost Calculations
How would I figure out how many kW/h a device uses? I want to figure this out so I can get an estimate of how much it'll cost to operate. It's consumtion is 715 Watts. Are there any calculators out there to do this for me?
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07-08-2005, 02:30 AM #2Retired Moderator
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1000 watts per kilowatt.
715/1000
0.715 kilowatts of power.. multiply that by the number of hours of use to get kWh
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07-08-2005, 03:10 AM #3Web Hosting Master
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And then go to your power companies website or price list and there you have it!
I had to do the same the other day...
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07-08-2005, 07:08 PM #4Junior Guru
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Although it says 715 watts doesn't necessarily mean it's using that much power (depending what it is). A more exact method of measuring would be the use of a separate power meter. The devices can be pretty cheap and simply plug into the wall in between the outlet and your device. I've linked to a review of one below as an example, it's simply a result near the top from Google. I have no idea on this particular device's performance, etc.
http://www.the-gadgeteer.com/review/...monitor_review
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07-08-2005, 08:07 PM #5Web Hosting Master
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Yeah... for instance with a clothes drier it depends on the power setting you have it on. Same with most appliances.
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07-08-2005, 08:27 PM #6Web Hosting Master
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Originally posted by -T{H}R-
Yeah... for instance with a clothes drier it depends on the power setting you have it on. Same with most appliances.
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07-08-2005, 08:51 PM #7Web Hosting Master
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How is that necessarily more relevant?
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07-08-2005, 08:56 PM #8Web Hosting Master
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Originally posted by -T{H}R-
How is that necessarily more relevant?
No harsh feelings ,
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07-08-2005, 09:04 PM #9Web Hosting Master
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By idle do you mean in powersaving mode or just when the CPU usage is at 0%?
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07-09-2005, 12:26 AM #10Web Hosting Master
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Originally posted by ichris
Not everybody uses a clothes drier, etc. Also, it was my guess that the "device" he is talking about was computer-related.
No harsh feelings ,
I'd need to colo it in a building somewhere here in the city, so I wanted a rough figure so I could offer to pay for it's power usage.
I can't figure out how to calculate this. So if it uses 715 watts we'll say, and the rate I pay is $0.068/kWh, how much will it cost to run per year?Last edited by MStar; 07-09-2005 at 12:34 AM.
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07-09-2005, 01:04 AM #11Web Hosting Master
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How many hours will you use it for per day/week/year?
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07-09-2005, 01:25 AM #12Web Hosting Master
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It'd be on 24/7/365.
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07-09-2005, 01:32 AM #13Web Hosting Master
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Ouch.
I make it:
24 (hours) x 365 (days) = 8760 (amount of hours in year)
8760 x .715 (usage per hour) x .068 (price per kw/h) = $425.9112 (roughly 1% of the purchase price of your equipment)...
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07-09-2005, 01:53 AM #14Web Hosting Master
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$36/month. Not as harsh as I was expecting.
Less than 1%, as the machine is $45,000 USD, and the power would cost $426 CAD.
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07-09-2005, 02:35 AM #15Web Hosting Master
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If it's mission critical you'd obviously need to look at backup systems etc.
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07-09-2005, 02:39 AM #16Web Hosting Master
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Of course.
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07-09-2005, 08:08 AM #17Web Hosting Master
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What type of $$$ Expensive machine u talking about lol...
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07-09-2005, 06:00 PM #18Web Hosting Master
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A really big wireless access point.
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07-09-2005, 07:53 PM #19Web Hosting Master
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Oh really lol...
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07-09-2005, 09:30 PM #20Web Hosting Master
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43dBm. 625x more powerful than your standard wi-fi card.