Solved

Server energy comsumption calculations

Posted on 2009-07-16
5
265 Views
Last Modified: 2012-05-07
if i use this online calc with the wattage below from a meter i have on the server
http://www.eu-energystar.org/en/en_008b.shtml

with the same wattage and always on i get ¬1150.5 per year but the below calcs give me ¬258.84 per year


can someone please sanity check this cheers


HP ML 350 G5

volts x amps= watts

235v x 0.85amp = 199.75

24 Hours Per Day X 30 Days per Month (average) = 720 hours per month
199.75 Watts Per Hour X 720 hours per month = 143,820 Watts per month
143,820 Watts per month / 1000 Watts per Kilowatt hour = 143.82 kW Hours
143.82 kWh X  .15 cents per kWh = ¬21.57 per month
¬258.84 per year
¬21.57 / 720 hours = .0299 euros per hour/ 2.99 cents per hour
0
Comment
Question by:nostrasystems
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 69

Expert Comment

by:Callandor
ID: 24871671
That calculator is assuming there are 240 days in a year - I guess it only counts business days and assumes equipment is turned off on weekends and holidays. If it assumed 365 days a year, total kW would be 1749.8, not 1150.5.
 
Also, your 258.84 figure is an annual dollar cost, not a total kW use in a year.
0
 

Author Comment

by:nostrasystems
ID: 24873226
but does it cost 250 or 1000 to run an entry level server per year always on?
0
 
LVL 69

Expert Comment

by:Callandor
ID: 24875229
For 365 days/year, that's 1749.8 * $0.15 cost per kW = $262.47 - I don't know why the calculator is using a $1.00/kWhr rate.
0
 

Author Comment

by:nostrasystems
ID: 24876442
how can u see it using 1 dollar an hour? its default is 0.11 euro cents?

so a milloin percent if the watt draw is 128watt on my meter its roughly 250 euro for 365 x 24 x 7

Please confirm thanks for your help
0
 
LVL 69

Accepted Solution

by:
Callandor earned 500 total points
ID: 24878140
The total power usage it calculates is 1150.5 kW-hr/year for a small server (assuming 240 days/year) and the total cost it comes up with is 759.3 euros.  I can't see how 0.11 euros/kW-hr can get you to this total, because I calculate it as 0.66 euros/kW-hr (the $1/kW-hr was a mistake because I didn't have it set to server).

For 128 watts, the cost is even less, because I was using 199.75 watts, so it's 128 x 365 x 24 = 1121.28 kW-hr/year, and at $0.15 per kW = $168.192.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

pc, laptop  monitor connection configurations
A clone is a duplicate copy. Sheep have been cloned and maybe someday even people will be cloned, but disk cloning (performed by the hard drive cloning software) is a vital tool used to manage and protect data. Let’s look at what hard drive cloning …
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface. Change Cu…
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question