Retail price of electricity in California is 11.53 cents per kW hour. If you run a Vostro 200 Mini in CA, fitted with Intel Pentium Dual Core E2160 processor and a 17” monitor non-stop for a year, you would burn 12264* kW hours. This will cost you $1414. Assume you have a customer in CA with 500 such Vostro Minis. He is going to burn $353, 505 for a five year period just on electricity for these desktops.
65Watts + 75Watts * 8760 hours / 1000 = 12264 kW hours
12264kW hours * 11.53 /100 * 500 * 5years = $353,505
The standard business hours 9AM-6PM Monday to Friday contribute just 27% of the overall available time.
And in these 45 hours, reports indicate that, only 60% of the time the desktops are actively used. Rest goes in breaks, phone calls, meetings, and discussions. If someone enables strict power management ** for the above case, it will result in a savings of approximately $300k
$353,505 * 0.73 = $258,058 (for non-working hours)
$353,505 * 0.27 * 0.4 = $38,178 (for 40% idle time on office hours)
Total: $258,058+$38,178 = $296,236
*Thermal Design Power of E2160 is 65Watts. For monitors its 75Watts. 65+75*8760 hours /1000 =12264 kW hour. Refer Wikipedia for TDP of other processors.
** MSP Center enables you to implement power management across multiple customers’ right from your NOC. Checkout www.mspcenterplus.com for more details.
