Electricity Bill: British Gas Click Energy 5
First 122 Units @ 22.086p
Following Units @ 10.151p
My “server” (HP DC 7100 – 2 x Sata HDD):
Average Power Consumption: ~80W (~60W when idle, 90W both disks spinning, 80W normal)
Run Time 1764:34 Hours = 73.52 Days
Consumption: 139KWh
Daily Consumption = 139 / 73.52 = 1.89KWh
Monthly Consumption (30 days) = 73.52 / 30 = 2.450666, so 139 / 2.450666 = 56.72KWh
Therefore the cost at 10.151p / unit for a month = £5.76
Cisco PIX 501
Average Power Consumption: 12.6W (very stable)
Current Draw: 0.5A
Consumption = 0.25KWH/24 hours
Monthly (30 days) = 0.25 * 30 = 7.5KWH
Therefore cost at 10.151p = 7.5*10.151 = £0.76
3COM OfficeConnect Wireless Router
Average Power Consumption: 15W (very stable)
Current Draw: 0.7A
Consumption = 0.39KWH/24 hours
Monthly (30 days) = 0.39 * 30 = 11.7KWH
Therefore cost at 10.151p = 7.5*10.151 = £1.19
New Server – SheevaPlug Multi + eSATA Disk
Average Power Consumption: ?
Current Draw: ~22W
Consumption = 0.475KWH/24 hours
Monthly (30 days) = 0.475 * 30 =14.3 KWH
Therefore cost at 10.151p = 14.3*10.151 = £1.45
PS3 Playstation
Standby current draw: 10.1W
Consumption = 0.47KWH/24H
Monthly (30 days) = 0.47 * 30 =14.11 KWH
Therefore cost at 10.151p =14.1 * 10.151 = £1.43
Media PC (HP/Compaq Evo Something)
Standby current draw: 22W
Consumption = 0.24KWH/11 hours = 0.52KWH/24H
Monthly (30 days) = 0.52 * 30 =15.71 KWH
Therefore cost at 10.151p = 15.71*10.151 = £1.59