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Computer Power Consumption Study. Christian Grieco Time Warner Cable Christian.grieco@twcable.com. IT Greening. Purpose of Study. Ascertain an estimate of expenditure on electricity to power staff computer infrastructure
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Computer Power ConsumptionStudy Christian Grieco Time Warner Cable Christian.grieco@twcable.com IT Greening
Purpose of Study • Ascertain an estimate of expenditure on electricity to power staff computer infrastructure • Determine $ savings potential in implementing various measures to improve efficiency without affecting productivity
DOE & EPA Computer Electricity Research • $25 - $75 savings per computer per year • 39% of computers in businesses are left powered on overnight and weekends • Study translates to savings of $13,750 - $41,250 yearly on DESKTOPS alone • Laptop savings not estimated as part of this study
Estimate of PC Inventory • 550 Desktops • 420 Laptops • 750 Flat Screen monitors • ? CRT monitors 550 Desktops 420 Laptops 750 Flat Screen monitors ? CRT monitors
Methodology • Use Kill A Watt device to measure actual electricity consumption of desktop and laptop computer • Measure usage • no power savings 24 hours • no power savings 8.5 hours • power savings 24 hours • power savings 8.5 hours
Business Class Desktops Laptops Flat screens
Business Class Laptop Power off the machine to realize 65% savings Even with no power saving features set
Business Class Desktop - NO Power Savings Power off the machine to realize 44% savings Even with no power saving features set
Business Class Desktop With Power Savings Features Enable Power Savings & Power Off to realize 54 % Savings
Telemarketing Desktops Laptops Flat screens
Estimated Yearly Savings Potential off @ night 3 weeks per month 10 out of 12 months based on 550 desktop computers with ONE monitor Estimated Total Expenditure on Power Generates 408,870 pounds CO2 Eliminate 212,982 pounds of CO2