Gerard Smit TU Twente
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1 Prof. dr. ir. Gerard J.M. Smit ICT & Energy
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Conferentie Greening the Enterprise,IT Executive, 25 november 2009 Science meets ITWat heeft de Nederlandse wetenschap eigenlijk in de naaste toekomst te bieden op het gebied van duurzaamheid. Discussie met Nederlandse topwetenschappers Prof.ir. Ton Koonen en Prof. dr. ir. Gerard Smit.Moderator: Roel Croes (mede-oprichter en bestuurslid Stichting GreenICT)Prof.ir. Ton Koonen (hoogleraar Technische Universiteit Eindhoven)Prof. dr. ir. Gerard Smit (hoogleraar Universiteit Twente)
Transcript of Gerard Smit TU Twente
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Prof. dr. ir. Gerard J.M. Smit
ICT & Energy
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Electricity consumption in ICT
S.H. Clevers, R. Verweij. ICT stroomt door. Inventariserend onderzoek naar het elektriciteitsverbruikvan de ICT-sector & ICT-apparatuur. Den Haag 25-10-2007. (http://www.ez.nl/content.jsp?objectid=155077&rid=155076)
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Energy issues of ICT
Batteries and mobile ICT equipmentWith the first laptops and mobile phones energy became an important design issue for the first time in ICT
Power density of processors W/cm2High cost of cooling processor boards
Energy cost of communicationWireless base stations working 24/7Routers working 24/7
Large amount of PCsWorldwide sales of PCs is in hundreds of millions
ResultCost for energy during lifetime is often more than purchase costsLarge overall CO2 emission of ICT equipment
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1991-1995 1995-2000 2001-2005 2005-2010
PC's
Worldwide sales of PCs in millions
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Why is this a problem?
Standard PC consumes ~ 200W24 Hours per day 365 days per yearTotal energy consumption: 1.752 kWh per yearOr 1.752 x 0.25 = € 438 energy costs per year
You can buy a PC for € 500
Energy costs during lifetime more than purchase costs
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The energy bill of Internet
