Gerard Smit TU Twente

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Conferentie Greening the Enterprise,
IT Executive, 25 november 2009
Science meets IT
Wat 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)

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Gerard Smit TU Twente

  1. 1. Prof. dr. ir. Gerard J.M. Smit ICT & Energy 1
  2. 2. Electricity consumption in ICT S.H. Clevers, R. Verweij. ICT stroomt door. Inventariserend onderzoek naar het elektriciteitsverbruik van de ICT-sector & ICT-apparatuur. Den Haag 25-10-2007. (http://www.ez.nl/content.jsp?objectid=155077&rid=155076) 2
  3. 3. Energy issues of ICT Batteries and mobile ICT equipment With the first laptops and mobile phones energy became an important design issue for the first time in ICT Power density of processors W/cm2 High cost of cooling processor boards Energy cost of communication Wireless base stations working 24/7 Routers working 24/7 Large amount of PCs Worldwide sales of PCs is in hundreds of millions Result Cost for energy during lifetime is often more than purchase costs Large overall CO2 emission of ICT equipment 3
  4. 4. Worldwide sales of PCs in millions 1400 1200 1000 800 PC's 600 400 200 0 1991-1995 1995-2000 2001-2005 2005-2010 4
  5. 5. Why is this a problem? Standard PC consumes ~ 200W 24 Hours per day 365 days per year Total energy consumption: 1.752 kWh per year Or 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 5
  6. 6. The energy bill of Internet 6

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