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Energy saving at data hotels; Doing more with less
Gepubliceerd door: Publicatie datum:
ECN Energie in de Gebouwde Omgeving en Netten 29-4-2008
ECN publicatienummer: Publicatie type:
ECN-E--08-035 ECN rapport
Aantal pagina's: Volledige tekst:
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During the past decade in the Netherlands, the increasing traffic of digital data has resulted in the Information and Communication (ICT) industry becoming one of the most energy-intensive sectors. This report presents ways of reducing energy consumption in the ICT industry. A method for judging the energy efficiency of an ICT company (data hotel) is presented, as is an overview of the impact of various technical concepts and energy-saving measures on energy ef-ficiency. The technical concepts and energy saving measures are explained and, where possible, payback periods indicated. The idea is that local government, in partnership with the ICT indus-try, can use the findings of this report to reduce energy consumption. There is a lot of techno-logy available to reduce the energy demand of the ICT industry. An important condition for im-proving energy efficiency is preventing cooled air from being mixed with heated air in computer rooms to allow a higher cooled air temperature, thus avoiding unnecessary running time for compression cooling. A suitable indicator that can be used to judge the energy efficiency of an ICT company (data hotel) is “Energy Usage Effectiveness” (EUE). This is the quotient of the total annual energy consumption and the annual energy consumption of the ICT equipment (core business). Early adapters in the ICT industry have already demonstrated that an EUE of 1.1 is feasible. For existing ICT companies (data hotels) a maximum EUE of 1.4 is achievable with available technologies. New ICT companies (data hotels) can use modern technologies, making a maximum EUE of 1.3 feasible.

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