Network of Excellence in Internet Science

Trends in worldwide ICT electricity consumption from 2007 to 2012

TitleTrends in worldwide ICT electricity consumption from 2007 to 2012
Publication TypeJournal Article
Year of Publication2014
AuthorsVan Heddeghem, W, Lambert, S, Lannoo, B, Colle, D, Pickavet, M, Demeester, P
JournalComputer Communications
Start Page64
Date Published09/2014
AbstractInformation and Communication Technology (ICT) devices and services are becoming more and more widespread in all aspects of human life. Following an increased worldwide focus on the environmental impacts of energy consumption in general, there is also a growing attention to the electricity consumption associated with ICT equipment. In this paper we assess how ICT electricity consumption in the use phase has evolved from 2007 to 2012 based on three main ICT categories: communication networks, personal computers, and data centers. We provide a detailed description of how we calculate the electricity use and evolution in these three categories. Our estimates show that the yearly growth of all three individual ICT categories (10%, 5%, and 4%, respectively) is higher than the growth of worldwide electricity consumption in the same time frame (3%). The relative share of this subset of ICT products and services in the total worldwide electricity consumption has increased from about 3.9% in 2007 to 4.6% in 2012. We find that the absolute electricity consumption of each of the three categories is still roughly equal. This highlights the need for energyefficiency research across all these domains, rather than focusing on a single one.
Which JRA does it relate to?JRA8