Header

UZH-Logo

Maintenance Infos

The direct energy demand of internet data flows


Coroama, Vlad C; Hilty, Lorenz; Heiri, Ernst; Horn, Frank M (2013). The direct energy demand of internet data flows. Journal of Industrial Ecology, 17(5):680-688.

Abstract

The direct energy demand of Internet data flows can be assessed using a variety of methodological approaches (top-down, bottom-up, or hybrid/ model based) and different definitions of system boundaries. Because of this diversity, results reported in the literature differ by up to two orders of magnitude and are difficult to compare.We present a first assessment that uses a pure bottom-up approach and a system boundary that includes only transmission equipment. The assessment is based on the case study of a 40 megabit per second videoconferencing transmission between Switzerland and Japan, yielding a consumption of 0.2 kilowatt-hours per transmitted gigabyte for 2009, a result that supports the lowest of the existing estimates. We discuss the practical implications of our findings.

Abstract

The direct energy demand of Internet data flows can be assessed using a variety of methodological approaches (top-down, bottom-up, or hybrid/ model based) and different definitions of system boundaries. Because of this diversity, results reported in the literature differ by up to two orders of magnitude and are difficult to compare.We present a first assessment that uses a pure bottom-up approach and a system boundary that includes only transmission equipment. The assessment is based on the case study of a 40 megabit per second videoconferencing transmission between Switzerland and Japan, yielding a consumption of 0.2 kilowatt-hours per transmitted gigabyte for 2009, a result that supports the lowest of the existing estimates. We discuss the practical implications of our findings.

Statistics

Citations

19 citations in Web of Science®
20 citations in Scopus®
Google Scholar™

Altmetrics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:03 Faculty of Economics > Department of Informatics
Dewey Decimal Classification:000 Computer science, knowledge & systems
Language:English
Date:2013
Deposited On:14 Nov 2013 11:58
Last Modified:07 Dec 2017 23:42
Publisher:Wiley-Blackwell
ISSN:1088-1980
Publisher DOI:https://doi.org/10.1111/jiec.12048
Other Identification Number:merlin-id:8313

Download

Full text not available from this repository.
View at publisher