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Electricity Intensity of Internet Data Transmission: Untangling the Estimates

Aslan, Joshua, Mayers, K, Koomey, JG and France, Christopher (2017) Electricity Intensity of Internet Data Transmission: Untangling the Estimates Journal of Industrial Ecology.

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Abstract

In order to understand the electricity use of Internet services, it is important to have accurate estimates for the average electricity intensity of transmitting data through the Internet (measured as kilowatt-hours per gigabyte [kWh/GB]). This study identifies representative estimates for the average electricity intensity of fixed-line Internet transmission networks over time and suggests criteria for making accurate estimates in the future. Differences in system boundary, assumptions used, and year to which the data apply significantly affect such estimates. Surprisingly, methodology used is not a major source of error, as has been suggested in the past. This article derives criteria to identify accurate estimates over time and provides a new estimate of 0.06 kWh/GB for 2015. By retroactively applying our criteria to existing studies, we were able to determine that the electricity intensity of data transmission (core and fixed-line access networks) has decreased by half approximately every 2 years since 2000 (for developed countries), a rate of change comparable to that found in the efficiency of computing more generally.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Centre for Environmental Strategy
Authors :
NameEmailORCID
Aslan, Joshuaj.aslan@surrey.ac.ukUNSPECIFIED
Mayers, KUNSPECIFIEDUNSPECIFIED
Koomey, JGUNSPECIFIEDUNSPECIFIED
France, ChristopherC.France@surrey.ac.ukUNSPECIFIED
Date : 1 August 2017
Identification Number : 10.1111/jiec.12630
Copyright Disclaimer : This is the peer reviewed version of the following article: Aslan, J., Mayers, K., Koomey, J. G. and France, C. (2017), Electricity Intensity of Internet Data Transmission: Untangling the Estimates. Journal of Industrial Ecology. doi:10.1111/jiec.12630, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/jiec.12630/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving
Depositing User : Melanie Hughes
Date Deposited : 11 Oct 2017 15:18
Last Modified : 11 Oct 2017 15:18
URI: http://epubs.surrey.ac.uk/id/eprint/842520

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