The need for robust, consistent methods in societal exergy accounting

Research output: Contribution to journalArticle

Abstract

Studies of societal exergy use have the common aim of tracing the flow of exergy along society, and are used to gain insights into the efficiency of energy use and linkages to economic growth. However, their methodological approaches vary greatly, with significant impacts on results. Therefore, we make a review of past studies to identify, synthesize and discuss methodological differences, to contribute to a more consistent and robust approach to societal exergy accounting. Issues that should be taken into account when making methodological options are discussed and key insights are presented: (1) For mapping of primary inputs and useful exergy categories, the inclusion of all natural resources is more consistent but it has the cost of not being able to distinguish the various energy end-uses in the production of materials. (2) To estimate primary electricity, none of the methods currently used is able to capture simultaneously the efficiency of the renewable energy sector, the environmental impact and the efficiency of energy use in society. (3) To estimate final-to-useful exergy conversion efficiencies, standard thermodynamic definitions should be used because the use of proxies fails to distinguish between increases in exergy efficiency and increases in the efficiency of providing energy services.

Details

Authors
  • Tânia Sousa
  • Paul Brockway
  • Jonathan M. Cullen
  • Sofia Henriques
  • Jack Miller
  • Andre Cabrera Serrenho
  • Tiago Domingos
Organisations
External organisations
  • University of Lisbon
  • University of Leeds
  • University of Cambridge
  • University of Sussex
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Economics
  • Other Physics Topics

Keywords

  • energy efficiency, exergy accounting, energy end-uses, societal exergy metabolism
Original languageEnglish
Pages (from-to)11-21
JournalEcological Economics
Volume141
Early online date2017
Publication statusPublished - 2017 Nov
Publication categoryResearch
Peer-reviewedYes

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Related projects

Astrid Kander, Paul Sharpe, David Stern & Sofia Henriques

2015/11/012018/12/31

Project: ResearchInternational collaboration, Interdisciplinary research

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