The changing virtual water trade network of the European electric grid

Christopher M. Chini, Ashlynn S. Stillwell

Research output: Contribution to journalArticle

Abstract

In the generation of electricity, water is consumed through cooling of thermoelectric power plants and evaporation behind hydroelectric dams before flowing throughout the physical electric grid as an embedded resource. In the European electric grid, there are significant amounts of electricity resources traded between countries to balance power demands, creating a virtual water trade network. To understand the scale and burden shift of this virtual water trade, we create a resource accounting model that couples embedded water resources with international electricity trade throughout Europe at a sub-annual time-scale. Using data from the European Network of Transmission System Operators for Electricity, we identify an increase of virtual water trade from 43 million m3 to 49 million m3 between 2010 and 2017, with significant seasonal variation. We further contextualize these temporal variations of virtual water trade through an analysis of changing electricity policies in three countries (Italy, Great Britain, and Germany) and their subsequent effects on virtual water trade. In developing this virtual water network, we identify significant data gaps that lead to uncertainty and create challenges for decision-making, suggesting the need for a comprehensive data collection plan on the impact of energy on water resources across Europe.

Original languageEnglish (US)
Article number114151
JournalApplied Energy
Volume260
DOIs
StatePublished - Feb 15 2020

Keywords

  • Energy policy
  • Energy-water nexus
  • Virtual water
  • Virtual water trade

ASJC Scopus subject areas

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

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