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Integrated hydrological, power system and economic modelling of climate impacts on electricity demand and cost

Mort Webster (), Karen Fisher-Vanden, Vijay Kumar, Richard B. Lammers and Joseph Perla
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Mort Webster: Pennsylvania State University
Vijay Kumar: Pennsylvania State University
Richard B. Lammers: University of New Hampshire
Joseph Perla: Pennsylvania State University

Nature Energy, 2022, vol. 7, issue 2, 163-169

Abstract: Abstract Impacts of climate-related water stress and temperature changes can cascade through energy systems, although models have yet to capture this compounding of effects. Here, we employ a coupled water–power–economy model to capture these important interactions in a study of the exceedance of water temperature thresholds for power generation in the western United States. We find that not all reductions in reserve electricity-generation capacity result in impacts, and that when they occur, intermittent interruptions in electricity supply at critical times of the day, week and year account for much of the economic impacts. Finally, we find that impacts may be in different locations from the original water stress. We estimate that the consumption loss can be up to 0.3% annually and the drivers identified in coupled modelling can increase the average cost of electricity by up to 3%.

Date: 2022
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DOI: 10.1038/s41560-021-00958-8

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