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Does Daylight Saving Save Electricity? A Meta-Analysis

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  • Tomas Havranek, Dominik Herman, and Zuzana Irsova

Abstract

The original rationale for adopting daylight saving time (DST) was energy savings. Modern research studies, however, question the magnitude and even direction of the effect of DST on electricity consumption. Representing the first meta-analysis in this literature, we collect 162 estimates from 44 studies and find that the mean reported estimate indicates slight electricity savings: 0.34% during the days when DST applies. The literature is not affected by publication bias, but the results vary systematically depending on the exact data and methodology applied. Using Bayesian model averaging we identify the most important factors driving the heterogeneity of the reported effects: data frequency, estimation technique (simulation vs. regression), and, importantly, the latitude of the country considered. Electricity savings are larger for countries farther away from the equator, while subtropical regions consume more electricity because of DST.

Suggested Citation

  • Tomas Havranek, Dominik Herman, and Zuzana Irsova, 2018. "Does Daylight Saving Save Electricity? A Meta-Analysis," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2).
  • Handle: RePEc:aen:journl:ej39-2-irsova
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    Cited by:

    1. Fadoua Chiba & Sebastien Rouillon, 2018. "Intermittent electric generation technologies and smart meters: substitutes or complements," Cahiers du GREThA 2018-11, Groupe de Recherche en Economie Théorique et Appliquée.

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    JEL classification:

    • F0 - International Economics - - General

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