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Impacts of electric supply shortage in Japan simulated by the GTAP, GTAP-E and the revised GTAP-E models

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  • Higashi, Akiko

Abstract

The growing risk of electric supply shortage in Japan has necessitated an urgent review of energy policy. As the magnitude of the impacts of electric supply shortage will be largely influenced by the development of energy substitution in industries, it is worthwhile to undertake simulations for different scenarios concerning energy substitution, to evaluate the impacts of electric supply shortage. Two models are used in the simulation: the GTAP and the GTAP-E model. The latter is an extended energy-environment version incorporating an energy substitution structure in the GTAP model. The simulation using the GTAP model considers a scenario without energy substitution, while that using the GTAP-E model considers one with energy substitution. Thus, the comparison of these simulation results indicates the effect of energy substitution on electric supply shortage. The purposes of this paper are two-fold. The first is to analyze the impacts of reduced electric power usage caused by electric supply shortage in Japan, using the GTAP and the GTAP-E models, based on the GTAP 8 database. The second is to compare the simulation results of the GTAP-E and the revised GTAP-E models, the latter of which was released in late 2012. This paper first discusses the methodology used to evaluate the impacts of electric supply shortage using the GTAP model. Second, it proposes a method to create a database for the GTAP-E and the revised GTAP-E models, by adopting a new regional and sectoral aggregation. Third, this paper compares and analyzes the simulation results of each model. The comparison of the simulation results of the GTAP and the GTAP-E models shows that the effect of energy substitution could be significant. The simulation results of the GTAP-E and the revised GTAP-E models are quite similar. Thus, it could be said that the revised GTAP-E model has improved many technical points of the original GTAP-E model, while maintaining its basic structure.

Suggested Citation

  • Higashi, Akiko, 2013. "Impacts of electric supply shortage in Japan simulated by the GTAP, GTAP-E and the revised GTAP-E models," Conference papers 332424, Purdue University, Center for Global Trade Analysis, Global Trade Analysis Project.
    • Handle: RePEc:ags:pugtwp:332424
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    References listed on IDEAS

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    1. Francois, Joseph & Bradley McDonald, 1996. "Liberalization and Capital Accumulation in the GTAP Model," GTAP Technical Papers 310, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
    2. Hertel, Thomas, 1997. "Global Trade Analysis: Modeling and applications," GTAP Books, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University, number 7685, December.
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