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La evolucion de la intensidad energetica de la industria vasca entre 1982 y 2001: un analisis de descomposicion

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  • Ansuategi, Alberto
  • Arto, Inaki

Abstract

En este artículo se utiliza una metodología de descomposición basada en índices para obtener estimaciones cuantificadas de los efectos intersectoriales e intrasectoriales que explican la reducción en un 38% de la intensidad energética de la industria vasca entre 1982 y 2001. Los resultados de la descomposición aditiva de los cambios de la intensidad energética de la industria vasca a nivel de período muestran (1) que dicha reducción se debió principalmente a cambios intrasectoriales y (2) que los cambios intersectoriales apenas contribuyeron a reducir la intensidad energética de la industria vasca. No obstante, los resultados de descomposición de serie temporal revelan (1) que la evolución de la intensidad energética de la industria vasca no fue lineal, sino que experimentó cuatro fases perfectamente diferenciadas, y (2) que la evolución del sector "siderurgia y fundición" es determinante a la hora de explicar dichas fases. Además, se destaca la necesidad de desagregar el sector "siderurgia y fundición", lo cual permitiría distinguir los cambios puramente tecnológicos del resto de los cambios intrasectoriales. PALABRAS CLAVE: Intensidad energética, análisis de descomposición ABSTRACT: In this article an index decomposition methodology is used to estimate the effect of intersectoral and intrasectoral changes in explaining the 38% reduction in industrial energy intensity in the Basque Autonomous Community from 1982 to 2001. Period-wise additive decomposition results show that (1) the decline is mainly explained by intrasectoral changes and that (2) intersectoral changes have hardly contributed to reduce the energy intensity of the Basque industrial sector. However, time-series decomposition analysis shows that (1) four different phases can be distinguished in the evolution of energy intensity of the Basque industry from 1982 to 2001 and (2) that the evolution of the "Iron and Steel" sector is determinant when explaining those phases. Moreover, the analysis stresses the necessity to disaggregate the "Iron and Steel" sector in order to be able to distinguish purely technological effects from the rest of intrasectoral changes.

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Bibliographic Info

Article provided by Spanish Association of Agricultural Economists in its journal Economia Agraria y Recursos Naturales.

Volume (Year): 04 (2004)
Issue (Month): 07 ()
Pages:

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Handle: RePEc:ags:earnsa:28729

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Keywords: Energy intensity; decomposition analysis; Resource /Energy Economics and Policy; Q40;

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