SHARP AND SMOOTH BREAKS IN UNIT ROOT TESTING OF RENEWABLE ENERGY CONSUMPTION : THE WAY FORWARD

This study proposes a flexible unit root test that detects sharp and smooth breaks simultaneously. Most unit root tests are not general enough to capture different dynamics, such as smooth structural breaks, sharp structural breaks, state-dependent nonlinearity, or a mixture of them. Therefore, cons...

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Veröffentlicht in:The Journal of Energy and Development. - International Research Center for Energy and Economic Development (ICEED). - 44(2019), 1/2, Seite 5-40
1. Verfasser: Shahbaz, Muhammad (VerfasserIn)
Weitere Verfasser: Omay, Tolga, Roubaud, David
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:The Journal of Energy and Development
Schlagworte:Economics Applied sciences Mathematics Biological sciences Environmental studies Political science
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520 |a This study proposes a flexible unit root test that detects sharp and smooth breaks simultaneously. Most unit root tests are not general enough to capture different dynamics, such as smooth structural breaks, sharp structural breaks, state-dependent nonlinearity, or a mixture of them. Therefore, considering all these data structures in one unit root process is important and the results produced with this type of test structure do not face misspecification problems. We test nine countries’ historical renewable energy consumption covering the period of 1800-2008 with traditionally used structural break unit root tests and a newly proposed test. The newly proposed test performs better than the traditional ones. The reason is that renewable energy consumption has sharp and smooth breaks in its data-generating process that are not captured simultaneously by any other traditional unit root test. The empirical results indicate that renewable energy consumption contains stationary process in the presence of sharp and smooth structural breaks. 
540 |a Copyright © 2019 by the International Research Center for Energy and Economic Development (ICEED) 
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