The dynamic relationship between oil prices and returns on renewable energy companies Online publication date: Tue, 13-Mar-2018
by Hanène Mejdoub; Ahmed Ghorbel
American J. of Finance and Accounting (AJFA), Vol. 5, No. 2, 2018
Abstract: The aim of this paper is to apprehend the behaviour of returns prices of renewable energy companies and their co-movement with oil prices before and after the 2008-2009 global financial crisis (GFC). Using daily data set over the time period from November 2003 to March 2016, we apply TGARCH-based-Vine copula model to examine tail dependence between oil prices (WTI) and three renewable energy indices. The results provide evidence of symmetric tail dependence for all sample, indicating the evidence of upper and lower tail dependence. However, during the crisis period, our findings reveal that the lower tail dependence for WTI and renewable energy returns prices is practically larger than the upper one. Moreover, the lower tail dependence is improved considerably in the financial crisis of 2008-2009. Therefore, the abrupt drop in oil prices (WTI) entail mainly to similar decrease in the renewable energy return prices during downturn markets.
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