Journal
RESOURCES POLICY
Volume 70, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.resourpol.2020.101976
Keywords
Energy security; Vector autoregressive model; Oil imports risk diversification; Risk volatility spillover
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The paper discusses how economic convenience of energy supplies can be obtained from a portfolio of partner countries to ensure energy security. By analyzing the oil imports structure of four major Asian energy importers, it is found that the composition of oil imports affects risk levels, and simulations of related shocks are conducted.
The concept of energy security has been recently extended to encompass not only the concept of physical supply availability or concerns about the lack of, but also new aspects related to price stability and affordability. Energy security is viewed, in a financial perspective, as a concept of economic convenience of energy supplies, available from a portfolio of partner countries. This paper analyzes the oil imports structure of four major Asian energy importers: China, Japan, Korea and Taiwan. We measure the total and bilateral volatility spillovers of the portfolio risk associated with the composition of the main oil suppliers, using forecast-error variance decompositions derived from a vector autoregressive model. Results show that the composition of oil import composition determines varying risk levels for given oil import growth rates and average import prices and before and after the Financial Crisis of 2008. We simulate two shocks: Covid-19 Scenario and Increased imports from KSA, showing that risk increases within a 3-15% range. As expected, spillover effects are increasing and exhibit a consistent reallocation effects, confirming that a deep shock can modify the quality composition of the variance and not only its level.
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