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http://dx.doi.org/10.5855/ENERGY.2014.23.2.093

Analysis of energy security by the diversity indices: A case study of South Korea  

Jang, Yong-Chul (Green School(Graduate School of Energy and Environment), Korea University)
Bang, Ki-Yual (Green School(Graduate School of Energy and Environment), Korea University)
Lee, Kwan-Young (Green School(Graduate School of Energy and Environment), Korea University)
Kim, Kyung Nam (Green School(Graduate School of Energy and Environment), Korea University)
Publication Information
Journal of Energy Engineering / v.23, no.2, 2014 , pp. 93-101 More about this Journal
Abstract
How to determine the extent of national energy security? In this paper, we estimate it by comparative analysis of South Korea and other OECD countries in terms of energy diversity (fuel diversity). Energy security consists of 4 key factors such as availability, accessibility, acceptability, affordability. Especially the importance of accessibility can grow as local imbalance of supply and demand increases. As a proxy of the accessibility, fuel diversity can be a significant indicator to estimate a measure of energy security. In this paper, we use Shannon-Wiener index to measure energy diversity. If fuel diversity increases, the stability of energy security also should increase, because of the smoothing effect to lessen dependence on key energy sources. In 2012 Korean growth rate of H-index (energy diversity) is 18.38%, which is higher than other OECD countries. However, Korean H-index itself is 1.93, lesser than other countries. Shift from oil to coals/gas within fossil fuels has more impact on H-index than weight transition from fossil fuels to renewable energies in Korea. We conclude that more renewable energy is an effective solution to achieve higher energy diversity and ultimately higher energy security as the same as the German case.
Keywords
Energy security; Energy mix; Diversity index;
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