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The long-term trends on the electricity markets: Comparison of empirical mode and wavelet decompositions

Dmitriy Afanasyev and Elena A. Fedorova

Energy Economics, 2016, vol. 56, issue C, 432-442

Abstract: This paper proposes an improved approach to electricity prices trend-cyclical component filtering, which is based on the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN). A combined criterion for determining the modes to be included into the trend component is introduced. The performance of the proposed approach is compared with the ordinary empirical mode decomposition (EMD), as well as with the method of wavelet-decomposition well-known in the energy economics literature. We test it on four day-ahead electricity markets: the Europe-Ural and the Siberia price zones of the Russian ATS exchange, the PJM exchange of the USA and the APX exchange of the United Kingdom. Our results show that the proposed approach based on CEEMDAN and the combined criterion outperforms the standard EMD on all the four electricity markets, and on two of the studied markets (PJM, APX) it outperforms the wavelet-smoothing, while on the other two (ATS Europe-Ural and Siberia) it performs at least not worse than the wavelet-smoothing. At the same time, the proposed approach does not require a prior choice of the smoothing parameter, as in the case of the wavelet-decomposition, and demonstrates a certain degree of versatility on the studied markets.

Keywords: Electricity market; Trend-filtering; Long-term seasonal component; Empirical mode decomposition; Wavelet-decomposition (search for similar items in EconPapers)
JEL-codes: C13 C63 C90 L94 Q40 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
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Persistent link: https://EconPapers.repec.org/RePEc:eee:eneeco:v:56:y:2016:i:c:p:432-442

DOI: 10.1016/j.eneco.2016.04.009

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