Long-term memory in electricity prices: Czech market evidence

0427660 - ÚTIA 2015 RIV CZ eng J - Journal Article
Krištoufek, Ladislav - Luňáčková, P.
Long-term memory in electricity prices: Czech market evidence.
Finance a úvěr-Czech Journal of Economics and Finance. Roč. 63, č. 5 (2013), s. 407-424. ISSN 0015-1920. E-ISSN 0015-1920
R&D Projects: GA ČR GA402/09/0965
Grant - others:GA ČR(CZ) GAP402/11/0948
Program: GA
Institutional support: RVO:67985556
Keywords : electricity * long-term memory
Subject RIV: AH - Economics
Impact factor: 0.358, year: 2013
http://library.utia.cas.cz/separaty/2014/E/kristoufek-0427660.pdf

We analyze the long-term memory properties of hourly prices of electricity in the Czech Republic between 2009 and 2012. Various statistical properties of these prices are studied, and as the dynamics of electricity prices is dominated by cycles—in particular intraday and daily—we opt for detrended fluctuation analysis, which is well suited to such specific series. We find that electricity prices are non-stationary but strongly mean-reverting, which distinguishes them from prices of other financial assets, which are usually charac- terized as unit root series. Such behavior is attributed to specific features of electricity, in particular its non-storability. Additionally, we argue that the rapid mean-reversion is due to the principles of electricity spot prices. These properties are shown to be stable across all the years studied.
Permanent Link: http://hdl.handle.net/11104/0233196