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• W2100072989 abstract "Usually, the time series of electricity prices in different markets show structural changes due to econo- mic conditions related to supply, demand or specific market rules. While some of the proposals for modeling these series are based on mean reversion models inspired by the financial literature (Philipovic, 1998), its jumps and structural changes have evidenced the existence of regimes with different means and variances (Huisman, 2003). In Colombia, these series seem to show an overall growing pattern. This article seeks to find evidence of whether this growing pattern is due to the presence of a purely deterministic trend; or if there is a unit root, implying the existence of a stochastic trend; or if the series is generated by a stationary process around various changes of level, which could have been caused by various exogenous events such as the weather phenomena of El Nino and La Nina and the resolutions of the Comision de Regulacion de Energia y Gas in the country. The results are in favor of a stationary process around multiple level changes, and highlight the importance of having information about the events that occurred in the evolution of the process." @default.
• W2100072989 created "2016-06-24" @default.
• W2100072989 creator A5002273172 @default.
• W2100072989 creator A5056987328 @default.
• W2100072989 date "2012-06-01" @default.
• W2100072989 modified "2023-09-27" @default.
• W2100072989 title "On the Existence of a Unit Root in the Time Series of Monthly Electricity Prices in Colombia" @default.
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• W2100072989 hasPublicationYear "2012" @default.
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