Vázquez, Miguel and SánchezÚbeda, Eugenio F. and Berzosa, Ana and Barquín, Julián (2008): Shortterm evolution of forward curves and volatility in illiquid power market.
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Abstract
We propose in this paper a model for the description of electricity spot prices, which we use to describe the dynamics of forward curves. The spot price model is based on a longterm/shortterm decomposition, where the price is thought of as made up of two factors: A longterm equilibrium level and shortterm movements around the equilibrium. We use a nonparametric approach to model the equilibrium level of power prices, and a meanreverting process with GARCH volatility to describe the dynamics of the shortterm component. Then, the model is used to derive the expression of the shortterm dynamics of the forward curve implicit in spot prices. The rationale for the approach is that information concerning forward prices is not available in most of power markets, and the direct modeling of the forward curve is a difficult task. Moreover, power derivatives are typically written on forward contracts, and usually based on average prices of forward contracts. Then, it is difficult to obtain analytical expressions for the forward curves. The model of forward prices allows for the valuation of power derivatives, as well as the calculation of the volatilities and correlations required in risk management activities. Finally, the methodology is proven in the context of the Spanish wholesale market
Item Type:  MPRA Paper 

Original Title:  Shortterm evolution of forward curves and volatility in illiquid power market 
Language:  English 
Keywords:  Forward curves;Power Markets;GARCH volatility;nonparametric regression 
Subjects:  C  Mathematical and Quantitative Methods > C3  Multiple or Simultaneous Equation Models; Multiple Variables > C32  TimeSeries Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models D  Microeconomics > D8  Information, Knowledge, and Uncertainty > D81  Criteria for DecisionMaking under Risk and Uncertainty D  Microeconomics > D8  Information, Knowledge, and Uncertainty > D84  Expectations; Speculations C  Mathematical and Quantitative Methods > C1  Econometric and Statistical Methods and Methodology: General > C14  Semiparametric and Nonparametric Methods: General C  Mathematical and Quantitative Methods > C1  Econometric and Statistical Methods and Methodology: General > C15  Statistical Simulation Methods: General 
Item ID:  8932 
Depositing User:  Miguel Vázquez 
Date Deposited:  04. Jun 2008 04:33 
Last Modified:  11. Feb 2013 10:09 
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URI:  http://mpra.ub.unimuenchen.de/id/eprint/8932 
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