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Estimating the Volatility of Electricity Prices: The Case of the England and Wales Wholesale Electricity Market

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  • Sherzod N. Tashpulatov

Abstract

Price fluctuations that partially comove with demand are a specific feature inherent to liberalized electricity markets. The regulatory authority in Great Britain, however, believed that sometimes electricity prices were significantly higher than what was expected and, therefore, introduced price-cap regulation and divestment series. In this study, I analyze how the introduced institutional changes and regulatory reforms affected the dynamics of daily electricity prices in the England and Wales wholesale electricity market during 1990-2001. The research finds that the introduction of price-cap regulation did achieve the goal of lowering the price level at the cost of higher price volatility. Later, the first series of divestments is found to be successful in lowering price volatility, which however happens at the cost of a higher price level. Finally, the study also documents that the second series of divestment was more successful in lowering both the price level and volatility.

Suggested Citation

  • Sherzod N. Tashpulatov, 2011. "Estimating the Volatility of Electricity Prices: The Case of the England and Wales Wholesale Electricity Market," CERGE-EI Working Papers wp439, The Center for Economic Research and Graduate Education - Economics Institute, Prague.
    • Handle: RePEc:cer:papers:wp439
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    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • L50 - Industrial Organization - - Regulation and Industrial Policy - - - General
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities

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