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Time-varying convergence in European electricity spot markets and their association with carbon and fuel prices

de Menezes, L. M., Houllier, M. & Tamvakis, M. (2016). Time-varying convergence in European electricity spot markets and their association with carbon and fuel prices. Energy Policy, 88, pp. 613-627. doi: 10.1016/j.enpol.2015.09.008


Long-run dynamics of electricity prices are expected to reflect fuel price developments, since fuels generally account for a large share in the cost of generation. As an integrated European market for electricity develops, wholesale electricity prices should be converging as a result of market coupling and increased interconnectivity. Electricity mixes are also changing, spurred by a drive to significantly in-crease the share of renewables. Consequently, the electricity wholesale price dynamics are evolving, and the fuel-electricity price nexus that has been described in the literature is likely to reflect this evolution. This study investigates associations between spot prices from the British, French and Nordpool markets with those in connected electricity markets and fuel input prices, from December 2005 to October 2013. In order to assess the time-varying dynamics of electricity spot price series, localized autocorrelation functions are used. Electricity spot prices in the three markets are found to have stationary and non-stationary periods. When a trend in spot prices is observed, it is likely to reflect the trend in fuel prices. Cointegration analysis is then used to assess co-movement between electricity spot prices and fuel inputs to generation. The results show that British electricity spot prices are associated with fuel prices and not with price developments in connected markets, while the opposite is observed in the French and Nordpool day-ahead markets.

Publication Type: Article
Additional Information: © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Publisher Keywords: Energy markets; Electricity markets; Price convergence; Cointegration; Localized autocorrelation function
Subjects: H Social Sciences > HD Industries. Land use. Labor
Departments: Bayes Business School > Finance
Bayes Business School > Management
Text - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

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