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How to Determine whether Regional Markets are Integrated? Theory and Evidence from European Electricity Markets

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  • Gebhardt, Georg
  • Höffler, Felix

Abstract

Prices may di er between regional markets if transport capacities are limited. We develop a new approach to determine to which extent such di erences stem from limited participation in cross-border trader rather than from bottlenecks. We derive a theoretical integration benchmark for the typical case where transportation markets clear before the product markets, using Grossman's (1976) notion of a rational expectations equilibrium. We compare the benchmark to data from European electricity markets. The data reject the integration hypothesis: Capacity prices contain too little information about spot price di erential; this indicates that well informed traders do not engage in cross-border trade.

Suggested Citation

  • Gebhardt, Georg & Höffler, Felix, 2008. "How to Determine whether Regional Markets are Integrated? Theory and Evidence from European Electricity Markets," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 236, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
    • Handle: RePEc:trf:wpaper:236
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    References listed on IDEAS

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    1. Benjamin F. Hobbs & Fieke A.M. Rijkers & Maroeska G. Boots, 2005. "The More Cooperation, The More Competition? A Cournot Analysis of the Benefits of Electric Market Coupling," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4), pages 69-98.
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    More about this item

    Keywords

    Market integration; electricity markets; interconnector; competition policy; rational expectations equilibrium;
    All these keywords.

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • D84 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Expectations; Speculations
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities

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