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The Potential Impact of Cross-Ownership in Transmission: an Application to the Belgian Electricity Market

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  • Guido Pepermans
  • Bert Willems

Abstract

This paper looks at the potential effect of partial ownership on the generation and the transmission sector of electricity markets. Ideally, in liberalized electricity markets, transmission is separated from generation. The transmission sector is a natural monopoly operated by a regulated transmission firm, while the generation sector is open for competition. This paper assumes that the transmission firm is not very well regulated and behaves strategically, that there is oligoplistic competition in generation, and that one of the generators, the incumbent, owns part of the transmission firm. We then study the effect of this partial ownership in a numerical model which is calibrated on the Belgian market. The model captures two kinds of partial ownership interactions: passive ownership, where the generation firm simply cashes its share of the transmission firm’s profit without having a direct impact on its decision process, and active ownership, where the generator has a direct influence on the transmission firm’s decision process. It is shown that ownership of the network operator by the incumbent generator reduces double marginalization (= welfare improving) but also reduces entry in the generation market (= welfare decreasing).

Suggested Citation

  • Guido Pepermans & Bert Willems, 2005. "The Potential Impact of Cross-Ownership in Transmission: an Application to the Belgian Electricity Market," Working Papers of Department of Economics, Leuven ces0503, KU Leuven, Faculty of Economics and Business (FEB), Department of Economics, Leuven.
    • Handle: RePEc:ete:ceswps:ces0503
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    References listed on IDEAS

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    1. Bert Willems, 2002. "Modeling Cournot Competition in an Electricity Market with Transmission Constraints," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3), pages 95-125.
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    1. Guth, Werner & Nikiforakis, Nikos & Normann, Hans-Theo, 2007. "Vertical cross-shareholding: Theory and experimental evidence," International Journal of Industrial Organization, Elsevier, vol. 25(1), pages 69-89, February.

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    More about this item

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure
    • L43 - Industrial Organization - - Antitrust Issues and Policies - - - Legal Monopolies and Regulation or Deregulation
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities

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