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Implicit collusion and individual market power in electricity markets

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  • Anderson, E.J.
  • Cau, T.D.H.
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    Abstract

    Wholesale electricity markets may not produce competitive outcomes, either as a result of the exercise of market power, or through problems of implicit collusion. In comparison with the great amount of attention paid to issues of market power, the problems of implicit collusion have not been extensively studied. In this paper, we use a coevolutionary approach to explore the effect of the price elasticity of demand, capacity and forward contracts on implicit collusion in a duopoly. We will demonstrate that implicit collusion has the most importance in market conditions under which there is an intermediate amount of market power. Thus markets which are either highly competitive or in which one or both of the two generators can exercise considerable market power, are also markets in which implicitly collusive outcomes are less likely to arise.

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    Bibliographic Info

    Article provided by Elsevier in its journal European Journal of Operational Research.

    Volume (Year): 211 (2011)
    Issue (Month): 2 (June)
    Pages: 403-414

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    Handle: RePEc:eee:ejores:v:211:y:2011:i:2:p:403-414

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    Web page: http://www.elsevier.com/locate/eor

    Related research

    Keywords: Tacit collusion Market power Electricity Coevolution;

    References

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    1. Juan Toro & Natalia Fabra, 2002. "Price Wars and Collusion in the Spanish Electricity Market," Economics Series Working Papers 136, University of Oxford, Department of Economics.
    2. von der Fehr, Nils-Henrik Morch & Harbord, David, 1993. "Spot Market Competition in the UK Electricity Industry," Economic Journal, Royal Economic Society, vol. 103(418), pages 531-46, May.
    3. Emmanuel Dechenaux & Dan Kovenock, 2005. "Tacit Collusion and Capacity Withholding in Repeated Uniform Price Auctions," UFAE and IAE Working Papers 645.05, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
    4. Benoit, Jean-Pierre & Krishna, Vijay, 1987. "Dynamic Duopoly: Prices and Quantities," Review of Economic Studies, Wiley Blackwell, vol. 54(1), pages 23-35, January.
    5. Frank Wolak, 2000. "An Empirical Analysis of the Impact of Hedge Contracts on Bidding Behavior in a Competitive Electricity Market," International Economic Journal, Taylor & Francis Journals, vol. 14(2), pages 1-39.
    6. Matti Liski & Juan-Pablo Montero, 2005. "Forward trading and collusion in oligopoly," Working Papers 0506, Massachusetts Institute of Technology, Center for Energy and Environmental Policy Research.
    7. Osborne, Martin J. & Pitchik, Carolyn, 1983. "Cartels, Profits, and Excess Capacity," Working Papers 83-09, C.V. Starr Center for Applied Economics, New York University.
    8. Carl Davidson & Raymond Deneckere, 1984. "Excess Capacity and Collusion," Discussion Papers 675, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
    9. Rafael Macatangay, 2002. "Tacit Collusion in the Frequently Repeated Multi-Unit Uniform Price Auction for Wholesale Electricity in England and Wales," European Journal of Law and Economics, Springer, vol. 13(3), pages 257-273, May.
    10. Brock, William A & Scheinkman, Jose A, 1985. "Price Setting Supergames with Capacity Constraints," Review of Economic Studies, Wiley Blackwell, vol. 52(3), pages 371-82, July.
    11. Natalia Fabra, 2003. "Tacit Collusion in Repeated Auctions: Uniform Versus Discriminatory," Journal of Industrial Economics, Wiley Blackwell, vol. 51(3), pages 271-293, 09.
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    Cited by:
    1. Kimbrough, Steven O. & Murphy, Frederic H., 2013. "Strategic bidding of offer curves: An agent-based approach to exploring supply curve equilibria," European Journal of Operational Research, Elsevier, vol. 229(1), pages 165-178.

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