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Strategic Behavior and Collusion: An Application to the Spanish Electricity Market

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Author Info
Aitor Ciarreta () (Universidad del País Vasco (Spain))
Carlos Gutierrez-Hita () (Universitat Jaume I Castellón)

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Abstract

The paper has two major contributions to the theory of repeated games. First, we build a supergame oligopoly model where firms compete in supply functions, we show how collusion sustainability is a¤ected by the presence of a convex cost function, the magnitude of both the slope of demand market, and the number of rivals. Then, we compare the results with those of the traditional Cournot reversion under the same structural characteristics. We find how depending on the number of firms and the slope of the linear demand, collusion sustainability is easier under supply function than under Cournot competition. The conclusions of the models are simulated with data from the Spanish wholesale electricity market to predict lower bounds of the discount factors.

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Publisher Info
Paper provided by University of the Basque Country - Department of Foundations of Economic Analysis II in its series DFAEII Working Papers with number 200502.

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Date of creation: 27 Jan 2005
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Handle: RePEc:ehu:dfaeii:200502

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Postal: Dpto. de Fundamentos del Análisis Económico II, Facultad de CC. Económicas y Empresariales, Universidad del País Vasco, Avda. Lehendakari Aguirre 83, 48015 Bilbao, Spain
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Related research
Keywords: collusion; repeated games; electricity market;

Find related papers by JEL classification:
L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
L51 - Industrial Organization - - Regulation and Industrial Policy - - - Economics of Regulation

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Natalia Fabra, 2003. "Tacit Collusion in Repeated Auctions: Uniform Versus Discriminatory," Journal of Industrial Economics, Blackwell Publishing, vol. 51(3), pages 271-293, 09. [Downloadable!] (restricted)
  2. Green, Richard, 1999. "The Electricity Contract Market in England and Wales," Journal of Industrial Economics, Blackwell Publishing, vol. 47(1), pages 107-24, March. [Downloadable!] (restricted)
  3. Frank A. Wolak, 2003. "Measuring Unilateral Market Power in Wholesale Electricity Markets: The California Market, 1998–2000," American Economic Review, American Economic Association, vol. 93(2), pages 425-430, May. [Downloadable!]
  4. Borenstein, Severin & Bushnell, James & Kahn, Edward & Stoft, Steven, 1995. "Market power in California electricity markets," Utilities Policy, Elsevier, vol. 5(3-4), pages 219-236. [Downloadable!] (restricted)
  5. Green, Richard, 2001. "Failing Electricity Markets: Should we Shoot the Pools?," CEPR Discussion Papers 3010, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
    Other versions:
  6. Borenstein, Severin & Bushnell, James, 1999. "An Empirical Analysis of the Potential for Market Power in California's Electricity Industry," Journal of Industrial Economics, Blackwell Publishing, vol. 47(3), pages 285-323, September. [Downloadable!] (restricted)
    Other versions:
  7. Klemperer, Paul D & Meyer, Margaret A, 1989. "Supply Function Equilibria in Oligopoly under Uncertainty," Econometrica, Econometric Society, vol. 57(6), pages 1243-77, November. [Downloadable!] (restricted)
  8. Green, Richard J, 1996. "Increasing Competition in the British Electricity Spot Market," Journal of Industrial Economics, Blackwell Publishing, vol. 44(2), pages 205-16, June. [Downloadable!] (restricted)
  9. Powell, Andrew, 1993. "Trading Forward in an Imperfect Market: The Case of Electricity in Britain," Economic Journal, Royal Economic Society, vol. 103(417), pages 444-53, March. [Downloadable!] (restricted)
  10. David Collie, 2004. "Collusion and the elasticity of demand," Economics Bulletin, Economics Bulletin, vol. 12(3), pages 1-6. [Downloadable!]
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Eva Jansson, 0. "Deregulation, property rights, and legal system," European Journal of Law and Economics, Springer, vol. 0, pages 1-25. [Downloadable!] (restricted)
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