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Market Power in Price-Regulated Power Industries

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  • M. Soledad Arellano

    ()

  • Pablo Serra

    ()

Abstract

This paper analyzes market power in price-regulated power industries. We derive market equilibrium under different assumptions (perfect competition, monopoly, Cournot, etc.), with and without free entry. We show that when peak-load pricing is used, producers can exercise market power by increasing the share of peaking technology in the generation portfolio, compared to the welfare-maximizing configuration. In this framework natural measure of market power is the length of time that peaking technology plants operate beyond their operational time in the welfare maximizing solution. We show that when there is free entry with an exogenous fixed entry cost that is later sunk, more intense competition results in higher welfare but fewer firms.

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Bibliographic Info

Paper provided by Centro de Economía Aplicada, Universidad de Chile in its series Documentos de Trabajo with number 208.

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Date of creation: 2005
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Handle: RePEc:edj:ceauch:208

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  1. Bergman, Lars & Andersson, Bo, 1995. "Market Structure and the Price of Electricity: An ex ante Analysis of the deregulated Swedish Electricity Market," Working Paper Series in Economics and Finance 47, Stockholm School of Economics.
  2. Soledad Arellano, 2004. "Market Power in Mixed Hydro-Thermal Electric," Documentos de Trabajo 187, Centro de Economía Aplicada, Universidad de Chile.
  3. Von der Fehr, N.H.M. & Harbord, D., 1992. "Spot Market Competition in the UK Electricity Industry," Memorandum 09/1992, Oslo University, Department of Economics.
  4. Bresnahan, Timothy F., 1989. "Empirical studies of industries with market power," Handbook of Industrial Organization, in: R. Schmalensee & R. Willig (ed.), Handbook of Industrial Organization, edition 1, volume 2, chapter 17, pages 1011-1057 Elsevier.
  5. Bo Andersson & Lars Bergman, 1995. "Market Structure and the Price of Electricity: An Ex Ante Analysis of the Deregulated Swedish Electricity Market," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2), pages 97-110.
  6. Green, Richard J & Newbery, David M, 1992. "Competition in the British Electricity Spot Market," Journal of Political Economy, University of Chicago Press, vol. 100(5), pages 929-53, October.
  7. M. Soledad Arellano, 2004. "Market Power in Mixed Hydro-Thermal Electric Systems," Econometric Society 2004 Latin American Meetings 211, Econometric Society.
  8. 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.
  9. Paul L. Joskow, 1976. "Contributions to the Theory of Marginal Cost Pricing," Bell Journal of Economics, The RAND Corporation, vol. 7(1), pages 197-206, Spring.
  10. Klemperer, Paul D & Meyer, Margaret A, 1989. "Supply Function Equilibria in Oligopoly under Uncertainty," Econometrica, Econometric Society, vol. 57(6), pages 1243-77, November.
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Cited by:
  1. M. Soledad Arellano & Pablo Serra, 2005. "The Competitive Role of the Transmisión System in Price-regulated Power Industries," Documentos de Trabajo 214, Centro de Economía Aplicada, Universidad de Chile.
  2. Augusto Rupérez-Micola & Albert Banal-Estañol, 2007. "Composition of electricity generation portfolios, pivotal dynamics and market prices," Economics Working Papers 1083, Department of Economics and Business, Universitat Pompeu Fabra.

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