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Supply Function Equilibrium with Asymmetric Capacities and Constant Marginal Costs

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  • Par Holmberg

Abstract

This paper analytically derives a Supply Function Equilibrium (SFE) of a real-time electricity market with multiple firms and asymmetric production capacities. There is a unique SFE, which is piece-wise symmetric when firms have identical constant marginal costs. It is believed that some of the properties of the derived SFE are valid for real-time markets in general. FirmsÕ capacity constraints bind at different prices (i). Still, firms with non-binding capacity constraints have smooth residual demand (ii). Approximating an asymmetric real-time market with a symmetric one, tends to overestimate mark-ups for small positive imbalances and underestimate mark-ups for large positive imbalances (iii).

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Bibliographic Info

Article provided by International Association for Energy Economics in its journal The Energy Journal.

Volume (Year): Volume 28 (2007)
Issue (Month): Number 2 ()
Pages: 55-82

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Handle: RePEc:aen:journl:2007v28-02-a03

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Cited by:
  1. Genc, Talat S. & Reynolds, Stanley S., 2011. "Supply function equilibria with capacity constraints and pivotal suppliers," International Journal of Industrial Organization, Elsevier, vol. 29(4), pages 432-442, July.
  2. Holmberg, P. & Newbery, D & Ralph, D., 2008. "Supply Function Equilibria: Step Functions and Continuous Representations," Cambridge Working Papers in Economics 0863, Faculty of Economics, University of Cambridge.
  3. Holmberg, Pär & Newbery, David, 2010. "The supply function equilibrium and its policy implications for wholesale electricity auctions," Utilities Policy, Elsevier, vol. 18(4), pages 209-226, December.
  4. Albert Banal-Estañol & Augusto Rupérez-Micola, 2010. "Are agent-based simulations robust? The wholesale electricity trading case," Economics Working Papers 1214, Department of Economics and Business, Universitat Pompeu Fabra.
  5. Bolle, Friedel & Grimm, Veronika & Ockenfels, Axel & del Pozo, Xavier, 2013. "An experiment on supply function competition," European Economic Review, Elsevier, vol. 63(C), pages 170-185.
  6. Knittel, Christopher R & Metaxoglou, Konstantinos, 2008. "Diagnosing Unilateral Market Power in Electricity Reserves Market," Institute of Transportation Studies, Working Paper Series qt14q6c0mk, Institute of Transportation Studies, UC Davis.
  7. Hunt Allcott, 2012. "The Smart Grid, Entry, and Imperfect Competition in Electricity Markets," NBER Working Papers 18071, National Bureau of Economic Research, Inc.
  8. Newbery, D, 2008. "Analytic Solutions for Supply Function Equilibria: Uniqueness and Stability," Cambridge Working Papers in Economics 0848, Faculty of Economics, University of Cambridge.

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