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Supply Function Competition in the Spanish Wholesale Electricity Market

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  • Aitor Ciarreta
  • Maria Paz Espinosa

Abstract

We represent the Spanish wholesale market as a supply function com­petition model. Theoretically, the larger generators’ supply curves for each plant should be to the left of the supply curves of plants owned by smaller generators. We test this prediction for fuel plants using data from the Spanish Market Op­erator (OMEL) from January 2002 to December 2005. Our empirical results are consistent with the model predictions and suggest that the supply function model better fits data than a discrete-bid auction model since large generators behave as price-makers irrespective whether they are the marginal firms at the auction.

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Bibliographic Info

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

Volume (Year): Volume 31 (2010)
Issue (Month): Number 4 ()
Pages: 137-158

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Handle: RePEc:aen:journl:2010v31-04-a06

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References

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  1. Green, Richard, 2001. "Failing Electricity Markets: Should we Shoot the Pools?," CEPR Discussion Papers 3010, C.E.P.R. Discussion Papers.
  2. Laussel, D., 1990. "Strategic Commercial Policy Revisited: A Supply Function Equilibrium Model," G.R.E.Q.A.M. 90a05, Universite Aix-Marseille III.
  3. Klemperer, Paul D & Meyer, Margaret A, 1989. "Supply Function Equilibria in Oligopoly under Uncertainty," Econometrica, Econometric Society, vol. 57(6), pages 1243-77, November.
  4. Green, Richard J, 1996. "Increasing Competition in the British Electricity Spot Market," Journal of Industrial Economics, Wiley Blackwell, vol. 44(2), pages 205-16, June.
  5. Bolle, Friedel, 1992. "Supply function equilibria and the danger of tacit collusion : The case of spot markets for electricity," Energy Economics, Elsevier, vol. 14(2), pages 94-102, April.
  6. Ferreira, E. & Stute, W., 2004. "Testing for Differences Between Conditional Means in a Time Series Context," Journal of the American Statistical Association, American Statistical Association, vol. 99, pages 169-174, January.
  7. Professor Paul Klemperer, 2000. "What Really Matters in Auction Design," Microeconomics 0004008, EconWPA.
  8. Spear, Stephen E., 2003. "The electricity market game," Journal of Economic Theory, Elsevier, vol. 109(2), pages 300-323, April.
  9. Green, Richard & Newbery, David M G, 1991. "Competition in the British Electricity Spot Market," CEPR Discussion Papers 557, C.E.P.R. Discussion Papers.
  10. Severin Borenstein & James B. Bushnell & Frank A. Wolak, 2002. "Measuring Market Inefficiencies in California's Restructured Wholesale Electricity Market," American Economic Review, American Economic Association, vol. 92(5), pages 1376-1405, December.
  11. David Harbord & Natalia Fabra & Nils-Henrik von der Fehr, 2002. "Modeling Electricity Auctions," Game Theory and Information 0206001, EconWPA.
  12. Green, Richard, 1999. "The Electricity Contract Market in England and Wales," Journal of Industrial Economics, Wiley Blackwell, vol. 47(1), pages 107-24, March.
  13. Newbery, David M., 2002. "Problems of liberalising the electricity industry," European Economic Review, Elsevier, vol. 46(4-5), pages 919-927, May.
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Cited by:
  1. Paulo Cesar Coutinho & Andre Rossi de Oliveira, 2013. "Trading Forward in the Brazilian Electricity Market," International Journal of Energy Economics and Policy, Econjournals, vol. 3(3), pages 272-287.
  2. Ciarreta, Aitor & Espinosa, María Paz, 2012. "The impact of regulation on pricing behavior in the Spanish electricity market (2002–2005)," Energy Economics, Elsevier, vol. 34(6), pages 2039-2045.
  3. Kamiński, Jacek, 2014. "A blocked takeover in the Polish power sector: A model-based analysis," Energy Policy, Elsevier, vol. 66(C), pages 42-52.
  4. Moutinho, Victor & Moreira, António C. & Mota, Jorge, 2014. "Do regulatory mechanisms promote competition and mitigate market power? Evidence from Spanish electricity market," Energy Policy, Elsevier, vol. 68(C), pages 403-412.
  5. Espinosa Alejos, María Paz, 2013. "Understanding Tariff Deficit and its Challenges," DFAEII Working Papers DFAEII;2013-01, University of the Basque Country - Department of Foundations of Economic Analysis II.

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