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Market Power and the Power Market: Multi-unit Bidding and (In)Efficiency in Electricity Auctions

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  • Parisio, Lucia
  • Bosco, Bruno

Abstract

In this paper we apply auction theory to the modelling of competition in a multi-unit wholesale electricity market. Bidding strategies of multi-plant producers are derived and examined assuming various degrees of market concentration. Unlike previous literature, which mainly focuses on demand uncertainty, we assume both demand and cost uncertainty as well as cost differentials among the two types of generating units considered in the model, namely baseload units and peak units. Results indicate that the System Marginal Price (competitive pricing) rule provides incentives for bid shading on the part of all those generators-units who have a non-null probability of setting the market price. We also show that the extent of the bid shading is positively affected by the differential in the endowments of the baseload generation capacity of multi-plant firms. The inefficiency of the resulting allocation is also examined and some policy implications are briefly discussed. Copyright 2003 by Kluwer Academic Publishers

Suggested Citation

  • Parisio, Lucia & Bosco, Bruno, 2003. "Market Power and the Power Market: Multi-unit Bidding and (In)Efficiency in Electricity Auctions," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 10(4), pages 377-401, August.
  • Handle: RePEc:kap:itaxpf:v:10:y:2003:i:4:p:377-401
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    Citations

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    Cited by:

    1. Parisio, Lucia & Bosco, Bruno, 2008. "Electricity prices and cross-border trade: Volume and strategy effects," Energy Economics, Elsevier, vol. 30(4), pages 1760-1775, July.
    2. Estrella Alonso & Juan Tejada, 2010. "Equivalencia de Ingresos en un Duopolio Eléctrico," Latin American Journal of Economics-formerly Cuadernos de Economía, Instituto de Economía. Pontificia Universidad Católica de Chile., vol. 47(136), pages 191-215.
    3. Bruno Bosco, Lucia Parisio and Matteo Pelagatti, 2016. "Price coordination in vertically integrated electricity markets. Theory and empirical evidence," The Energy Journal, International Association for Energy Economics, vol. 0(Number 1).
    4. Silvester van Koten, 2007. "Legally Separated Joint Ownership of Bidder and Auctioneer: Illustrated by the Partial Deregulation of the EU Electricity Markets," CERGE-EI Working Papers wp346, The Center for Economic Research and Graduate Education - Economics Institute, Prague.
    5. Holmberg, Pär & Newbery, David & Ralph, Daniel, 2013. "Supply function equilibria: Step functions and continuous representations," Journal of Economic Theory, Elsevier, vol. 148(4), pages 1509-1551.
    6. 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.
    7. Natalia Fabra & Nils‐Henrik Fehr & David Harbord, 2006. "Designing electricity auctions," RAND Journal of Economics, RAND Corporation, vol. 37(1), pages 23-46, March.
    8. Dejan Trifunović & Bojan Ristić, 2013. "Multi-Unit Auctions In The Procurement Of Electricity," Economic Annals, Faculty of Economics, University of Belgrade, vol. 58(197), pages 47-78, April – J.
    9. Bruno Bosco & Lucia Parisio & Matteo Pelagatti, 2010. "Estimating Marginal Costs and Market Power in the Italian Electricity Auctions," Working Papers 20100201, Università degli Studi di Milano-Bicocca, Dipartimento di Statistica.
    10. Bruno Bosco & Lucia Parisio & Matteo Pelagatti & Fabio Baldi, 2010. "Long-run relations in european electricity prices," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 25(5), pages 805-832.
    11. Sandro Sapio, 2004. "Markets Design, Bidding Rules, and Long Memory in Electricity Prices," Revue d'Économie Industrielle, Programme National Persée, vol. 107(1), pages 151-170.
    12. Pär Holmberg & Frank Wolak, 2015. "Electricity markets: Designing auctions where suppliers have uncertain costs," Cambridge Working Papers in Economics 1541, Faculty of Economics, University of Cambridge.
    13. Bosco, Bruno & Parisio, Lucia & Pelagatti, Matteo, 2012. "Strategic bidding in vertically integrated power markets with an application to the Italian electricity auctions," Energy Economics, Elsevier, vol. 34(6), pages 2046-2057.
    14. repec:syb:wpbsba:06/2013 is not listed on IDEAS
    15. MacCormack, John & Hollis, Aidan & Zareipour, Hamidreza & Rosehart, William, 2010. "The large-scale integration of wind generation: Impacts on price, reliability and dispatchable conventional suppliers," Energy Policy, Elsevier, vol. 38(7), pages 3837-3846, July.

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