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A Unique Competitive Equilibrium on Interdependent Spot Electricity and Reserve Capacity Markets

Author

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  • Richter, Jan

    (Energiewirtschaftliches Institut an der Universitaet zu Koeln)

Abstract

This paper studies the interdependency of a spot electricity market and a market for incremental reserve capacity in a competitive setting, where a continuum of firms supplies both markets. It is proved that a simultaneous competitive equilibrium on both markets exists in the stylised model used. It turns out that all market equilibria are characterised essentially by a u-shaped reserve capacity market bidding function and that the set of suppliers declaring reserve capacity constitutes an interval. If the supplier’s marginal cost curve is convex, then a unique equilibrium exists.

Suggested Citation

  • Richter, Jan, 2011. "A Unique Competitive Equilibrium on Interdependent Spot Electricity and Reserve Capacity Markets," EWI Working Papers 2011-9, Energiewirtschaftliches Institut an der Universitaet zu Koeln (EWI).
    • Handle: RePEc:ris:ewikln:2011_009
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    References listed on IDEAS

    as
    1. Anna Creti & Natalia Fabra, 2003. "Capacity Markets for Electricity," Industrial Organization 0309002, University Library of Munich, Germany, revised 26 Nov 2003.
    2. Just, Sebastian & Weber, Christoph, 2008. "Pricing of reserves: Valuing system reserve capacity against spot prices in electricity markets," Energy Economics, Elsevier, vol. 30(6), pages 3198-3221, November.
    3. 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 929-953, October.
    4. Sebastian Just, 2011. "Appropriate contract durations in the German markets for on-line reserve capacity," Journal of Regulatory Economics, Springer, vol. 39(2), pages 194-220, April.
    5. Ali Hortaçsu & Steven L. Puller, 2008. "Understanding strategic bidding in multi‐unit auctions: a case study of the Texas electricity spot market," RAND Journal of Economics, RAND Corporation, vol. 39(1), pages 86-114, March.
    6. Felix Müsgens, 2006. "Quantifying Market Power In The German Wholesale Electricity Market Using A Dynamic Multi‐Regional Dispatch Model," Journal of Industrial Economics, Wiley Blackwell, vol. 54(4), pages 471-498, December.
    7. Chao, Hung-Po & Wilson, Robert, 2002. "Multi-dimensional Procurement Auctions for Power Reserves: Robust Incentive-Compatible Scoring and Settlement Rules," Journal of Regulatory Economics, Springer, vol. 22(2), pages 161-183, September.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    Competitive Equilibrium; Electricity; Reserve Capacity; Simultaneous Equilibrium;
    All these keywords.

    JEL classification:

    • D41 - Microeconomics - - Market Structure, Pricing, and Design - - - Perfect Competition
    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities

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