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Restructuring Electricity Markets when Demand is Uncertain: Effects on Capacity Investments, Prices and Welfare

  • Anette Boom

    (Copenhagen Business School)

  • Stefan Buehler

    (University of Zurich)

We examine the effects of restructuring electricity markets on capacity investments, retail prices and welfare when demand is uncertain. We study the following market configurations: (i) integrated monopoly, (ii) integrated duopoly with wholesale trade, and (iii) separated duopoly with wholesale trade. Assuming that wholesale prices can react to changes in retail prices (but not vice versa), we find that generators install sufficient capacity to serve retail demand in each market configuration, thus avoiding blackouts. Furthermore, aggregate capacity levels and retail prices are such that the separated (integrated) duopoly with wholesale trade performs best (worst) in terms of welfare.

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Paper provided by University of Copenhagen. Department of Economics. Centre for Industrial Economics in its series CIE Discussion Papers with number 2007-09.

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Length: 24 pages
Date of creation: Aug 2007
Date of revision:
Handle: RePEc:kud:kuieci:2007-09
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  1. 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.
  2. Sheshinski, Eytan & Dreze, Jacques H, 1976. "Demand Fluctuations, Capacity Utilization, and Costs," American Economic Review, American Economic Association, vol. 66(5), pages 731-42, December.
  3. Castro-Rodriguez, Fidel & Marín, Pedro L. & Siotis, Georges, 2009. "Capacity choices in liberalised electricity markets," Energy Policy, Elsevier, vol. 37(7), pages 2574-2581, July.
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