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Investment decisions in Liberalized Electricity Markets: A framework of Peak Load Pricing with strategic firms

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  • Gregor Zoettl

Abstract

In this article we analyze firms investment incentives in liberalized electricity markets. Since electricity is economically non storable, it is optimal for firms to invest in a differentiated portfolio of technologies in order to serve strongly fluctuating demand. Prior to the Liberalization of electricity markets, for regulated monopolists, optimal investment and pricing strategies haven been analyzed in the peak load pricing literature (compare Crew and Kleindorfer (1986)). In restructured electricity markets regulated monopolistic generators have often been replaced by competing and potentially strategic firms. This article aims to respond to the changed reality and model investment decisions of strategic firms in those markets. We derive equilibrium investment for strategic firms and compare to the benchmark cases of perfect competition and monopoly outcomes. We find that strategic firms have an incentive to overinvest in base-load technologies but choose total capacities too low from a welfare point of view. By fitting the framework to a specific electricity market (Germany) we are able to empirically analyze Investment choices of strategic firms, and quantify the potential for market power and its impact on generation portfolios in restructured electricity markets in the long run.

Suggested Citation

  • Gregor Zoettl, 2008. "Investment decisions in Liberalized Electricity Markets: A framework of Peak Load Pricing with strategic firms," Working Paper Series in Economics 38, University of Cologne, Department of Economics.
    • Handle: RePEc:kls:series:0038
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    References listed on IDEAS

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    1. Paul Joskow & Jean Tirole, 2007. "Reliability and competitive electricity markets," RAND Journal of Economics, RAND Corporation, vol. 38(1), pages 60-84, March.
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    6. Veronika Grimm & Gregor Zoettl, 2006. "Capacity Choice under Uncertainty: The Impact of Market Structure," Working Paper Series in Economics 23, University of Cologne, Department of Economics.
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    Cited by:

    1. Sakellaris, Kostis, 2010. "Modeling Electricity Markets as Two-Stage Capacity Constrained Price Competition Games under Uncertainty," MPRA Paper 23317, University Library of Munich, Germany.
    2. Dietrich, Kristin & Leuthold, Florian & Weigt, Hannes, 2009. "Will the Market Get it Right? The Placing of New Power Plants in Germany," MPRA Paper 65653, University Library of Munich, Germany.
    3. Weigt, Hannes, 2009. "A Review of Liberalization and Modeling of Electricity Markets," MPRA Paper 65651, University Library of Munich, Germany.
    4. Frederic Murphy & Yves Smeers, 2010. "On the Impact of Forward Markets on Investments in Oligopolistic Markets with Reference to Electricity," Operations Research, INFORMS, vol. 58(3), pages 515-528, June.

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    Keywords

    Investment Decisions; Technology Choice; Restructured Electricity Markets; Peak Load Pricing; Strategic Firms;
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