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Structural versus Behavioral Remedies in the Deregulation of Electricity Markets: An Experimental Investigation Guided by Theory and Policy Concerns

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  • Silvester Van Koten
  • Andreas Ortmann

Abstract

We try to better understand the comparative advantages of structural and behavioral remedies of deregulation in electricity markets, an eminent policy issue for which the experimental evidence is scant and problematic. Specifically, we investigate theoretically and experimentally the effects on competition of introducing a forward market — considered a behavioral remedy by the European Commission. We compare this scenario with the best alternative, the structural remedy of reducing concentration by adding one more competitor by divestiture. Our study contributes to the literature by introducing more realistic cost configurations, by teasing apart competition effect and asset effect, and by investigating competitor numbers that reflect the market concentration in the European electricity industries. Our experimental data suggest that introducing a forward market has a positive effect on the aggregate supply in markets with two or three major competitors, configurations typical for the newly accessed and the old European Union member states, respectively. Introducing a forward market also increases efficiency. In contrast to previous findings, our data furthermore suggest that the effect of introducing a forward market is stronger than adding one more competitor both in markets with two, and particularly three, producers. Our data thus provides evidence that behavioral remedies may be more effective than structural remedies. Our data suggest that competition authorities are well advised, in line with EU law (European Commission, 2006a, p.11), to focus on introducing, and facilitating the proper functioning of, forward markets rather than on lowering market concentration by divestiture.

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Bibliographic Info

Paper provided by The Center for Economic Research and Graduate Education - Economic Institute, Prague in its series CERGE-EI Working Papers with number wp437.

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Date of creation: Apr 2011
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Handle: RePEc:cer:papers:wp437

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Keywords: economics experiments; market power; competition; forward markets; EU electricity market;

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Citations

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Cited by:
  1. Silvester van Koten & Andreas Ortmann, 2012. "Structural versus Behavioral Remedies in the Deregulation of Electricity Markets: An Experimental Investigation Guided by Theory and Policy Concerns," Discussion Papers 2012-36, School of Economics, The University of New South Wales.
  2. Silvester van Koten, 2014. "Do Emission Trading Schemes Facilitate Efficient Abatement Investments? An Experimental Study," CERGE-EI Working Papers wp503, The Center for Economic Research and Graduate Education - Economic Institute, Prague.
  3. Schubert, Jens, 2013. "The Impact of Forward Trading on Tacit Collusion: Experimental Evidence," MPRA Paper 43768, University Library of Munich, Germany.

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