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Kurzfristige Auktionen erhöhen Handelsvolumen und Marktliquidität an der Strombörse

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  • Karsten Neuhoff
  • Nolan Ritter

Abstract

Increasing shares of intermittent renewables in energy consumption can be traded and integrated more efficiently when electricity markets are more flexible. Auctions can facilitate more efficient trading by increasing market liquidity and implementing a simpler market clearing mechanism to match supply and demand. Moreover, suitably designed auctions can facilitate cross-border trade, and, thus, the exploitation of flexibility from an interconnected European electricity system. Against this background, the European Power Exchange (EPEX)launched a new day-ahead auction for 15-minute products in December 2014. Prior to the implementation, 15-minute products could only be traded bilaterally in a continuous market. This article presents the results of a causal analysis that indicates that the introduction of the new auction has increased trading volumes and market liquidity. This increase in trading volume is an indicator that the auction provides benefits and potential cost reductions. Die Anteile fluktuierender erneuerbarer Stromerzeugung aus Windkraft- und Photovoltaikanlagen steigen in Deutschland und Europa. Ein effizienterer Handel dieser erneuerbarer Energien erfordert flexible Strommärkte. Hierbei können Auktionen einen effizienteren Handel ermöglichen, unter anderem durch höhere Liquidität und eine einfachere Zusammenführung von Angebot und Nachfrage. Zudem können geeignet ausgestaltete Auktionen grenzüberschreitenden Handel vereinfachen und eine effizientere Nutzung der Flexibilität des europäischen Stromverbundes ermöglichen. Vor diesem Hintergrund führte die Strombörse European Power Exchange im Dezember 2014 eine Auktion für Viertelstundenkontrakte des Folgetages in Deutschland ein. Zuvor war für diese Kontrakte an der Börse nur ein kontinuierlicher Handel möglich. Der vorliegende Beitrag präsentiert die Ergebnisse einer Analyse, wonach diese neue Auktion das Handelsvolumen und die Marktliquidität erhöht hat. Dieses sind Indikatoren für die Vorteilhaftigkeit dieser Auktion und deuten auf mögliche Kostensenkungen hin.

Suggested Citation

  • Karsten Neuhoff & Nolan Ritter, 2016. "Kurzfristige Auktionen erhöhen Handelsvolumen und Marktliquidität an der Strombörse," DIW Wochenbericht, DIW Berlin, German Institute for Economic Research, vol. 83(41), pages 987-993.
  • Handle: RePEc:diw:diwwob:83-41-3
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    More about this item

    Keywords

    Auctions; electricity market; quantile regression;
    All these keywords.

    JEL classification:

    • C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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