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Strategic bidding in vertically integrated power markets with an application to the Italian electricity auctions

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  • Bosco, Bruno
  • Parisio, Lucia
  • Pelagatti, Matteo

Abstract

In this paper we apply a model of optimal bidding behavior to the Italian wholesale electricity market under three hypotheses: i) costs of generation are private knowledge, ii) firms can be vertically integrated, and iii) firms can sell part of their production in advance with bilateral contracts. We first use optimal bid functions and market data to retrieve time-varying marginal cost functions, price–cost margins and Lerner Indexes of market power for a sample of Italian companies. Then, we use estimated costs and actual equilibrium prices to evaluate the elasticity of these series to fuel price variations and estimate a possible differential impact of the dynamics of input expenditures (fuel price above all) on generation costs and final electricity prices. Our estimates suggest that the elasticities of costs and equilibrium prices with respect to oil price are virtually the same and, therefore, that the auction mechanism per se does not limit the extent to which cost increases are transferred to prices.

Suggested Citation

  • Bosco, Bruno & Parisio, Lucia & Pelagatti, Matteo, 2012. "Strategic bidding in vertically integrated power markets with an application to the Italian electricity auctions," Energy Economics, Elsevier, vol. 34(6), pages 2046-2057.
  • Handle: RePEc:eee:eneeco:v:34:y:2012:i:6:p:2046-2057 DOI: 10.1016/j.eneco.2011.11.005
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Clements, A.E. & Hurn, A.S. & Li, Z., 2016. "Strategic bidding and rebidding in electricity markets," Energy Economics, Elsevier, pages 24-36.
    2. Boom, Anette & Buehler, Stefan, 2014. "Restructuring the Electricity Industry: Vertical Structure and the Risk of Rent Extraction," Working Papers 02-2014, Copenhagen Business School, Department of Economics.
    3. Bigerna, Simona & Andrea Bollino, Carlo & Polinori, Paolo, 2015. "Marginal cost and congestion in the Italian electricity market: An indirect estimation approach," Energy Policy, Elsevier, vol. 85(C), pages 445-454.
    4. Bruno Bosco, Lucia Parisio and Matteo Pelagatti, 2016. "Price coordination in vertically integrated electricity markets. Theory and empirical evidence," The Energy Journal, International Association for Energy Economics, vol. 0(Number 1).
    5. Simona BIGERNA & Carlo Andrea BOLLINO & Maria Chiara D'ERRICO & Paolo POLINORI, 2015. "Competitive Equilibrium in the Italian Wholesale Electricity Market," Working papers of the Department of Economics - University of Perugia (IT) 0017/2015, Università di Perugia, Dipartimento Economia.
    6. Zhang, Qiong & Yang, Hangjun & Wang, Qiang & Zhang, Anming, 2014. "Market power and its determinants in the Chinese airline industry," Transportation Research Part A: Policy and Practice, Elsevier, vol. 64(C), pages 1-13.
    7. Simona Bigerna, Carlo Andrea Bollino and Paolo Polinori, 2016. "Market Power and Transmission Congestion in the Italian Electricity Market," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2).
    8. Ciarreta, Aitor & Espinosa, Maria Paz & Pizarro-Irizar, Cristina, 2017. "Has renewable energy induced competitive behavior in the Spanish electricity market?," Energy Policy, Elsevier, vol. 104(C), pages 171-182.
    9. Bigerna, Simona & Bollino, Carlo Andrea & Ciferri, Davide & Polinori, Paolo, 2017. "Renewables diffusion and contagion effect in Italian regional electricity markets: Assessment and policy implications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P1), pages 199-211.
    10. Bosco, Bruno & Parisio, Lucia & Pelagatti, Matteo, 2013. "Price-capping in partially monopolistic electricity markets with an application to Italy," Energy Policy, Elsevier, vol. 54(C), pages 257-266.

    More about this item

    Keywords

    Electricity markets; Optimal bid functions; Market power; Vertical integration;

    JEL classification:

    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities

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