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Market power in Norwegian electricity market: Are the transmission bottlenecks truly exogenous?

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  • Faisal Mehmood Mirza, Olvar Bergland

Abstract

In this paper, we test whether producers in the southern Norway price zone utilize information on available transmission capacity to induce transmission congestion in their price zone to exercise market power or not. Endogeneity results for import congestion suggest that congestion is endogenous during late night and morning hours implying that producers in southern Norway restrict their output to induce transmission congestion into their price zone. We find an average markup of about 19.5 percent above the marginal cost during these hours. These results point that NordPool's policy of making transmission capacity information public to ensure market transparency is not welfare maximizing as strategic producers can use this information to anticipate and induce transmission congestion into their price zone for driving prices away from the competitive levels.

Suggested Citation

  • Faisal Mehmood Mirza, Olvar Bergland, 2015. "Market power in Norwegian electricity market: Are the transmission bottlenecks truly exogenous?," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4).
    • Handle: RePEc:aen:journl:ej36-4-berglan
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    1. Severin Borenstein & James. Bushnell & Steven Stoft, 2000. "The Competitive Effects of Transmission Capacity in A Deregulated Electricity Industry," RAND Journal of Economics, The RAND Corporation, vol. 31(2), pages 294-325, Summer.
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    1. Helgesen, Per Ivar & Tomasgard, Asgeir, 2018. "An equilibrium market power model for power markets and tradable green certificates, including Kirchhoff's Laws and Nash-Cournot competition," Energy Economics, Elsevier, vol. 70(C), pages 270-288.
    2. Sara Fogelberg & Ewa Lazarczyk, 2019. "Strategic Withholding through Production Failures," The Energy Journal, , vol. 40(5), pages 247-266, September.
    3. van Beesten, E. Ruben & Hulshof, Daan, 2023. "Economic incentives for capacity reductions on interconnectors in the day-ahead market," Applied Energy, Elsevier, vol. 341(C).

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