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Optimal Price Design in the Wholesale Electricity Market

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  • Simona Bigerna and Carlo Andrea Bollino

Abstract

In this paper, we construct an optimal price design mechanism to determine the equilibrium in the day-ahead electricity market, specifically aimed at solving the uncomfortable conflict between conventional thermal sources (CTS) and renewable energy sources (RES). We find that the actual hourly market design is inadequate to achieve an efficient solution in the presence of a large and increasing share of RES. It is not conducive to catalyzing the correct price signal for future investments and does not take into account welfare considerations. Our proposal for a new market design is based on three main pillars. We state pro-competitive incentives to CTS participation in the market. We take into full account the opportunity cost of RES for society and propose correct price signals on the demand side through an optimal Ramsey pricing scheme. We show an empirical application to the Italian electricity market, using empirical measures of LCOE for RES and empirical estimation of heterogeneous buyers' behavior. The results show improvement in efficiency and welfare in the Italian electricity market with respect to the existing zonal market prices for suppliers and uniform price for buyers.

Suggested Citation

  • Simona Bigerna and Carlo Andrea Bollino, 2016. "Optimal Price Design in the Wholesale Electricity Market," The Energy Journal, International Association for Energy Economics, vol. 0(Bollino-M).
    • Handle: RePEc:aen:journl:ej37-si2-bollino
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    References listed on IDEAS

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    1. Simona Bigerna, Carlo Andrea Bollino and Paolo Polinori, 2016. "Renewable Energy and Market Power in the Italian Electricity Market," The Energy Journal, International Association for Energy Economics, vol. 0(Bollino-M).
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    2. Kraan, O. & Kramer, G.J. & Nikolic, I., 2018. "Investment in the future electricity system - An agent-based modelling approach," Energy, Elsevier, vol. 151(C), pages 569-580.
    3. Keppler, Jan Horst & Quemin, Simon & Saguan, Marcelo, 2022. "Why the sustainable provision of low-carbon electricity needs hybrid markets," Energy Policy, Elsevier, vol. 171(C).
    4. Bjørndal, Endre & Bjørndal, Mette Helene & Coniglio, Stefano & Körner, Marc-Fabian & Leinauer, Christina & Weibelzahl, Martin, 2023. "Energy storage operation and electricity market design: On the market power of monopolistic storage operators," European Journal of Operational Research, Elsevier, vol. 307(2), pages 887-909.
    5. Angelica Gianfreda & Lucia Parisio & Matteo Pelagatti, 2016. "The Impact of RES in the Italian Day-Ahead and Balancing Markets," The Energy Journal, , vol. 37(2_suppl), pages 161-184, June.
    6. Ignacio Mauleón, 2020. "Economic Issues in Deep Low-Carbon Energy Systems," Energies, MDPI, vol. 13(16), pages 1-32, August.
    7. Sirin, Selahattin Murat & Camadan, Ercument & Erten, Ibrahim Etem & Zhang, Alex Hongliang, 2023. "Market failure or politics? Understanding the motives behind regulatory actions to address surging electricity prices," Energy Policy, Elsevier, vol. 180(C).

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