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Market Power and Renewables: The Effects of Ownership Transfers

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  • Olivier Bahn, Mario Samano, and Paul Sarkis

Abstract

Adding renewable energy sources (RES) to an electricity market has an ambiguous effect on wholesale prices. The merit order effect (MoE) has a downward pressure on prices while, with market power, higher inframarginal rents will tend to increase prices. We quantify the interaction of the two effects in the Ontario electricity market. We identify the market power effect by simulating transfers of RES capacity from the fringe to larger firms: these transfers increase prices by up to 24%. We then add RES capacity and allocate it to players with varying levels of market power. Following a net expansion of RES capacity of 5% relative to total capacity, prices decrease by 30% when new capacity is assigned to the fringe, but only by 7% when assigned to the largest firm. Our findings show that the MoE is largely mitigated by market power, hence the importance of the market structure in the design of uniform incentives for RES adoption.

Suggested Citation

  • Olivier Bahn, Mario Samano, and Paul Sarkis, 2021. "Market Power and Renewables: The Effects of Ownership Transfers," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4).
    • Handle: RePEc:aen:journl:ej42-4-samano
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    Citations

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    Cited by:

    1. Xiangchu Xu & Zewei Zhan & Zengqiang Mi & Ling Ji, 2023. "An Optimized Decision Model for Electric Vehicle Aggregator Participation in the Electricity Market Based on the Stackelberg Game," Sustainability, MDPI, vol. 15(20), pages 1-26, October.
    2. Stefan Lamp & Mario Samano, 2023. "(Mis)allocation of Renewable Energy Sources," Journal of the Association of Environmental and Resource Economists, University of Chicago Press, vol. 10(1), pages 195-229.
    3. Stefano Frizzo Stefenon & Laio Oriel Seman & Viviana Cocco Mariani & Leandro dos Santos Coelho, 2023. "Aggregating Prophet and Seasonal Trend Decomposition for Time Series Forecasting of Italian Electricity Spot Prices," Energies, MDPI, vol. 16(3), pages 1-18, January.
    4. Lamp, Stefan & Samano, Mario, 2022. "Large-scale battery storage, short-term market outcomes, and arbitrage," Energy Economics, Elsevier, vol. 107(C).
    5. Filippos Ioannidis & Kyriaki Kosmidou & Kostas Andriosopoulos & Antigoni Everkiadi, 2021. "Assessment of the Target Model Implementation in the Wholesale Electricity Market of Greece," Energies, MDPI, vol. 14(19), pages 1-22, October.

    More about this item

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities
    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy

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