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Capacity payment mechanisms and investment incentives in restructured electricity markets

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  • Brown, David P.
Abstract
We investigate the impacts of capacity payment mechanisms on generation capacity investment and subsequent energy and capacity market competition. We analyze the optimal design of capacity demand parameters. The presence of price-responsive capacity demand reduces firms' abilities to exercise market power, alleviates the volatile bimodal capacity market pricing structure, reduces market concentration, and increases expected consumer surplus. While capacity payments expand investment, the first-best aggregate level of capacity is not achieved at the optimal capacity payment parameters. We demonstrate that the addition of subsidized renewable generation capacity puts downward pressure on energy prices. When renewable output is not sufficiently positively correlated with energy demand, renewable capacity expansion reduces the expected available production capacity and increases the probability of capacity scarcity for a given level of capacity demand parameters. Consequently, the regulator must expand capacity payments to achieve the same level of resource adequacy.

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  • Brown, David P., 2018. "Capacity payment mechanisms and investment incentives in restructured electricity markets," Energy Economics, Elsevier, vol. 74(C), pages 131-142.
    • Handle: RePEc:eee:eneeco:v:74:y:2018:i:c:p:131-142
    DOI: 10.1016/j.eneco.2018.05.033
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    3. S. Oliveira, Fernando & William-Rioux, Bertrand & Pierru, Axel, 2023. "Capacity expansion in liberalized electricity markets with locational pricing and renewable energy investments," Energy Economics, Elsevier, vol. 127(PB).
    4. Bialek, Sylwia & Ünel, Burçin, 2022. "Efficiency in wholesale electricity markets: On the role of externalities and subsidies," Energy Economics, Elsevier, vol. 109(C).
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    6. Cl'emence Alasseur & Heythem Farhat & Marcelo Saguan, 2019. "A Principal-Agent approach to Capacity Remuneration Mechanisms," Papers 1911.12623, arXiv.org, revised Sep 2020.
    7. Sirin, Selahattin Murat & Erten, Ibrahim, 2022. "Price spikes, temporary price caps, and welfare effects of regulatory interventions on wholesale electricity markets," Energy Policy, Elsevier, vol. 163(C).
    8. Milstein, Irena & Tishler, Asher, 2019. "On the effects of capacity payments in competitive electricity markets: Capacity adequacy, price cap, and reliability," Energy Policy, Elsevier, vol. 129(C), pages 370-385.
    9. Woo, C.K. & Milstein, I. & Tishler, A. & Zarnikau, J., 2019. "A wholesale electricity market design sans missing money and price manipulation," Energy Policy, Elsevier, vol. 134(C).
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    11. Bajo-Buenestado, Raúl, 2017. "Welfare implications of capacity payments in a price-capped electricity sector: A case study of the Texas market (ERCOT)," Energy Economics, Elsevier, vol. 64(C), pages 272-285.
    12. Ghasemi-Marzbali, Ali, 2020. "Multi-area multi-source automatic generation control in deregulated power system," Energy, Elsevier, vol. 201(C).
    13. Steinhäuser, J. Micha & Eisenack, Klaus, 2020. "How market design shapes the spatial distribution of power plant curtailment costs," Energy Policy, Elsevier, vol. 144(C).
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    16. Jayadev, Gopika & Leibowicz, Benjamin D. & Kutanoglu, Erhan, 2020. "U.S. electricity infrastructure of the future: Generation and transmission pathways through 2050," Applied Energy, Elsevier, vol. 260(C).

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    More about this item

    Keywords

    Electricity; Capacity markets; Reliability; Market power; Regulation; Renewables;
    All these keywords.

    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
    • L50 - Industrial Organization - - Regulation and Industrial Policy - - - General
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities
    • Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General

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