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Welfare implications of capacity payments in a price-capped electricity sector: A case study of the Texas market (ERCOT)

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  • Bajo-Buenestado, Raúl

Abstract

The aim of this paper is to analyze the welfare consequences of introducing capacity compensation payments in restructured and liberalized electricity markets. For that purpose, we set up a two-stage framework in which two kinds of electricity generators, peak load and base load generators, choose their capacity investment levels first and then compete on the basis of bids in a centralized market to sell electricity to consumers. We use data from the Texas ERCOT to evaluate consumers' welfare. We find that the introduction of capacity payments has two countervailing effects. On the one hand, it increases the wholesale electricity price. On the other hand, it reduces price volatility and increases the reliability of the system. We find that capacity payments are more beneficial for consumers in a perfectly competitive market than in the presence of certain degree of market power.

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  • 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.
  • Handle: RePEc:eee:eneeco:v:64:y:2017:i:c:p:272-285
    DOI: 10.1016/j.eneco.2017.03.026
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    2. Gerard Llobet and Jorge Padilla, 2018. "Conventional Power Plants in Liberalized Electricity Markets with Renewable Entry," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3).
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    5. Fabra, Natalia, 2018. "A primer on capacity mechanisms," Energy Economics, Elsevier, vol. 75(C), pages 323-335.
    6. Perica Ilak & Lin Herenčić & Ivan Rajšl & Sara Raos & Željko Tomšić, 2021. "Equilibrium Pricing with Duality-Based Method: Approach for Market-Oriented Capacity Remuneration Mechanism," Energies, MDPI, vol. 14(3), pages 1-19, January.
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    8. Paul Simshauser & Joel Gilmore, 2020. "Is the NEM broken? Policy discontinuity and the 2017-2020 investment megacycle," Working Papers EPRG2014, Energy Policy Research Group, Cambridge Judge Business School, University of Cambridge.
    9. Brown, David P., 2018. "Capacity payment mechanisms and investment incentives in restructured electricity markets," Energy Economics, Elsevier, vol. 74(C), pages 131-142.
    10. Arcos-Vargas, A. & Nuñez, F. & Román-Collado, R., 2020. "Short-term effects of PV integration on global welfare and CO2 emissions. An application to the Iberian electricity market," Energy, Elsevier, vol. 200(C).
    11. Simshauser, Paul, 2022. "Rooftop solar PV and the peak load problem in the NEM's Queensland region," Energy Economics, Elsevier, vol. 109(C).
    12. Simshauser, Paul & Gilmore, Joel, 2022. "Climate change policy discontinuity & Australia's 2016-2021 renewable investment supercycle," Energy Policy, Elsevier, vol. 160(C).
    13. 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).
    14. 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).
    15. Mier, Mathias, 2021. "Efficient pricing of electricity revisited," Energy Economics, Elsevier, vol. 104(C).
    16. Marques, António Cardoso & Fuinhas, José Alberto & Macedo, Daniela Pereira, 2019. "The impact of feed-in and capacity policies on electricity generation from renewable energy sources in Spain," Utilities Policy, Elsevier, vol. 56(C), pages 159-168.
    17. Bajo-Buenestado, Raúl, 2021. "Operating reserve demand curve, scarcity pricing and intermittent generation: Lessons from the Texas ERCOT experience," Energy Policy, Elsevier, vol. 149(C).
    18. Simshauser, P., 2020. "Merchant utilities and boundaries of the firm: vertical integration in energy-only markets," Cambridge Working Papers in Economics 2039, Faculty of Economics, University of Cambridge.
    19. Cl'emence Alasseur & Heythem Farhat & Marcelo Saguan, 2019. "A Principal-Agent approach to Capacity Remuneration Mechanisms," Papers 1911.12623, arXiv.org, revised Sep 2020.
    20. Ruderer, Dominik & Zöttl, Gregor, 2018. "Transmission pricing and investment incentives," Utilities Policy, Elsevier, vol. 55(C), pages 14-30.
    21. Bublitz, Andreas & Keles, Dogan & Zimmermann, Florian & Fraunholz, Christoph & Fichtner, Wolf, 2018. "A survey on electricity market design: Insights from theory and real-world implementations of capacity remuneration mechanisms," Working Paper Series in Production and Energy 27, Karlsruhe Institute of Technology (KIT), Institute for Industrial Production (IIP).
    22. Michele Fiorelli & Dogan Keles & Francesco Montana & Giovanni Lorenzo Restifo & Eleonora Riva Sanseverino & Gaetano Zizzo, 2020. "Evaluation of the Administrative Phase-Out of Coal Power Plants on the Italian Electricity Market," Energies, MDPI, vol. 13(18), pages 1-24, September.
    23. Simshauser, Paul, 2021. "Vertical integration, peaking plant commitments and the role of credit quality in energy-only markets," Energy Economics, Elsevier, vol. 104(C).
    24. Bublitz, Andreas & Keles, Dogan & Zimmermann, Florian & Fraunholz, Christoph & Fichtner, Wolf, 2019. "A survey on electricity market design: Insights from theory and real-world implementations of capacity remuneration mechanisms," Energy Economics, Elsevier, vol. 80(C), pages 1059-1078.
    25. Brown, David P. & Eckert, Andrew & Silveira, Douglas, 2023. "Screening for collusion in wholesale electricity markets: A literature review," Utilities Policy, Elsevier, vol. 85(C).

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    More about this item

    Keywords

    Capacity payments; Electricity market; Welfare analysis; Energy policy; Risk analysis;
    All these keywords.

    JEL classification:

    • D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity
    • D60 - Microeconomics - - Welfare Economics - - - General
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities
    • Q41 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Demand and Supply; Prices
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy

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