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Redesigning Automated Market Power Mitigation in Electricity Markets

Author

Listed:
  • Jacqueline Adelowo
  • Moritz Bohland

Abstract

Electricity markets are prone to the abuse of market power. Several US markets employ algorithms to monitor and mitigate market power abuse in real time. The performance of automated mitigation procedures is contingent on precise estimates of firms’ marginal production costs. Currently, marginal cost are inferred from the past offers of a plant. We present new estimation approaches and compare them to the currently applied benchmark method. We test the performance of all the approaches on auction data from the Iberian power market. The results show that our novel approaches outperform the benchmark approach significantly, reducing the mean absolute estimation error from 11.53 €/MWh to 2.77 €/MWh for our most precise alternative approach. Applying this result to a market mitigation simulation we find sizeable overall welfare gains and welfare transfers from supplier to buyer surplus. Our research contributes to accurate monitoring of market power and improved automated mitigation. Although we focus on power markets, our findings are applicable to monitoring of renewable energy tenders or market power surveillance in rail and air traffic.

Suggested Citation

  • Jacqueline Adelowo & Moritz Bohland, 2022. "Redesigning Automated Market Power Mitigation in Electricity Markets," ifo Working Paper Series 387, ifo Institute - Leibniz Institute for Economic Research at the University of Munich.
    • Handle: RePEc:ces:ifowps:_387
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    References listed on IDEAS

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    Cited by:

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    2. Brown, David P. & Olmstead, Derek E. H. & Shaffer, Blake, 2024. "Electricity Market Design with Increasing Renewable Generation: Lessons From Alberta," Working Papers 2024-3, University of Alberta, Department of Economics.
    3. Brown, David P. & Eckert, Andrew & Silveira, Douglas, 2023. "Screening for Collusion in Wholesale Electricity Markets: A Review of the Literature," Working Papers 2023-7, University of Alberta, Department of Economics.

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    More about this item

    Keywords

    Regulation; automated mitigation procedure; best-response pricing; market power; Electricity; mark-up;
    All these keywords.

    JEL classification:

    • D22 - Microeconomics - - Production and Organizations - - - Firm Behavior: Empirical Analysis
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • D47 - Microeconomics - - Market Structure, Pricing, and Design - - - Market Design
    • 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

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