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Diagnosing Market Power in California's Deregulated Wholesale Electricity Market

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  • Borenstein, Severin
  • Bushnell, James
  • Wolak, Frank

Abstract

Effective competition in wholesale electricity markets is the cornerstone of the deregulation of the electricity generation industry. We examine the degree of competition in the California wholesale electricity market during June-November 1998 by comparing the market prices with estimates of the prices that would have resulted if all firms were price takers. We find that there were significant departures from competitive pricing and that it was most pronounced during the highest demand periods. Overall, this raised the cost of power purchases by about 22% above the competitive level. We also explain why the prices observed cannot be attributed to competitive peak-load pricing.

Suggested Citation

  • Borenstein, Severin & Bushnell, James & Wolak, Frank, 1999. "Diagnosing Market Power in California's Deregulated Wholesale Electricity Market," Competition Policy Center, Working Paper Series qt3rx965d5, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
    • Handle: RePEc:cdl:compol:qt3rx965d5
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    References listed on IDEAS

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    Cited by:

    1. Tin Cheuk Leung & Kwok Ping Ping & Kevin K. Tsui, 2019. "What can deregulators deregulate? The case of electricity," Journal of Regulatory Economics, Springer, vol. 56(1), pages 1-32, August.
    2. Jostein Skaar & Lars Sørgard, 2006. "Temporary Bottlenecks, Hydropower and Acquisitions," Scandinavian Journal of Economics, Wiley Blackwell, vol. 108(3), pages 481-497, October.
    3. Sertaç Oruç & Scott Cunningham, 2014. "Transmission Rights to the Electrical Transmission Grid in the Post Liberalization Era," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 5(4), pages 686-705, December.
    4. Paul L. Joskow, 2001. "California's Electricity Crisis," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 17(3), pages 365-388.
    5. 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).
    6. Joel I. Singer, 2002. "Double Auctions Across a Constrained Transmission Line," Operations Research, INFORMS, vol. 50(3), pages 449-461, June.
    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).

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