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Market Power and Power Markets

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  • Jürgen Weiss

    (22 Burnside Avenue, Somerville, Massachusetts 02144)

Abstract

Market power is a prominent issue in the current debate about electricity industry restructuring. Market experiments I conducted with industry subjects via the Internet show the impact of seller concentration, demand-side bidding, and transmission constraints on competition in simulated electricity markets. Realistic modeling of the transmission grid revealed opportunities to exercise market power not found in simpler experimental designs. In particular, increasing the number of sellers in a market did not necessarily reduce market power as standard theory suggests. Rather, locational advantages allowed some players to maintain profits near monopoly levels even when seller concentration was at levels generally considered competitive. The implication is that divestiture of existing local monopolies may not be enough to make electricity markets competitive. I confirm the positive impact of demand-side bidding on competition.

Suggested Citation

  • Jürgen Weiss, 2002. "Market Power and Power Markets," Interfaces, INFORMS, vol. 32(5), pages 37-46, October.
    • Handle: RePEc:inm:orinte:v:32:y:2002:i:5:p:37-46
    DOI: 10.1287/inte.32.5.37.74
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    References listed on IDEAS

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    1. William W. Hogan, 1997. "A Market Power Model with Strategic Interaction in Electricity Networks," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4), pages 107-141.
    2. Cardell, Judith B. & Hitt, Carrie Cullen & Hogan, William W., 1997. "Market power and strategic interaction in electricity networks," Resource and Energy Economics, Elsevier, vol. 19(1-2), pages 109-137, March.
    3. Severin Borenstein & James. Bushnell & Steven Stoft, 2000. "The Competitive Effects of Transmission Capacity in A Deregulated Electricity Industry," RAND Journal of Economics, The RAND Corporation, vol. 31(2), pages 294-325, Summer.
    4. Green, Richard J & Newbery, David M, 1992. "Competition in the British Electricity Spot Market," Journal of Political Economy, University of Chicago Press, vol. 100(5), pages 929-953, October.
    5. Hogan, William W, 1992. "Contract Networks for Electric Power Transmission," Journal of Regulatory Economics, Springer, vol. 4(3), pages 211-242, September.
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    Cited by:

    1. Jordi Brandts & Paul Pezanis‐Christou & Arthur Schram, 2008. "Competition with forward contracts: a laboratory analysis motivated by electricity market design," Economic Journal, Royal Economic Society, vol. 118(525), pages 192-214, January.
    2. 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.
    3. Rajesh Gangakhedkar & R.K. Mishra, 2014. "Does NTPC Have a Dominant Position? A Critical Analysis," Journal of Infrastructure Development, India Development Foundation, vol. 6(2), pages 167-183, December.

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