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Electricity Market Integration in the Pacific Northwest

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  • Chi-Keung Woo
  • Debra Lloyd-Zannetti
  • Ira Horowitz

Abstract

Evidence of market integration and price competition support a policy of price deregulation and open access in the electric power industry. The objective of this paper is to test the hypotheses that wholesale electricity submarkets in the Pacific Northwest region of the WSCC are integrated, and price competition exists within these integrated submarkets. To this end, we apply a bivariate cointegration test, a price-difference test and a causality test to the 1996 on-peak daily electricity prices off our submarkets in the Pacific Northwest of North America: Mid-Columbia and California-Oregon Border (COB) in the Western US, and BC/US Border and Alberta Power Pool in Western Canada. The price-difference test results support the hypothesis that the following pairs of markets are integrated: (a) BC/US Border and Mid-Columbia; (b) BC/US Border and COB; and (c) Mid-Columbia and COB. A comparison between the gross profit from price arbitrage and the posted transmission tariff indicates that price competition prevails in these market pairs, and the causality test results provide supporting evidence that price leadership does not exist in these three market pairs. Finally, a market-share analysis indicates that B. C. Hydro does not have market power in the aggregate market comprising BC/US Border, Mid-Columbia and COB.

Suggested Citation

  • Chi-Keung Woo & Debra Lloyd-Zannetti & Ira Horowitz, 1997. "Electricity Market Integration in the Pacific Northwest," The Energy Journal, , vol. 18(3), pages 75-101, July.
    • Handle: RePEc:sae:enejou:v:18:y:1997:i:3:p:75-101
    DOI: 10.5547/ISSN0195-6574-EJ-Vol18-No3-4
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    References listed on IDEAS

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    1. Marlin King & Milan Cuc, 1996. "Price Convergence in North American Natural Gas Spot Markets," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2), pages 17-42.
    2. Arthur De Vany & W. David Walls, 1993. "Pipeline Access and Market Integration in the Natural Gas Industry: Evidence from Cointegration Tests," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4), pages 1-20.
    3. Davidson, Russell & MacKinnon, James G., 1993. "Estimation and Inference in Econometrics," OUP Catalogue, Oxford University Press, number 9780195060119, Decembrie.
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