Diagnosing Market Power in California's Deregulated Wholesale Electricity Market
AbstractEffective 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.
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Bibliographic InfoPaper provided by Competition Policy Center, Institute for Business and Economic Research, UC Berkeley in its series Competition Policy Center, Working Paper Series with number qt3rx965d5.
Date of creation: 01 Jul 1999
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California; deregulation; electricity market;
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