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Ancillary Services: A Call for Fair Prices

Fortnightly Magazine - January 1 2000

19, 1998.

6 Additional detail on the methods we developed and applied to split regulation from load following are in a forthcoming Oak Ridge National Laboratory report, "System and Customer-Specific Metrics for Regulation and Load Following," by Brendan Kirby and Eric Hirst.

7 The amount of generating capacity provided for regulation is a multiple of the regulation standard deviation to ensure sufficient probability of meeting these temporal variations in load. Multiplying the standard deviation by two provides 95 percent coverage, and multiplying by three provides 99 percent coverage.


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