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Enron Mail |
market_relations@nyiso.com writes to the NYISO_TECH_EXCHANGE Discussion List: Andrew Hartshorn 09/21/2001 04:03 PM Sent by: Andrew Hartshorn To: nyiso_tech_exchange@list1.thebiz.net cc: Subject: Re: Follow Up Material from 9/19 Pricing Issues Task Force meeting Responding to Tim Lynch's comments: The BME-SCD Operating Reserve Comparison includes the following note: "Data for BME hours beginning 0:00 was not reliable, assumed all hours were not short." Please explain why data for this hour each day is unreliable and how it impacts customer bills. We are troubled that after operating a system for nearly two years, problems remain that cause this magnitude of inaccuracy. Tim Lynch NYSEG Energy Trading ******************** As was explained at the PITF meeting the footnote in question related to a data transferral problem between the NYISO and LECG that had NO IMPACT on the BME prices, schedules or any billing matters. To collate the data for the PITF meeting in a meaningful way it was necessary to track the state of the 30 minute reserve constraint i.e. was BME able to purchase sufficient 30 minute reserves to meet the pool 30 minute reserve requirement. LECG's information for the status of the 30 minute reserve constraint for hour beginning 0:00 was unreliable because of data tranferral and processing problems so we made the very reasonable assumption that in the middle of the night there is little chance that we were reserve short. The footnote was entirely reasonable given the context of the discussion for which the data was prepared. Thank-you Andrew Hartshorn Principal LECG, LLC.
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