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IDR Meter Threshold Impact on Load Forecasting Models RMS/COPS Workshop III - IDR Meter Protocol Requirement Threshold January 30, 2015. Forecasting Categories. F orecasting process utilizes aggregated output from ERCOT settlement process
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IDR Meter Threshold Impact on Load Forecasting Models RMS/COPS Workshop III - IDR Meter Protocol Requirement Threshold January 30, 2015
Forecasting Categories • Forecasting process utilizes aggregated output from ERCOT settlement process • ERCOTs data aggregation process uses PROFILECODE to produce aggregated energy for the categories below: • Residential • Lighting • Business (excluding BUSIDRRQ) • BUSIDRRQ • Forecasting reduces the four categories above to three by combining Residential & Lighting • Forecasting then uses the load volume and ESI ID counts per each category by weather zone to produce forecast models
IDR Meter Threshold Impacts Load Forecasting Process • Eliminating/Modifying the IDR Meter protocol required threshold would shift loads between ERCOT forecasting categories • Process utilizes historical load volumes • Shifting of load would impact the accuracy of the load forecasting process • Impact is minimized if ERCOT has the ability to identify large customers with AMS meters no longer aggregated into the BUSIDRRQ category
An option that maintains integrity of forecasting process • If AMS meter reaches some defined threshold, switch the weather sensitivity code from “WS” to “NWS” • All AMS meters are currently defined by protocol section 11.4.3(2) as “WS” so a protocol change would be required • Allows for identification of all large customers as BUSIDRRQ or AMS meters with NWS • Does not require a new PROFILECODE • Allows load forecasting to continue to use settlement aggregated output • ERCOT will make appropriate internal changes to support • Allows the market to eliminate or modify the IDR requirement threshold where AMS meters are deployed