ERCOT Market Updates and Discussions - October 2018
Stay updated with the latest discussions and updates from ERCOT's meetings in October 2018, covering topics like DC tie curtailments, wind forecasting, AS methodology, and more.
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Presentation Transcript
Final(?) QMWG update October 2018
DC Tie Curtailments Reviewed Data from ERCOT that shows DC tie curtailments affect both system wide and local pricing. A market participant is considering submitting an NPRR on this topic.
Intra-hour wind forecasting ERCOT presented data that shows one of their wind forecasts is better than using persistent wind ERCOT is evaluating whether adjust GTBD based on this; more discussion to follow.
Completed business We discussed the AS methodology, and several NPRRS; all were discussed previously in this meeting.
Calculation of Combined Cycle Resource Node Prices We discussed a few options Status Quo (NPRR 890) maintains consistency with base points/dispatch ERCOT recommended change maintains consistency with DAM calculation and RTM settlements.
Change Ramp Rate Calculation ERCOT has proposed ramp rate sharing calculation change to use the percentage of regulation currently deployed. Feedback requested at next QMWG meeting
DAM PTP Obligation Bid Limits ERCOT has proposed limiting the number of bid IDs that a QSE can use in the DAM because they can increase the solve time of the DAM when many PTPs are in play Recent activity has indicated that a few QSEs using algorithmic trading have caused an issue. ERCOT is in communication with those QSEs
Makewhole Payments for SGRs Group discussed makewhole payments for RUC d switchable generation resources. No consensus, but generally all thought this should be handled with an NPRR. Some thought it was fair to pay additional costs to SGRs; others not sure. An NPRR from impacted resources may be in the works.
WMWG? We agreed to changed from QSE Managers Working Group to Wholesale Market Working Group. Thoughts? In addition, we recommend changes to our charter/description on the working group web page to reflect our current scope of work, regardless of a name change.
