SCED Look-Ahead Step 1: Pricing: Calculate Non-Binding Prices and Basepoints for Initial Research into SCED Look-Ahead and allow Consumers to have a Forward Price Projection (formerly "Calculate and Post Projected Non-Binding LMPs for the Next 15 Minutes")
To grant the 10/20/11 ERCOT Steel Mills appeal and to remand NPRR351 to PRS as revised by TAC; to encourage WMS and PRS to continue discussions with ERCOT on the details of the SCED Look-Ahead project through workshops, special meetings, or other means; to instruct PRS to vote on either recommending approval or rejecting NPRR351 by the January 2012 PRS meeting and to report back to TAC; and to request that ERCOT provide more information to PRS at the 11/17/11 PRS meeting (or prior to the next TAC meeting if the PRS meeting is too soon) about its intentions on how to actually implement this NPRR in regards to wind forecasts, wind base points, ramp rates, State Estimator inputs, Dynamic Ratings, binding constraints, LDLs and HDLs, and the disclosure of forecasted base points to operators and the market.
To table NPRR351 for one month; to request that ERCOT prepare comments outlining the impacts associated with Option 2 (as defined in the 9/21/11 ERCOT comments) and provide examples; and to request that WMS review NPRR351 and provide input by the October 20, 2011 PRS meeting.
To grant the ERCOT Steel Mills appeal and remand NPRR351 to PRS; to direct PRS to work with ERCOT to resolve any questions needed to complete the Impact Analysis; to request that ERCOT perform an Impact Analysis; and to direct PRS to recommend action on NPRR351 to TAC after the completion of the Impact Analysis.
Vote tallies here reflect individual votes, not the weight of the votes by market segment.
Affirmative votes are not recorded in these vote tallies. For additional details on the voting
record, please consult the Recommendation or Action Report, or the official vote tally if
available, as posted in the key documents.
Apr 13, 2011
Using the inputs specified in this Nodal Protocol Revision Request (NPRR), ERCOT will calculate prices and base points over the next hour, using an hour-long optimization instead of a five-minute optimization. These calculated prices and base points will initially be non-binding, although it is anticipated that these will become binding as Security-Constrained Economic Dispatch (SCED) Look-Ahead progresses in future phases.
Not covered by this NPRR are the larger pieces of SCED Look-Ahead, like Real-Time commitment of generators and Load Resources (possibly replacing or eliminating the Non-Spinning Reserve (Non-Spin) product), Real-Time co-optimization of energy and Ancillary Services (including determining when the co-optimization occurs), whether to charge make-whole charges and to whom they should be charged to, and how these revisions will support the overall market design and Resource adequacy requirements.
ERCOT expects this NPRR will be the first step of a multi-phase implementation of SCED Look-Ahead, with the results of this NPRR primarily being used for research purposes to determine how to best calculate prices and base points for future periods. In addition, the ERCOT Steel Mills and at least one retailer have expressed a strong desire to use the results to make Real-Time decisions on how to consume power in Real-Time based on prices.
Primarily, this will be used to determine the accuracy (and improve it, if possible) of the SCED Look-Ahead Real-Time Dispatch process. At issue will be whether the improved algorithm delivers better results than the current one. There are a number of areas to analyze, including:
· The predictability of the wind generation over the next hour.
· How near-term Load growth and generator Dispatch will create binding contingencies over the next hour.
· What sort of uplift costs will be created by the process, if any, once it becomes binding.