To approve NPRR210 as recommended by TAC in the 6/3/10 TAC Report.
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.
Feb 9, 2010
2.1, 3.9.1, 4.2.2, 5.7.4
This Nodal Protocol Revision Request (NPRR) changes the wind forecasting methodology to use a 50% probability of exceedance calculation instead of an 80% for Reliability Unit Commitment (RUC) considerations. This NPRR would align the Nodal Protocols with changes made to the zonal Protocols pursuant to Protocol Revision Request (PRR) 841, Revise Total ERCOT Wind Power Forecast (TEWPF), which was approved by the ERCOT Board on 3/23/10.
The P80 forecast provides an unrealistically low prediction of wind output resulting in overcommitment of RUC Resources. Implementation of this NPRR should allow ERCOT to commit fewer RUC Resources and still maintain reliability.