****************************************************************************************** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials ****************************************************************************************** NOTICE DATE: May 20, 2014 NOTICE TYPE: M-A050114-02 NPRR SHORT DESCRIPTION: Reminder: Settlement implementation details for NPRR555 INTENDED AUDIENCE: ERCOT Market Participants and Settlement Personnel DAY AFFECTED: June 1, 2014 LONG DESCRIPTION: Effective June 1, 2014, ERCOT will implement Nodal Protocol Revision Request (NPRR) 555, Load Resource Participation in Security-Constrained Economic Dispatch. NPRR555 enables Demand response from Controllable Load Resources, as re-defined, to be Dispatched by Security-Constrained Economic Dispatch (SCED) based on a Real-Time Market (RTM) Energy Bid. ACTION REQUIRED: Implement changes to shadow settlement systems in compliance with NPRR555. ADDITIONAL INFORMATION: Detailed description included in the Market Notice below. NPRR555<http://www.ercot.com/mktrules/issues/nprr/551-575/555> with associated documents can be found on the ERCOT website. NOTICE DATE: May 1, 2014 NOTICE TYPE: M-A050114-01 NPRR SHORT DESCRIPTION: Settlement implementation details for NPRR555 INTENDED AUDIENCE: ERCOT Market Participants and Settlement Personnel DAY AFFECTED: June 1, 2014 LONG DESCRIPTION: Effective June 1, 2014, ERCOT will implement Nodal Protocol Revision Request (NPRR) 555, Load Resource Participation in Security-Constrained Economic Dispatch. NPRR555 enables Demand response from Controllable Load Resources, as re-defined, to be Dispatched by Security-Constrained Economic Dispatch (SCED) based on a Real-Time Market (RTM) Energy Bid. Base Point Deviation Charges Controllable Load Resources that participate in SCED will be subject to Base Point Deviation charges as follows: If AABP_<Q>_<R>_<SP> * (¼) > ATPC_<Q>_<R>_<SP> Then perform the calculation process for under- consumption (Protocol Section 6.6.5.1.1.4) Otherwise perform the calculation process for over- consumption (Protocol Section 6.6.5.1.1.3) 6.6.5.1.1.3 Controllable Load Resource Base Point Deviation Charge for Over Consumption (1) ERCOT shall charge a QSE for a Controllable Load Resource for over-consumption that exceeds the following tolerance. The tolerance is the greater of: (a) XO% of the average of the Base Points in the Settlement Interval adjusted for any Ancillary Service deployments; or (b) YO MW for power consumption above the average of the Base Points in the Settlement Interval adjusted for any Ancillary Service deployments. (2) The Controllable Load Resource Base Point Deviation Charge for over-consumption variables XO and YO shall be subject to review and approval by TAC and shall be posted to the MIS Public Area no later than three Business Days after TAC approval. (3) The charge to each QSE for non-excused over-consumption for each Controllable Load Resource during a 15-minute Settlement Interval in which the Controllable Load Resource has received a Base Point is calculated as follows: BPDAMT q, r, p, i = -1 * Min (PRZ1, RTSPPp,i) * Min (1, KP1) * OCONSM q, r, p, i Where: OCONSM q, r, p, i = Max [0, ATPCq, r, p, i - ¼* Max (((1 + KLR1) * AABP q, r, p, i), (AABP q, r, p, i + QLR1)))] ATPC q, r, p, i = ((AVGTPC5M q, r, p i ,y) / 3) * ¼ 6.6.5.1.1.4 Controllable Load Resource Base Point Deviation Charge for Under Consumption (1) ERCOT shall charge a QSE for a Controllable Load Resource for under-consumption if the average telemetered power consumption is below than the lesser of: (a) [100-XU]% of the average of the Base Points in the Settlement Interval adjusted for any Ancillary Service deployments; or (b) The average of the Base Points in the Settlement Interval adjusted for any Ancillary Service deployments minus YU MW. (2) The Controllable Load Resource Base Point Deviation Charge for under-consumption variables XU and YU shall be subject to review and approval by TAC and shall be posted to the MIS Public Area no later than three Business Days after TAC approval. (3) The charge to each QSE for non-excused under-consumption of each Controllable Load Resource during a 15-minute Settlement Interval in which the Controllable Load Resource has received a Base Point is calculated as follows: BPDAMT q, r, p, i = Max (PRZ2, RTSPP p, i) * UCONSM q, r, p, i Where: UCONSM q, r, p, i = Max [0, [Min ((1 - KLR2) * ¼* AABP q, r, p, i ), ¼ * (AABP q, r, p, i - QLR2)) - ATPCq, r, p, i]] ATPC q, r, p, i = ((AVGTPC5M q, r, p i ,y,) / 3) * ¼ New Settlement Bill Determinants: The following new bill determinants will be implemented for NPRR555: Bill Determinant Short Description Extract Extract Table ATPC Average Telemetered Power Consumption SID/RTM MODE MKTINPUTHEADER MKTINPUTSCALAR CLRASFLAG Flag that indicates that the Controllable Load Resource has Ancillary Service responsibility SID/RTM CODE MKTINPUTHEADER MKTINPUTINTERVAL CLRDISPFLAG Flag that indicates the computed Base Point is equal to the snapshot of its telemetered power consumption for all SCED runs during the Settlement Interval SID/RTM CODE MKTINPUTHEADER MKTINPUTINTERVAL LROFLAG Flag that indicates that the Controllable Load Resource's telemetered Resource Status is set to OUTL SID/RTM CODE MKTINPUTHEADER MKTINPUTINTERVAL OCONSM Over-Consumption Volumes per QSE per Settlement Point per Controllable Load Resource RTM CODE RTMOUTPUTHEADER RTMOUTPUTINTERVAL UCONSM Under Consumption Volumes per QSE per Settlement Point per Controllable Load Resource RTM CODE RTMOUTPUTHEADER RTMOUTPUTINTERVAL New Settlement Factor/FactorValue: The following new Factors will be implemented for NPRR555: Factor Short Description Extract Extract Table KP1 The coefficient applied to the Settlement Point Price for over-consumption charge PRDE Factor/FactorValue KLR1 The percentage tolerance for over-consumption of a Controllable Load Resource when the CLR has Ancillary Service responsibility PRDE Factor/FactorValue KLR1_NOAS The percentage tolerance for over-consumption of a Controllable Load Resource when the CLR does not have Ancillary Service responsibility PRDE Factor/FactorValue KLR2 The percentage tolerance for under-consumption of a Controllable Load Resource when the CLR has Ancillary Service responsibility PRDE Factor/FactorValue KLR2_NOAS The percentage tolerance for under-consumption of a Controllable Load Resource when the CLR does not have Ancillary Service responsibility PRDE Factor/FactorValue PRZ1 The minimum price to use for the charge calculation when the CLR over consumed PRDE Factor/FactorValue PRZ2 The maximum price to use for the charge calculation when the CLR under consumed PRDE Factor/FactorValue QLR1 The MW tolerance for over-consumption of a Controllable Load Resource PRDE Factor/FactorValue QLR2 The MW tolerance for under-consumption of a Controllable Load Resource PRDE Factor/FactorValue ACTION REQUIRED: Implement changes to shadow settlement systems in compliance with NPRR555. ADDITIONAL INFORMATION: NPRR555<http://www.ercot.com/mktrules/issues/nprr/551-575/555> with associated documents can be found on the ERCOT website. Information on upcoming releases can be found on the Project Priority List<http://www.ercot.com/services/projects/index.html> (PPL). CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com. mm