Operations; PRR SCR; Settlements

Mon, May 18, 2020 04:14 PM

M-B042420-02 Reminder - Implementation Details of NPRR856, NPRR884, and OBDRR006


NOTICE DATE: May18, 2020

NOTICE TYPE: M-B042420-02 NPRR

SHORT DESCRIPTION:  Reminder - Implementation Details of NPRR856, NPRR884, and OBDRR006

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED:  May 29, 2020

LONG DESCRIPTION:  On May 29, 2020, Protocol language related to Nodal Protocol Revision Request (NPRR) 856, Treatment of OFFQS Status in Day-Ahead Make Whole and RUC Settlements, NPRR884, Adjustments to Pricing and Settlements for Reliability Unit Commitments (RUCs) of On-Line Combined Cycle Generation Resources, and Other Binding Document language related to Other Binding Document Revision Request (OBDRR) 006, Alignment of ORDC OBD with NPRR884, Adjustments to Pricing and Settlement for Reliability Unit Commitments (RUCs) of On-Line Combined Cycle Generation Resources, will be implemented.

NPRR856 modifies the listed Settlement processes as follows:

  • Protocol Section 4.6.2.3, Day-Ahead Make-Whole Settlements – For purposes of determining eligibility for startup and energy cost compensation for a Resource, a telemetered Resource Status of OFFQS shall be considered as Off-Line.
  • Protocol Section 5.6.2, RUC Startup Cost Eligibility – For purposes of determining eligibility for startup cost compensation for a Resource, the following applies:
    • A telemetered Resource Status of OFFQS shall be considered as Off-Line.
    • A Current Operating Plan (COP) Resource Status of OFFQS will not be considered as Qualified Scheduling Entity (QSE)-committed for the Settlement Interval unless that interval has been committed due to a Day-Ahead Market (DAM) award for energy.
  • RUC Capacity-Short Charge (RUCCSAMT):
    • Protocol Section 5.7.4.1.1, Capacity Shortfall Ratio Share - RUC Capacity Snapshot at time of RUC (RUCCAPSNAP) – Adjusted to include the High Ancillary Service Limit (HASL), according to the COP and Trades Snapshot, for a Generation Resource that is planning to operate as a Quick Start Generation Resource (QSGR) for the Settlement Interval as shown by the COP Resource Status of OFFQS.
    • Protocol Section 5.7.4.1.1 - RUC Capacity Snapshot during Adjustment Period (RUCCAPADJ) – Adjusted to include the HASL, according to the Adjustment Period snapshot, for a Generation Resource that is planning to operate as a QSGR for the Settlement Interval as shown by the COP Resource Status of OFFQS.

NPRR884 introduces various changes needed for ERCOT systems to effectively manage cases where ERCOT issues a RUC instruction to a Combined Cycle Generation Resource that is already QSE-committed for an hour, with the instruction being that the Resource operate in a configuration with greater capacity for that same hour. 

NPRR884 includes the following changes:

  • Capturing the incremental capacity committed by ERCOT in the determination of the Real-Time On-Line Reliability Deployment Price Adder and Real-Time Reserve Price Adder.
  • Modifying the method for creating the Energy Offer Curve for the incremental capacity committed by ERCOT.
  • Modifying settlement processes to consider compensation to the QSE for the transition between configurations in response to the RUC instruction.

NPRR884 also modifies the listed Settlement processes as follows:

  • Protocol Section 5.7.1.1, RUC Guarantee (RUCG) – Adjusted to account for the incremental startup and minimum-energy cost of a RUC-Committed Combined Cycle Resource during a RUC-Commitment for Additional Capacity.
  • Protocol Section 5.7.1.2, RUC Minimum-Energy Revenue (RUCMEREV) – Adjusted to account for the incremental minimum-energy revenue from the RUC-Committed Combined Cycle Resource during a RUC-Commitment for Additional Capacity.
  • Protocol Section 5.7.2, RUC Clawback Charge (RUCCBAMT) – Adjusted to prevent the claw-back of revenues from intervals that are RUC-Committed for Additional Capacity.
  • RUC Capacity-Short Charge (RUCCSAMT):
    • Protocol Section 5.7.4.1, RUC Capacity Total (RUCCAPTOT) – Adjusted to account for the incremental RUC-Committed capacity during a RUC-Commitment for Additional Capacity.
    • Protocol Section 5.7.4.1.1, RUC Capacity Snapshot at time of RUC (RUCCAPSNAP) – Adjusted to include the HASL, according to the COP and Trades Snapshot, for the Combined Cycle Generation Resource that was QSE-Committed at the time the RUC-Commitment for Additional Capacity was issued.
    • Protocol Section 5.7.4.1.1, RUC Capacity Snapshot during Adjustment Period (RUCCAPADJ) – Adjusted to include the HASL, according to the Adjustment Period snapshot, for the Combined Cycle Generation Resource that was QSE-Committed at the time the RUC-Commitment for Additional Capacity was issued.
  • Protocol Section 6.7.5, Real-Time Ancillary Service Imbalance Payment or Charge (RTASIAMT) – Adjusted to prevent the exclusion of capacity in intervals that are RUC-Committed for Additional Capacity.

New Settlement Bill Determinants

Bill Determinant

Short Description

Extract

Extract Table

OFFQSADJ

COP Resource Status of OFFQS as seen at the end of the Adjustment Period

SID & RTM CODE

MKTINPUTHEADER

MKTINPUTINTERVAL

OFFQSSNAP

COP Resource Status of OFFQS as seen in the COP & Trades Snapshot for the RUC Process

SID & RTM CODE

MKTINPUTHEADER

MKTINPUTINTERVAL

RUCAC

Reliability Unit Commitment for Additional Capacity

SID & RTM CODE

MKTINPUTHEADER

MKTINPUTINTERVAL

RUCGME

RUC Minimum-Energy Guarantee by interval

RTM CODE

RUCOUTPUTHEADER

RUCOUTPUTINTERVAL

RUCMEREV96

RUC Minimum-Energy Revenue by interval

RTM CODE

RUCOUTPUTHEADER

RUCOUTPUTINTERVAL

RUCEXRR96

Revenue Less Cost above LSL During RUC-Committed Hours by interval

RTM CODE

RUCOUTPUTHEADER

RUCOUTPUTINTERVAL

RUCACREV

Revenue from RUC for Additional Capacity Hours

RTM CODE

RUCOUTPUTHEADER

RUCOUTPUTINTERVAL

 

OBDRR006 aligns language in the Other Binding Document, Methodology for Implementing Operating Reserve Demand Curve (ORDC) to Calculate Real-Time Reserve Price Adder, with NPRR884.

ACTION REQUIRED:  Impacted Market Participants should implement changes to their shadow Settlement systems to incorporate the Protocol revisions made by NPRR856, NPRR884, and OBDRR006.

ADDITIONAL INFORMATION:  Pursuant to Nodal Protocol Section 21.6, Nodal Protocol Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.

NPRR856, NPRR884 , and OBDRR006 and their associated documents can be found on the ERCOT website.

Additional Settlement details can be found in the Settlements Charge Matrix located on the Settlements Information page on the Market Information System (MIS) Public Area.

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 ClientServices@ercot.com.

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