NOTICE DATE: April 24, 2020
NOTICE TYPE: M-B042420-01
SHORT DESCRIPTION: Implementation Details of NPRR856 and NPRR884
INTENDED AUDIENCE: All Market Participants
DAYS AFFECTED: May 26-28, 2020
LONG DESCRIPTION: ERCOT will be implementing system changes between May 26-28, 2020, for Protocol language associated with Nodal Protocol Revision Request (NPRR) 856, Treatment of OFFQS Status in Day-Ahead Make Whole and RUC Settlements, and NPRR884, Adjustments to Pricing and Settlements for Reliability Unit Commitments (RUCs) of On-Line Combined Cycle Generation Resources.
NPRR856 modifies the listed Settlement processes as follows:
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:
NPRR884 also modifies the listed Settlement processes as follows:
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 |
ACTION REQUIRED: Impacted Market Participants should implement changes to their shadow Settlement systems to incorporate the Protocol revisions made by NPRR856 and NPRR884.
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 and NPRR884 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 [log in to unmask].
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