NOTICE DATE: March 19, 2021
NOTICE TYPE: M-F022621-02 General
SHORT DESCRIPTION: Reminder - Implementation Details of NPRR971, NPRR986, NPRR1043, and VCMRR027
INTENDED AUDIENCE: All Market Participants
DAYS AFFECTED: April 2, 2021
LONG DESCRIPTION: On April 2, 2021, Protocol language associated with Nodal Protocol Revision Request (NPRR) 971, Replacing the Real-Time Average Incremental Energy Cost; NPRR 986, BESTF-2 Energy Storage Resource Energy Offer Curves, Pricing, Dispatch, and Mitigation; NPRR 1043, Clarification of NPRR986 Language Related to Wholesale Storage Load (WSL); and Verifiable Cost Manual language associated with Verifiable Cost Manual Revision Request (VCMRR) 027, Related to NPRR986, BESTF-2 Energy Storage Resource Energy Offer Curves, Pricing, Dispatch, and Mitigation, will be implemented.
NPRR971 introduces the following changes to the Nodal Protocols:
NPRR986 and NPRR1043 introduce the following changes to the Nodal Protocols for Energy Storage Resources (ESRs) in the combo model era:
VCMRR027 deletes Section 2.2, Exceptions for Energy Storage Resources, and Appendix 10, Procedure for Evaluating Costs and Caps for Energy Storage Resources, to align the Verifiable Cost Manual with the Nodal Protocol changes addressed in NPRR 986 that state an ESR is not allowed to submit verifiable costs and will have their MOC set to the SWCAP.
New Settlement Billing Determinants:
Bill Determinant |
Short Description |
Extract |
Extract Table |
RTEOCOST |
Real-Time Energy Offer Curve Cost Cap |
RTM CODE |
PREPROCESSHEADER PREPROCESSINTERVAL |
ESRNWSLTOT |
Non-WSL ESR Charging Load |
RTM CODE |
AGGOUTPUTHEADER AGGOUTPUTINTERVAL |
MEBR |
Metered Energy at the Bus for Non-WSL ESR Charging Load |
RTM CODE |
AGGOUTPUTHEADER AGGOUTPUTINTERVAL |
ESRNWSLAMTTOT |
ESR Non-WSL Amount |
RTM CODE |
RTMOUTPUTHEADER RTMOUTPUTINTERVAL |
RTRMPRESR |
Real-Time Price for Energy Metered as ESR Load |
SID & RTM CODE |
MKTINPUTHEADER MKTINPUTINTERVAL |
RTAMLESRNW |
Real-Time Adjusted Metered Load for Non-WSL ESR Charging Load |
RTM CODE |
AGGOUTPUTHEADER AGGOUTPUTINTERVAL |
Settlement Billing Determinants that will no longer be used after the implementation of these projects:
Bill Determinant |
Short Description |
Extract |
Extract Table |
RTRMPRWSL |
Real-Time Price for Wholesale Storage Load |
SID & RTM CODE |
MKTINPUTHEADER MKTINPUTINTERVAL |
RTAIEC |
Real-Time Average Incremental Energy Cost |
RTM CODE |
PREPROCESSHEADER PREPROCESSINTERVAL |
RTVSSAIEC |
Real-Time Voltage Support Service Average Incremental Energy Cost |
RTM CODE |
PREPROCESSHEADER PREPROCESSINTERVAL |
RTHSLAIEC |
Real-Time High Sustainable Limit Average Incremental Energy Cost |
RTM CODE |
PREPROCESSHEADER PREPROCESSINTERVAL |
HDLOAIEC |
High Dispatch Limit Override Average Incremental Energy Cost |
RTM CODE |
MKTINPUTHEADER MKTINPUTINTERVAL |
ACTION REQUIRED: Impacted Market Participants should implement changes to their shadow systems to incorporate the Protocol and Verifiable Cost Manual revisions made by NPRR917, NPRR986, NPRR1043, and VCMRR027.
ADDITIONAL INFORMATION: Pursuant to Nodal Protocol Section 21.6, Nodal Protocol Revision Implementation, and Verifiable Cost Manual Section 13.6, Verifiable Cost Manual Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.
NPRR917, NPRR986, NPRR1043, and VCMRR027 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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