NOTICE DATE: May 26, 2017
NOTICE TYPE: M-C052617-01 Release - Wholesale
SHORT DESCRIPTION: Implementation Details for NPRR801
INTENDED AUDIENCE: ERCOT Market Participants
DAYS AFFECTED: June 27 – 29, 2017
LONG DESCRIPTION: ERCOT will be implementing Energy Management System (EMS), Market Management System (MMS), and settlement changes for Nodal Protocol Revision Request (NPRR) 801, Non-Controllable Load Resource
MW in PRC, between June 27 and 29, 2017.
NPRR801 revises the Physical Responsive Capability (PRC) calculation in EMS from including the Responsive Reserve (RRS) service MW responsibility from Load Resources controlled by high-set under frequency relays to including all MW from
these Load Resources from their current output to their Low Power Consumption (LPC) capped at 150% of the Qualified Scheduling Entity’s (QSEs) RRS responsibility from non-Controllable Load Resources.
The Operating Reserve Demand Curve (ORDC) reserves are adjusted in the MMS and the Other Binding Document, “Methodology for Implementing Operating Reserve Demand Curve (ORDC) to Calculate Real-Time Reserve Price Adder”, to align with the
PRC change. The Ancillary Service imbalance Settlement is changed to align with the change to the ORDC reserves.
New Settlement Calculation Revisions:
6.7.5 Real-Time Ancillary Service Imbalance Payment or Charge (paragraph 7)
Real-Time Capacity from Non-Controllable Load Resources carrying Responsive Reserve for the QSE
RTNCLRCAPq = Min(Max(RTNCLRNPC q
– RTNCLRLPC q, 0.0), RTNCLRRRS q * 1.5)
RTNCLRRRS q = SYS_GEN_DISCFACTOR *
RTNCLRRRSR
q, r, p
Real-Time Controllable Load Resource Non-Spin Responsibility for the QSE
RTCLRNSRESPq
= SYS_GEN_DISCFACTOR *
RTCLRNSRESPR
q, r, p
New Settlement Bill Determinants:
|
Bill Determinant |
Short Description |
Extract |
Extract Table |
|
RTCLRNSRESPR |
Real-Time Controllable Load Resource Non-Spin Responsibility for the Resource |
RTM CODE |
MKTINPUTHEADER MKTINPUTINTERVAL |
|
RTNCLRRRSR |
Real-Time Non-Controllable Load Resource Responsive Reserve |
RTM CODE |
MKTINPUTHEADER MKTINPUTINTERVAL |
|
RTNCLRRRS |
Real-Time Non-Controllable Load Resources Responsive Reserve for the QSE |
RTM CODE |
RTMOUTPUTHEADER RTMOUTPUTINTERVAL |
ACTION REQUIRED: Implement changes to shadow Settlement systems for NPRR801.
ADDITIONAL INFORMATION:
NPRR801 and associated documents can be found on the ERCOT website.
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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