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***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. *****
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<http://www.ercot.com/mktrules/issues/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]<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.
sa
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