Revisions to Real-Time Energy Imbalance NPRR419
"The NPRR419 revision focuses on Real-Time Energy Imbalance equations and RMR Adjustment Charge implementation for ERCOT. It includes changes in billing determinants, volumetric imbalance data, and more details related to Resource Nodes, Load Zones, and Hubs."
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NPRR419 Blake Holt ERCOT April 5, 2016
NPRR419- Revisions to RTEIAMT and RMRAAMT NPRR419, Revise Real-Time Energy Imbalance and RMR Adjustment Charge, is scheduled for implementation as part of Release 2 in April (4/12/16). NPRR419: 1) Revises the Real-Time Energy Imbalance equations to provide intermediate bill determinants for the Resource s share of the generation site total revenues; 2) Revises the Resource Node, Load Zone, and Hub Real-Time Energy Imbalance equations to provide volumetric imbalance data for each QSE and Settlement Point; and 3) Revises the Reliability Must-Run (RMR) Adjustment Charge to charge the QSE for the revenues paid in accordance with the energy imbalance calculation. 2 PUBLIC
NPRR419- Revisions to RTEIAMT and RMRAAMT New intermediate outputs Bill Determinant RESREV Short Description Resource Share Revenue Settlement Payment ($) Extract RTM CODE Extract Table RTMOUTPUTHEADER RTMOUTPUTINTERVAL RESMEB Resource Share Net Meter Real- Time Energy Total (MWh) RTM CODE RTMOUTPUTHEADER RTMOUTPUTINTERVAL RNIMBAL Resource Node Energy Imbalance per QSE per Settlement Point (MWh) Load Zone Energy Imbalance per QSE per Settlement Point (MWh) RTM CODE RTMOUTPUTHEADER RTMOUTPUTINTERVAL LZIMBAL RTM CODE RTMOUTPUTHEADER RTMOUTPUTINTERVAL HBIMBAL Hub Energy Imbalance per QSE per Settlement Point (MWh) RTM CODE RTMOUTPUTHEADER RTMOUTPUTINTERVAL 3 PUBLIC
NPRR419- Revisions to RTEIAMT Imbalance payments at a Resource Node: r RTEIAMTq, p = (-1) * { ( (GSPLITPERq, r, gsc, p* NMSAMTTOTgsc RESREVq, r, gsc, p)) + ( WSLAMTTOTq, r,p)+RTSPPp * [(SSSKq, p * ) + (DAEPq, p * ) + RTQQEPq, p * ) (SSSRq, p * ) (DAESq, p * ) (RTQQESq, p * )]} gsc Where: Resource Revenue share RESREVq, r, gsc, p = GSPLITPERq, r, gsc, p * NMSAMTTOTgsc Resource MWh share RESMEBq, r, gsc, p = GSPLITPERq, r, gsc, p * NMRTETOTgsc QSE RNIMBALq, p = gsc ( r RESMEBq, r, gsc, p) + WSLTOTq, p + (SSSKq, p * ) + (DAEPq, p * ) + (RTQQEPq, p * ) (SSSRq, p * ) (DAESq, p * ) (RTQQESq, p * ) Imbalance at RN PUBLIC
NPRR419- Revisions to RTEIAMT Imbalance payments at a Load Zone: RTEIAMTq, p = (-1) * {[RTSPP p * [(SSSK q, p * ) + (DAEP q, p * ) + (RTQQEP q, p * ) (SSSR q, p * ) (DAES q, p * ) (RTQQES q, p * )]] + [RTSPPEW p * (RTMGNM q, p RTAML q, p)]} Where: QSE = (SSSK q, p * ) + (DAEP q, p * ) + (RTQQEP q, p * ) (SSSR q, p * ) (DAESq, p * ) (RTQQES q, p * ) RTAML q, p + RTMGNM q, p LZIMBAL q, p = Imbalance at LZ PUBLIC
NPRR419- Revisions to RTEIAMT Imbalance payments at a Hub: RTEIAMTq, p = (-1) * RTSPP p * {(SSSK q, p * ) + (DAEP q, p * ) + (RTQQEP q, p * ) (SSSR q, p * ) (DAES q, p * ) (RTQQES q, p * )} Where: QSE = (SSSK q, p * ) + (DAEP q, p * ) + (RTQQEP q, p * ) (SSSR q, p * ) (DAESq, p * ) (RTQQES q, p * ) HBIMBAL q, p Imbalance at HB PUBLIC
NPRR419- Revisions to RMRAAMT RMR Adjustment Charge: 4 r p = i RMRAAMTq = (-1) * (((-1) * (RTMG q, r, p, i * RTSPPp, i)) RESREVq, r, gsc, p + EMREAMT q, r, p, i + RUCMWAMT q, r, p + RUCCBAMT q, r, p + RUCDCAMT q, r, p + VSSEAMT q, r, p, i + VSSVARAMT q, r, i )] 1 i 1 i 4 1 = i 4 1 4 = = Where: Resource Revenue share RESREVq, r, gsc, p = GSPLITPERq, r, gsc, p * NMSAMTTOTgsc PUBLIC
NPRR419- Revisions to RTEIAMT and RMRAAMT Extract Changes New column added to RTMOUTPUTHEADER (gensitecode) Data Definition Language for the CSV: ERCOT-> Services-> Market Data Transparency->DDL XSD for the XML: ERCOT-> Services-> Market Data Transparency->XSDs 8 PUBLIC
