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CSWG – NPRR 322 ERCOT Update

CSWG – NPRR 322 ERCOT Update. ERCOT Matthew Tozer. NPRR 322 Overview. All PTP Options and PTP Options with Refund will be settled in the Day-Ahead Market NOIES can purchase a PTP Obligation with links to a PTP Option in the DAM Must have same source and sink pair

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CSWG – NPRR 322 ERCOT Update

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  1. CSWG – NPRR 322 ERCOT Update ERCOT Matthew Tozer CSWG

  2. NPRR 322 Overview • All PTP Options and PTP Options with Refund will be settled in the Day-Ahead Market • NOIES can purchase a PTP Obligation with links to a PTP Option in the DAM • Must have same source and sink pair • MWs on obligation must be less than or equal to the MWs on the option • The PTP Obligation will settle in Real Time as the positive difference between the sink and source settlement point prices • If price difference is negative, the NOIE QSE will not be charged in Real Time • Removing Real Time PTP Option and Real Time PTP Option with Refund CRR settlements • CRR Settlement changes affect ALLCRRAHs. (see first two bullets of slide 7) • Changes to DAM and RTM settlements and CRR Shortfall calculation potentially affect all QSEs and CRRAHs

  3. Implementation – New Charge Type (DAM) • DARTOBLLOAMT- Day Ahead Real Time Obligation with Links to an Option Charge. • ERCOT will charge the QSE of a cleared Real-Time Obligation bid with links to an Option the positive difference in the DAM Settlement Point Prices between the sink Settlement Point and the source Settlement Point. • DARTOBLLOAMT_<Q>_<SRSP>_<SKSP> = Max(0,DAOBLPR_<SRSP>_<SKSP>) * RTOBLLO_<Q>_<SRSP>_<SKSP> Where,  DAOBLPR_<SRSP>_<SKSP> = DASPP_<SKSP> – DASPP_<SRSP>

  4. Implementation – New Charge Type (RT CRR) • RTOBLLO AMT– Real Time Obligations with links to an Option Payment • ERCOT will pay the QSE of a cleared Real-Time Obligation with links to an Option the positive difference in the Real-Time Settlement Point Prices between the sink Settlement Point and the source Settlement Point. • RTOBLLOAMT_<Q>_<SRSP>_<SKSP> = (-1) * Max(0, RTOBLPR_<SRSP>_<SKSP>) * RTOBLLO_<Q>_<SRSP>_<SKSP> Where,  RTOBLPR_<SRSP>_<SKSP> = Sumh (RTSPP_<SKSP> – RTSPP_<SRSP>)

  5. Implementation – Changes to DAM & RTM CRR Settlements • Full quantity of PTP Options and PTP Options with Refund awarded in CRR Auction will now settle in DAM • We will not calculate DAOPT and DAOPTR • Real Time PTP Option and PTP Options with Refund will not exist • We will not calculate RTOPT and RTOPTR • Daily Day Ahead CRR Shortfall will no longer include RTOPTAMTTOT and RTOPTRAMTTOT • Daily Real Time CRR Shortfall will no longer be calculated

  6. Implementation – Changes to DAM & RT Settlements • DARTOBLLOAMTTOT will be added to DA Congestion Rent Calculation • RTOBLLOAMTTOT will be added to Real Time Revenue Neutrality calculation

  7. Bill Determinant Changes • DAOPT = OPT • Removing DAOPT bill determinant, replacing with OPT • DAOPTR = OPTR • Removing DAOPTR bill determinant, replacing with OPTR • RTOBLLO – Real Time Obligations with links to an Option • A NOIE can offer (RTOBLLOOFR) to buy an obligation linked to an option in DAM, If a MW amount is awarded in DAM (DAOPTAW), the remainder (RTOBLLO) will be charged in DAM and paid in RTM according to positive congestion along the settlement point path. RTOBLLO <Q> <SRSP> <SKSP>= ∑CRRID(RTOBLLOOFR_<Q>_<SRSP>_<SKSP> _<CRR ID>_- DAOPTAW_<Q>_<SRSP>_<SKSP> _<CRR ID>_)

  8. Bill Determinant Changes • The calculation for RTOBLLO will mimic the current calculation of RTOPT and RTOPTR, but we will use new input bill determinants described below • DAOFROPT = RTOBLLOOFR • Renaming DAOFROPT to RTOBLLOOFR • Changing CRRAH attribute to QSE attribute • DAAWOPT = DAOPTAW • Renaming DAAWOPT to DAOPTAW • Changing CRRAH attribute to QSE attribute

  9. Next Steps • ERCOT will file “Clean Up” NPRR to match protocols to implementation • THIS DOES NOT Change any of the settlements. It only provides clarity on implementation details like bill determinant names and intermediate calculations • Reach out to CSWG, ERCOT Settlements and Client Services for questions • Release planned for October 2012 • 30 day market notice will be sent

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