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TITLE 16ECONOMIC REGULATION
PART 2PUBLIC UTILITY COMMISSION OF TEXAS
CHAPTER 25SUBSTANTIVE RULES APPLICABLE TO ELECTRIC SERVICE PROVIDERS
SUBCHAPTER OUNBUNDLING AND MARKET POWER
DIVISION 3CAPACITY AUCTION
RULE §25.381Capacity Auctions

      (i) Schedule types. The entitlement holder shall submit a day-ahead schedule for the entitlement. The entitlement holder shall submit a two-day-ahead schedule for the entitlement if notified to do so by ERCOT.

      (ii) Timing of scheduling. All of the times for scheduling referred to in this subparagraph are based on the times in the ERCOT protocols. If the times in the ERCOT protocols are changed, then the times in this subparagraph will be considered to have changed to equitably accommodate the changes in the ERCOT protocols.

        (I) The entitlement holder shall submit day-ahead or two-day-ahead schedules for the entitlement to the affiliated PGC no later than 8:00 a.m. The entitlement holder shall submit hour- ahead schedules for ancillary services from the entitlement to the affiliated PGC no later than one hour before the deadline for the affiliated PGC's QSE to submit hour-ahead schedules to ERCOT.

        (II) On days that ERCOT allows QSEs to change their day-ahead or two-day-ahead schedules to ERCOT by 1:00 p.m. for congestion or capacity insufficiency, the entitlement holder may submit a revised day-ahead or two-day-ahead schedule for energy from the entitlement to the affiliated PGC no later than noon.

        (III) The entitlement holder may submit to the affiliated PGC a revised day-ahead or two-day-ahead schedule for the non- spinning reserve ancillary services from the entitlement no later than 1:45 p.m. The entitlement holder cannot change the amount of energy scheduled in a revised schedule for the non-spinning reserve ancillary services.

        (IV) No hour-ahead schedules are permitted for energy from baseload entitlements. Hour-ahead schedules are permitted for ancillary services from baseload entitlements.

      (iii) Schedule content. Each schedule shall specify, for each settlement interval, the MW of energy scheduled to be delivered to the entitlement holder from the entitlement and the MW of each permitted ancillary service to be scheduled from the entitlement, subject to the scheduling limits in clause (iv) of this subparagraph.

      (iv) Scheduling limits.

        (I) Minimum energy. The entitlement holder may not schedule energy at less than 20 MW from the entitlement at any time during the month.

        (II) Ancillary services. The entitlement holder may use a baseload entitlement to provide responsive reserve service at a level of one MW, and non-spinning reserve service, up to a combined total of three MW. The baseload entitlement may not be used for any other ancillary service. Non- spinning reserve service may be provided from the entitlement in 30 minutes, and responsive reserve service may be provided from the entitlement in ten minutes.

        (III) Maximum changes. Subject to the minimum energy rate specified in subclause (I) of this clause, the rate at which the entitlement holder schedules energy in each hour generally cannot change more than plus or minus two MW. The following additional restrictions apply.

          (-a-) If the entitlement holder schedules or reserves any ancillary services in an hour, then the level of energy scheduled shall be the same in each settlement interval of the hour.

          (-b-) The maximum change in ancillary services scheduled from the first settlement interval in one hour to the first settlement interval of the next hour is plus or minus three MW.

          (-c-) The maximum change in energy scheduled from the first settlement interval in one hour to the first settlement interval in the next hour is plus or minus two MW.

          (-d-) The maximum change in energy scheduled from one settlement interval to the next is plus or minus one MW.

        (IV) Starts. The entitlement holder shall schedule energy from a baseload entitlement for every settlement interval and may not direct any starts of the entitlement.

        (V) Default schedule. If the entitlement holder does not submit a timely day-ahead or two-day ahead schedule, as applicable, then the schedule for the applicable operating day is deemed to be 20 MW of energy and zero MW of ancillary services to be delivered to the entitlement holder's designated default QSE in every settlement interval of the applicable operating day.

    (B) Contract price for baseload. The items included in the contract price between the entitlement holder and the affiliated PGC for the entitlement shall include:

      (i) Capacity payment. The capacity payment from the entitlement holder to the affiliated PGC is the capacity price in dollars per MW specified in the letter confirmation for the entitlement times 25 MW.

      (ii) Energy payment. The fuel cost owed to the affiliated PGC by the entitlement holder for the dispatched baseload power will be the average cost of coal, lignite, and nuclear fuel (in dollars per MWh), as applicable to the appropriate congestion zone in which the underlying generation units are located, based on the affiliated PGC's final excess cost over market (ECOM) model as determined pursuant to PURA §39.201. Affiliated PGCs of the electric utilities without an ECOM determination in their proceeding conducted pursuant to PURA §39.201 shall propose, for commission review, an average cost of fuel in a similar manner. The energy payment from the entitlement holder to the affiliated PGC is the fuel cost in dollars per MWh for the entitlement times the greater of:

        (I) The sum of the total energy scheduled from the entitlement during the entitlement month plus energy deployed up from the entitlement during the entitlement month; or

        (II) An amount of MWh equal to 20 MW times the number of hours in the entitlement month.

      (iii) Ancillary services payment. For baseload entitlements, the ancillary services payment to be paid by the entitlement holder to the affiliated PGC is zero.

      (iv) Energy deployed up reimbursement payment. For energy deployed up, for all settlement intervals in the entitlement month, the affiliated PGC shall pay the entitlement holder the sum of the zonal market clearing price of energy (MCPE) in dollars per MWh paid by ERCOT for that settlement interval times the energy deployed up in that settlement interval.

      (v) Energy deployed down reimbursement payment. For energy deployed down for all settlement intervals in the entitlement month, the entitlement holder shall pay the affiliated PGC the sum of the MCPE in dollars per MWh paid to ERCOT for that settlement interval times the energy deployed down in that settlement interval.

    (C) Timing of payment of contract price. The entitlement holder shall pay the affiliated PGC the capacity payment portion of the contract price not less than five days before the beginning of the entitlement month or 20 days after receiving an invoice for the capacity payment from the affiliated PGC, whichever is later. The entitlement holder shall pay the remainder of the contract price to the affiliated PGC after receiving an invoice for that amount in accordance with the other terms of the applicable Agreement. If the affiliated PGC owes the entitlement holder any net amount under the contract price calculation, it will pay that amount to the entitlement holder in accordance with the other terms of the Agreement.

  (4) Gas-intermediate product.

    (A) Gas-intermediate scheduling.

      (i) Schedule types. The entitlement holder shall submit a day-ahead schedule for the entitlement and may submit hour-ahead schedules. The entitlement holder shall submit a two-day-ahead schedule for the entitlement if notified to do so by ERCOT.

      (ii) Timing of scheduling. All of the times for scheduling referred to in this subparagraph are based on the times in the ERCOT protocols. If the times in the ERCOT protocols are changed, then the times in this subparagraph will be considered to have changed to equitably accommodate the changes in the ERCOT protocols.

        (I) The entitlement holder shall submit day-ahead or two-day-ahead schedules for the entitlement to the affiliated PGC no later than 8:00 a.m. The daily capacity commitment is determined for a gas-intermediate entitlement by the 8:00 a.m. schedule. The entitlement holder shall submit hour- ahead schedules for ancillary services for the entitlement to the affiliated PGC no later than one hour before the deadline for the affiliated PGC's QSE to submit hour-ahead schedules to ERCOT.

        (II) The entitlement holder may submit to the affiliated PGC a revised day-ahead or two-day-ahead schedule for energy from the entitlement no later than 10:00 a.m., subject to the limit on maximum energy in clause (iv)(I)(-b-) of this subparagraph.

        (III) On days that ERCOT allows QSEs to change their day-ahead or two-day-ahead schedules to ERCOT by 1:00 p.m. for congestion or capacity insufficiency, the entitlement holder may submit a revised day-ahead or two-day-ahead schedule for energy from the entitlement to the affiliated PGC no later than noon, subject to the limit on maximum energy in clause (iv)(I)(-b-) of this subparagraph.

Cont'd...

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