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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

    (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.

        (IV) The entitlement holder may submit to the affiliated PGC a revised day-ahead or two-day-ahead schedule for 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 ancillary services.

        (V) No hour-ahead schedules are permitted for energy from gas- intermediate entitlements. Hour-ahead schedules are permitted for ancillary services from gas-intermediate entitlements.

      (iii) Schedule content. Each schedule shall specify:

        (I) For each settlement interval, the MW of energy scheduled to be delivered to the entitlement holder from the entitlement; and

        (II) For each hour, the MW scheduled to be reserved for the entitlement holder's use of each ancillary service from the entitlement. The entitlement holder shall include any MW bid (but not pricing) for the balancing energy up and balancing energy down ancillary services on the schedule.

      (iv) Scheduling limits.

        (I) Total. Generally, the rate at which energy is scheduled cannot change more than plus or minus six MW and the rate at which ancillary services is reserved or scheduled by the entitlement holder in each hour cannot change more than plus or minus six MW. The restrictions in items (-a-) and (-b-) of this subclause apply.

          (-a-) Minimum energy. The entitlement holder may not schedule energy at less than eight MW from the entitlement at any time during the month, unless the entitlement holder has elected the gas-intermediate Start Option, in which case the entitlement holder may reduce energy below eight MW as specified in subclause (IV)(-a-) of this clause.

          (-b-) Maximum energy. The entitlement holder may not schedule energy at any level greater than the daily capacity commitment in any settlement interval.

        (II) Maximum changes. Subject to the limitations specified in subclause (I) of this clause:

          (-a-) Generally, the rate at which energy is scheduled by the entitlement holder in each hour cannot change more than plus or minus six MW and the rate at which ancillary services are scheduled or reserved by the entitlement holder in each hour cannot change more than plus or minus six MW. The restrictions in items (-b-) and (-c-) apply.

          (-b-) Energy. Subject to the maximum change specified in item (-a-) of this subclause:

            (-1-) The maximum change in energy scheduled from the first settlement interval in one hour to the first settlement interval of the next hour is plus or minus six MW.

            (-2-) Subject to the limitation in subitem (-1-) of this item, the maximum change in energy scheduled from one settlement interval to the next is plus or minus two MW.

          (-c-) Ancillary services. Subject to the maximum change specified in item (-a-) of this subclause, 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 six MW.

        (III) Ancillary services. Subject to the limitations in subclauses (I) and (II) of this clause:

          (-a-) The total MW of non-spinning reserve service, regulation service up, regulation service down, responsive reserve service, and balancing energy service up and balancing energy service down from the entitlement in one hour shall not exceed ten MW;

          (-b-) Subject to the limitations in item (-a-) of this subclause, the total MW of regulation service up, regulation service down, responsive reserve service, and bids for balancing energy service up and balancing energy service down from the entitlement in one hour shall not exceed:

            (-1-) Four MW if the entitlement holder schedules any two-MW changes in the levels of energy within the hour;

            (-2-) Five MW if the entitlement holder schedules any one-MW, but not two-MW changes in the levels of energy within the hour; or

            (-3-) Six MW if the entitlement holder does not schedule any changes in the levels of energy within the hour.

          (-c-) In addition to the limitations in items (-a-) and (-b-) of this subclause, the total MW of non-spinning reserve service, regulation service up, responsive reserve service, and balancing energy service up from the entitlement in a settlement interval shall not exceed an amount of MW equal to the daily capacity commitment for the settlement interval minus the energy scheduled for that settlement interval.

Cont'd...

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