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TITLE 16ECONOMIC REGULATION
PART 2PUBLIC UTILITY COMMISSION OF TEXAS
CHAPTER 25SUBSTANTIVE RULES APPLICABLE TO ELECTRIC SERVICE PROVIDERS
SUBCHAPTER HELECTRICAL PLANNING
DIVISION 1RENEWABLE ENERGY RESOURCES AND USE OF NATURAL GAS
RULE §25.173Renewable Energy Credit Program

    (C) The program administrator will require that RECs or solar RECs be adequately identified prior to recording a transfer and must issue an acknowledgement of the transaction to parties upon provision of adequate information. At a minimum, the following information must be provided:

      (i) identification of the parties;

      (ii) REC or solar REC serial number, REC or solar REC issue date, and the renewable resource that produced the REC or solar REC;

      (iii) the number of RECs or solar RECs to be transferred; and

      (iv) the transaction date.

    (D) A retail entity must surrender RECs or solar RECs to the program administrator for retirement from the market for a compliance period. The program administrator will document all REC and solar REC retirements annually.

    (E) On or after each April 1, the program administrator will retire RECs and solar RECs that have not been retired by retail entities and have reached the end of their compliance life.

    (F) The program administrator may establish a procedure to ensure that the award, transfer, and retirement of RECs and solar RECs are accurately recorded.

    (G) The issue date of RECs or solar RECs generated by renewable energy resources will coincide with the compliance period in which the credits are created. All RECs and solar RECs will have a compliance life of three compliance periods, after which the program administrator will retire them from the trading program.

    (H) Each REC or solar REC that is not used in the compliance period in which it was created may be banked and is valid for the next two compliance periods. For purposes of this subparagraph, calendar year 2023 counts as a single compliance period.

(f) Solar renewable portfolio standard (solar RPS).

  (1) Solar RECs may be generated, transferred, and retired by renewable energy power generators certified under subsection (d) of this section, retail entities, and other market participants as set forth in subsection (e)(4) of this section. Solar RECs generated by renewable energy resources in the calendar year 2025 may be used by any retail entity toward the solar RPS requirement for the compliance period beginning January 1, 2025, or on a voluntary basis in the subsequent years.

    (A) The program administrator will allocate a solar RPS requirement among all retail entities as a percentage of the retail sales of each retail entity as set forth in paragraph (2) of this subsection. Each retail entity is responsible for retiring sufficient solar RECs as set forth in paragraph (2) of this subsection and subsection (e)(4) of this section for the 2024 and 2025 compliance periods. The requirement to retire solar RECs to comply with this section becomes effective on the date a retail entity begins serving retail electric customers in Texas or, for an electric utility, as specified by law.

    (B) Solar RECs will be credited on an energy basis as set forth in subsection (e)(4) of this section.

    (C) A municipally-owned utility or distribution cooperative possessing renewable resources that meet the requirements of subsection (e)(2)(A) of this section may sell solar RECs generated by such a resource to retail entities as set forth in subsection (e)(4) of this section.

    (D) Except where specifically stated, the provisions of this section apply uniformly to all participants in the trading program.

    (E) The solar RPS end on September 1, 2025.

  (2) Allocation of solar RPS requirement to retail entities. The program administrator must allocate solar RPS requirements among retail entities. The solar RPS terminates September 1, 2025, but is subject to the settlement period following that termination date. The program administrator must use the following methodology to determine the total annual solar RPS requirement for a given year and the final solar RPS allocation for individual retail entities:

    (A) The total statewide solar RPS requirement for each applicable compliance period must be calculated in terms of MWh and must be equal to the applicable capacity requirement set forth in this paragraph multiplied by 8,760 hours for the 2024 compliance period and 5,840 hours for the 2025 compliance period, multiplied by the appropriate capacity conversion factor set forth in paragraph (3) of this subsection. The solar renewable energy capacity requirements for the compliance periods beginning January 1, 2024, and January 1, 2025, respectively are:

      (i) 1,310 MW of resources from New Facilities in the 2024 compliance period; and

      (ii) 655 MW of resources from New Facilities in the 2025 compliance period.

    (B) The final solar RPS allocation for an individual retail entity for a compliance period must be calculated as follows:

      (i) Prior to the preliminary solar RPS allocation, each retail entity's total retail energy sales are reduced to exclude the consumption of customers that opt out in accordance with paragraph (4) of this subsection. Each retail entity's preliminary solar RPS allocation is determined by dividing its total retail energy sales in Texas by the total retail sales in Texas of all retail entities and multiplying that percentage by the total statewide solar RPS requirement for that compliance period.

      (ii) The adjusted solar RPS allocation for each retail entity that is entitled to an offset is determined by reducing its preliminary solar RPS allocation by the offsets to which it qualifies, as determined under paragraph (5) of this subsection, with the maximum reduction equal to the retail entity's preliminary solar RPS allocation. The total reduction for all retail entities is equal to the total usable offsets for that compliance period.

      (iii) Each retail entity's final solar RPS allocation for a compliance period must be increased to recapture the total usable offsets calculated under clause (ii) of this subparagraph. The additional solar RPS allocation must be calculated by dividing the retail entity's preliminary RPS allocation by the total preliminary solar RPS allocation of all retail entities. This fraction must be multiplied by the total usable offsets for that compliance period and this amount must be added to the retail entity's adjusted solar RPS allocation to produce the retail entity's final solar RPS allocation for the compliance period.

    (C) Concurrent with determining final individual solar RPS allocations for the current compliance period in accordance with this subsection, the program administrator must recalculate the final solar RPS allocations for the previous compliance periods, taking into account corrections to retail sales resulting from resettlements. The difference between a retail entity's corrected final solar RPS allocation and its original final solar RPS allocation for the previous compliance periods must be added to or subtracted from the retail entity's final solar RPS allocation for the current compliance period.

  (3) Calculation of capacity conversion factor. The capacity conversion factor used by the program administrator to allocate solar RECs to retail entities must be calculated during the first quarter of the 2024 compliance period and will be utilized through the end of the solar RPS. The capacity conversion factor must:

    (A) Be based on actual generator performance data for the previous two years for solar renewable resources in the trading program during that period for which at least 12 months of performance data are available;

    (B) Represent a weighted average of generator performance; and

    (C) Use all actual generator performance data that is available for each solar renewable resource, excluding data for testing periods.

  (4) Opt-out notice.

    (A) A customer receiving electrical service at transmission-level voltage who submits an opt-out notice to the commission for the applicable compliance period must have its load excluded from the solar RPS calculation. Any opt-out notice submitted under the RPS as it existed prior to the effective date of this section continues to apply to the solar RPS for the compliance period as specified in this subsection.

    (B) An investor-owned utility that is subject to the solar RPS requirement under this section must not collect costs attributable to the solar RPS from an eligible customer who has submitted an opt-out notice. An investor-owned utility whose rates include the cost of solar RECs must file a tariff to implement this paragraph, not later than 30 days after the effective date of this section.

    (C) A customer opt-out notice must be filed in the commission-designated project number before the beginning of a compliance period for the notice to be effective for that period. Each opt-out notice must include the name of the individual customer opting out, the customer's ESI IDs, the retail entities serving those ESI IDs, and the term for which the notice is effective, which may not exceed two years. The customer opting out must also provide the information included in the opt-out notice directly to ERCOT and may request that ERCOT protect the Cont'd...

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