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On July 10, 2026 Commission Staff of the TPUC filed a memorandum of the proposal for publication that the Commission approved at its July 9, 2026 open meeting regarding the rulemaking to update wholesale and IOU retail transmission cost recovery in the ERCOT region.

The deadline to file comments in the above-described project is August 11, 2026.

“The Public Utility Commission of Texas (commission) proposes amendments to §25.192 relating to Transmission Rates for Export from ERCOT and §25.193 relating to Distribution Service Provider Transmission Cost Recovery Factors (TCRF) and new §25.252 relating to Large Load Customer Tariffs. This proposal will implement Section 6 of Senate Bill 6, as enacted during the Texas 89th Regular Legislative Session. The proposal will restyle amended §25.192 to Transmission Service Rates, replace the four coincident peak (4CP) methodology with a 12 coincident peak (12CP) methodology for assigning transmission costs, codify using a 30-minute interval to measure 12CP, require non-opt-in-entity distribution service providers (DSPs) to provide ERCOT access to settlement-quality meter data for each large load customer in its service territory, require block load transfers to pay transmission costs, require interconnection fees paid under §25.194 relating to Large Load Interconnection Standards and financial security forfeited under §25.194 to be used to offset the TSP’s revenue requirement, and require adjustments to the calculation of DSP-level billing determinants that maintain alignment between wholesale transmission cost recovery and retail transmission cost recovery. The proposal will also restyle amended §25.193 to Distribution Service Provider Transmission Cost Recovery Factor (TCRF), require the use of a minimum billing demand for large load customers, require a large load customer’ s billing to commence at the level of available service at the time it is available, irrespective of whether the large load customer has energized or is fully using available capacity, authorize an investor-owned utility (IOU) DSP to make limited adjustments to its transmission cost recovery from end-use customers to account for delayed cost recovery of billing information related to large load customers, require each IOU DSP to file an annual report detailing the amount of revenues collected from each customer class, and require DSPs to update class allocation factor values annually. New §25.252 relating to Large Load Customer Tariffs sets forth specific terms for inclusion in TSP and IOU-DSP tariffs that govern service to large load customers. The proposed rules also include other minor changes to improve clarity and align with current practices.”