Batch Zero Readiness Meeting Summary 05/15/2026
This meeting included upcoming deadlines, study eligibility requirements, and dynamic model submission expectations for large loads.
Transition to Batch Zero and LLIS Deadlines
ERCOT reiterated that the current LLIS process will effectively end on July 10, 2026. After this date, Batch Zero will become the only available pathway for large load interconnection in ERCOT. July 10 is the final day ERCOT can review and approve individual LLIS studies.
ERCOT clarified that:
- Existing LLIS kick-off meetings and study scoping requirements remain fully in effect until July 10.
- Per PGRR115 timelines, finalizing a study scope can take up to 35 business days after a kick-off meeting.
- Projects that have not held a kick-off meeting by approximately May 21 may not realistically complete the scoping process in time to qualify before the July 10 cutoff.
- ERCOT review of a submitted study does not guarantee approval. Any requested revisions restart the review timeline.
- ERCOT cannot guarantee that new or updated studies submitted after May 28 will be reviewed before July 10.
- ERCOT also noted that studies continue to be reviewed as they are submitted, but timelines are becoming increasingly constrained as the transition date approaches.
Key Batch Zero Dates
Several major deadlines were highlighted:
- May 28, 2026: Last date for LLIS submittal which ERCOT can reasonably guarantee review completion before July 10.
- July 10, 2026: Final day for LLIS approvals and deadline for required dynamic model submissions.
- July 24, 2026: Deadline for Batch Zero qualifying information and applicable TSP determinations.
- August 7, 2026: ERCOT will notify TSPs/DSPs and ILLEs regarding Batch Zero inclusion status and any deficiencies.
- August 31, 2026: Deadline to resolve incomplete data or model deficiencies before exclusion from Batch Zero.
Base Load Treatment and Energization Path
ERCOT explained that PGRR145 is designed to allow qualifying base loads to continue progressing toward energization even while Batch Zero studies are underway.
Specifically:
- Base loads may still qualify for Quarterly Stability Assessments (QSA) tied to planned energization dates.
- Eligible projects may continue progressing toward energization during Batch Zero processing.
- Base loads can still be incorporated into ERCOT’s Network Operations Model while Batch Zero studies are ongoing.
- ERCOT indicated that loads qualifying for QSA treatment may still energize as early as Q1 2027 under the proposed framework.
Dynamic Model Submission Requirements
ERCOT stated that by July 10, ILLEs must submit:
- Dynamic models
- Model parameters
- Supporting technical documentation
- Completed ERCOT Dynamic Working Group (DWG) Large Load Data Survey
- Submissions must be provided both to ERCOT and the interconnecting TSP.
ERCOT emphasized that:
- Projects failing to provide required model information by July 10th will be excluded from Batch Zero.
- If ERCOT identifies deficiencies or incomplete information, feedback will be issued by August 7.
- All deficiencies must be resolved by August 31 to maintain eligibility.
Model Compatibility and Technical Expectations
ERCOT clarified several technical expectations regarding model submissions:
- Models must be compatible with the planning and operations software version specified in the latest DWG Procedure Manual
- For operational loads that do not provide updated models, ERCOT may rely on previously submitted models or assume minimum ride-through capability.
ERCOT also reviewed which categories of projects are exempt from new Batch Zero model submissions, including:
- Loads energized before March 25, 2022
- Loads energized between March 25, 2022 and July 10, 2026
- Loads already qualified for QSA or interim VRT inclusion by May 1, 2026
Voltage Ride-Through (VRT) Testing
ERCOT confirmed that Voltage Ride-Through testing will be performed for applicable Large Computational Loads subject to NOGRR282 requirements.
If a submitted model fails VRT requirements:
- ERCOT will notify the TSP and ILLE.
- The project will remain in Batch Zero and retain its allocation status.
- The ILLE must coordinate with the TSP to update the model before Batch Zero completion.
This clarification was important because ERCOT confirmed that failure of initial VRT testing does not automatically remove a project from Batch Zero participation.
