NOTICE DATE: July 8, 2026

NOTICE TYPE: M-B062326-04 General

SHORT DESCRIPTION: Details for ending the Large Load Interconnection Study process under PGRR115 and submission deadlines for PGRR145 (Batch Zero) on July 10, 2026

INTENDED AUDIENCE: Interconnecting Large Load Customers and other interested stakeholders

DAYS AFFECTED: July 10, 2026

LONG DESCRIPTION:  This notice provides additional clarifications to Market Notice M-B062326-01 Implementation of the Batch Zero Process (PGRR145/NPRR1325), sent June 23, 2026.

Consistent with the PUCT approved language in PGRR145 and as previously detailed in the weekly Batch Zero Readiness meetings, the current Large Load Interconnection Study (LLIS) process codified in the current Planning Guide Section 9 is in effect through end of day on July 10, 2026.  After this time, ERCOT will not conduct further reviews of LLIS studies or restudies and no additional study approvals can be granted.

Additionally, Section 9.2.2(3) of PGRR145 requires submission of dynamic models to ERCOT on or before July 10, 2026.  ERCOT defines the deadline as the ILLE having submitted the required information to BatchZero@ercot.com by July 10, 2026 by 2359 CDT.

ERCOT is also announcing that MOD is reopened for Ad Hoc TPIT updates. MOD will close at 3:00 PM on July 16, 2026. The resulting TPIT report will be posted on July 20, 2026. This will be the final TPIT update prior to the start of Batch Zero. ERCOT strongly encourages all Transmission Service Providers (TSPs) to complete their MOD submissions prior to the July 16 deadline to avoid potential application performance issues.

Reminder of other important dates:

• July 24, 2026 - Deadline for Transmission Service Providers (TSPs) and/or Distribution Service Providers (DSPs) to submit completed Large Load Interconnection details  to ERCOT.
• August 7, 2026 - Deadline for ERCOT to notify TSPs/DSPs of Batch Zero classification results, including eligibility determinations and identified dynamic model or data deficiencies. 

ERCOT will not have sufficient data to provide public reporting on the aggregate amount and classification of Large Loads included in Batch Zero prior to August 7. ERCOT will provide statistics as the data becomes available.

Finally, a reminder that ERCOT will hold its last Batch Zero Market Readiness Webex meeting Thursday, July 9, 2026, 2-3pm

ADDITIONAL INFORMATION: ERCOT has posted the necessary guides, forms, frequently asked questions, and attestations to the Large Load Integration page and stakeholder questions can be sent to LLWG_Feedback@ercot.com.

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at ClientServices@ercot.com.

If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

dg