***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. *****

NOTICE DATE: May 19, 2021


SHORT DESCRIPTION: Implementation details of NPRR974, NPRR978 and NPRR1048


DAYS AFFECTED: June 1, 2021

LONG DESCRIPTION: On June 1, 2021, Protocol language associated with Nodal Protocol Revision Request (NPRR) 974, Capacity Insufficiency Operating Condition Notice (OCN) Transparency, NPRR978, Alignment with Amendments to PUCT Substantive Rule 25.505, and NPRR1048, Clarification on NPRR978 Short-Term Adequacy Reports, will be implemented.

NPRR 974 requires ERCOT to include additional data about the amount of the projected capacity available in the Short-Term System Adequacy Report. Specifically, paragraphs (1)(i) and (1)(j) of Section 3.2.3, System Adequacy Reports, will be implemented to include available capacity and available capacity for reserves at a system-wide basis in the following report.

NPRR978 aligns Nodal Protocols with P.U.C. SUBST. R.  25.505, Reporting Requirements and the Scarcity Pricing Mechanism in the Electric Reliability Council of Texas Power Region, in Public Utility Commission of Texas (PUCT) Project No. 48721, Rulemaking Proceeding To Amend 16 TAC 25.505, Relating to Resource Adequacy in the Electric Reliability Council of Texas Power Region and to Repeal 16 TAC 25.508, Relating to the High System-Wide Offer Cap in the Electric Reliability Council of Texas Power Region. NPRR1048 requires certain reports in Section 3.2.3 to be aggregated by Forecast Zone.

Specifically, paragraphs (1)(a), (b), (c), (f), and (g) of Section 3.2.3 will be changed from aggregation at a system-wide base to a Forecast Zone basis in accordance with amended item (d) of P.U.C. SUBST. R.  25.505.

ADDITIONAL INFORMATION: Pursuant to Nodal Protocol Section 21.6, Nodal Protocol Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.  

NPRR974, NPRR978 and NPRR1048 and associated documents can be found on the ERCOT website.

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call 248-3900 or contact ERCOT Client Services via email at [log in to unmask]

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.