NOTICE DATE: December 17, 2021

NOTICE TYPE: M-A121721-01 General

SHORT DESCRIPTION: Implementation of the Public Utility Commission of Texas’s (PUCT’s) approval of changes to the minimum contingency level for the Operating Reserve Demand Curve (ORDC)

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: January 1, 2022 and thereafter

LONG DESCRIPTION: At the December 16, 2021 Public Utility Commission of Texas (PUCT) Open Meeting, the PUCT approved an order directing ERCOT to change the minimum contingency level used in the Operating Reserve Demand Curve (ORDC) process from 2,000 MW to 3,000 MW, effective January 1, 2022.  In addition to changing this system parameter on January 1, 2022, ERCOT will be sponsoring an Other Binding Document Revision Request (OBDRR) for the Other Binding Document “Methodology for Implementing Operating Reserve Demand Curve (ORDC) to Calculate Real-Time Reserve Price Adder” to bring the document into alignment with the PUCT order and system implementation.  Per paragraph (13) of ERCOT Protocol Section 6.5.7.3, Security Constrained Economic Dispatch, this OBDRR requires review by the Technical Advisory Committee (TAC) and approval by the ERCOT Board.

ADDITIONAL INFORMATION: In addition to presenting to TAC and the ERCOT Board, ERCOT plans to present on this topic to the Wholesale Market Subcommittee (WMS) on January 5, 2022.

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 [log in to unmask].

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dg