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NOTICE DATE:  September 19, 2018

NOTICE TYPE:  W-A091918-01 Operations

SHORT DESCRIPTION:  Update to the Generic Limits for the Panhandle Generic Transmission Constraint

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  November 1, 2018

LONG DESCRIPTION:  ERCOT has completed an updated assessment of generic limits associated with the Panhandle Generic Transmission Constraint (GTC). Included in the update are the system strength limits for the Panhandle region, based on corrections to the sub-transient reactance used to determine short-circuit current output of generators. Voltage stability limits will not see any change in this update.

The purpose of this Market Notice is to provide contemporaneous notification to all ERCOT Market Participants of the update to the projected values for the Panhandle GTC limits.

Details associated with all existing GTCs can be found on the ERCOT MIS Secure Area in the "Generic Transmission Constraints" portlet.  A Digital Certificate is required to access the MIS Secure Area.

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]<mailto:[log in to unmask]>.

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