NOTICE DATE:  April 15, 2016

NOTICE TYPE:  W-A041516-01 Operations

SHORT DESCRIPTION:  Potential Need for a Lobo – North Edinburgh Generic Transmission Constraint

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  Expected October 2016

LONG DESCRIPTION: A Full Interconnection Study (FIS) completed by AEP Texas Central Company for a proposed Generating Resource indicates that ERCOT may need to create a Generic Transmission Constraint (GTC) near the Lobo – North Edinburgh 345 kV line after this line is commissioned and the proposed Generation Resource is synchronized.  The potential GTC would be established to address instability issues with existing and planned Generation Resources in the area. 

The purpose of this notice is to provide notification to all ERCOT Market Participants about the potential need for the new GTC.  No details associated with this potential GTC are available at this time as ERCOT has not completed its own study which would include the determination of how the potential GTC would be defined.  In the event a GTC is defined, ERCOT will provide that information on the MIS Secure Area.

Details associated with all existing GTCs can be found on the ERCOT Market Information System (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].

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