NOTICE DATE:  February 16, 2015

NOTICE TYPE:  W-B121614-02 Operations

SHORT DESCRIPTION:  Communication of System Operating Limits Methodology for the Planning and Operations Horizons

INTENDED AUDIENCE:  NERC-registered Transmission Operators and Transmission Planners

DAY AFFECTED:  March 1, 2015

LONG DESCRIPTION:  ERCOT ISO, as the Reliability Coordinator and Planning Authority, is required to issue any changes to its System Operating Limit (SOL) Methodology to each Transmission Operator and Transmission Planner in its area.  Attached is a new revision to the ERCOT planning horizon and operations horizon SOL methodology, based on comments received and additional review conducted since the previous Market Notice on December 16, 2014.  This version will become effective on March 1, 2015.  ERCOT will provide a documented response within 45 calendar days of receiving any documented technical comments on the methodology.  Comments can be submitted directly to Stephen Solis at [log in to unmask].  

ADDITIONAL INFORMATION:  The new revision of this methodology will also be posted on the ERCOT Market Information System (MIS) on the Grid – Long-Term Planning page in the Long-Term Planning Methodologies portlet in the ERCOT System Operating Limit (SOL) Methodology link. 

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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