NOTICE DATE:  December 16, 2014
NOTICE TYPE:  W-B121614-01 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 Methodology to any Transmission Operator or Transmission Planner in its area.  Attached is a new revision to the ERCOT planning horizon and operations horizon System Operating Limit (SOL) methodology.  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]<mailto:[log in to unmask]>.  Please provide comments before January 23, 2015 to allow time for edits and responses before the effective date.
ADDITIONAL INFORMATION:  The new revision of this methodology will also be posted on the ERCOT Market Information System (MIS<http://www.ercot.com/gridinfo/planning/index.html>) 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]<mailto:[log in to unmask]>.
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