Operating Procedures

ERCOT documents its processes and procedures for reliable daily grid operation and emergency actions. Locate these procedures below.

ERCOT sometimes uses Temporary Changes that are separate from the actual procedure. These can be found in the Power Operations Bulletins section of this site. Please note that some Temporary Changes contain market sensitive or protected information. This small set of special procedures containing market sensitive information is not posted.

  • ERCOT DC Tie Operations
    NERC Tagging, Interchange Scheduling, Normal and Emergency Operations, and Inadvertent Accounting
    (08/06/08, .doc, 343.5 KB)
  • Inadvertent procedure_062008v1r2.doc
    Procedure for monitoring and controlling inadvertent flows across the DC Ties
    (06/16/08, .doc, 500.5 KB)
  • Operating Procedure Manual: Frequency Control Desk
    Procedure for the system operator assigned to the Frequency Control Desk, which is responsible for ensuring that frequency within the ERCOT System remains within the tolerances; November 25, 2008, version 3.0, revision 71
    (11/24/08, .doc, 1 MB)
  • Operating Procedure Manual: Operating Period Desk
    Procedure for the system operator assigned to the Operating Period Desk, which is responsible for the oversight of market activities during the operating period, which includes the Hour Ahead and the Operating Hour; February 15, 2008, version 2, revision 23
    (02/13/08, .doc, 358.5 KB)
  • Operating Procedure Manual: Day-Ahead Desk
    Procedure for the system operator assigned to the Day-Ahead Desk, which is responsible for oversight of the day-ahead market operation within ERCOT; November 1, 2008, version 3.0, revision 37
    (10/30/08, .doc, 1.1 MB)
  • Operating Procedure Manual: Operating Procedures Maintenance and Development
    Process for initial development, review, approval, control, distribution, archiving, temporary change and revision of operating procedures used within ERCOT System Operations, including steps to assist the procedure developer in determining content and task details; February 28, 2008, version 2, revision 9
    (07/30/08, .doc, 1.2 MB)
  • Operating Procedure Manual: Transmission and Security Desk
    Procedure for the system operator assigned to the Transmission and Security Desk, which monitors system performance as well as planned and forced outages;November 25, 2008, version 3, revision 97
    (11/24/08, .doc, 1.3 MB)
  • Operating Procedures Manual: Shift Supervisor Desk
    Manual providing the ERCOT shift supervisor with the information to assist in addressing technical and operational issues, disturbances, disputes, system performance and reports; November 25, 2008, version 3, revision 52
    (11/20/08, .doc, 1.2 MB)
  • Steady-State Voltage Control Procedures
    Voltage profile for the ERCOT system for transmission/distribution service providers; August 2001, version 1
    (05/30/07, .doc, 42 KB)