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NOTICE DATE: June 14, 2021

NOTICE TYPE: W-B061421-01 Operations

SHORT DESCRIPTION: Steady State Working Group Transitioning to PSS/E Version 35

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: July 14, 2021

LONG DESCRIPTION: On July 14, 2021, the Steady State Working Group (SSWG) will transition to PSS/E version 35 bus-branch format to develop the Steady State base cases as a part of SCR789 - Update NMMS Topology Processor to PSSE 34 Capability. Note that the title of SCR789 remains unchanged from the original submission and references version 34 but SSWG will be updating to version 35.

The Steady State base cases to be published in July will be provided in version 33. Starting in October 2021 all cases will be published in PSS/E version 35 bus-branch format.

ACTION REQUIRED: Ensure PSS/E version 35 is installed

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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