NOTICE DATE: October 12, 2023

NOTICE TYPE: M-A100523-02 Operations

SHORT DESCRIPTION: October 14th, 2023 Annular Solar Eclipse

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: October 14, 2023

LONG DESCRIPTION: On Saturday, October 14, 2023, an annular solar eclipse will pass across the ERCOT region. The eclipse will impact the output of PhotoVoltaic Generation Resources (PVGRs) in ERCOT between 10:15AM and 1:40PM CDT. All Market Participants are requested to monitor the operating conditions for this day and make adjustments to Current Operating Plans as needed.

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 ClientServices@ercot.com.

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