NOTICE DATE: October 15, 2020

NOTICE TYPE: M-A081820-05 General

SHORT DESCRIPTION: Rescheduled Testing of the New MIS Production website

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: Saturday, October 17, 2020; 8:00 - 9:30 am

LONG DESCRIPTION: On Saturday, October 17, 2020, from 8:00 to 9:30 am, ERCOT will be conducting tests on the new MIS Production website. There are no anticipated impacts to performance or functionality. However, users may experience a slight degradation of the following systems during this time:

• MIS downloads
• EMIL web interface

ACTION REQUIRED: No action is required.

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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dg