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NOTICE DATE:  April 26, 2019

NOTICE TYPE:  M-A042619-01 Release - Retail/Wholesale

SHORT DESCRIPTION:  Implementation of market-facing changes for May 2019

INTENDED AUDIENCE:  ERCOT Market Participants

DAYS AFFECTED:  May 28 - 30, 2019

LONG DESCRIPTION:  ERCOT will be implementing a number of market-facing changes in the production environment on May 28 - 30, 2019 for several systems. Please see the attached spreadsheet for the description of each change.

ADDITIONAL INFORMATION:  ERCOT systems may experience intermittent service interruptions during the implementation period. The systems include, but are not limited to:

********* Components of the ERCOT Market Information System (MIS) including:



o   Report publishing to the MIS

o   Downloading of extracts and reports from MIS and External Web Services (EWS)

o   MIS and ERCOT.com dashboards and displays

Information on upcoming releases can be found in the Project Priority List on the Projects<http://www.ercot.com/services/projects/> page of ERCOT.com.

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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