***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: August 15, 2017 NOTICE TYPE: M-A072817-02 Release - Retail/Wholesale SHORT DESCRIPTION: Updated Dates - Implementation of market-facing changes for August 2017 INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: August 29 - 31, 2017; September 11 - 13, 2017 LONG DESCRIPTION: Due to upcoming hardware maintenance, ERCOT has moved the implementation of market-facing changes in the production environment originally scheduled for August 29 - 31, 2017 to September 11 - 13, 2017. More information regarding the market-facing changes will be communicated with a Market Notice ten days prior to the new release window. ADDITIONAL INFORMATION: Information on upcoming releases can be found on the Project Priority List (PPL)<http://www.ercot.com/services/projects/>. 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]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com. sa