NOTICE DATE: September 21, 2015 NOTICE TYPE: M-A082015-05 Release - Retail/Wholesale SHORT DESCRIPTION: Rescheduled - Implementation of market-facing changes for September 2015 INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: September 21 - 25, 2015 LONG DESCRIPTION: ERCOT has delayed the R5 implementation start time for the market-facing changes in the production environment originally scheduled for September 21 - 25, 2015. This delay is due to ongoing activities communicated in Market Notice M-A09202015-01, Unplanned Outage of some ERCOT systems. Further information will be provided as it becomes available. 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. mm