***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: September 8, 2017 NOTICE TYPE: M-A090717-02 Extracts SHORT DESCRIPTION: Update to the Missed Reports due to SCED Publishing Issues during Operating Day September 6, 2017 INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: September 8, 2017 LONG DESCRIPTION: The Security-Constrained Economic Dispatch (SCED) post-process issues from the early morning of September 6, 2017 are impacting ERCOT's ability to publish complete post-Operating Day reports, including 48-Hour Disclosure Reports. The missing information is specific to the SCED executions from 00:03:11 to 00:45:11. A list of impacted reports and specific files within those reports is included below. ERCOT will be posting the information that is available and is continuing to evaluate possible solutions for publishing complete versions of the identified reports. A follow up Market Notice will be provided regarding whether and when updated and complete reports can be published. Report Name EMIL ID Report ID Report Files Affected 48 Hr DAM and SCED Energy Curves NP3-908-ER 13054 48 Hr Aggregate Supply Curve for Non-IRR 48 Hr Aggregate Supply Curve for Wind Resources 48 Hr Aggregate Energy Demand Curve for CLRs 48 Hr Aggregate Supply Curve for Photovoltaic Resources 48 Hr Aggregate Supply Curve for Non-IRR by Disclosure Areas 48 Hr Aggregate Supply Curve for Wind Resources by Disclosure Areas 48 Hr Real Time Gen and Load Data Reports NP3-910-ER 13056 48 Hr Aggregate Output Schedules 48 Hr Aggregate Generation Summary 48 Hr Aggregate Load Summary Aggregate Dynamically Scheduled Resources and Loads Aggregate Load Summary by Disclosure Area 48 Hr Aggregate Output Schedule by Disclosure Area 48 Hr Aggregate Generation Summary by Disclosure Area 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 _________________________________________________________________________________________________ NOTICE DATE: September 7, 2017 NOTICE TYPE: M-A090717-01 Extracts SHORT DESCRIPTION: Missed Reports due to SCED Publishing Issues during Operating Day September 6, 2017 INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: September 6, 2017 LONG DESCRIPTION: During the early morning of September 6, 2017 for the Security-Constrained Economic Dispatch (SCED) executions from 00:03:11 to 00:45:11, ERCOT encountered issues publishing the SCED solutions to the database. Only parts of the SCED solutions were successfully published to the databases including Resource Base Points and Resource LMPs. Therefore, the SCED dispatch was not impacted by this issue. However, some SCED post-processes including SCED Settlement Point Prices calculation may be impacted. As a result of incomplete publishing of SCED solutions in the database, several of the Current Day Reports (CDR) and their counterpart Public Dashboards associated with those specific SCED intervals may have been impacted. ERCOT will be performing a price correction for this period, per the public market notification that was posted on September 6, 2017 at 17:03:15. Corrected prices will be posted in the RTM Price Corrections report (NP4-197-M) on the MIS Public Area. Market Participants who previously downloaded pricing reports or obtained prices from External Web Services for 09/06/2017 should refer to the RTM Price Corrections report for updated information. Price corrections will be posted on the MIS Public Area as soon as possible but no later than 16:00 on September 8, 2017. ERCOT is also currently analyzing data that is used in any post Operating Day reports, which includes all 48-Hour Disclosure Reports. Due to this additional validation, some reports may post later than expected. Listed below are the CDR reports and intervals affected during this time: Report Name EMIL ID Report ID Intervals Affected Report Status Summary Report of HDL and LDL NP6-915-CD 13081 11 intervals between 00:03-00:45 Missing - will not be rerun Real-Time ORDC and Reliability Deployment Price Adders and Reserves by SCED Interval NP6-323-CD 13221 11 intervals between 00:03-00:45 Missing - will not be rerun. Corrected prices for the affected intervals will be posted on the MIS Public Area. SCED Shadow Prices and Binding Transmission Constraints NP6-86-CD 12302 1 interval at 01:00 Posted with incomplete data. Corrected prices for the affected intervals will be posted on the MIS Public Area. SCED Shift Factors SYS-608-CD 12354 1 interval at 01:00 Posted with data missing for the affected interval - will not be rerun Real-Time ORDC and Reliability Deployment Prices for 15-minute Settlement Interval NP6-324-CD 13220 4 intervals at 00:15, 00:30, 00:45, 01:00 Posted with impacted data. Corrected prices for the affected intervals will be posted on the MIS Public Area. LMPs by Electrical Buses NP6-787-CD 11485 11 intervals between 00:03-00:45 Posted with impacted data. Corrected prices for the affected intervals will be posted on the MIS Public Area. LMPs by Resource Nodes, Load Zones, and Trading Hubs (Dashboard 10.a and 10.b) NP6-788-CD 12300 11 intervals between 00:03-00:45 Posted with impacted data. Corrected prices for the affected intervals will be posted on the MIS Public Area. Settlement Point Prices at Resource Nodes and Hubs and Load Zones NP6-905-CD 12301 4 intervals at 00:15, 00:30, 00:45, 01:00 Posted with impacted data. Corrected prices for the affected intervals will be posted on the MIS Public Area. 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