***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: December 28, 2018 NOTICE TYPE: W-A122818-01 Operations SHORT DESCRIPTION: Notification of Change of Generation Resource Designation for NRG Texas Power LLC – SRB_SRB_G1 and SRB_SRB_G2 INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: January 23, 2019 LONG DESCRIPTION: On December 28, 2018, ERCOT received a Notification of Change of Generation Resource Designation (NCGRD) for each of the following Generation Resources: * NRG Texas Power LLC – SRB_SRB_G1; and * NRG Texas Power LLC – SRB_SRB_G2 The NCGRDs state that the above-referenced Generation Resources, which are currently mothballed, will become decommissioned and retired permanently as of January 23, 2019. ADDITIONAL INFORMATION: Pursuant to ERCOT Protocol Section 3.14.1.9(2), ERCOT has posted the notifications in the list titled “Notice of Change of Generation Resource Designation” on the Generation page<https://mis.ercot.com/pps/tibco/mis/Pages/Grid+Information/Generation> of the Market Information System (MIS) Secure Area. An ERCOT Digital Certificate is required to access the MIS. 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 a public 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