***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: March 27, 2018 NOTICE TYPE: W-B032718-01 Operations SHORT DESCRIPTION: ERCOT frequency bias change for 2018 INTENDED AUDIENCE: QSE Operations Personnel DAY AFFECTED: April 5, 2018 LONG DESCRIPTION: The current ERCOT frequency bias is 764 MW/0.1 Hz, and will remain in effect through 10:00 CDT on April 5, 2018, at which time it will change to 759 MW/0.1 Hz. 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/sa