***** EXTERNAL email. Please be cautious and evaluate before you click on links, open attachments, or provide credentials. ***** NOTICE DATE: March 28, 2017 NOTICE TYPE: W-A032817-01 Operations SHORT DESCRIPTION: ERCOT Frequency Bias change for 2017 INTENDED AUDIENCE: QSE Operations Personnel DAY AFFECTED: April 4, 2017 LONG DESCRIPTION: The ERCOT Frequency Bias will change to 764 MW/0.1 Hz on April 4, 2017, and will remain effective until further notice. The current ERCOT Frequency Bias of 739 MW/0.1 Hz will remain in effect through 10:00 CDT on April 4, 2017. 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