NOTICE DATE: December 19, 2014 NOTICE TYPE: W-A121914-01 Operations SHORT DESCRIPTION: ERCOT Frequency Bias change for 2015 INTENDED AUDIENCE: QSE Operations Personnel DAY AFFECTED: January 6, 2015 LONG DESCRIPTION: The ERCOT Frequency Bias will change to 707 MW/0.1 Hz on January 6, 2015, and will remain effective until further notice. The current ERCOT Frequency Bias of 699 MW/0.1 Hz will remain in effect through 10:00 CST on January 6, 2015. 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