July 29, 2014 Annual Attachment O Stakeholder Meeting Ameren Missouri Purpose: Pursuant to the updated protocols established in FERC Docket No. ER13-2379, Ameren Missouri must calculate and post its formula transmission rate calculations, supporting work papers and Annual Update by June 1st of each year. Also, Ameren Missouri is required to host a stakeholder meeting to discuss this posting by September 1st of each year. The rate information for the 2013 rate year is posted on Ameren’s page of the MISO OASIS node which can be accessed at http://www.oasis.oati.com/AMRN/index.html When: August 18, 2014 at 9:30 am Where: Ameren Power Operations Service Auditorium 3700 South Lindbergh St. Louis, MO 63127 TEL: 1-314-957-3203 Phone: 1-866-418-3591 Pass Code 477302 RSVP: Please contact Kay Tapscott if you plan to attend in person or participate by phone. ktapscott@ameren.com or 217-424-8191 A presentation will be posted prior to the meeting.