Arkansas Electric Cooperative Corporation (AECC) July 1, 2015 Subject: AECC Annual Update Meeting Date: Wednesday, July 29, 2015 Time: 2:00 p.m. Central, 3:00 p.m. Eastern AECC cordially invites you to participate in its Annual meeting for the 2015 MISO Attachment O transmission update. The purpose of this meeting is to present information explaining the AECC update that was posted on the MISO website on May 29, 2015 and allow Interested Parties an opportunity to seek information and clarifications from AECC about the Annual Update. Pursuant to the updated formula rate protocols established in FERC Docket No. ER13-2379, AECC must calculate and post its formula revenue requirement calculations, supporting documentation, and workpapers, for the previous calendar year by June 1 of each year. In addition AECC is required to hold an open meeting among Interested Parties by September 1 of each year to discuss this posting. AECC’s revenue requirement information for the 2014 calendar year is posted on the AECC page of the MISO OASIS which can be accessed through the MISO website at: https://www.misoenergy.org/MarketsOperations/TransmissionSettlements/Pages/ArkansasElect ricCooperativeCorporation(AECC).aspx A webcast will be available using the following link: http://gtpower.adobeconnect.com/annualmeeting The audio conference information is as follows: Dial-in Number: 1-855-217-4155