對這份通知有什麼疑問嗎？撥打下面的免費電話或掃描二維碼瞭解更多 免費電話-1-866 964-0492 www.computershare.com/ noticeandaccess Notice代理材料的可用性 TransAlta公司年度股東大會 會議日期和地點： 時間：4月25日，2024其中：僅虛擬會議格式通過現場音頻 摺疊 上午11：00(山區時間)https://web.lumiagm.com/471294222網絡直播，您將收到此通知，通知您上述股東大會的代理材料可在互聯網上獲得 。本通訊僅概述了您可以在互聯網上獲得的更完整的代理材料。我們提醒您在投票前查閲管理代理通函和其他代理材料中包含的所有重要信息。 管理代理通函和其他相關材料可在以下網址獲得： www.envisionreports.com/ZTMQ2024或 www.sedarplus.ca 如何獲得代理材料的紙質副本 股東可以要求通過郵寄免費接收當前會議材料的紙質副本。索取紙質副本的請求 可使用隨附的投票指導表或 代理上顯示的控制編號進行。為確保您在投票截止日期和會議日期之前收到材料，所有申請必須在2024年4月5日之前收到。如果您確實要求提供當前的材料，請注意，將不會發送另一份投票指示表格/代理；請保留您當前的號碼用於投票。 摺疊 對於控制號碼為15位的持有人： 通過撥打免費電話(北美境內)-1-866-962-0498或直接從北美以外的 北美-(514)982-8716請求材料，並輸入您在投票指示 表格或代理上顯示的 控制號碼。 若要在會議日期後獲取材料的紙質副本，請執行以下操作：對於擁有16位控制號碼的持有者： 如需索取材料，請撥打北美境內的免費電話，或直接從北美以外的地區撥打電話請求材料。 要在會議結束後獲取材料的紙質副本，請聯繫01YS0C CPUQC01.E.INT/000001/i123424-5672-7 c1.1 P191

Shareholder Meeting Notice The resolutions to be voted on at the meeting are listed below along with the sections within the Management Proxy Circular where disclosure regarding the matter can be found. 1. Election of Directors - Electing twelve (12) directors of the Company at the Meeting (information respecting the election of directors may be found in the Management Proxy Circular under “Business of the Meeting — Election of Directors”). 2. Appointment of Auditors - The reappointment of Ernst & Young LLP, as the auditors of the Company (information respecting the reappointment of auditors may be found in the Management Proxy Circular under “Business of the Meeting — Reappointment of Auditors”). 3. Say-on-Pay - Accepting the Company’s approach to executive compensation (information respecting executive compensation may be found in the Management Proxy Circular under “Business of the Meeting — Advisory Vote on Executive Compensation”). Fold Voting PLEASE NOTE - YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must vote using the methods reflected on your enclosed Voting Instruction Form or proxy. Your Voting Instruction Form or proxy must be received by 11:00 am (Mountain Time) on April 23, 2024. PLEASE VIEW THE MANAGEMENT PROXY CIRCULAR PRIOR TO VOTING Annual delivery of financial statements • Only Registered and Beneficial holders who opted to receive financial statements will be sent paper copies. Fold 01YS1B 24-5672-7 C1.1 P192