An anonymous director reports

MEDIA ADVISORY: TRANSALTA THIRD QUARTER 2023 RESULTS AND CONFERENCE CALL

TransAlta Corp. will release its third quarter 2023 results before markets open on Tuesday, Nov. 7, 2023. A conference call and webcast to discuss the results will be held for investors, analysts, members of the media and other interested parties on the same day beginning at 9 a.m. Mountain Time (11 a.m. ET). The media will be invited to ask questions following analysts.

Third quarter 2023 conference call

Toll-free North American participants call:  1-888-664-6392

Webcast:  A webcast will be available.

Related materials will be available on the investor centre section of TransAlta's website. If you are unable to participate in the call, the instant replay is accessible at 1-888-390-0541 (Canada and United States toll free) with TransAlta passcode 502345 followed by the number sign. A transcript of the broadcast will be posted on TransAlta's website once it becomes available.

About TransAlta Corp.

TransAlta owns, operates and develops a diverse fleet of electrical power generation assets in Canada, the United States and Australia with a focus on long-term shareholder value. TransAlta provides municipalities, medium-sized and large industries, businesses, and utility customers with clean, affordable, energy-efficient and reliable power. Today, TransAlta is one of Canada's largest producers of wind power and Alberta's largest producer of hydroelectric power. For over 111 years, TransAlta has been a responsible operator and a proud member of the communities where it operates and where its employees work and live. TransAlta aligns its corporate goals with the United Nations sustainable development goals and its climate change strategy with CDP (formerly Climate Disclosure Project) and the Task Force on Climate-related Financial Disclosures (TCFD) recommendations. TransAlta has achieved a 68-per-cent reduction in GHG (greenhouse gas) emissions or 22 million tonnes since 2015, and has received scores of A minus from CDP and AA from MSCI.