An anonymous director reports

TRANSALTA CORPORATION ANNOUNCES RESULTS OF THE ANNUAL AND SPECIAL MEETING OF SHAREHOLDERS AND ELECTION OF ALL DIRECTORS

TransAlta Corp. held its annual and special meeting of shareholders on April 28, 2023. The total number of common shares represented by shareholders at the meeting and by proxy was 151,051,401, representing 56.49 per cent of the company's outstanding common shares.

The following resolutions were considered by shareholders.

Election of directors

The 13 director nominees proposed by management were elected. The votes by ballot were received as shown in an attached table.

Appointment of auditor

The appointment of Ernst & Young LLP to serve as the auditor for 2023 was approved. The votes by ballot were received as shown in an attached table.

Advisory vote on executive compensation (also known as say on pay)

The advisory vote on the company's approach to executive compensation or say on pay was approved. The votes by ballot were received as shown in an attached table.

Increase of shares issuable under the share unit plan

The resolution approving the company's increase of shares issuable under the share unit plan was approved. The votes by ballot were received as shown in an attached table.

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 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 the company 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 A from MSCI.