Exhibit 99.1

SUPPLIER CODE OF CONDUCT
PURPOSE AND SCOPE
The Supplier Code of Conduct (the “Code”) sets out the principles and standards expected of suppliers, their employees and contractors (collectively, the “Suppliers”) to meet while in the provision of goods and/or services to TransAlta Corporation and its subsidiaries and affiliates (collectively, “TransAlta”). The Code is a representation of TransAlta’s values and reflects the emphasis placed on these values as an organization. Suppliers are to provide acknowledgement of this Code as a condition of engagement. It is also expected that Suppliers will comply with all laws, rules and regulations applicable to TransAlta’s business in the countries in which it operates, including but not limited to those related to business practices, labour and employment, immigration, human rights, modern slavery and human trafficking, health and safety, privacy, confidentiality, conflict of interest, bribery and corruption. Violations or potential violations of this Code may result in termination. The Code is not to be read in lieu of but in addition to your obligations as set out in any standard terms and conditions or other contractual agreements with TransAlta.
We expect our Suppliers to adhere to and implement the principles and practices expressed in the Code, as such compliance with the Code is the responsibility of the Supplier. TransAlta may wish to monitor a Supplier’s compliance to the Code using Suppliers’ self-evaluation, implementing ongoing improvement programs and requesting information. TransAlta expects cooperation and transparency during the compliance verification process.
HEALTH AND SAFETY
TransAlta is committed to the health and safety of its employees, Suppliers and the public. Suppliers are expected to conduct work in a safe manner and in compliance with all applicable safety rules, laws, procedures, and standards.
| • | | Public Safety: TransAlta is dedicated to the protection of its people, the public, the environment and TransAlta’s physical assets. Suppliers should take every precaution to protect their people, the public, the environment and TransAlta’s physical assets. Suppliers are accountable for following established procedures and working in a manner that safeguards themselves, co-workers, the public, the environment and TransAlta’s assets. |
| • | | Emergency Preparedness: Suppliers are to possess the required competencies and training to perform job responsibilities, including risk mitigation, emergency response planning and preparedness, hazard identification, hazard control and monitoring hazard control effectiveness. |