Company: TSLTF
Filing Date: 2025-12-12
Form Type: SUPPL
Source: 0001193125-25-317786
Chunk: 312

Company: TRANSALTA CORP
Filing Date: 2025-12-12
Form: SUPPL
Chunk 312
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 bond costs have increased in recent years and the market terms of such bonds have generally become more unfavourable. In addition, the number of companies willing to issue surety bonds has decreased. We could be required to self-fund these obligations should we be unable to renew or secure the required surety bonds for our mining operations or if it becomes more economical to do so. We manage environmental compliance risk by:

| • |     | Seeking continuous improvement in numerous performance metrics such as emissions, safety, land and 
 water impacts and environmental incidents;                                                         |

| • |     | Staffing projects during construction and maintenance activities with expert environmental firms to 
 help assure compliance during the project execution process and long term operations of the asset;  |

| • |     | Conducting environmental, health and safety management system audits to assess conformance to our 
 Total Safety                                                                                      |

| Management System, which is designed to continuously improve performance; |

| • |     | Committing significant experienced resources to work with regulators in Canada, Western Australia 
 and the U.S. to advocate that regulatory changes are well-designed and cost-effective;            |

| • |     | Developing compliance plans that address how to meet or surpass emission standards for GHG, 
 mercury, SO2 and NOx, which will be adjusted as regulations are finalized;                  |

| • |     | Purchasing carbon emissions reduction offsets or credits; |

| • |     | Investing in renewable energy projects, such as wind, solar and hydro generation and storage 
 technologies; and                                                                            |

| • |     | Incorporating                                                                                             
 change-in-law provisions in contracts that allow recovery of certain compliance costs from our customers. |

We are committed to remaining in compliance with all environmental regulations relating to operations and facilities. Compliance with both regulatory requirements and management system standards is regularly audited through our performance assurance policy and results are reported to the GSSC. The laws and regulations in the various markets in which we operate are subject to change, which may materially adversely affect us. Most of the markets in which we operate and intend to operate are subject to significant regulatory oversight and control. We are not able to predict whether there will be any further changes in the regulatory environment, including potential carbon and other environmental regulations, changes in market structure or market design, or changes in other laws and regulations. Existing market rules, regulations and reliability standards are often dynamic and may be revised or re-interpreted,and new laws and regulations may be adopted or become applicable to us or our facilities, which could have a material adverse