Company: TSLTF
Filing Date: 2025-12-12
Form Type: SUPPL
Source: 0001193125-25-317786
Chunk: 263

Company: TRANSALTA CORP
Filing Date: 2025-12-12
Form: SUPPL
Chunk 263
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 million (2023 – $630 million). In addition, TransAlta continues to invest in emerging abatement technologies and solutions. In 2024, our investments in low-carbonresearch and development were $8 million (2023 – $4 million). In 2024, adjusted EBITDA from renewable energy generation was $632 million (2023 – $716 million). Our renewable fleet makes our overall portfolio more resilient to climate-related risks, provides increased flexibility in generation and creates incremental environmental value through environmental attributes. Our revenue in 2024 from environmental attribute sales was $79 million (2023 – $36 million). The disclosure of TransAlta’s financial metrics related to our climate-related risks and opportunities partially aligns with the IFRS S2 and TCFD recommendations. A summary of our climate-related financial metrics is presented below.

| Year ended Dec. 31 (in millions of Canadian dollars)           |     | 2024 |     |     | 2023 |     |     | 2022 |       |
|:---------------------------------------------------------------|:----|:-----|----:|:----|:-----|----:|:----|:-----|------:|
| Growth capital expenditures for renewable energy generation(1) |     |      |  61 |     |      | 630 |     |      |   666 |
| Renewable energy adjusted EBITDA(2)                            |     |      | 632 |     |      | 716 |     |      |   860 |
| Environmental and tax attributes revenue(3)                    |     |      |  79 |     |      |  36 |     |      |    53 |
| Renewable energy revenue(4)                                    |     |      | 839 |     |      | 902 |     |      | 1,014 |
| Investments in low-carbon research and                         
 development(5)                                                 |     |      |   8 |     |      |   4 |     |      |    12 |

| (1) | Growth capital expenditures include amounts deployed for growth projects and acquisitions related                                                                                                                                                       
 to renewable energy generation. This includes the Garden Plain wind project and the Northern Goldfields solar project, both completed in 2023, and the White Rock and Horizon Hill wind projects, both completed in 2024. This excludes the Mount Keith 
 transmission expansion and Mount Keith west network upgrade projects.                                                                                                                                                                                   |

| (2) | Adjusted EBITDA from