Company: TSLTF
Filing Date: 2025-12-12
Form Type: SUPPL
Source: 0001193125-25-317786
Chunk: 151

Company: TRANSALTA CORP
Filing Date: 2025-12-12
Form: SUPPL
Chunk 151
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 the respective assets of the Company’s subsidiaries that issued the debt, which include PP&E with total carrying amounts of $1.75 billion at Dec. 31, 2024 (2023 — $1.5 billion) and intangible assets with total carrying amounts of $84 million (2023 — $61 million). At Dec. 31, 2024, non-recoursedebt of approximately $75 million (2023 — $85 million) was secured by a first ranking charge over the equity interests of the issuer that issued the non-recoursedebt. The TransAlta OCP bonds have a carrying value of $192 million (2023 — $217 million) and are secured by the assets of TransAlta OCP, including the right to annual capital contributions and OCA payments from the Government of Alberta related to TransAlta’s legacy coal facilities (the TransAlta OCA). Under the TransAlta OCA, the Company receives annual cash payments on or before July 31 of approximately $40 million (approximately $37 million, net to the Company), commencing on Jan. 1, 2017, and terminating at the end of 2030. These payments do not include the OCA payments Heartland is entitled to under its OCA.

| TransAlta Corporation |     | 2024 Integrated Report |     | F78 |

Notes to the Consolidated Financial Statements D. Principal Repayments

|                         |     | 2025 |     |     | 2026 |     |     | 2027 |     |     | 2028 |     |     | 2029 |     |     | 2030 and   
 thereafter |       |     | Total |       |
| Principal repayments(1) |     |      | 566 |     |      | 169 |     |      | 331 |     |      | 309 |     |      | 824 |     |            | 1,493 |     |       | 3,692 |
| Lease                   
 liabilities             |     |      |   4 |     |      |   5 |     |      |   5 |     |      |   5 |     |      |   5 |     |            |   127 |     |       |   151 |

| (1) | Excludes impact of hedge accounting and derivatives. |

E. Restricted Cash As at Dec. 31, 2024, the