Company: TSLTF
Filing Date: 2025-12-12
Form Type: SUPPL
Source: 0001193125-25-317786
Chunk: 258

Company: TRANSALTA CORP
Filing Date: 2025-12-12
Form: SUPPL
Chunk 258
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 | 2022 |      |
| Australia                         |     |      | 0.9 |     |      |  1.0 |     |      |  0.9 |
| Canada                            |     |      | 5.4 |     |      |  5.3 |     |      |  5.2 |
| United States                     |     |      | 3.3 |     |      |  4.6 |     |      |  4.1 |
| Total scope 1 and 2 GHG emissions |     |      | 9.6 |     |      | 10.9 |     |      | 10.3 |

| M106 |     | TransAlta Corporation |     | 2024 Integrated Report |

Management’s Discussion and Analysis In 2024, our GHG emissions (scope 1 and 2) were 9.6 million tonnes as a result of normal operating activities. This represents a 12 per cent decrease from 2023. As a result, in 2024 our scope 1 and 2 GHG emissions intensity decreased to 0.35 tCO 2e/MWh from 0.41 tCO 2e/MWh in 2023. TransAlta plans to cease generation from our single remaining coal unit by the end of 2025, which will further reduce the Company’s emissions. TransAlta sells the environmental attributes generated from our renewable energy facilities and does not subtract this amount from our total GHG emissions (scope 1 and 2). However, it should be noted that TransAlta’s customers are reporting GHG emissions reductions using our renewable energy assets, projects and operations. GHG emissions are verified to a level of reasonable assurance in locations in which we operate within a carbon regulatory framework. Any historical revisions to GHG data will be captured and reported in future disclosure. The majority of our GHG emissions result from carbon dioxide emissions from stationary combustion from coal-and natural-gas-firedgeneration. The following table highlights our scope 1 and 2 GHG emissions reductions since 2015 and our targeted emissions in 2026 in million tonnes of CO 2e. The actual GHG emissions for the Company in 2026 will vary from that presented below depending on, among other things, the growth of the Company, including its on-sitegeneration business.

| Year ended Dec. 31                |     | 2026 (forecast) |     |