In 2025, TransAlta conducted an environmental assessment and disclosed corporate waste management data in accordance with recognized sustainability reporting standards.The company provided a breakdown of its waste by type (hazardous vs non-hazardous) and treatment method (recovery vs disposal), enabling greater transparency into its waste handling and environmental practices.
| Metric (tonnes) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Waste Generated | 188,000a | 384,000a | 479,000a | |
Total Waste Recovered | 187,000a | 383,000a | 478,000a | |
Total Hazardous Waste Generated | 3,525a | 9,358a | 17,010a | |
Non-Hazardous Waste Disposed | 560a | 820a | 1,300a |
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In 2025, TransAlta generated a total of 188,000metric tonnes of waste.a
Of this amount, 99.47% of TransAlta's total waste generated was recovered through methods such as recycling, reuse, or composting, while 0.31% was disposed of through landfilling, incineration, or combustion.a
In 2025, TransAlta reported a total waste generation of 188,000 metric tonnes, of which 99.47% was recovered through recycling, reuse, or composting.This high recovery rate suggests that TransAlta has implemented strong circular economy practices and actively prioritizes sustainable waste management.a
Since 2023, TransAlta's total waste generation decreased by 60.75%, including a further 51.04% drop in 2025, highlighting a consistent and deliberate reduction in waste production over time.a
Over the same period, TransAlta's waste recovery rate remained stable both in the long term and in 2025, suggesting limited progress, or consistent recovery performance, without major shifts in strategy.a
Overall, TransAlta’s waste generation and recovery data show a mixed and inconsistent trend. A deeper analysis of the company's activities, industry benchmarks, and operational changes is needed to assess its sustainability performance more precisely.
In 2025, TransAlta generated a total of 188,000 metric tonnes of waste.a
Of this amount, 1.88% of TransAlta's total waste generated of was classified as hazardous waste, characterized by properties such as toxicity, flammability, corrosiveness, or reactivity that may pose risks to human health, ecosystems, or the environment.98.17% was identified as non-hazardous waste, generally considered less harmful and subject to lighter regulatory controls.a
Since 2023, TransAlta's total waste generation decreased by 60.75%, with an additional 51.04% decline in 2025, suggesting a consistent and deliberate effort to minimize waste generation at the source.a
Over the same period, TransAlta reduced the hazardousness of its waste by 47.2%, with a further 23.06% decline in 2025, suggesting a sustained and meaningful shift toward safer waste profiles and lower environmental impact.a
Overall, TransAlta has made consistent and substantial progress in reducing both the quantity and the danger of its waste, highlighting a strong, well-executed waste strategy focused on minimizing environmental impact.a
In 2025, TransAlta reported that 3,525 metric tonnes of its total waste output were classified as hazardous. This represents 1.88% of its overall waste generation.a
The company treated this hazardous waste using a combination of methods.A majority (99.29%) was diverted from disposal through recovery-oriented treatments such as recycling or reuse. This suggests that TransAlta has established processes to reduce the environmental burden of its most harmful waste streams.a