In 2025, Alstom completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
Alstom has also provided a category-level breakdown for 11 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Scope 1 | 87,038a | 86,430a | 94,000b | |
Total Scope 2 | ||||
Market-Based | 40,523a | 53,526a | 85,000b | |
Location-Based | 133,303a | 131,678a | 134,000b | |
Total Scope 3 | 48,674,709a | 44,816,161a | 6,786,000b | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 4.3492a | 4.5445a | 5.2221b |
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In 2025, the total operational greenhouse gas (GHG) emissions of Alstom amounted to 220,341 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2).a
Compared to 2024, the total operational greenhouse gas (GHG) emissions of Alstom increased by 1.02%, suggesting that the company faced challenges in reducing its emissions from its core operations.a
In 2025, the total Scope 1 emissions of Alstom were 87,038 metric tons of CO₂ equivalent (tCO₂e).a
Since 2020, Alstom's Scope 1 emissions have increased by 50.07%, reflecting a rising long-term trend in Scope 1 emissions over time.ac
Compared to the previous year (2024), Alstom's Scope 1 emissions remained relatively stable, indicating that Alstom's emissions have plateaued with no significant change in its operational footprint.a
In 2025, Alstom reported Scope 2 greenhouse gas (GHG) emissions of 40,523 tCO₂e using the market-based method and 133,303 tCO₂e using the location-based method.a
Compared to the previous year (2024), Alstom's Scope 2 emissions (Location-Based) have remained relatively stable, indicating that Alstom's emissions have plateaued with no significant change in its energy consumption footprint.a
In 2025, Alstom reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, Alstom reported 48,674,709 metric tons of CO₂ equivalent (tCO₂e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain.a
The 2025 disclosure of Alstom includes a breakdown across 11 of the 15 Scope 3 categories defined by the GHG Protocol, up from 7 in 2024, reflecting improved emissions accounting practices and greater transparency across the company's value chaina
In 2025, Alstom reported total Scope 3 emissions of 48,674,709 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 14.49% of these emissions originated from upstream activities such as purchased goods and capital goods, while 85.51% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2020, Alstom's Scope 3 emissions have increased by 94.27%, reflecting a rising long-term trend in Scope 3 emissions over time.ac
Compared to the previous year (2024), Alstom's Scope 3 emissions remained relatively stable, indicating that Alstom's emissions have plateaued with no significant change in its value chain footprint.a
In 2025, Alstom reported emissions for 11 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This reflects a high level of granularity and transparency in the company's emissions reporting.
In 2025, the largest contributors to Alstom's Scope 3 emissions were:a
In 2025, Alstom reported Scope 1 greenhouse gas (GHG) emissions of 87,038 tCO₂e and total revenues of USD 20,012 millions. This translates into an emissions intensity of 4.35 tCO₂e per millions USD.a
In 2025, Alstom reported a Scope 1 emissions intensity of 4.35 tCO₂e per millions USD. Compared to the peer group median of 13.31, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, Alstom ranked 6 out of 24 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
Alstom is therefore positioned in the mid-range of its industry, neither a clear leader nor a laggard in carbon efficiency.a
In 2025, Alstom reported a total carbon footprint of 48,895,050 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 8.57% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.a
The largest contributor to Alstom's total carbon footprint was Scope 3 emissions, accounting for 99.55% of the company's total carbon footprint, followed by Scope 2 emissions at 0.27%.a