In 2025, Siemens AG 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).
Siemens AG has also provided a category-level breakdown for 12 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 | 288,300a | 347,000b | 387,000b | |
Total Scope 2 | ||||
Market-Based | 70,700a | 94,000b | 163,000b | |
Location-Based | 633,000a | N/A | 624,000c | |
Total Scope 3 | 159,144,000a | 416,871,000b | 488,863,000b | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 3.1137a | 4.0914b | 4.8929b |
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In 2025, the total operational greenhouse gas (GHG) emissions of Siemens AG amounted to 921,300 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 Siemens AG increased by 108.91%, suggesting that the company faced challenges in reducing its emissions from its core operations.ab
In 2025, the total Scope 1 emissions of Siemens AG were 288,300 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, Siemens AG's Scope 1 emissions have decreased by 48.97%, reflecting a declining long-term trend in Scope 1 emissions over time.ad
Compared to the previous year (2024), Siemens AG's Scope 1 emissions decreased by 16.92%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.ab
In 2025, Siemens AG reported Scope 2 greenhouse gas (GHG) emissions of 70,700 tCO₂e using the market-based method and 633,000 tCO₂e using the location-based method.a
Since 2019, Siemens AG's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have decreased by 19.05%, reflecting a declining long-term trend in Scope 2 emissions over time.ad
In 2025, Siemens AG reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, Siemens AG reported 159,144,000 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 Siemens AG includes a breakdown across 12 of the 15 Scope 3 categories defined by the GHG Protocol, up from 9 in 2024, reflecting improved emissions accounting practices and greater transparency across the company's value chaina
In 2025, Siemens AG reported total Scope 3 emissions of 159,144,000 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 7.21% of these emissions originated from upstream activities such as purchased goods and capital goods, while 92.79% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, Siemens AG's Scope 3 emissions have decreased by 11.2%, reflecting a declining long-term trend in Scope 3 emissions over time.a
Compared to the previous year (2024), Siemens AG's Scope 3 emissions decreased by 61.82%, highlighting the company's efforts to lower indirect emissions from its value chain.ab
In 2025, Siemens AG reported emissions for 12 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 Siemens AG's Scope 3 emissions were:a
In 2025, Siemens AG reported Scope 1 greenhouse gas (GHG) emissions of 288,300 tCO₂e and total revenues of USD 92,591 millions. This translates into an emissions intensity of 3.11 tCO₂e per millions USD.a
In 2025, Siemens AG reported a Scope 1 emissions intensity of 3.11 tCO₂e per millions USD. Compared to the peer group median of 5.24, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, Siemens AG ranked 4 out of 24 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places Siemens AG among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, Siemens AG reported a total carbon footprint of 160,065,300 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 61.64% decrease compared to 2024, indicating progress in reducing its overall greenhouse gas output.ab
The largest contributor to Siemens AG's total carbon footprint was Scope 3 emissions, accounting for 99.42% of the company's total carbon footprint, followed by Scope 2 emissions at 0.4%.a