In 2025, Mersen 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).
Mersen 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 | 58,206a | 75,912a | 85,161b | |
Total Scope 2 | ||||
Market-Based | 13,274a | 19,301a | 23,375b | |
Location-Based | 73,818a | 129,619a | 142,305b | |
Total Scope 3 | 3,801,649a | 3,932,082a | 348,428b | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 41.7306a | 58.6597a | 63.5412b |
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In 2025, the total operational greenhouse gas (GHG) emissions of Mersen amounted to 132,024 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 Mersen decreased by 35.76%, showing that the company has made progress in taking action to reduce the climate impact of its operations.a
In 2025, the total Scope 1 emissions of Mersen were 58,206 metric tons of CO₂ equivalent (tCO₂e).a
Since 2022, Mersen's Scope 1 emissions have decreased by 33.34%, reflecting a declining long-term trend in Scope 1 emissions over time.a
Compared to the previous year (2024), Mersen's Scope 1 emissions decreased by 23.32%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.a
In 2025, Mersen reported Scope 2 greenhouse gas (GHG) emissions of 13,274 tCO₂e using the market-based method and 73,818 tCO₂e using the location-based method.a
Since 2022, Mersen's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have decreased by 48.52%, reflecting a declining long-term trend in Scope 2 emissions over time.a
Compared to the previous year (2024), Mersen's Scope 2 emissions (Location-Based) fell by 43.05% in 2025, showing that the company has made progress in taking action to reduce the climate impact of its energy consumption.a
In 2025, Mersen reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, Mersen reported 3,801,649 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 Mersen includes a breakdown across 12 of the 15 Scope 3 categories defined by the GHG Protocol, up from 10 in 2024, reflecting improved emissions accounting practices and greater transparency across the company's value chaina
In 2025, Mersen reported total Scope 3 emissions of 3,801,649 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 4.9% of these emissions originated from upstream activities such as purchased goods and capital goods, while 95.1% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2022, Mersen's Scope 3 emissions have increased by 1,044.24%, reflecting a rising long-term trend in Scope 3 emissions over time.a
Compared to the previous year (2024), Mersen's Scope 3 emissions remained relatively stable, indicating that Mersen's emissions have plateaued with no significant change in its value chain footprint.a
In 2025, Mersen 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 Mersen's Scope 3 emissions were:a
In 2025, Mersen reported Scope 1 greenhouse gas (GHG) emissions of 58,206 tCO₂e and total revenues of USD 1,395 millions. This translates into an emissions intensity of 41.73 tCO₂e per millions USD.a
In 2025, Mersen reported a Scope 1 emissions intensity of 41.73 tCO₂e per millions USD. Compared to the peer group median of 3.66, this places the company above its industry benchmark, indicating it is less carbon-efficient than most competitors.a
In 2025, Mersen ranked 25 out of 25 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places Mersen among the least efficient performers, with one of the highest emissions intensities in its sector.a
In 2025, Mersen reported a total carbon footprint of 3,933,673 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 4.93% decrease compared to 2024, indicating progress in reducing its overall greenhouse gas output.a
The largest contributor to Mersen's total carbon footprint was Scope 3 emissions, accounting for 96.64% of the company's total carbon footprint, followed by Scope 2 emissions at 1.88%.a