In 2025, Diploma 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).
Diploma has also provided a category-level breakdown for 4 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 | 3,732a | 3,875a | 3,471b | |
Total Scope 2 | ||||
Market-Based | 1,043a | 3,807a | 5,653b | |
Location-Based | 5,213a | 5,739a | 5,191b | |
Total Scope 3 | 269,863a | 244,134a | 152,111a | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 1.8206a | 2.1237a | 2.3694b |
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In 2025, the total operational greenhouse gas (GHG) emissions of Diploma amounted to 8,945 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 Diploma decreased by 6.96%, 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 Diploma were 3,732 metric tons of CO₂ equivalent (tCO₂e).a
Since 2020, Diploma's Scope 1 emissions have increased by 382.79%, reflecting a rising long-term trend in Scope 1 emissions over time.ac
Compared to the previous year (2024), Diploma's Scope 1 emissions decreased by 3.69%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.a
In 2025, Diploma reported Scope 2 greenhouse gas (GHG) emissions of 1,043 tCO₂e using the market-based method and 5,213 tCO₂e using the location-based method.a
Since 2020, Diploma's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have increased by 46.51%, reflecting a rising long-term trend in Scope 2 emissions over time.ac
Compared to the previous year (2024), Diploma's Scope 2 emissions (Location-Based) have remained relatively stable, indicating that Diploma's emissions have plateaued with no significant change in its energy consumption footprint.a
In 2025, Diploma reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, Diploma reported 269,863 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 Diploma includes a breakdown across 4 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2024, demonstrating consistent Scope 3 emissions reporting coverage year over year.a
In 2025, Diploma reported total Scope 3 emissions of 269,863 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 100% of these emissions originated from upstream activities such as purchased goods and capital goods, while 0% came from downstream activities like product use, distribution, and end-of-life treatment.a
Compared to the previous year (2024), Diploma's Scope 3 emissions increased by 10.54%, suggesting that the company faced challenges in reducing emissions across its value chain.a
In 2025, Diploma reported emissions for 4 out of the 15 Scope 3 categories defined by the GHG Protocol.a
The limited disclosure restricts visibility into specific emission sources across the company's value chain.
In 2025, the largest contributors to Diploma's Scope 3 emissions were:a
In 2025, Diploma reported Scope 1 greenhouse gas (GHG) emissions of 3,732 tCO₂e and total revenues of USD 2,050 millions. This translates into an emissions intensity of 1.82 tCO₂e per millions USD.a
In 2025, Diploma reported a Scope 1 emissions intensity of 1.82 tCO₂e per millions USD. Compared to the peer group median of 6.48, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, Diploma 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 Diploma among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, Diploma reported a total carbon footprint of 278,808 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 9.88% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.a
The largest contributor to Diploma's total carbon footprint was Scope 3 emissions, accounting for 96.79% of the company's total carbon footprint, followed by Scope 2 emissions at 1.87%.a