In 2024, Iron Mountain 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).
Iron Mountain has also provided a category-level breakdown for 9 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2024 | 2023 | 2022 | 2021-2019 |
|---|---|---|---|---|
Total Scope 1 | 115,728a | 113,532a | 136,006a | |
Total Scope 2 | ||||
Market-Based | 51,927a | 65,302a | 63,308a | |
Location-Based | 234,238a | 210,216a | 209,112a | |
Total Scope 3 | 913,160a | 818,486b | 675,484a | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 18.8178a | 20.7164a | 26.6492a |
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In 2024, the total operational greenhouse gas (GHG) emissions of Iron Mountain amounted to 349,966 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 2023, the total operational greenhouse gas (GHG) emissions of Iron Mountain increased by 8.1%, suggesting that the company faced challenges in reducing its emissions from its core operations.a
In 2024, the total Scope 1 emissions of Iron Mountain were 115,728 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, Iron Mountain's Scope 1 emissions have decreased by 19.16%, reflecting a declining long-term trend in Scope 1 emissions over time.ac
Compared to the previous year (2023), Iron Mountain's Scope 1 emissions increased by 1.93%, suggesting that the company faced challenges in reducing emissions from its directly owned or controlled operations.a
In 2024, Iron Mountain reported Scope 2 greenhouse gas (GHG) emissions of 51,927 tCO₂e using the market-based method and 234,238 tCO₂e using the location-based method.a
Since 2019, Iron Mountain's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have decreased by 36.72%, reflecting a declining long-term trend in Scope 2 emissions over time.ac
Compared to the previous year (2023), Iron Mountain's Scope 2 emissions (Location-Based) rose by 11.43% in 2024, suggesting that the company faced challenges in reducing emissions from purchased electricity and energya
In 2024, Iron Mountain reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2024, Iron Mountain reported 913,160 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 2024 disclosure of Iron Mountain includes a breakdown across 6 of the 15 Scope 3 categories defined by the GHG Protocol, down from 9 in 2023, indicating a decline in reporting granularity and reduced insight into the company's full value chain emissions.a
In 2024, Iron Mountain reported total Scope 3 emissions of 913,160 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
Since 2019, Iron Mountain's Scope 3 emissions have increased by 2,260.26%, reflecting a rising long-term trend in Scope 3 emissions over time.ac
Compared to the previous year (2023), Iron Mountain's Scope 3 emissions increased by 11.57%, suggesting that the company faced challenges in reducing emissions across its value chain.ab
In 2024, Iron Mountain reported emissions for 6 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This partial disclosure allows for some insight into the company's indirect impacts.
In 2024, the largest contributors to Iron Mountain's Scope 3 emissions were:a
In 2024, Iron Mountain reported Scope 1 greenhouse gas (GHG) emissions of 115,728 tCO₂e and total revenues of USD 6,150 millions. This translates into an emissions intensity of 18.82 tCO₂e per millions USD.a
In 2024, Iron Mountain reported a Scope 1 emissions intensity of 18.82 tCO₂e per millions USD. Compared to the peer group median of 3.88, this places the company above its industry benchmark, indicating it is less carbon-efficient than most competitors.a
In 2024, Iron Mountain ranked 19 out of 23 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places Iron Mountain among the least efficient performers, with one of the highest emissions intensities in its sector.a
In 2024, Iron Mountain reported a total carbon footprint of 1,263,126 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 10.58% increase compared to 2023, suggesting a rise in emissions across its operations or value chain.ab
The largest contributor to Iron Mountain's total carbon footprint was Scope 3 emissions, accounting for 72.29% of the company's total carbon footprint, followed by Scope 2 emissions at 18.54%.a