Iron Mountain

Iron Mountain, a US-headquartered company in the Data Processing, Hosting, and Related Services industry, reported total carbon emissions of approximately 1.19 billion kg CO2e in 2025. This includes Scope 1 emissions of around 120.87 million kg CO2e, market-based Scope 2 emissions of about 3.53 million kg CO2e, and Scope 3 emissions totalling approximately 1.02 billion kg CO2e. In 2024, their total emissions were about 1.08 billion kg CO2e, with Scope 1 at approximately 115.73 million kg CO2e, market-based Scope 2 at about 3.64 million kg CO2e, and Scope 3 at around 913.16 million kg CO2e. For 2023, Iron Mountain's total emissions were approximately 992.17 million kg CO2e, comprising around 113.53 million kg CO2e from Scope 1, about 2.72 million kg CO2e from market-based Scope 2, and approximately 813.34 million kg CO2e from Scope 3.

Iron Mountain has set ambitious climate commitments, validated by the Science Based Targets initiative (SBTi). The company commits to reaching net-zero greenhouse gas emissions across its value chain by 2040. Their near-term SBTi targets include reducing absolute Scope 1 and 2 GHG emissions by 54.6% by 2033 from a 2022 base year. They also aim for 84.2% of their suppliers (by emissions covering purchased goods and services, capital goods, business travel, and upstream transportation and distribution) to have science-based targets by 2028. For long-term goals, Iron Mountain commits to reducing absolute Scope 1 and 2 GHG emissions by 90% by 2040 from a 2022 base year, and absolute Scope 3 GHG emissions by 90% within the same timeframe. Earlier, Iron Mountain also committed to an SBTi target to reduce absolute Scope 1, 2, and 3 GHG emissions by 20% by 2025 from a 2016 base-year. They also set a target to achieve a 25% reduction of GHG emissions from Scope 1 and 2 energy sources by 2025 from a 2019 baseline.

Notably, Iron Mountain achieved a significant reduction in emissions early, reaching a 52% reduction in absolute emissions from their 2016 baseline by 2019, and a 62% reduction by 2020. More recently, the company reported reducing Scope 1 and 2 greenhouse gas emissions by 10% from 2022 to 2023 and by 16% from 2022 to 2024. Iron Mountain is also a signatory to The Climate Pledge, committing to net-zero emissions by 2040. They are committed to covering 100% of their global electricity consumption with clean energy by 2040.