Microsoft

Microsoft, a US-based computer and related services company, reported total emissions of approximately 21.12 billion kg CO2e in 2025. This included about 170.89 million kg CO2e from Scope 1 emissions, approximately 2.71 billion kg CO2e from Scope 2 market-based emissions, and around 18.24 billion kg CO2e from Scope 3 emissions.

In 2024, the company's total emissions were approximately 16.69 billion kg CO2e, comprising around 143.51 million kg CO2e from Scope 1, approximately 259.09 million kg CO2e from Scope 2 market-based emissions, and about 16.29 billion kg CO2e from Scope 3 emissions. For 2023, total emissions were around 17.66 billion kg CO2e, with approximately 144.96 million kg CO2e from Scope 1, about 393.13 million kg CO2e from Scope 2 market-based emissions, and roughly 17.12 billion kg CO2e from Scope 3 emissions.

Microsoft has committed to ambitious climate targets. The company aims to be carbon negative by 2030 and to remove all historical carbon emissions, both direct and from electricity consumption, by 2050. They intend to reduce Scope 1 and 2 emissions to near zero by the middle of this decade, partly by achieving 100% renewable energy by 2025. Furthermore, Microsoft targets reducing Scope 3 emissions by over 50% from a 2020 baseline by 2030. In 2019, the Science Based Targets initiative (SBTi) certified Microsoft's target to reduce Scope 3 GHG emissions intensity per unit of revenue by 30% by 2030 from a 2017 base year, while also aiming to avoid growth in absolute Scope 3 emissions. Microsoft is also a signatory to The Climate Pledge, having signed in December 2020.