Microsoft’s carbon emissions went up 25 percent last year

Microsoft's carbon emissions rose 25% in 2025, totaling 34 million metric tons, due to datacenter expansion and a change in renewable energy purchasing. This setback may hinder the company's goal of being carbon negative by 2030. The report highlights the challenges Microsoft faces in meeting its climate targets. Engineers should be aware of the company's sustainability efforts and potential changes to datacenter infrastructure. Microsoft's report emphasizes the need for interventions to reduce emissions.