Microsoft says its carbon emissions increase 25% in 2025, citing higher activity tied to a boom in artificial intelligence data centers. The company is among technology firms that are reporting setbacks or slower progress toward reducing emissions while continuing major investments in AI infrastructure. Microsoft previously made a climate commitment to remove more greenhouse gas from the atmosphere than it emits by 2030. The latest disclosure indicates that, during the reported period, its emissions rise faster than planned, according to the two accounts provided. Together, the reports describe the same core development: Microsoft’s 2025 emissions climb by a quarter year-over-year, and this happens as the company expands data center capacity to support AI workloads. The sources do not describe specific causes beyond the broader increase in data center demand, nor do they provide detailed breakdowns of emission sources in the excerpts supplied. The reporting frames the update as another example of the tension between decarbonization targets and the energy and infrastructure demands of rapid AI growth.