Microsoft emissions rise 25% in 2025 as AI data centers boost fossil fuel use, experts warn of bigger surges ahead

Microsoft's total emissions jumped 25% in 2025, driven by AI data center growth and a pause on using some renewable energy certificates, according to its latest sustainability report. The company still aims to be carbon negative by 2030, but outside analysts say emissions will surge further because Microsoft has not disclosed three planned gas power plant projects totaling 4.75 gigawatts. Those projects alone could emit over 15 million metric tons of CO2 per year, according to a Stand.earth analysis. The report's omission of these upcoming gas plants has drawn criticism from campaigners who say Microsoft is downplaying its future footprint. The tension highlights a broader conflict: tech giants are scaling AI infrastructure quickly, often relying on fossil fuels when renewable energy and grid capacity fall short. For anyone tracking corporate climate pledges versus real-world emissions, this story shows how hard it is to square rapid growth with decarbonization targets.