Microsoft’s emissions rose 25% last year. Experts say they’ll surge even more dramatically in the years ahead

Microsoft’s total emissions increased 25% in 2025, according to its latest sustainability report, adding to the trend of tech companies polluting more heavily as they ramp up AI data centers. And the company’s emissions are set to keep surging, outside analysts say, as it relies on fossil fuels to power that infrastructure. The increase last year was “driven primarily,” Microsoft says, by both its growth of AI data centers and its decision to pause its use of certain renewable energy…