Microsoft data center expansion drives 25% emissions rise despite renewable energy matching

Microsoft reported a 25% increase in greenhouse gas emissions driven by data center construction, even as the company matched its entire electricity consumption with renewable energy last year. The latest sustainability report shows emissions rose from 13 million tons of CO2 equivalent in 2020 to an estimated 20 million tons by 2025, with Scope 3 emissions remaining the largest portion of the carbon footprint. The company aims to be carbon negative by 2030 but faces a growing challenge as AI infrastructure drives up energy, water, and material demand. On the positive side, Microsoft improved water usage effectiveness by 25% since 2022 and replenished more water than it withdrew for the first time. Its Circular Centers reused 92% of decommissioned servers and components. The company is also experimenting with lower carbon concrete and wood based facilities that could cut construction emissions by 65%. The report underscores the tension between scaling AI infrastructure and meeting climate goals, a dynamic that will shape carbon markets and corporate sustainability strategies in the coming years.