Microsoft emissions surged 25% during data center boom
Microsoft's carbon emissions surged by 25% in 2025, reaching 20 million metric tons, primarily driven by the construction of new data centers for artificial intelligence. This increase poses a challenge to the company's prior pledge to be carbon negative by 2030. Microsoft is reassessing its sustainability strategies and carbon credit purchases in light of its rapid AI infrastructure expansion.
Microsoft Corp. reported a 25% increase in its carbon emissions in 2025, reaching 20 million metric tons, largely due to the rapid expansion of its AI data center infrastructure. This development presents a setback for the company's commitment made six years ago to become carbon negative by 2030.
Microsoft President Brad Smith and Chief Sustainability Officer Melanie Nakagawa acknowledged the tension between the demand for AI infrastructure and the slow scaling of sustainability solutions. The company's green ambitions have clashed with its commercial drive to dominate the AI sector, leading to a surge in power-hungry data center construction that strains electrical grids.
An example cited is Microsoft's June deal with Chevron Corp. to power a new data center complex in West Texas using electricity from a natural-gas-fired power plant. Concurrently, Microsoft has re-evaluated its carbon offsetting efforts, pausing certain carbon-banking deals and reconsidering a target to match hourly data center electricity use with renewables. The company attributes part of the emissions increase to a decision to halt the purchase of controversial carbon credits, stating a desire for more precise and adaptable sustainability strategies without lowering overall ambition.