Microsoft CEO says new AI data centers use as little water annually as a restaurant — closed-loop cooling system aims to slash consumption from millions of gallons as AI infrastructure faces mounting environmental scrutiny

Microsoft CEO Satya Nadella announced at Microsoft Build 2026 that the company's new AI data centers consume as little water annually as a single restaurant, thanks to a closed-loop cooling system. This move is part of Microsoft's "Community-First AI Infrastructure" strategy to address concerns about data center environmental impact. The new liquid-cooling architecture reduces water consumption significantly, with over 90% of cooling relying on a closed-loop system. While the system is currently implemented at the Fairwater AI data center in Wisconsin, it will become the standard for future AI-focused data centers as Microsoft aims to be water positive by 2030. This initiative comes amidst growing pressure on tech giants like Microsoft and Google to reduce the environmental footprint of their data centers.