Microsoft Fairwater
Microsoft's 'most powerful AI datacenter' — and a template it is replicating.
You're looking at a data-center record: a real facility — who runs it, what hardware fills it, and where its power comes from.
Fairwater in Mount Pleasant, Wisconsin (on the site once planned for Foxconn's LCD plant) opened in 2025 as what Microsoft called the world's most powerful AI datacenter: hundreds of thousands of GB200-class GPUs on a flat NVLink/InfiniBand fabric, closed-loop liquid cooling with minimal water draw, and a second Fairwater announced for Atlanta with the sites linked by an AI WAN into one distributed supercomputer. Total Wisconsin commitment: $7B+.
Specifications & key facts
Each figure is labeled by basis: vendor spec, vendor claim, reported, estimate, or official. "Not publicly disclosed" means exactly that — we never invent values.
Overview
Scale
Cooling
How this connects to the rest of the stack
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Interconnect & networking
Cooling
Hardware deployed
Operated by
Sources
Microsoft Fairwater announcement ↗
Record reviewed as of 2026-01-15 — see Methodology.