Microsoft Fairwater
Mount Pleasant, Wisconsin, US · operating · operated for Microsoft
Microsoft's AI campus on the former Foxconn site in Mount Pleasant — three buildings and 1.2 million square feet on 315 acres, running Nvidia GB200 racks on closed-loop liquid cooling. Microsoft links it to a sister Fairwater site in Atlanta over a dedicated AI WAN.
Compute Atlas, the sister dataset on supercomputer and AI-cluster supply chains, has the component-by-component record for this campus: Microsoft Fairwater, Wisconsin (system).
What's documented
- 315 acres, three buildings, 1.2 million square feet under roof; construction used 46.6 miles of foundation piles, 26.5 million pounds of structural steel, 120 miles of medium-voltage underground cable and 72.6 miles of mechanical piping. [source]
- Runs Nvidia GB200 servers at 72 Blackwell GPUs per rack; closed-loop liquid cooling with essentially zero water use after the initial fill, backed by what Microsoft calls the second-largest water-cooled chiller plant in the world with 172 twenty-foot fans. [source]
- Announced May 2024; first facility declared fully operational June 23, 2026, built by nearly 10,000 construction workers over two years; a second facility of roughly $4 billion targets 2028. [source]
- Linked to Microsoft's Atlanta Fairwater site (~700 miles away) as an 'AI superfactory' over a dedicated AI WAN Microsoft describes as 120,000 miles of dedicated fiber. [source]
Suppliers reported inside
Placements come from the cited reporting, not operator disclosures, unless a source says otherwise.
The generic bill of materials
Whatever the vendor list, a facility like this contains the same part categories:rack-scale systems, direct-to-chip cold plates, coolant distribution units, large power transformers (345–765 kV) & substations, UPS (static, modular, rotary/DRUPS) & UPS power semis, backup generation: gensets, fuel systems, HVO, chillers & compressors — the full set is in the scales matrix.