Microsoft Fairwater Wisconsin
Microsoft Azure · Fairwater
- IT live
- 338 MW
- Remaining
- 112 MW
- $ / kW·mo
- $69
- White space
- 676k ft²
Inventory
75% occupiedPower
450 MWcampus
112 MW to commission · 338 MW in use
White space
900k ft²total
224k ft² free · 676k ft² occupied
84k m² · 21k m² free
Remaining power is campus IT not yet commissioned — captive capacity, not third-party colo.
Power
About 112 MW of the utility feed is cooling, conversion, and house load.
Power cost
$69/kW·mo
8.4¢ industrial · 9.4¢ after PUE 1.12
- Per MW·year
- $824k
- This site · 338 MW
- $279M/yr
- 140 kW rack
- $9,615/mo
2.6× the cheapest market (Iceland Landsvirkjun). Same IT load there is $172M/yr less.
Wisconsin industrial · utility tariff × PUE, not colo list price.
- Redundancy
- 2N
- Opened
- 2025
- Renewable match
- 100%
- Rack density
- 140 kW
- PUE
- 1.121.00 ideal · 1.60 typical
- Power source
- We Energies plus Microsoft PPAs. Designed for 100% carbon-free matching.
Cooling
Plant
Closed-loop liquid
Liquid
Deployed
Rack density
140 kW
H100-eq
446k
WUE
0.27 L/kWh
fleet avg · 2025 · 799k m³/yr at 338 MW
Operator fleet average applied to this hall — not a site meter. Microsoft FY2025 water intensity disclosure.
Second-largest water-cooled chiller plant on the planet. 172 twenty-foot fans on cooling fins. Closed loop charged once at construction — no evaporative losses. Over 90% of Microsoft DC capacity uses this system.
Network carriers
7On-net and metro carriers typically present at this location, including internet exchanges. Not a full circuit inventory.
Clouds
1Native regions and typical Direct Connect / ExpressRoute / Interconnect on-ramps at this campus. Availability varies by hall.
Location
Mount Pleasant, Wisconsin, United States
Mount Pleasant / Racine County, WI (MKE03)
42.731°, -87.866° · North America
Tenants / users
Microsoft, OpenAI
Notes
Introduced September 2025 as Microsoft's largest AI factory at the time.
Compiled from public filings, operator pages, and reporting. Not an official operator specification.