04BBuildout · frontier site· cluster ledger reviewed 2026-10-14
Fairwater Wisconsin AI datacenter
Microsoft · Mount Pleasant, Wisconsin. The ledger records it as operating, with 369 MW energized of 2.3 GW planned. Every figure below traces to a dated public source.
Ledger figures
- Operator
- Microsoft
- Location
- Mount Pleasant, Wisconsin
- Status
- Operating
- Current power
- 369 MWest — estimated / secondary-source figure
- Planned power
- 2.3 GWest — estimated / secondary-source figure
- Accelerators
- Designed to interconnect hundreds of thousands of NVIDIA GPUs (GB200 servers) in one cluster (~176K B200 live, tracker estimate)
- Announced
- 2025-09-18
- First power
- 2026-04
“World’s most powerful AI datacenter” claim; first facility complete Jun 2026, campus path to ~2 GW by 2028.
Power figures are IT load where trackers publish it and campus power where only the operator’s headline exists; each source below names its basis. A figure marked est rests on at least one source other than the operator’s own announcement.
Sources behind each figure
- Current power · est ≈369 MW IT live (tracker estimate) — Epoch AI data-center directory,
- Planned power · est ≈2.26 GW IT projected by Q2 2028 (tracker estimate) — Epoch AI data-center directory,
- Accelerators “Hundreds of thousands” of NVIDIA GPUs run as a single cluster of interconnected GB200 servers — Microsoft,
- Accelerators · est ≈176K NVIDIA B200 installed (tracker estimate) — Epoch AI data-center directory,
- Announced Fairwater Wisconsin unveiled Sep 2025 — Microsoft,
- First power Equipment online and startup in April 2026; construction complete and fully operational Jun 23, 2026 — Microsoft,
Background reading: Microsoft Fairwater on AI Wiki. AI Wiki is run by the same team as AI Compute Tracker.