{"data":[{"facilityId":"epoch-microsoft-fairwater-wisconsin","slug":"microsoft-fairwater-wisconsin-mount-pleasant-wi","name":"Microsoft Fairwater Wisconsin","state":"WI","county":"Racine County","orgIds":["microsoft","openai","we-energies"],"iso":"MISO","utilities":["we-energies"],"id":"epoch-microsoft-fairwater-wisconsin:size.buildings_operational:epoch-ai-data-centers:2026-04-16","date":"2026-04-16","kind":"value","field":"size.buildings_operational","before":0,"after":1,"sourceId":"epoch-ai-data-centers","evidenceLevel":"estimated","text":"Buildings operational: 0 → 1","url":"https://datacenters.prithvidixit.com/facilities/microsoft-fairwater-wisconsin-mount-pleasant-wi","source":{"id":"epoch-ai-data-centers","title":"AI data centers (Frontier Data Centers Hub)","publisher":"Epoch AI","url":"https://epoch.ai/data/ai-data-centers","license":"CC BY 4.0","retrievedAt":"2026-10-12"}},{"facilityId":"epoch-microsoft-fairwater-wisconsin","slug":"microsoft-fairwater-wisconsin-mount-pleasant-wi","name":"Microsoft Fairwater Wisconsin","state":"WI","county":"Racine County","orgIds":["microsoft","openai","we-energies"],"iso":"MISO","utilities":["we-energies"],"id":"epoch-microsoft-fairwater-wisconsin:status:epoch-ai-data-centers:2026-04-16","date":"2026-04-16","kind":"value","field":"status","before":"under_construction","after":"expanding","sourceId":"epoch-ai-data-centers","evidenceLevel":"estimated","text":"Status: Under construction → Operating + expanding","url":"https://datacenters.prithvidixit.com/facilities/microsoft-fairwater-wisconsin-mount-pleasant-wi","source":{"id":"epoch-ai-data-centers","title":"AI data centers (Frontier Data Centers Hub)","publisher":"Epoch AI","url":"https://epoch.ai/data/ai-data-centers","license":"CC BY 4.0","retrievedAt":"2026-10-12"}},{"facilityId":"epoch-microsoft-fairwater-wisconsin","slug":"microsoft-fairwater-wisconsin-mount-pleasant-wi","name":"Microsoft Fairwater Wisconsin","state":"WI","county":"Racine County","orgIds":["microsoft","openai","we-energies"],"iso":"MISO","utilities":["we-energies"],"id":"epoch-microsoft-fairwater-wisconsin:phase_operational:2026-04-16:epoch-ai-data-centers","date":"2026-04-16","kind":"milestone","milestone":"phase_operational","description":"Building 1 is operational. [X post](https://x.com/satyanadella/status/2044767391293509761?s=61) from Microsoft saying this date for Fairwater becoming operational.","sourceId":"epoch-ai-data-centers","evidenceLevel":"estimated","text":"New capacity online: Building 1 is operational. X post from Microsoft saying this date for Fairwater becoming operational.","url":"https://datacenters.prithvidixit.com/facilities/microsoft-fairwater-wisconsin-mount-pleasant-wi","source":{"id":"epoch-ai-data-centers","title":"AI data centers (Frontier Data Centers Hub)","publisher":"Epoch AI","url":"https://epoch.ai/data/ai-data-centers","license":"CC BY 4.0","retrievedAt":"2026-10-12"}},{"facilityId":"epoch-openai-stargate-wisconsin","slug":"openai-stargate-wisconsin-ozaukee-county-wi","name":"OpenAI Stargate Wisconsin","state":"WI","county":"Ozaukee County","orgIds":["oracle","openai","we-energies","vantage","wec-energy-group"],"iso":"MISO","utilities":["we-energies"],"id":"epoch-openai-stargate-wisconsin:construction_start:2026-01-02:epoch-ai-data-centers","date":"2026-01-02","kind":"milestone","milestone":"construction_start","description":"Ground broken for the facility, land clearing begins for all buildings","sourceId":"epoch-ai-data-centers","evidenceLevel":"estimated","text":"Construction started: Ground broken for the facility, land clearing begins for all buildings","url":"https://datacenters.prithvidixit.com/facilities/openai-stargate-wisconsin-ozaukee-county-wi","source":{"id":"epoch-ai-data-centers","title":"AI data centers (Frontier Data Centers Hub)","publisher":"Epoch AI","url":"https://epoch.ai/data/ai-data-centers","license":"CC BY 4.0","retrievedAt":"2026-10-12"}}],"meta":{"total":4,"limit":100,"offset":0,"dataAsOf":"2026-10-12"},"attribution":{"license":"Open Database License (ODbL) 1.0 for the compiled database; individual sources keep their own terms (see sources[].license).","credit":["© OpenStreetMap contributors (ODbL 1.0) — https://www.openstreetmap.org/copyright","Epoch AI, 'AI data centers'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/data/ai-data-centers' (CC BY 4.0)","Datacenter Source — https://datacenters.prithvidixit.com"],"terms":"/api#license","note":"Every figure links to its source. MW totals are floors (most facilities don't disclose power). Evidence levels: confirmed / announced / estimated — see /sources#evidence-levels."}}