Stargate Lighthouse (Vantage Port Washington)
Under constructionWisconsin · Ozaukee · last verified Sep 17, 2026
- Developer
- Vantage Data Centers
- Tenant
- Oracle / OpenAI
- Location
- Port Washington, Ozaukee, Wisconsin
- Announced capacity
- 1 GW
- Capacity confidence
- Reported, partly confirmed
- Phase one
- —
- Site
- 672 acres
- Utility
- We Energies (MISO)
- Power source
- grid, matched with new solar, wind and battery storage
- Reported investment
- $15B
- Announced
- Aug 19, 2025
- Target online
- Completion 2028
Notes
Merged record. Port Washington council approved the Vantage development agreement 2025-08-19; OpenAI/Oracle named it a Stargate site 2025-10-22; Vantage says 'close to a gigawatt' across four buildings while We Energies filings show a 1.3 GW first-phase interconnection and a 3.5 GW long-range plan; 672 acres is first phase of a 1,900-acre property; groundbreaking Dec 18, 2025.
Location
Approximate coordinates: 43.3900, -87.8800 · open in OpenStreetMap
Sources
- Dec 19, 2025 $15B Stargate data center breaks ground in Wisconsin · Construction Dive
- Oct 22, 2025 OpenAI, Oracle and Vantage Data Centers Announce Stargate Data Center Site in Wisconsin · Vantage Data Centers
- Aug 20, 2025 Port Washington approves $8 billion Vantage Data Centers project · BizTimes Milwaukee
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