Oracle · Port Washington, Wisconsin

OpenAI Stargate Wisconsin

1.3GW projected

The power of 1.1 million US homes, once built.

Under construction. Projected to draw 1.3 GW by Dec 2028.

Users: OpenAI
Project: Stargate

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This site on the globe

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Every site on the globe

<iframe src="https://jesseahawkins.com/buildout/embed/" title="The AI buildout: the world's largest AI data centers on a globe" width="100%" height="600" style="border:0;max-width:100%" loading="lazy"></iframe>

Each frame credits Epoch AI and links back to its page. Preview it.

Cite

This page

Jesse Hawkins, “OpenAI Stargate Wisconsin · The AI buildout”, jesseahawkins.com, data retrieved 22 Oct 2026. https://jesseahawkins.com/buildout/openai-stargate-wisconsin/. Data: Epoch AI, “AI data centers”, CC BY 4.0.

BibTeX

@misc{hawkins2026buildoutopenaistargatewisconsin,
  author = {Hawkins, Jesse},
  title = {{OpenAI Stargate Wisconsin · The AI buildout}},
  year = {2026},
  howpublished = {\url{https://jesseahawkins.com/buildout/openai-stargate-wisconsin/}},
  note = {Data: Epoch AI, ``AI data centers'', CC BY 4.0, retrieved 2026-10-22}
}

The data · Epoch AI

Epoch AI, 'AI data centers'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/data/ai-data-centers' [online resource]. CC BY 4.0.

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Power over time

facility power · 4 milestones

Every milestone

2 Jan 2026 — Ground broken for the facility, land clearing begins for all buildings
14 Feb 2026 — Land clearing continues, foundation construction clearly begins for eastern and northern buildings (Building 1-2)
24 Jul 2026 — Construction continues, Buildings 1 and 2 appear roughly halfway roofed, and building 3 foundation is halfway done.
31 Dec 2028 · projected 1.3 GW Building 4 and supporting facilities/buildings operational, whole facility now operational. Based on the environmental analysis (page 6) filed for the site.

Every step Epoch planned here on 2 Sep 2026 is still on plan. Planned against reached

Gas made 37% of the power on this site's grid

net generation by fuel · Oct 2025 to Sep 2026

Midcontinent Independent Transmission System Operator, Inc. MISO · balancing authority

Gas 37%
Coal 26%
Nuclear 14%
Wind 15%
Solar 6%
Hydro 1%
Other 1%

The grid of the utilities that serve Ozaukee County, WI. Each grid is a balancing authority. Generation only; imports are excluded. Every grid behind an AI site.

No new plant is planned in Ozaukee County

power plants in Ozaukee County · EIA-860M, September 2026

In service in Ozaukee County today: 1.2 GW. Since January 2023: 8 MW added, 0 MW retired. A plant in the same county does not mean it feeds the site. Power plants near every AI site.

Sources

selected by Epoch AI

Data: Epoch AI, “AI data centers”, CC BY 4.0, retrieved 22 Oct 2026. Facility power adds cooling and other overhead to the IT power the servers draw. Placed at the centre of Port Washington. Grid: U.S. Energy Information Administration, Hourly Electric Grid Monitor (Form EIA-930), public domain, retrieved 16 Oct 2026; utilities by county from Form EIA-861 and the U.S. Census Bureau Geocoder, public domain. Power plants: U.S. Energy Information Administration, Form EIA-860M, public domain, inventory as of September 2026. All sources.