Malachi.Energy

Stargate Lighthouse

Under Construction

Vantage / Oracle / OpenAI · Port Washington, WI

Maintained and reviewed by Malachi Rein, LEED AP BD+CDataset version

Summary

Stargate Lighthouse by Vantage / Oracle / OpenAI in Port Washington, WI is planned at 1.0 GW and about $15 billion, and is under construction, with a 2028 target as of September 2026. It ranks 36th of 54 tracked US mega projects by planned capacity, 0.9% of the 109.2 GW national total. The capacity figure is developer disclosed; the investment figure is third-party analyst estimate. Confidence is medium: one figure is reported, estimated, or scoped differently than the campus. Malachi.Energy tracks 3 mega projects in Wisconsin in total.

Key figures

Planned capacity

1.0 GW

Developer disclosed

Announced investment

$15 billion

Third-party analyst estimate

Status

Under construction

As of September 2026

Target year

2028

First load or full build per source

Where the figures come from

Capacity basis
Developer disclosed
Investment basis
Third-party analyst estimate
Confidence
Medium: one figure is reported, estimated, or scoped differently than the campus.
Counted in headline totals
Yes. The investment figure is not developer-stated campus cost, so it is listed as announced rather than comparable spend.
Primary source
Epoch AI, April 2026
Last verified
, dataset version 2026-09-14. Re-checked at every data refresh.

Basis and confidence definitions are in the directory methodology.

What is known

Stargate site in Wisconsin operated by Vantage for Oracle and OpenAI, scalable to 3.5 GW in later phases.

Location

Site
Port Washington, WI
Coordinates
43.39, -87.87
State directory
Data centers in Wisconsin (12 verified facilities)

Other tracked projects in Wisconsin

Cite this record

Rein, Malachi (2026). Stargate Lighthouse (Port Washington, WI). In US Data Center Directory, dataset version 2026-09-14. Malachi.Energy. https://malachi.energy/data-centers/projects/stargate-port-washington

@misc{malachienergy_stargate_port_washington_2026,
  author = {Rein, Malachi},
  title = {Stargate Lighthouse (Port Washington, WI)},
  howpublished = {US Data Center Directory, Malachi.Energy},
  year = {2026},
  note = {Dataset version 2026-09-14. Capacity basis: Developer disclosed. Investment basis: Third-party analyst estimate.},
  url = {https://malachi.energy/data-centers/projects/stargate-port-washington}
}

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Figures are planned capacity and announced investment from public filings and reporting, not delivered power or audited spend. Capacity basis: developer disclosed. Investment basis: third-party analyst estimate. Dataset version . Maintained by Malachi Rein for Malachi.Energy.