Vantage Port Washington (Lighthouse) Campus

Capacity: announced vs energized

Announced-to-energized gap: 0.90 GW. Every figure below is a single dated, sourced claim. Current best per series resolves by evidence tier, then date. See the methodology.

Promised online: 2028. 26 months away. Claimed by Vantage Data Centers (source).

Key facts

Reported facts

Structured facts sourced from citations already on this record. Each fact traces to a source in the References section below.

Partners

OpenAI, Oracle and Vantage Data Centers Stargate campus in Port Washington, Wisconsin

Campus size (company-claimed)

672 acres; four buildings, 902 MW critical IT, 2.5M sq ft; completion 2028.

Investment (company-claimed)

$15B+

Power (company-claimed)

We Energies; new solar, wind and battery capacity, 70% for the campus; dedicated rate structure.

Cooling and water (company-claimed)

Closed-loop liquid cooling; $175M+ for local water, sewer and power upgrades.

Jobs (company-claimed)

4,000+ construction jobs; 1,000+ long-term jobs

Site design (company-claimed)

500 of 672 acres developed; 2,000+ native trees; sound berm; LEED target.

Grid timing (reported, Oct 2026)

ATC transmission approval at the Wisconsin PSC may delay 2027 delivery to Oracle.

Point Beach nuclear (company-claimed, Oct 2026)

Oracle plans to take a share of Point Beach nuclear output; PSC approval pending.

On the data center map

Every tracked data center is on this map, centered on Vantage Port Washington (Lighthouse) Campus. Pan or zoom out to see how close rivals are building.

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The deal

offtaker

OpenAI · Stargate program

utility

We Energies (WEC Energy Group) · Dedicated large-customer electricity rate

financier

Cloverleaf Infrastructure · Co-party on PSC collateral tariff filing

developer

Vantage Data Centers · Underwriting 100% of power infrastructure

operator

Vantage Data Centers

offtaker

Oracle · Stargate program

Power

Power source

grid

Grid operator

MISO

Interconnection

Grid connected, in progress: Vantage is seeking a 1.3 GW connection from We Energies, with full build-out potentially requiring 3.5 GW. MISO moved the in-service date to 1 December 2027, and ATC was awarded the substations that serve the site.

Water

Closed-loop liquid cooling system that uses minimal water; Vantage committing a minimum of $175M to regional water/wastewater upgrades (new water tower, upgraded mains, sewer). Stated goal water-positive via restoration projects.

45 diesel emergency generators (Wisconsin DNR permit 25-MIN-094), grid interconnect, Permitted. Backup generation air permit issued 2026-06-12

New generation for Lighthouse campus, 2 GW other, Announced. Partners cite 'nearly two gigawatts of new energy to the grid,' allocated ~70% to campus / ~30% to Wisconsin consumers; described as zero-emission energy capacity. No generation technology confirmed.

The MISO grid demand right now: 66.8 GW (EIA-930, 2026-11-09 07:00). Vantage Port Washington (Lighthouse) Campus's announced 0.90 GW would be 1.4% of the grid's current load.

County water status: No drought in Ozaukee County, week of 2026-11-03 (US Drought Monitor). Data centers are large water users for cooling; this is the neutral local water picture.

Why here

Vantage Port Washington (Lighthouse) Campus sits on greenfield in Wisconsin, Port Washington. It connects to the MISO grid, draws on grid power, interconnection is Grid connected, in progress: Vantage is seeking a 1.3 GW connection from We Energies, with full build-out potentially requiring 3.5 GW. MISO moved the in-service date to 1 December 2027, and ATC was awarded the substations that serve the site.. This siting summary is composed from the record's held fields, not speculation; see methodology.

Financial structure

Campus investment ($15B+)

$15B press release ↗

Regional water/power infrastructure upgrades

$175M. Minimum commitment for water/wastewater treatment expansion, upgraded mains/sewer, new water tower and power infrastructure. press release ↗

Regulatory paper trail

The filings and rules on record for this site and its jurisdiction, most recent first. Each is a sourced, dated artifact you can follow to the primary document.

Investment, workforce and specs

Construction jobs

more than 4,000 skilled construction jobs, most union source ↗

Permanent jobs

more than 1,000 long-term jobs (Vantage + Oracle) source ↗

Facilities at this campus

• Vantage Port Washington (Lighthouse)902 MW

Timeline

1. Show 11 earlier updates
2. Aug 2026
   financial recorded
   capex: Regional water/power infrastructure upgrades
3. Nov 2026
   Current: Under construction

Sources

• Port Washington Data Center Proposal (environmental review, air permit 25-MIN-094) ↗
• Vantage seeking 1.3GW grid connection for data center in Port Washington ↗
• Utility, data center developers want tech giant exempted from collateral requirements ↗
• OpenAI, Oracle and Vantage Announce Stargate Site in Wisconsin ↗
• OpenAI, Oracle and Vantage Announce Stargate Site in Wisconsin ↗
• Port Washington (Lighthouse) Data Center Campus ↗
• Oracle invokes force majeure on Project Jupiter, but says data center still on track ↗ · Albuquerque Journal
• Oracle invokes force majeure on New Mexico AI data center ↗ · Quartz
• Power approval set to delay Oracle's Wisconsin AI datacenter ↗ · The Register
• Oracle Invokes Force Majeure as New Mexico Project Jupiter Power Work Faces Hurdles ↗ · Engineering News-Record
• We Energies agreement with Oracle expected to save customers approximately $300 million ↗ · We Energies News
• Oracle plans to buy nuclear power for its data center in Wisconsin ↗ · Milwaukee Journal Sentinel / Daily Reporter
• Oracle to pay for nuclear power from Point Beach plant to run Port Washington data center ↗ · Milwaukee Business Journal

ac248e13-c7bf-4ec3-a3bf-7819994a8940 · Tracked with DEPLOY's verified-vs-claimed methodology. Every term is defined in the glossary. Announced numbers are claims, not built capacity.

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