$15B Vantage Lighthouse Stargate Data Center in Port Washington Needs 10 Low Voltage Systems

Wisconsin just landed one of the largest construction projects in its history, and it runs on low voltage. Vantage Data Centers’ Lighthouse campus — a $15 billion Oracle-OpenAI Stargate AI data center in Port Washington — is under construction and, according to Signal’s data, will require ten distinct low voltage systems with an estimated $600 million in low voltage and structured infrastructure work.

Project Overview

Project data shows Lighthouse is a hyperscale, AI-optimized data center campus rising on 672 acres near Interstate 43, roughly 27 miles north of Milwaukee. Developer Vantage Data Centers broke ground in December 2025 on what will become four single-story data centers totaling 2.5 million square feet and 902 MW of critical IT capacity, built to support the Stargate compute buildout for Oracle and OpenAI.

• Project value: $15 billion — one of the largest capital projects in Wisconsin history
• Location: Lighthouse Campus, Port Washington, WI (Ozaukee County), near I-43
• Scale: 672 acres; four single-story data centers; 2.5M sq ft; 902 MW critical IT load
• Phasing: ~$8 billion first phase now underway; full buildout targeted for 2028
• Workforce: 4,000+ construction jobs (majority union), scaling to ~5,000 in 2027; 1,000+ permanent roles
• Cooling: Closed-loop, sustainable-by-design cooling paired with zero-emission energy capacity

The Signal record carries an LV opportunity score of 10 out of 10 — the ceiling — reflecting the density of mission-critical systems a hyperscale AI campus demands.

Key Players

This is a Tier 1 project with a public construction roster. Low voltage contractors should note who is holding the prime relationships on the first phase:

Role	Company	Notes
Owner / Developer	Vantage Data Centers	Denver-based hyperscale developer and operator
Tenants	Oracle & OpenAI	Stargate AI compute end-users
General Contractors	Whiting-Turner, The Weitz Company, Turner / McCarthy JV, Michels	First-phase construction team
Utility	We Energies	Power interconnection partner
Jurisdiction	City of Port Washington, Wisconsin DNR	Local approvals and environmental review

For LV specialists, the structured cabling, fiber, and physical-security scopes will flow through the general contractors and their electrical primes. With multiple national GCs on a phased buildout, there will be repeated bid windows across the four buildings — a rare multi-year pipeline in a single market.

Low Voltage Systems Breakdown

A hyperscale AI data center is one of the most low-voltage-intensive structures built today. Signal identifies ten systems in scope on Lighthouse:

System	Scope	Complexity
Fiber Backbone	Campus and inter-building single-mode fiber; spine-leaf interconnect	Very High
Structured Cabling	High-density copper and fiber to compute, storage, and network rows	Very High
Outside Plant (OSP)	Duct bank, conduit, and campus fiber between four buildings and the meet-me room	High
Networking	Passive infrastructure for AI fabric and management networks	Very High
Access Control	Multi-layer perimeter, mantrap, and cage-level credentialing	High
CCTV / Video Surveillance	Full-coverage IP video, analytics, and retention	High
Fire Alarm & Detection	VESDA aspirating detection, clean-agent interface, mass notification	Very High
BMS / Building Controls	Closed-loop cooling, power, and environmental monitoring integration	Very High
DAS	In-building cellular and public-safety radio coverage	Medium
Grounding & Bonding	Signal reference grid, lightning protection, equipment bonding	High

Estimated Low Voltage Value

Signal estimates the low voltage and structured infrastructure opportunity at approximately $600 million — roughly 4% of the $15 billion campus value, a benchmark consistent with hyperscale data center construction where mission-critical cabling, physical security, and controls carry an outsized share of the technology budget.

That figure is an estimate across the full four-building campus, not a single award. It will be packaged, bid, and delivered in phases over the multi-year buildout — beginning with the ~$8 billion first phase already underway. For contractors, the takeaway is scale: even a single-system package on one Lighthouse building can exceed the total value of a typical commercial project.

Skills & Certifications

Winning work on a hyperscale AI campus requires credentials well beyond standard commercial LV. Expect owners and primes to require:

• BICSI RCDD and DCDC (Data Center Design Consultant) — the baseline for mission-critical cabling design
• BICSI INSTC / INSTF and FOA CFOT — certified fiber installation and termination at scale
• NICET Fire Alarm Level II+ with VESDA / aspirating detection and clean-agent experience
• Manufacturer certifications for access control and IP video (Genetec, Lenel, Software House, Axis)
• IEEE / BICSI grounding and bonding competency for signal reference grids and lightning protection
• OT / BMS integration and IEC 62443 awareness for controls network cybersecurity
• Union affiliation — the majority of the 4,000+ construction jobs are union roles

Market Signal

Lighthouse is Wisconsin’s entry into the AI infrastructure boom — and one of a national cluster Signal is now tracking, from the Oracle-OpenAI Stargate campus in Michigan to Meta’s gigawatt sites in Indiana and Louisiana and DataBank south of Dallas. Every one carries a perfect 10 LV opportunity score and the same ten-system profile.

For low voltage contractors, this is a structural shift. AI infrastructure is concentrating enormous, cabling-dense, security-heavy scopes into a handful of megasites — and the firms that build data center credentials now will be positioned for a decade of work. Port Washington is a fresh market with a $600M LV opportunity that did not exist a year ago.

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