Power · Oct 18, 2026, 16:55

Oracle's 1.3 GW Wisconsin AI campus set to miss 2027 target, Aterio says

Oracle's huge planned AI data center in Port Washington, Wisconsin, cannot run until state regulators approve its power line connection. Research firm Aterio expects real use to start only in 2028.

Aerial view of a lakeside data center campus with a substation and transmission towers — Illustration (AI-generated)
A lakeside data center campus and its substation.

Key takeaways

Oracle's planned 1.3 GW AI campus in Wisconsin is likely to miss its target of serving customers in late 2027.
The reason: the power line connection still needs approval from state regulators.
Aterio's main forecast is some power by December 2027 and full power by October 2028.
Even with power, testing each building takes time, so real use should ramp up from early 2028.
Watch the regulator's timetable for reviewing the refiled application.

What is happening

Oracle's planned AI data center campus in Port Washington, Wisconsin, is likely to miss its target of serving customers in the second half of 2027. Its connection to the power grid has not been approved yet. Research firm Aterio made the forecast, as reported by The Register.

The campus is called Project Lighthouse. Vantage is building it, and Oracle will be the tenant. It is designed for 902 MW of computing load, the power drawn by the servers. Its total electricity demand is 1.3 GW. One megawatt (MW) is a million watts, and a gigawatt (GW) is a thousand megawatts.