Grid approval delay threatens Oracle's 2027 timeline for Wisconsin AI campus

Oracle's plan to switch on a major AI datacenter campus in Wisconsin during 2027 is running into a problem that capital alone cannot fix: electricity. According to The Register, the transmission infrastructure needed to power the facility is still awaiting regulatory approval, putting Oracle's target of delivering capacity to customers in the second half of 2027 at risk.

Research firm Aterio warns that Project Lighthouse, a campus being developed by Vantage in Port Washington, Wisconsin, with Oracle as the tenant, faces what it describes as a real chance of missing that deadline. The site is rated at 902 MW of computing load and 1.3 GW of total electricity demand, and The Register has previously reported that Oracle may face more than $100 million a year in financing costs to guarantee the power commitments behind it. The Register says Oracle was offered the opportunity to comment on the analysis.

Where it is stuck

The immediate obstacle sits with American Transmission Company (ATC), which has applied to the Public Service Commission of Wisconsin (PSC) for permission to build the campus's grid connection. ATC has more than $2 billion of transmission work planned across Wisconsin tied to datacenter development, spanning high-voltage lines, substations and upgrades to existing facilities, and construction cannot begin until the PSC signs off.

Aterio's summary is blunt: the campus cannot operate until ATC connects it to the grid, and ATC cannot start building until the regulator approves the application.

The process has also had a false start. The PSC withdrew an earlier finding that ATC's application was complete and closed the original case, prompting ATC to refile in September and restart the approval clock.

What the timelines look like

Aterio sketches three scenarios. Its most optimistic, and in its own assessment highly unlikely, outcome delivers partial power in October 2027 and full supply in August 2028. The base case puts partial power in December 2027 and full supply in October 2028, while an extended regulatory review could push those dates to June 2028 and April 2029 respectively.

Even the base case is problematic for Oracle's schedule. As Aterio points out, a datacenter does not enter service the moment grid power arrives: each building's electrical and cooling systems must be energised, tested and commissioned before it can carry customer load. The firm expects the campus's load to ramp up mainly from the first quarter of 2028.

Pressure on Oracle's other megacampuses

Wisconsin is not the only sign of strain. Bloomberg reported that Oracle sent a force majeure notice to a Blue Owl Capital subsidiary developing Project Jupiter in New Mexico, seeking to defer payments if the campus fails to come online as planned rather than walk away from the project. Oracle maintains that that development remains on schedule.

Aterio ties the threads together, saying the regulatory record points to dates later than company guidance and that Oracle's stretched finances, combined with the Project Jupiter notice, raise the potential for slippage across its largest campuses.

There is demand on the other side of the ledger, too. The Financial Times reported that Tencent signed a $7 billion deal to lease roughly 100,000 AI processors from Oracle. For scale, Oracle reported $55.7 billion in total capital expenditures for its fiscal 2026, which closed at the end of May, against $67.4 billion in revenue, and has guided to as much as $95 billion in capex for fiscal 2027.

Why it matters

The Wisconsin bottleneck is a concrete example of the constraint now shaping AI infrastructure buildout: the pacing item is increasingly not chips, land or funding, but grid interconnection and the state-level regulatory processes that govern it. A single commission's review in one state can move a multi-gigawatt campus's delivery date by a year or more, and Oracle is exposed to that risk while spending at unprecedented levels and having already booked multi-billion-dollar customer commitments such as the Tencent lease. For cloud customers counting on specific capacity windows, transmission approvals may now matter as much as vendor roadmaps.