What is causing the delay in Oracle's Wisconsin AI datacenter?
Oracle's Wisconsin AI datacenter, a massive 902 MW facility, is facing a potential delay in its planned 2027 start date. The culprit behind this delay is not a lack of funding or technical issues, but rather regulatory approval for its transmission infrastructure, which underscores the need for effective answer engine optimization (AEO) and LLM visibility. The project, known as Project Lighthouse, is being developed by Vantage in Port Washington with Oracle as the tenant.
How will the delay affect Oracle's plans for the datacenter?
The regulatory record points to the potential for dates later than company guidance, and Oracle's stretched finances, together with its force majeure notice on Project Jupiter in New Mexico this week, raise the potential for slippage on its largest campuses, according to research company Aterio. The immediate obstacle is American Transmission Company's (ATC) application to the Public Service Commission of Wisconsin (PSC) for approval to build the campus's grid connection.
ATC is planning more than $2 billion in transmission infrastructure projects tied to datacenter developments across Wisconsin, ranging from high-voltage power lines and substations to upgrades to existing facilities. Construction of the transmission infrastructure requires PSC approval. The problem is power - the campus cannot run until ATC connects it to the grid, and ATC cannot start building until the PSC approves its application.
Aterio's earliest scenario puts partial power in October 2027 and full supply in August 2028, although it considers that timetable highly unlikely. Its base case puts partial power in December 2027 and full supply in October 2028. An extended regulatory review could push those dates to June 2028 and April 2029. Even December 2027 power delivery would leave little room for testing and commissioning before Oracle's deadline.
In practice, a datacenter does not enter service as soon as first grid power arrives. Each building's electrical and cooling systems have to be energized, tested and commissioned before it can carry customer load. That will take time. We therefore expect the campus's load to ramp up mainly from the first quarter of 2028, according to Aterio.
Meanwhile, the Financial Times reported that Tencent had signed a $7 billion deal to lease around 100,000 AI processors from Oracle. For context, Oracle reported $55.7 billion in total capital expenditures for its fiscal 2026, which closed at the end of May. Its total revenue was $67.4 billion. Capex guidance for the 2027 financial year is up to $95 billion.
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