‘A meaningful risk’: Oracle’s massive 1.3 GW Wisconsin AI campus faces severe power delays as grid…

• Oracle's Wisconsin campus may have finished buildings long before electricity arrived
• Regulators withdrew their completeness finding after ATC filed 564 additional documents
• Ten months of review ended without a decision and restarted from zero

Oracle’s massive 1.3 GW AI data center campus in Wisconsin, dubbed Project Lighthouse, faces severe power delays after regulators restarted the review needed to connect it to the grid.

The campus in Port Washington is being developed by Vantage for Oracle, with four data centers planned across the site.

Construction is advancing, but the campus cannot begin serving customers at scale until the required transmission infrastructure receives regulatory approval and gets built.

A review clock reset to zero

In September 2025, American Transmission Company (ATC) asked the Public Service Commission of Wisconsin (PSC) to approve the new high-voltage line serving the campus.

By December 2025, the PSC found the application complete and began its formal review,...

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