Oracle's 1.3 GW Wisconsin AI campus faces power delays as grid review restarts

Wisconsin regulators withdrew their completeness finding for the transmission line serving Oracle's Project Lighthouse campus and closed the case without a ruling on September 10, 2026. ATC refiled on September 18, restarting the statutory clock: partial service could slip to June 2028 and full 1.3 GW to April 2029.

• ATC filed 564 additional documents, changing routes and cost estimates
• PSC closed the case on September 10, 2026 without a ruling on merits
• Vantage sought about 310 MW in 2027 with a 438 MW peak
• Full 1.3 GW may only be available by April 2029