SpaceX Confirms $74 Billion AI Supercomputer Campuses in Arizona and Texas
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- optimusk.blog
On November 12, 2026, SpaceX confirmed plans for more than $74 billion in AI supercomputing campuses: about $50 billion in Cochise County, Arizona, with capacity of up to 6 GW, and $24 billion at Starbase, Texas, with an on-site gas power plant. Public votes on both proposals are scheduled for December 9. The Arizona application was filed by Tombstone Resources LLC; a SpaceX representative said using the company’s name would “draw attention” from outside the county. SpaceX said the sites will train models for medicine, emergency response, manufacturing and national security, and test space-based computing.
The proposed campuses would expand SpaceX’s compute capacity as it develops its AI business, SpaceXSI, following its 2026 absorption of xAI. The article estimates that the $74 billion headline covers campuses and power, not the full cost of equipment: applying Nvidia CEO Jensen Huang’s stated estimate of $50–60 billion per gigawatt, including chips, to 6 GW implies at least $300 billion for Arizona alone. SpaceX ended Q3 2026 with 1.7 GW of nameplate compute, mostly near Memphis, and targets 2.5–3 GW by year-end.
SpaceX’s December 9 public votes are the next disclosed milestone for both campuses. The company also targets at least 10 GW of additional compute in 2027, while Texas’s proposed gas plant addresses grid-connection constraints. The article says SpaceX leases part of its Colossus capacity to Anthropic for about $1.25 billion per month through May 2029, and identifies Google as another customer. The full Arizona build’s timing and financing were not disclosed.
Original report
SpaceX's $74 Billion AI Supercomputer Plan: Arizona's 6 GW Campus, Starbase's Gas Plant and Who Pays
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