SpaceX Plans $50 Billion AI Supercomputer Campus in Arizona

By Amara Osei

SpaceX plans to invest up to $50 billion in a 747-acre AI supercomputing campus near Willcox, Arizona, according to investment plans disclosed on the 12th.

What will SpaceX build at the Cochise campus?

SpaceX calls the project the Cochise Supercomputer Campus. It would sit on roughly 747 acres, or about 3 square kilometers, in southeastern Cochise County. The company filed for a county special-use permit on Oct. 30 and could start construction as early as March 2027 if officials approve the application.

• Buildings: Up to nine supercomputing buildings, each covering about 45,800 square meters.
• Combined area: About 410,000 square meters across all nine buildings, excluding support facilities, equivalent to roughly 57 soccer fields.
• Approval process: A public hearing before the Cochise County Planning and Zoning Commission in December is the first gate.
• Employment: SpaceX says the project would create 5,500 construction jobs and 1,000 permanent positions.

The computing infrastructure would train what SpaceX calls “superintelligence models” and provide inference for medical research, disaster response, manufacturing and national security. SpaceX also intends to test space-based computing technology at the campus.

The campus design is defined; construction still needs county approval.

How much power would the campus draw?

At full build-out, the campus would draw up to 6 gigawatts in four phases of about 1.5 gigawatts each. That equals 33 times the capacity of Arizona’s largest existing data center, which has 180 megawatts.

The project would rank third among proposed US data-center projects by this power figure:

• Stratos, Utah: 9 gigawatts.
• Project Matador, Texas: 11 gigawatts.
• Cochise campus, Arizona: 6 gigawatts.

Securing electricity has become a major constraint for big tech companies expanding AI data centers. More operators are installing gas turbines on site, drawing environmental criticism and tighter regulatory hurdles. SpaceX has been drawn into an air-pollution lawsuit over gas turbines installed at its Colossus data center in Memphis.

The power requirement makes grid access and transmission work essential to the build-out.

Where would the electricity come from?

Unlike campuses that rely on continuous on-site generation, the Cochise plan would take grid electricity through a local electric cooperative. Natural-gas generators would provide emergency and backup power for critical equipment, not continuous operation.

• Backup generation: 90 megawatts in total, with about 10 megawatts per building.
• Grid upgrades: SpaceX would cover about $3.6 billion to expand transmission and substation facilities.
• Storage: A battery energy storage system with 24 gigawatt-hours of capacity would take the central role in the power plan.
• Cooling: Dry-air cooling, which SpaceX says would require “no industrial water.”

Grid supply and battery storage, not gas generation, would carry the campus’s main load.

Why does this matter to Tesla and SpaceX?

SpaceX absorbed xAI in February this year and has identified AI infrastructure as a reason to expand. Its disclosure on the 12th put planned investment across two sites above $74 billion: more than $24 billion at Starbase in Texas and about $50 billion in Cochise County.

Musk has repeatedly argued that the bottleneck in AI development will shift from chips to transformers and power supply. His proposed response combines solar generation with Tesla’s industrial battery-storage product, the Megapack. SpaceX spent $329 million on Megapack purchases in the first half of this year alone.

Filling the Arizona campus with Megapacks would place an unusually large order on Tesla’s energy business, even if construction proceeds in phases. The broader plan would run superintelligent AI on large-scale energy storage and direct the resulting capabilities toward space exploration and scientific research.

The plan ties Tesla batteries to SpaceX’s AI computing and space work.

What could delay or stop the project?

The 747-acre site is zoned for rural use and requires a special-use permit. Residents have submitted an opposition petition with 2,400 signatures. Nature adds another constraint: Willcox Playa, near the campus, is a major stopover for the federally protected sandhill crane.

SpaceX is presenting dry-air cooling, local hiring and the scale of the investment as its case to the community. The December hearing remains the first test of a plan targeting a March 2027 construction start.

The proposal still faces county review and organized local opposition.

For now, the 6-gigawatt, nine-building campus remains a proposal awaiting approval.