SpaceX Commits $74 Billion to AI Supercomputing Campuses in Texas and Arizona

SpaceX announced on November 12, 2026 plans for two AI supercomputing campuses representing more than $74 billion in planned investment: up to $24 billion at Starbase, Texas, and roughly $50 billion in Cochise County, Arizona, where county approval is still required. The scale of the commitment places SpaceX among the largest private AI infrastructure builders in the United States, and Reuters reported that SpaceX's AI segment already generated more than half of the company's third-quarter revenue, giving the buildout a substantial business base beyond rockets and Starlink satellite internet.

The Starbase facility is intended to train frontier AI systems (the most capable generation of machine-learning models) for medical research, emergency response, advanced manufacturing and national security. The Texas site would also support development and testing of future space-based computing, extending the company's computing ambitions beyond terrestrial data centers.

The stakes for local governments are considerable. Both projects still require decisions from county and municipal bodies, and opposition has already organized in Arizona, where a petition with 2,400 signatures asks officials to deny the permit.

What Does the Arizona Campus Look Like?

The Arizona campus plan calls for nine single-story compute buildings of about 493,000 square feet each, plus electrical buildings, an operations and security building, and outdoor yards for dry coolers, transformers and battery storage. The buildings are designed for up to six gigawatts of power, with as much as 24 gigawatt-hours of battery energy storage.

Unlike Starbase, the Arizona site would draw power from the grid through Sulphur Springs Valley Electric Cooperative (SSVEC) and Arizona Electric Power Cooperative, with no on-site power plant. Each compute building would have about 10 megawatts of standby natural-gas generation for critical loads, supplied by an existing pipeline and used only during utility outages and periodic testing. The battery system would provide ride-through during outages and voltage and stability support to the regional grid.

The numbers are large. Six gigawatts approaches the peak demand of a mid-sized state, and the battery storage figure of 24 gigawatt-hours would rank among the largest single-site storage installations in the country if built as planned.

How Much Water Will It Use?

Cooling is a central part of the resource plan, and SpaceX has designed the Arizona site to minimize water consumption. Sealed liquid loops would carry heat from the computers to fan-cooled dry coolers, eliminating cooling towers and evaporative spray. The loops are filled once, and their water can be reused for up to 10 years.

SpaceX estimates total water use at full buildout at up to 10 acre-feet annually across all site purposes, roughly the annual consumption of 20 to 30 Arizona homes. The plan lists no new wells or industrial water consumption. Construction and dust-control water would come from non-potable sources or be trucked in.

Water is a persistent flashpoint for data center development in the American Southwest, and the low consumption figure appears designed to preempt that criticism before the county hearing.

What Are the Local Economic Benefits?

SpaceX estimates approximately 5,500 construction jobs at peak and 1,000 permanent jobs for Cochise County. Its projections also include a potential one-time county sales-tax benefit of $250 million in the first year and $34 million to $103 million in new annual property-tax revenue, making the expanded tax base a central part of its case for the project.

The company also projects electricity-bill reductions of 10% to 40% for SSVEC residential members over the life of the project. At full buildout, its plan lists up to $260 million a year for SSVEC and up to $200 million for AEPCO, with the cooperatives' boards deciding how to allocate the money. The detailed annual contributions remain subject to final negotiations with both cooperatives.

What Happens at Starbase?

At Starbase, the facility would generate its own electricity rather than draw from the public grid. SpaceX says the project has already generated more than 3,000 construction jobs and expects the operational facility to support more than 500 permanent positions. Its power systems would include emissions controls and monitoring intended to meet federal and state air-quality requirements.

SpaceX has committed $220 million to Brownsville-area water and wastewater infrastructure, including $40 million already provided to the Brownsville Public Utilities Board. Projects identified by the Southmost Regional Water Authority are intended to add approximately 20 million gallons of water per day from sources independent of the Rio Grande: 8 million gallons through potable reuse and 12 million through expanded brackish-groundwater treatment.

Brownsville and its utilities board would retain ownership of the water facilities. SpaceX states it is not acquiring water rights, prepaying utility rates or receiving preferential access, and it would remain subject to standard rates and conservation restrictions.

As part of the water-infrastructure agreement, Brownsville disannexed approximately 444 acres near the Port of Brownsville to Starbase. The privately owned property was used for unauthorized dumping dating to the 1960s, and SpaceX is cleaning up scrap metal, appliances, construction debris and thousands of tires. The company is also discussing tax abatements paired with negotiated payments to Starbase and Cameron County, arguing the structure would produce more predictable local revenue as computing equipment depreciates.

What Decisions Remain?

Both projects still face local decisions that will determine whether the announced investment becomes operational capacity. A Cochise County public hearing on the Arizona permit is scheduled for December 2026, with the 2,400-signature petition already filed against approval. In Texas, the Starbase City Commission is due to consider a property-tax abatement on December 9, 2026.

The practical implication is that SpaceX's capital plan is only one part of the buildout. County permitting, cooperative negotiations and Starbase's tax agreement will shape how the proposed computing capacity and associated local benefits move from announcement to implementation.