SpaceX Commits $74 Billion to Two AI Supercomputing Campuses

SpaceX plans to spend more than $74 billion on two AI supercomputing campuses — up to $24 billion at Starbase, Texas, and roughly $50 billion in Cochise County, Arizona — the company announced on November 12, 2026. The Arizona portion still needs county approval, with a public hearing scheduled for December 2026.

The scale is not speculative for SpaceX. Reuters reported that the company's AI segment generated more than half of SpaceX's third-quarter revenue, giving the buildout a business base well beyond rockets and Starlink satellite internet. In plain terms: the AI side already pays the bills, and these campuses double down on it.

What does each campus actually do?

The Starbase facility would train frontier AI systems for medical research, emergency response, advanced manufacturing and national security, while supporting development and testing of future space-based computing.

Arizona is the bigger check and the bigger footprint. The Cochise County plan calls for nine single-story compute buildings of roughly 493,000 square feet each, plus electrical buildings, an operations and security building, and outdoor yards for dry coolers, transformers and battery storage. The site is designed for up to six gigawatts of power and as much as 24 gigawatt-hours of battery energy storage.

The two sites take opposite approaches to electricity. Starbase would generate its own power rather than draw from the public grid, with emissions controls and monitoring intended to meet federal and state air-quality requirements. The Arizona campus would buy grid power through Sulphur Springs Valley Electric Cooperative (SSVEC) and Arizona Electric Power Cooperative, with no on-site power plant. Each compute building would carry 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.

How much water does an AI campus really use?

Very little, if SpaceX's numbers hold. Cooling is sealed and closed-loop: liquid loops 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 and no industrial water consumption. Construction and dust-control water would come from non-potable sources or be trucked in.

The takeaway: SpaceX is pitching Arizona on a facility that barely touches the local water table, a direct answer to the state's most common objection to data-center projects.

What's in it for the locals?

The jobs and tax numbers anchor SpaceX's case:

• Approximately 5,500 construction jobs at peak and 1,000 permanent jobs in Arizona
• A potential one-time county sales-tax benefit of $250 million in the first year
• $34 million to $103 million in new annual property-tax revenue
• Projected electricity-bill reductions of 10% to 40% for SSVEC residential members over the life of the project

The plan also lists annual payments of up to $260 million for SSVEC and up to $200 million for AEPCO at full buildout, with their boards deciding how to allocate the money. The detailed contributions remain subject to final negotiations with both cooperatives.

At Starbase, SpaceX says the project has already generated more than 3,000 construction jobs and expects more than 500 permanent positions at the operational facility. The company 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 roughly 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 keep ownership of the water facilities. SpaceX says 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 — land used for unauthorized dumping dating to the 1960s. SpaceX is now 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 that the structure would produce more predictable local revenue as computing equipment depreciates.

What could still stop it?

Both projects face local decisions. Reuters reported that a petition with 2,400 signatures asks officials to deny the Arizona permit, and the Cochise County public hearing is set for December 2026. In Texas, the Starbase City Commission is due to consider a property-tax abatement on December 9, 2026.

The $74 billion is a plan, not a check. County permitting, cooperative negotiations and Starbase's tax agreement will decide how the proposed computing capacity — and the local benefits attached to it — move from announcement to concrete.