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TL;DR
SpaceX says it is planning two AI supercomputing campuses, with more than $74 billion in combined planned investment: over $24 billion near Brownsville, Texas, and roughly $50 billion in Cochise County, Arizona. Both projects face local decisions on Dec. 9, 2026; key details, including Texas facility capacity and the status of Arizona’s electricity arrangement, remain unresolved.
SpaceX said Nov. 12 it is advancing two AI supercomputing projects, one near its Starbase launch site in Texas and another in Cochise County, Arizona, describing their combined planned investment as more than $74 billion. Both projects still require local action, with hearings or decisions set for Dec. 9, and important details about power, water and approvals remain open.
The Texas proposal calls for more than $24 billion in computing infrastructure on an approximately 444-acre site near the Port of Brownsville. A Starbase City Commission notice describes a gas-fired power plant alongside the computing facility. SpaceX says the site will generate its own electricity rather than draw from the public grid, but the city notice does not state the plant’s generating capacity. SpaceX has also said the facility will help develop and test technologies for future space-based computing.
In Arizona, SpaceX describes a campus costing roughly $50 billion. A land-use application filed by Tombstone Resources L.L.C. covers about 747 acres near Cochise and proposes up to nine computing buildings, built in four phases. The application estimates about 6 gigawatts of grid power at full build-out and includes a 24-gigawatt-hour battery system. It describes power delivery through the Sulphur Springs Valley Electric Cooperative and Arizona Electric Power Cooperative to a utility-owned substation; it does not propose an on-site power plant.
SpaceX says the Arizona campus would use dry cooling and would not draw industrial groundwater for cooling. The application estimates water use at 7 to 10 acre-feet annually at full build-out, mostly for staff. SpaceX also says it has committed $220 million to water and wastewater infrastructure serving Brownsville and Cameron County, including $40 million it says has already been provided. That regional infrastructure pledge does not establish how much water the Texas computing facility itself would use.
What More Than $74 Billion Could Mean For SpaceX’s AI Campuses
SpaceX plans two large AI computing campuses in Texas and Arizona. Both still depend on local decisions and unresolved power, water, and approval details.
Two campuses, two power models
The proposals point to different demands on local electricity systems.
- Gas-fired power plant alongside the computing facility
- SpaceX says the site would generate its own electricity
- Plant capacity and facility water use remain unspecified
- Proposed grid connection, with about 6 gigawatts needed at full build-out
- Application includes a 24-gigawatt-hour battery system
- Utility and regulatory approvals for the power arrangement remain unclear
Arizona campus at full build-out
The county application describes a phased development near Cochise.
The application proposes up to nine computing buildings across about 747 acres.
SpaceX says the campus would not use industrial groundwater for cooling.
The application estimates 7 to 10 acre-feet annually, mostly for staff.
Potential local effects
Job figures and community benefits are estimates or company statements, not confirmed outcomes.
Jobs projected
SpaceX reports more than 3,000 construction jobs so far and expects over 500 permanent jobs.
Workforce estimate
Application materials project roughly 5,500 construction workers at peak and about 1,000 staff at full build-out.
Regional infrastructure pledge
SpaceX says it committed $220 million for Brownsville and Cameron County water and wastewater infrastructure, including $40 million already provided. This does not establish Texas campus water use.
What local officials will consider
The scheduled decisions could shape whether the proposals advance and under what conditions.
Two Campuses, Two Power Models
The proposals show the scale of SpaceX’s planned AI investment and the different ways the company says it would supply power. The Texas facility is described as having its own gas-fired generation, while the Arizona campus would rely on a large grid connection. Those choices have different implications for local electricity infrastructure, air emissions and utility planning, though the available documents do not resolve every impact.
The investment figures are plans, not completed spending or proof that either campus will be built as proposed. If approved and constructed, the facilities would add substantial computing capacity for AI systems and could bring construction and operating jobs. SpaceX says the Texas project has involved more than 3,000 construction jobs so far and expects over 500 permanent jobs. Arizona application materials project roughly 5,500 construction workers at peak and about 1,000 staff at full build-out. These are company or application estimates, not confirmed employment outcomes.
Local decisions matter because they could shape project conditions, including land use and tax treatment. In Arizona, the campus’s power plan also depends on utility arrangements and regulatory decisions. SpaceX’s promise of lower bills for local cooperative members is a stated benefit, not a confirmed outcome.
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From Orbital AI to Ground Campuses
SpaceX previously presented computing in orbit as a response to rising electricity needs for AI. In a Feb. 2 statement following its acquisition of xAI, the company argued that terrestrial electricity demand for AI could burden communities and the environment. The new proposals place two large computing projects on Earth, while SpaceX says the Texas site will also support research relevant to future space-based computing.
The announcement followed a period in which AI became a major part of SpaceX’s business. Reuters reported that the company’s AI segment generated more than half its revenue in the third quarter. That figure is a reported revenue share for that quarter; it does not establish how much the proposed campuses will cost to operate or how quickly they might generate returns.
The Arizona county application is filed under Tombstone Resources L.L.C., and the county documents described in the source material do not name SpaceX. The connection is supported by SpaceX’s project page and a Tombstone statement saying SpaceX would host a community town hall. In Texas, the City of Starbase notice identifies the site and its estimated initial investment. These records provide different levels of detail, so company-wide investment claims should be distinguished from project filings and local notices.
““Together, they represent more than $74 billion in planned American investment.””
— SpaceX
Capacity, Water and Approval Questions
Several material details remain unsettled. For Texas, the published city notice does not specify the computing facility’s capacity, the power plant’s capacity or the facility’s own water use. SpaceX has not provided a figure for the size of the tax abatement under consideration. A local outlet, The 956 Report, said an air-registration filing described temporary natural-gas turbines totaling about 748 megawatts, later to be replaced by eight turbines totaling about 708 megawatts. Those figures come from the outlet’s account of a regulatory filing, rather than the city notice.
In Arizona, the application sets out a proposed grid connection and a full-build power requirement, but it is not clear from the available material whether the utility and regulatory approvals needed for the electricity arrangement have been granted. The county documents do not name SpaceX, and the project’s final configuration, construction schedule and total cost are not settled. SpaceX’s stated expectation of lower bills for cooperative members also depends on the electricity arrangement and should not be treated as guaranteed.
Neither project has been presented here as having all required approvals. Planned investment, proposed job totals and estimated resource use are forecasts or commitments attributed to SpaceX or project documents, not verified results.
Dec. 9 Local Decisions
The next scheduled local milestones are both on Dec. 9, 2026. The Cochise County Planning and Zoning Commission is due to hold a hearing on the Arizona application. In Starbase, the City Commission is scheduled to consider a property tax abatement connected to the Texas project.
The outcomes could clarify whether either proposal advances and what conditions local authorities may attach. Further information would also be needed on the Texas site’s computing capacity, power generation, water demand and tax terms, as well as the status of Arizona’s utility and regulatory arrangements. Until those details and decisions are available, the more-than-$74-billion figure describes SpaceX’s planned investment, not an approved or completed build-out.
Key Questions
What are the two SpaceX projects?
SpaceX says it is planning an AI computing facility near Starbase and the Port of Brownsville in Texas, plus a larger proposed campus in Cochise County, Arizona.
How much investment has SpaceX announced?
The company describes the combined planned investment as more than $74 billion: over $24 billion for Texas and roughly $50 billion for Arizona. These are planned figures, not confirmed completed spending.
How would the campuses get electricity?
SpaceX says the Texas facility would generate its own electricity using a gas-fired plant. The Arizona application proposes grid power delivered through local cooperatives, with about 6 gigawatts required at full build-out. Approval status for the Arizona power arrangement is unclear.
When are the next local decisions?
The Cochise County Planning and Zoning Commission has a hearing scheduled for Dec. 9, 2026. The Starbase City Commission is scheduled that day to consider a property tax abatement for the Texas project.
What details are still unknown?
Available material does not establish the Texas facility’s computing capacity or water use, the size of its proposed tax break, or whether Arizona’s electricity arrangements have received the necessary approvals. Final costs, schedules and project configurations also remain subject to review.
Source: ThorstenMeyerAI.com
