SpaceX has committed at least $55 billion to building an AI chip fabrication plant in Grimes County, Texas, with total spending potentially reaching $119 billion if later phases of the project, known as TerraFab, are built out. The figures appear in a public hearing notice tied to a request for local tax breaks, giving an unusually concrete look at one of the largest privately funded semiconductor projects ever attempted.
The disclosure adds hard numbers to an ambition Elon Musk floated in March, when he said his companies would target 200 gigawatts of compute on Earth and up to one terawatt of compute in space. "200 gigawatts of quote-unquote Earth compute and up to one terawatt of space compute," Jaeden Schafer noted on the AI Chat Daily podcast, adding, "It's wild that we have to differentiate the two there."
TerraFab would give SpaceX in-house silicon to feed those compute targets at a moment when Nvidia GPUs and TSMC fab capacity are the binding constraint on every frontier AI build-out. A vertically integrated fab in Texas, if it ships on the timelines implied by the Grimes County filing, would put Musk's orbit alongside the handful of operators — Intel, TSMC, Samsung — capable of producing leading-edge AI chips at scale.
Key facts
- 01SpaceX has committed at least $55 billion to a Texas AI chip fabrication plant called TerraFab, with total spend potentially reaching $119 billion if later phases are built.
- 02The figures come from a public hearing notice filed in Grimes County, Texas, tied to a request for tax breaks on the project.
- 03The fab supports Elon Musk's March target of 200 gigawatts of 'Earth compute' and up to one terawatt of 'space compute.'
- 04SpaceX has leased its first Memphis Colossus data center to Anthropic while running a 2.0 build for xAI's own compute needs.
The financing question is what makes the commitment striking. SpaceX is private and cash-generative, leaning heavily on Starlink subscription revenue, but $55 billion to $119 billion sits on top of Starship development costs and a separate compute build-out for xAI. "$55 billion up to $119 billion in spend on this TerraFab is absolutely massive," Schafer said. "And that's on top of what they're already spending on their Starship development."
“200 gigawatts of quote-unquote Earth compute and up to one terawatt of space compute. It's wild that we have to differentiate the two there.”— Jaeden Schafer
Musk's group has begun monetising earlier infrastructure to help shoulder the load. Schafer pointed to the Memphis Colossus cluster originally built for xAI, which has now been leased to a rival lab. Their first Colossus that they built for XAI, they actually just leased that out to Anthropic, he said, noting that a Colossus 2.0 is in service for xAI's own workloads. Renting compute to Anthropic effectively turns a sunk capital cost into recurring revenue while the next generation comes online.
The Grimes County tax-break request is the near-term hurdle. Texas has been aggressive in courting semiconductor and data-centre investment, but abatement packages of this size invite scrutiny over water, power and grid impact, particularly when paired with the gigawatt-scale compute footprint Musk has described. The public hearing notice is the first formal step in that local approval process.
For the wider AI industry, TerraFab signals that the compute arms race is moving from leasing GPUs to owning the fab. If Musk follows through on even the lower end of the range, SpaceX joins OpenAI's reported chip ambitions and Amazon, Google and Meta's custom-silicon programmes in trying to break the dependency on a single foreign foundry. The difference is the scale of the cheque and the fact that it is being written by a privately held rocket company rather than a hyperscaler.
Working on something we should cover, or seeing a story we missed? Send leads, documents, or feedback to hello@aichatdaily.com. For sensitive tips, see our secure tips page for Signal and PGP options.
Spotted an error? Email hello@aichatdaily.com with the URL and the issue, or read our full corrections policy.
