SpaceX and Tesla Plan $16.8 Billion Terafab Semiconductor Megafactory in Texas

SpaceX has publicly named its next major Texas project as “Terafab” — a planned semiconductor fabrication facility that the company says will manufacture, package and test advanced chips under one roof. The announcement came via a post on X, in which SpaceX wrote that “the foundations for an exciting future are being built in Texas” and described Terafab as the project that is “next up.”

According to Reuters, reporting on 6 August 2026, SpaceX and Tesla plan to commit an initial $16.8 billion (around £13.2 billion) to the facility, which is to be built in Grimes County, Texas. The figure represents a significant revision from earlier estimates: filings reported by Reuters, Bloomberg and CNBC in May 2026 had placed the initial project value at $55 billion (around £43 billion), with total buildout potentially reaching $119 billion (around £93 billion). Reuters noted that future phases could still push total spending higher.

The scale of the physical plant is striking. Reported buildout estimates place the full facility at up to 100 million square feet — about 10 million square metres — which would make it one of the largest manufacturing structures ever proposed.

What SpaceX Says Terafab Is For

SpaceX has framed Terafab as a vertically integrated chip facility designed to meet expected internal demand across Tesla vehicles, humanoid robots, SpaceX spacecraft and space-based computing systems. The goal, according to Elon Musk, is to produce more than one terawatt of compute capacity per year. That figure — one terawatt — refers not to electrical power but to the aggregate processing capacity of chips manufactured at the site annually.

The concept was first reported publicly in March 2026, when Musk outlined plans for advanced chip factories in Texas to support Tesla, SpaceX and related AI workloads. Some reports have also linked the project to Intel and xAI, though the precise nature of those relationships has not been confirmed by the companies.

Texas Government Backs the Project

Texas Governor Greg Abbott confirmed the state’s involvement, announcing that a $30 million Texas Enterprise Fund grant has been extended to SpaceX as part of the deal. Abbott’s office cited the creation of 3,000 new jobs as the headline benefit for Grimes County, a largely rural area north-west of Houston.

The state’s support appears to draw on two economic development programmes: the Texas Enterprise Fund and the Jobs and Energy Accelerator (JETI) scheme. Abbott has presented the investment as a major win for the region.

It’s worth being precise about what’s been confirmed, though. As of the reporting available, Terafab remains at announcement stage. Whether ground has been broken or construction is actively under way could not be independently verified from the sources supplied.

The Numbers Have Shifted

The gap between the earlier $55 billion figure and the $16.8 billion first-phase figure has drawn attention from analysts and reporters covering the story.

Reuters was careful to note that the $16.8 billion covers only the initial phase, and that subsequent phases could raise total spending substantially. But the contrast with the $119 billion total buildout figure cited just months earlier is considerable, and questions remain about the timeline and phasing of the broader project.

SpaceX has not publicly explained the revision in detail. Neither Tesla nor Intel has issued statements specifically addressing the Terafab investment figures.

Where Terafab Sits in the Chip Industry

The United States has been pushing hard to expand domestic semiconductor manufacturing, with the CHIPS and Science Act of 2022 providing federal subsidies to attract fabrication investment. Terafab, if it proceeds at the scale described, would represent one of the largest privately funded chip manufacturing commitments in American history.

But Terafab is not a traditional foundry. SpaceX’s stated aim is vertical integration — designing, making and testing chips for its own ecosystem rather than selling fabrication services to third parties. That puts it in a different category from TSMC’s Arizona plants or Intel’s Ohio expansion, both of which are aimed at external customers.

Elon Musk’s companies have increasingly moved towards building their own silicon. Tesla’s Dojo supercomputer training chip and SpaceX’s internal compute work are both examples of that direction. Terafab, according to the companies’ own framing, is the infrastructure intended to support that strategy at scale.

Unanswered Questions

Several things remain unclear. The involvement of Intel and xAI has been reported but not formally confirmed. The timeline for construction and the first phase of production has not been published. And the revised $16.8 billion figure, set against earlier estimates nearly three times higher, has yet to be fully explained by SpaceX or Tesla.

Grimes County’s local infrastructure — roads, utilities, housing — will face pressure if a facility of this size moves into construction. Public reaction from the local community was not included in the reporting available at time of writing.

What This Means for Kent Residents

There is no direct impact on Kent from the Terafab announcement. The broader story is relevant to UK consumers and businesses, however, because any large-scale shift in semiconductor supply chains — especially one tied to Tesla vehicles and AI computing hardware — can affect the availability and pricing of technology products sold in Britain. Kent residents buying electric vehicles or consumer electronics may, over time, feel indirect effects if Terafab delivers on its stated production ambitions.